redis缓存服务器(Nginx+Tomcat+redis+MySQL实现session会话共享)

一、redis介绍

redis是一个key-value存储系统。和Memcached类似，它支持存储的value类型相对更多，包括string(字符串)、list(链表)、set(集合)、zset(sorted set --有序集合)和hash（哈希类型）。与memcached一样，为了保证效率，数据都是缓存在内存中。区别的是redis会周期性的把更新的数据写入磁盘或者把修改操作写入追加的记录文件，并且在此基础上实现master-slave(主从)同步。

Redis是一个高性能的key-value数据库。redis的出现，很大程度补偿了memcached这类key/value存储的不足，在部分场合可以对关系数据库起到很好的补充作用。它提供了Java，C/C++，C#，PHP，JavaScript，Perl，Object-C，Python，Ruby等客户端，使用很方便。

如果简单地比较Redis与Memcached的区别，基本上有以下3点：
1、Redis不仅仅支持简单的k/v类型的数据，同时还提供list，set，zset，hash等数据结构的存储。
2、Redis支持数据的备份，即master-slave模式的数据备份。
3、Redis支持数据的持久化，可以将内存中的数据保持在磁盘中，重启的时候可以再次加载进行使用。

在Redis中，并不是所有的数据都一直存储在内存中的。这是和Memcached相比一个最大的区别。Redis只会缓存所有的key的信息，如果Redis发现内存的使用量超过了某一个阀值，将触发swap的操作，Redis根据“swappability = age*log(size_in_memory)”计算出哪些key对应的value需要swap到磁盘。然后再将这些key对应的value持久化到磁盘中，同时在内存中清除。这种特性使得Redis可以保持超过其机器本身内存大小的数据。当然，机器本身的内存必须要能够保持所有的key，因为这些数据是不会进行swap操作的。

当从Redis中读取数据的时候，如果读取的key对应的value不在内存中，那么Redis就需要从swap文件中加载相应数据，然后再返回给请求方。

memcached和redis的比较

1、网络IO模型

Memcached是多线程，非阻塞IO复用的网络模型，分为监听主线程和worker子线程，监听线程监听网络连接，接受请求后，将连接描述字pipe 传递给worker线程，进行读写IO, 网络层使用libevent封装的事件库，多线程模型可以发挥多核作用。

Redis使用单线程的IO复用模型，自己封装了一个简单的AeEvent事件处理框架，主要实现了epoll、kqueue和select，对于单纯只有IO操作来说，单线程可以将速度优势发挥到最大，但是Redis也提供了一些简单的计算功能，比如排序、聚合等，对于这些操作，单线程模型实际会严重影响整体吞吐量，CPU计算过程中，整个IO调度都是被阻塞住的。

2、内存管理方面

Memcached使用预分配的内存池的方式，使用slab和大小不同的chunk来管理内存，value根据大小选择合适的chunk存储。Redis使用现场申请内存的方式来存储数据。

3、存储方式及其它方面

Memcached基本只支持简单的key-value存储，不支持持久化和复制等功能，Redis除key/value之外，还支持list,set,sortedset,hash等众多数据结构

 

二、如何保持session会话

目前，为了使web能适应大规模的访问，需要实现应用的集群部署。集群最有效的方案就是负载均衡，而实现负载均衡用户每一个请求都有可能被分配到不固定的服务器上，这样我们首先要解决session的统一来保证无论用户的请求被转发到哪个服务器上都能保证用户的正常使用，即需要实现session的共享机制。

在集群系统下实现session统一的有如下几种方案：

1、请求精确定位：sessionsticky，例如基于访问ip的hash策略，即当前用户的请求都集中定位到一台服务器中，这样单台服务器保存了用户的session登录信息，如果宕机，则等同于单点部署，会丢失，会话不复制。

2、session复制共享：sessionreplication，如tomcat自带session共享，主要是指集群环境下，多台应用服务器之间同步session，使session保持一致，对外透明。 如果其中一台服务器发生故障，根据负载均衡的原理，调度器会遍历寻找可用节点，分发请求，由于session已同步，故能保证用户的session信息不会丢失，会话复制,。

此方案的不足之处：

必须在同一种中间件之间完成(如:tomcat-tomcat之间).

session复制带来的性能损失会快速增加.特别是当session中保存了较大的对象,而且对象变化较快时, 性能下降更加显著，会消耗系统性能。这种特性使得web应用的水平扩展受到了限制。

Session内容通过广播同步给成员，会造成网络流量瓶颈，即便是内网瓶颈。在大并发下表现并不好

3、基于cache DB缓存的session共享

基于memcache/redis缓存的 session 共享

即使用cacheDB存取session信息，应用服务器接受新请求将session信息保存在cache DB中，当应用服务器发生故障时，调度器会遍历寻找可用节点，分发请求，当应用服务器发现session不在本机内存时，则去cache DB中查找，如果找到则复制到本机，这样实现session共享和高可用。

 

三、nginx+tomcat+redis实现负载均衡、session共享

1、实验环境

 

主机	操作系统	IP地址
Nginx	Centos7.2	192.168.31.141
Tomcat-1		192.168.31.83
Tomcat-2		192.168.31.250
Mysql		192.168.31.225
Redis		192.168.31.106

 

2、实验拓扑

 

在这个图中，nginx做为反向代理，实现静动分离，将客户动态请求根据权重随机分配给两台tomcat服务器，redis做为两台tomcat的共享session数据服务器，mysql做为两台tomcat的后端数据库。

3、nginx安装配置

使用Nginx作为Tomcat的负载平衡器，Tomcat的会话Session数据存储在Redis，能够实现零宕机的7x24效果。因为将会话存储在Redis中，因此Nginx就不必配置成stick粘贴某个Tomcat方式，这样才能真正实现后台多个Tomcat负载平衡。

安装nginx：

安装zlib-devel、pcre-devel等依赖包

[root@www ~] # yum -y install gccgcc-c++ make libtoolzlibzlib-develpcrepcre-developensslopenssl-devel

注：

结合proxy和upstream模块实现后端web负载均衡

结合nginx默认自带的ngx_http_proxy_module模块 和ngx_http_upstream_module模块实现后端服务器的健康检查

创建nginx程序用户

[root@www ~] # useradd -s /sbin/nologin www

编译安装nginx

[root@www ~]# tar zxf nginx-1.10.2.tar.gz

[root@www ~] # cd nginx-1.10.2/
[root@www nginx-1.10.2] # ./configure --prefix=/usr/local/nginx1.10 --user=www --group=www --with-http_stub_status_module --with-http_realip_module --with-http_ssl_module
--with-http_gzip_static_module  --with-pcre  --with-http_flv_module
[root@www nginx-1.10.2] # make&& make install

优化nginx程序的执行路径

[root@www nginx-1.10.2] # ln -s /usr/local/nginx1.10/sbin/nginx /usr/local/sbin/
[root@www nginx-1.10.2] # nginx -t
nginx: the configuration  file  /usr/local/nginx1 .10 /conf/nginx .conf syntax is ok
nginx: configuration  file  /usr/local/nginx1 .10 /conf/nginx .conf  test  is successful

编写nginx服务脚本：脚本内容如下：

[root@www ~] # cat /etc/init.d/nginx
#!/bin/bash
# nginx Startup script for the Nginx HTTP Server
# chkconfig: - 85 15
# pidfile: /usr/local/nginx1.10/logs/nginx.pid
# config: /usr/local/nginx1.10/conf/nginx.conf
nginxd= /usr/local/nginx1 .10 /sbin/nginx
nginx_config= /usr/local/nginx1 .10 /conf/nginx .conf
nginx_pid= /usr/local/nginx1 .10 /logs/nginx .pid
RETVAL=0
prog= "nginx"
# Source function library.
.  /etc/rc .d /init .d /functions
# Start nginx daemons functions.
start() {
if  [ -f $nginx_pid ] ;  then
echo  "nginx already running...."
exit  1
fi
echo  -n  "Starting $prog: "
   $nginxd -c ${nginx_config}
   RETVAL=$?
[ $RETVAL = 0 ] &&  touch  /var/lock/subsys/nginx
}
# Stop nginx daemons functions.
stop() {
echo  -n  "Stopping $prog: "
        $nginxd -s stop
        RETVAL=$?
[ $RETVAL = 0 ] && rm  -f  /var/lock/subsys/nginx
}
# reloadnginx service functions.
reload() {
echo  -n  "Reloading $prog: "
    $nginxd -s reload
}
# statusngnx service functions
status() {
if  [ -f $nginx_pid ] ;  then
echo   "$prog is running"
else
echo   "$prog is stop"
fi
}
case  "$1"  in
start)
start
        ;;
stop)
stop
        ;;
reload)
reload
        ;;
restart)
stop
start
        ;;
status)
status
        ;;
*)
echo  "Usage: $prog {start|stop|restart|reload|status}"
exit  1
        ;;
esac
[root@www ~] # chmod +x /etc/init.d/nginx
[root@www ~] # chkconfig --add nginx
[root@www ~] # chkconfignginx on
[root@www ~] # systemctl daemon-reload

配置nginx反向代理：反向代理+负载均衡+健康探测，nginx.conf文件内容：

[root@www ~] # cat /usr/local/nginx1.10/conf/nginx.conf
user  wwwwww;
worker_processes  4;
worker_cpu_affinity 0001 0010 0100 1000;
error_log  logs /error .log;
#error_log  logs/error.log  notice;
#error_log  logs/error.log  info;
worker_rlimit_nofile 10240;
pid        logs /nginx .pid;
events {
useepoll;
worker_connections  4096;
}
http {
includemime.types;
default_type  application /octet-stream ;
log_format  main   '$remote_addr - $remote_user [$time_local] "$request" '
                      '$status $body_bytes_sent "$http_referer" '
                      '"$http_user_agent" "$http_x_forwarded_for"' ;
access_log  logs /access .log  main;
server_tokens off;
sendfile        on;
tcp_nopush     on;
    #keepalive_timeout  0;
keepalive_timeout  65;
    #Compression Settings
gzip  on;
gzip_comp_level 6;
gzip_http_version 1.1;
gzip_proxied any;
gzip_min_length 1k;
gzip_buffers 16 8k;
gzip_types text /plain  text /css  text /javascript  application /json  application /javascript  application /x-javascript  application /xml ;
gzip_vary on;
    #end gzip
    # http_proxy Settings
client_max_body_size   10m;
client_body_buffer_size   128k;
proxy_connect_timeout   75;
proxy_send_timeout   75;
proxy_read_timeout   75;
proxy_buffer_size   4k;
proxy_buffers   4 32k;
proxy_busy_buffers_size   64k;
proxy_temp_file_write_size  64k;
    #load balance Settings
upstreambackend_tomcat {
server 192.168.31.83:8080 weight=1 max_fails=2 fail_timeout=10s;
server 192.168.31.250:8080 weight=1 max_fails=2 fail_timeout=10s;
    }
    #virtual host Settings
server {
listen       80;
server_name  www.benet.com;
charset utf-8;
location / {
root html;
index  index.jsp index.html index.htm;
        }
location ~* \.(jsp| do )$ {
proxy_pass  http: //backend_tomcat ;
proxy_redirect off;
proxy_set_header Host $host;
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
proxy_next_upstream error timeout invalid_header http_500 http_502 http_503 http_504;
        }
location  /nginx_status  {
stub_status on;
access_log off;
allow 192.168.31.0 /24 ;
deny all;
        }
    }
}

重启nginx服务，使修改生效

[root@www ~] # service  nginx restart

配置防火墙规测

[root@www ~] # firewall-cmd --permanent --add-port=80/tcp
success
[root@www ~] # firewall-cmd --reload
success

4、安装部署tomcat应用程序服务器

在tomcat-1和tomcat-2节点上安装JDK

在安装tomcat之前必须先安装JDK，JDK的全称是java  development kit,是sun公司免费提供的java语言的软件开发工具包，其中包含java虚拟机（JVM），编写好的java源程序经过编译可形成java字节码，只要安装了JDK，就可以利用JVM解释这些字节码文件，从而保证了java的跨平台性。

安装JDK，配置java环境：

将jdk-7u65-linux-x64.gz解压

[root@tomcat-1 ~] # tar zxf jdk-7u65-linux-x64.gz

将解压的jdk1.7.0_65目录移致动到/usr/local/下并重命名为java

[root@tomcat-1 ~] # mv jdk1.7.0_65/ /usr/local/java

在/etc/profile文件中添加内容如下：

export  JAVA_HOME= /usr/local/java
export  PATH=$JAVA_HOME /bin :$PATH

通过source命令执行profile文件，使其生效。

[root@tomcat-1 ~] # source /etc/profile
[root@tomcat-1 ~] # echo $PATH
/usr/local/java/bin : /usr/local/sbin : /usr/local/bin : /usr/sbin : /usr/bin : /root/bin

按照相同方法在tomcat-2也安装JDK

分别在在tomcat-1和tomcat-2节点运行java  -version命令查看java版本是否和之前安装的一致。

[root@tomcat-1 ~] # java -version
java version  "1.7.0_65"
Java(TM) SE Runtime Environment (build 1.7.0_65-b17)
Java HotSpot(TM) 64-Bit Server VM (build 24.65-b04, mixed mode)

至此java环境已经配置完成

在tomcat-1和tomcat-2节点安装配置tomcat

解压apache-tomcat-7.0.54.tar.gz包

[root@tomcat-1 ~] # tar zxf apache-tomcat-7.0.54.tar.gz

将解压生成的文件夹移动到/usr/local/下，并改名为tomcat7

[root@tomcat-1 ~] # mv apache-tomcat-7.0.54 /usr/local/tomcat7

配置tomcat环境变量

/etc/profile文件内容如下：

export  JAVA_HOME= /usr/local/java
export  CATALINA_HOME= /usr/local/tomcat7
export  PATH=$JAVA_HOME /bin :$CATALINA_HOME /bin :$PATH

通过source命令执行profile文件，使其生效。

[root@tomcat-1 ~] # source /etc/profile
[root@tomcat-1 ~] # echo $PATH
/usr/local/java/bin : /usr/local/tomcat7/bin : /usr/local/java/bin : /usr/local/sbin : /usr/local/bin : /usr/sbin : /usr/bin : /root/bin

查看tomcat的版本信息

[root@tomcat-1 ~] # catalina.sh version
Using CATALINA_BASE:    /usr/local/tomcat7
Using CATALINA_HOME:    /usr/local/tomcat7
Using CATALINA_TMPDIR:  /usr/local/tomcat7/temp
Using JRE_HOME:         /usr/local/java
Using CLASSPATH:        /usr/local/tomcat7/bin/bootstrap .jar: /usr/local/tomcat7/bin/tomcat-juli .jar
Server version: Apache Tomcat /7 .0.54
Server built:   May 19 2014 10:26:15
Server number:  7.0.54.0
OS Name:        Linux
OS Version:     3.10.0-327.el7.x86_64
Architecture:   amd64
JVM Version:    1.7.0_65-b17
JVM Vendor:     Oracle Corporation
启动tomcat
[root@tomcat-1 ~] # /usr/local/tomcat7/bin/startup.sh
Using CATALINA_BASE:    /usr/local/tomcat7
Using CATALINA_HOME:    /usr/local/tomcat7
Using CATALINA_TMPDIR:  /usr/local/tomcat7/temp
Using JRE_HOME:         /usr/local/java
Using CLASSPATH:        /usr/local/tomcat7/bin/bootstrap .jar: /usr/local/tomcat7/bin/tomcat-juli .jar
Tomcat started.

Tomcat默认运行在8080端口，运行netstat命令查看8080端口监听的信息

[root@tomcat-1 ~] # netstat -anpt | grep java
tcp6       0      0 :::8009      :::*                    LISTEN      42330 /java
tcp6       0      0 :::8080      :::*                    LISTEN      42330 /java

防火墙规则配置：

[root@tomcat-1 ~] # firewall-cmd --permanent --add-port=8080/tcp
success
[root@tomcat-1 ~] # firewall-cmd --reload
success

按照相同方法在tomcat-2也安装

打开浏览器分别对tomcat-1和tomcat-2访问测试

如果想关闭tomcat则运行/usr/local/tomcat7/bin/shutdown.sh命令

好了，大家可以看到访成功。说明我们的tomcat安装完成，下面我们来修改配置文件

[root@tomcat-1 ~] # vim /usr/local/tomcat
7 /conf/server .xml

设置默认虚拟主机，并增加jvmRoute

"Catalina"  defaultHost= "localhost"  jvmRoute= "tomcat-1" >

修改默认虚拟主机，并将网站文件路径指向/web/webapp1，在host段增加context段

"localhost"   appBase= "webapps"
unpackWARs= "true"  autoDeploy= "true" >
"/web/webapp1"  path= ""  reloadable= "true" />
< /Host >

增加文档目录与测试文件

[root@tomcat-1 ~] # mkdir -p /web/webapp1
[root@tomcat-1 ~] # cd /web/webapp1/
[root@ tomcat-1 webapp1] # viindex.jsp

index.jsp内容如下：

<%@page language= "java"  import = "java.util.*"  pageEncoding= "UTF-8" %>

< head >
tomcat-1<</code> <code class="bash plain">/title</code> <code class="bash plain">></code> </div> <div class="line number5 index4 alt2"> <code class="bash plain"><</code> <code class="bash plain">/head</code> <code class="bash plain">></code> </div> <div class="line number6 index5 alt1"> <code class="bash plain"><body></code> </div> <div class="line number7 index6 alt2"> <code class="bash plain"><h1><font color=</code> <code class="bash string">"red"</code> <code class="bash plain">>Session serviced by tomcat<</code> <code class="bash plain">/font</code> <code class="bash plain">><</code> <code class="bash plain">/h1</code> <code class="bash plain">></code> </div> <div class="line number8 index7 alt1"> <code class="bash plain"><table aligh=</code> <code class="bash string">"center"</code>  <code class="bash plain">border=</code> <code class="bash string">"1"</code> <code class="bash plain">></code> </div> <div class="line number9 index8 alt2"> <code class="bash plain"><</code> <code class="bash functions">tr</code> <code class="bash plain">></code> </div> <div class="line number10 index9 alt1"> <code class="bash plain"><td>Session ID<</code> <code class="bash plain">/td</code> <code class="bash plain">></code> </div> <div class="line number11 index10 alt2"> <code class="bash plain"><td><%=session.getId() %><</code> <code class="bash plain">/td</code> <code class="bash plain">></code> </div> <div class="line number12 index11 alt1"> <code class="bash plain"><% session.setAttribute(</code> <code class="bash string">"abc"</code> <code class="bash plain">,</code> <code class="bash string">"abc"</code> <code class="bash plain">);%></code> </div> <div class="line number13 index12 alt2"> <code class="bash plain"><</code> <code class="bash plain">/tr</code> <code class="bash plain">></code> </div> <div class="line number14 index13 alt1"> <code class="bash plain"><</code> <code class="bash functions">tr</code> <code class="bash plain">></code> </div> <div class="line number15 index14 alt2"> <code class="bash plain"><td>Created on<</code> <code class="bash plain">/td</code> <code class="bash plain">></code> </div> <div class="line number16 index15 alt1"> <code class="bash plain"><td><%= session.getCreationTime() %><</code> <code class="bash plain">/td</code> <code class="bash plain">></code> </div> <div class="line number17 index16 alt2"> <code class="bash plain"><</code> <code class="bash plain">/tr</code> <code class="bash plain">></code> </div> <div class="line number18 index17 alt1"> <code class="bash plain"><</code> <code class="bash plain">/table</code> <code class="bash plain">></code> </div> <div class="line number19 index18 alt2"> <code class="bash plain"><</code> <code class="bash plain">/body</code> <code class="bash plain">></code> </div> <div class="line number20 index19 alt1"> <code class="bash plain"><html></code> </div> </div> </td> </tr> </tbody> </table> </div> </div> <p class="正文"><strong>停止tomcat运行，检查配置文件并启动tomcat</strong></p> <div> <div id="highlighter_63463" class="syntaxhighlighter bash"> <table border="0"> <tbody> <tr> <td class="gutter"> <div class="line number1 index0 alt2"> 1 </div> <div class="line number2 index1 alt1"> 2 </div> <div class="line number3 index2 alt2"> 3 </div> <div class="line number4 index3 alt1"> 4 </div> <div class="line number5 index4 alt2"> 5 </div> <div class="line number6 index5 alt1"> 6 </div> <div class="line number7 index6 alt2"> 7 </div> <div class="line number8 index7 alt1"> 8 </div> <div class="line number9 index8 alt2"> 9 </div> <div class="line number10 index9 alt1"> 10 </div> <div class="line number11 index10 alt2"> 11 </div> <div class="line number12 index11 alt1"> 12 </div> <div class="line number13 index12 alt2"> 13 </div> <div class="line number14 index13 alt1"> 14 </div> <div class="line number15 index14 alt2"> 15 </div> <div class="line number16 index15 alt1"> 16 </div> <div class="line number17 index16 alt2"> 17 </div> <div class="line number18 index17 alt1"> 18 </div> <div class="line number19 index18 alt2"> 19 </div> <div class="line number20 index19 alt1"> 20 </div> <div class="line number21 index20 alt2"> 21 </div> <div class="line number22 index21 alt1"> 22 </div> <div class="line number23 index22 alt2"> 23 </div> <div class="line number24 index23 alt1"> 24 </div> <div class="line number25 index24 alt2"> 25 </div> <div class="line number26 index25 alt1"> 26 </div> </td> <td class="code"> <div> <div class="line number1 index0 alt2"> <code class="bash plain">[root@tomcat-1 ~]</code> <code class="bash comments"># shutdown.sh</code> </div> <div class="line number2 index1 alt1"> <code class="bash plain">[root@tomcat-1 ~]</code> <code class="bash comments"># netstat -anpt | grep java</code> </div> <div class="line number3 index2 alt2"> <code class="bash plain">[root@tomcat-1 ~]</code> <code class="bash comments"># catalina.shconfigtest</code> </div> <div class="line number4 index3 alt1"> <code class="bash plain">Using CATALINA_BASE:   </code> <code class="bash plain">/usr/local/tomcat7</code> </div> <div class="line number5 index4 alt2"> <code class="bash plain">Using CATALINA_HOME:   </code> <code class="bash plain">/usr/local/tomcat7</code> </div> <div class="line number6 index5 alt1"> <code class="bash plain">Using CATALINA_TMPDIR: </code> <code class="bash plain">/usr/local/tomcat7/temp</code> </div> <div class="line number7 index6 alt2"> <code class="bash plain">Using JRE_HOME:        </code> <code class="bash plain">/usr/local/java</code> </div> <div class="line number8 index7 alt1"> <code class="bash plain">Using CLASSPATH:       </code> <code class="bash plain">/usr/local/tomcat7/bin/bootstrap</code> <code class="bash plain">.jar:</code> <code class="bash plain">/usr/local/tomcat7/bin/tomcat-juli</code> <code class="bash plain">.jar</code> </div> <div class="line number9 index8 alt2"> <code class="bash plain">Nov 16, 2016 1:04:05 AM org.apache.catalina.core.AprLifecycleListenerinit</code> </div> <div class="line number10 index9 alt1"> <code class="bash plain">INFO: The APR based Apache Tomcat Native library </code> <code class="bash functions">which</code>  <code class="bash plain">allows optimal performance </code> <code class="bash keyword">in</code>  <code class="bash plain">production environments was not found on the java.library.path: </code> <code class="bash plain">/usr/java/packages/lib/amd64</code> <code class="bash plain">:</code> <code class="bash plain">/usr/lib64</code> <code class="bash plain">:</code> <code class="bash plain">/lib64</code> <code class="bash plain">:</code> <code class="bash plain">/lib</code> <code class="bash plain">:</code> <code class="bash plain">/usr/lib</code> </div> <div class="line number11 index10 alt2"> <code class="bash plain">Nov 16, 2016 1:04:05 AM org.apache.coyote.AbstractProtocolinit</code> </div> <div class="line number12 index11 alt1"> <code class="bash plain">INFO: Initializing ProtocolHandler [</code> <code class="bash string">"http-bio-8080"</code> <code class="bash plain">]</code> </div> <div class="line number13 index12 alt2"> <code class="bash plain">Nov 16, 2016 1:04:05 AM org.apache.coyote.AbstractProtocolinit</code> </div> <div class="line number14 index13 alt1"> <code class="bash plain">INFO: Initializing ProtocolHandler [</code> <code class="bash string">"ajp-bio-8009"</code> <code class="bash plain">]</code> </div> <div class="line number15 index14 alt2"> <code class="bash plain">Nov 16, 2016 1:04:05 AM org.apache.catalina.startup.Catalina load</code> </div> <div class="line number16 index15 alt1"> <code class="bash plain">INFO: Initialization processed </code> <code class="bash keyword">in</code>  <code class="bash plain">534 ms</code> </div> <div class="line number17 index16 alt2"> <code class="bash plain">[root@tomcat-1 ~]</code> <code class="bash comments"># startup.sh </code> </div> <div class="line number18 index17 alt1"> <code class="bash plain">Using CATALINA_BASE:   </code> <code class="bash plain">/usr/local/tomcat7</code> </div> <div class="line number19 index18 alt2"> <code class="bash plain">Using CATALINA_HOME:   </code> <code class="bash plain">/usr/local/tomcat7</code> </div> <div class="line number20 index19 alt1"> <code class="bash plain">Using CATALINA_TMPDIR: </code> <code class="bash plain">/usr/local/tomcat7/temp</code> </div> <div class="line number21 index20 alt2"> <code class="bash plain">Using JRE_HOME:        </code> <code class="bash plain">/usr/local/java</code> </div> <div class="line number22 index21 alt1"> <code class="bash plain">Using CLASSPATH:       </code> <code class="bash plain">/usr/local/tomcat7/bin/bootstrap</code> <code class="bash plain">.jar:</code> <code class="bash plain">/usr/local/tomcat7/bin/tomcat-juli</code> <code class="bash plain">.jar</code> </div> <div class="line number23 index22 alt2"> <code class="bash plain">Tomcat started.</code> </div> <div class="line number24 index23 alt1"> <code class="bash plain">[root@tomcat-1 ~]</code> <code class="bash comments"># netstat -anpt | grep java</code> </div> <div class="line number25 index24 alt2"> <code class="bash plain">tcp6       0      0 :::8009    :::*                    LISTEN      8180</code> <code class="bash plain">/java</code>            </div> <div class="line number26 index25 alt1"> <code class="bash plain">tcp6       0      0 :::8080    :::*                    LISTEN      8180</code> <code class="bash plain">/java</code> </div> </div> </td> </tr> </tbody> </table> </div> </div> <p class="正文"><strong>Tomcat-2节点与tomcat-1节点配置基本类似，只是jvmRoute不同，另外为了区分由哪个节点提供访问，测试页标题也不同（生产环境两个tomcat服务器提供的网页内容是相同的）。其他的配置都相同。</strong></p> <p class="正文"><strong>用浏览器访问nginx主机，验证负载均衡</strong></p> <p class="正文"><strong>第一次访问的结果</strong></p> <p class="正文"><a href="http://img.e-com-net.com/image/info8/43bf65f4a4a7431a952515ab13fb5fe2.png" target="_blank"><img title="XZGG`3(]IJ7)PARZMSUO4FH.png " src="http://img.e-com-net.com/image/info8/43bf65f4a4a7431a952515ab13fb5fe2.png" alt="redis缓存服务器(Nginx+Tomcat+redis+MySQL实现session会话共享)_第3张图片" width="444" height="167" style="border:1px solid black;"></a></p> <p class="正文"><strong>第二次访问的结果</strong></p> <p class="正文"><a href="http://img.e-com-net.com/image/info8/d877a33483ff4a52a366bbbef227731e.png" target="_blank"><img title="4BJLA`2CNU)YY~9]SU}UQKQ.png " src="http://img.e-com-net.com/image/info8/d877a33483ff4a52a366bbbef227731e.png" alt="redis缓存服务器(Nginx+Tomcat+redis+MySQL实现session会话共享)_第4张图片" width="477" height="167" style="border:1px solid black;"></a></p> <p class="正文"><strong>验证健康检查的方法可以关掉一台tomcat主机，用客户端浏览器测试访问。</strong></p> <p class="正文"><strong>从上面的结果能看出两次访问，nginx把访问请求分别分发给了后端的tomcat-1和tomcat-2，客户端的访问请求实现了负载均衡，但sessionid并一样。所以，到这里我们准备工作就全部完成了，下面我们来配置tomcat通过redis实现会话保持。</strong></p> <p class="正文"><strong>5、安装redis</strong></p> <p class="正文"><strong>下载redis源码，并进行相关操作，如下：</strong></p> <div> <div id="highlighter_30974" class="syntaxhighlighter bash"> <table border="0"> <tbody> <tr> <td class="gutter"> <div class="line number1 index0 alt2"> 1 </div> <div class="line number2 index1 alt1"> 2 </div> </td> <td class="code"> <div> <div class="line number1 index0 alt2"> <code class="bash plain">wget </code> </div> <div class="line number2 index1 alt1"> <code class="bash plain">http:</code> <code class="bash plain">//download</code> <code class="bash plain">.redis.io</code> <code class="bash plain">/releases/redis-3</code> <code class="bash plain">.2.3.</code> <code class="bash functions">tar</code> <code class="bash plain">.gz</code> </div> </div> </td> </tr> </tbody> </table> </div> </div> <p class="正文"><strong>解压安装redis</strong></p> <div> <div id="highlighter_277552" class="syntaxhighlighter bash"> <table border="0"> <tbody> <tr> <td class="gutter"> <div class="line number1 index0 alt2"> 1 </div> </td> <td class="code"> <div> <div class="line number1 index0 alt2"> <code class="bash plain">[root@redis ~]</code> <code class="bash comments"># tar zxf redis-3.2.3.tar.gz</code> </div> </div> </td> </tr> </tbody> </table> </div> </div> <p class="正文"><strong>解压完毕后，现在开始安装，如下：</strong></p> <div> <div id="highlighter_892063" class="syntaxhighlighter bash"> <table border="0"> <tbody> <tr> <td class="gutter"> <div class="line number1 index0 alt2"> 1 </div> <div class="line number2 index1 alt1"> 2 </div> </td> <td class="code"> <div> <div class="line number1 index0 alt2"> <code class="bash plain">[root@redis ~]</code> <code class="bash comments"># cd redis-3.2.3/</code> </div> <div class="line number2 index1 alt1"> <code class="bash plain">[root@redis redis-3.2.3]</code> <code class="bash comments"># make&& make install</code> </div> </div> </td> </tr> </tbody> </table> </div> </div> <p class="正文"><a href="http://img.e-com-net.com/image/info8/7d9a051923ae4eb1a18bcefa49af3155.png" target="_blank"><img title="DL@ZNHMAL$D3~BS{5LE(EDE.png" src="http://img.e-com-net.com/image/info8/7d9a051923ae4eb1a18bcefa49af3155.png" alt="redis缓存服务器(Nginx+Tomcat+redis+MySQL实现session会话共享)_第5张图片" width="380" height="152" style="border:1px solid black;"></a></p> <p class="正文"><a href="http://img.e-com-net.com/image/info8/0d91287873a64c59a0c7421329b4d730.png" target="_blank"><img title="]$_~FS2`(2RA1%X0{YVNS77.png " src="http://img.e-com-net.com/image/info8/0d91287873a64c59a0c7421329b4d730.png" alt="redis缓存服务器(Nginx+Tomcat+redis+MySQL实现session会话共享)_第6张图片" width="408" height="208" style="border:1px solid black;"></a></p> <p class="正文"><strong>通过上图，我们可以很容易的看出，redis安装到/usr/local,/usr/local/bin,/usr/local/share,/usr/local/include,/usr/local/lib,/usr/local/share/man目录下。</strong></p> <p class="正文"><strong>然后再切换到utils目录下，执行redis初始化脚本install_server.sh，如下：</strong></p> <div> <div id="highlighter_281243" class="syntaxhighlighter bash"> <table border="0"> <tbody> <tr> <td class="gutter"> <div class="line number1 index0 alt2"> 1 </div> <div class="line number2 index1 alt1"> 2 </div> <div class="line number3 index2 alt2"> 3 </div> <div class="line number4 index3 alt1"> 4 </div> <div class="line number5 index4 alt2"> 5 </div> <div class="line number6 index5 alt1"> 6 </div> <div class="line number7 index6 alt2"> 7 </div> <div class="line number8 index7 alt1"> 8 </div> <div class="line number9 index8 alt2"> 9 </div> <div class="line number10 index9 alt1"> 10 </div> <div class="line number11 index10 alt2"> 11 </div> <div class="line number12 index11 alt1"> 12 </div> <div class="line number13 index12 alt2"> 13 </div> <div class="line number14 index13 alt1"> 14 </div> <div class="line number15 index14 alt2"> 15 </div> <div class="line number16 index15 alt1"> 16 </div> <div class="line number17 index16 alt2"> 17 </div> <div class="line number18 index17 alt1"> 18 </div> <div class="line number19 index18 alt2"> 19 </div> <div class="line number20 index19 alt1"> 20 </div> <div class="line number21 index20 alt2"> 21 </div> <div class="line number22 index21 alt1"> 22 </div> <div class="line number23 index22 alt2"> 23 </div> <div class="line number24 index23 alt1"> 24 </div> <div class="line number25 index24 alt2"> 25 </div> <div class="line number26 index25 alt1"> 26 </div> <div class="line number27 index26 alt2"> 27 </div> <div class="line number28 index27 alt1"> 28 </div> </td> <td class="code"> <div> <div class="line number1 index0 alt2"> <code class="bash plain">[root@redis redis-3.2.3]</code> <code class="bash comments"># cdutils/</code> </div> <div class="line number2 index1 alt1"> <code class="bash plain">[root@redisutils]</code> <code class="bash comments"># ./install_server.sh</code> </div> <div class="line number3 index2 alt2"> <code class="bash plain">Welcome to the redis service installer</code> </div> <div class="line number4 index3 alt1"> <code class="bash plain">This script will help you easily </code> <code class="bash functions">set</code>  <code class="bash plain">up a running redis server</code> </div> <div class="line number5 index4 alt2"> <code class="bash spaces"> </code>  </div> <div class="line number6 index5 alt1"> <code class="bash plain">Please </code> <code class="bash functions">select</code>  <code class="bash plain">the redis port </code> <code class="bash keyword">for</code>  <code class="bash plain">this instance: [6379] </code> </div> <div class="line number7 index6 alt2"> <code class="bash plain">Selecting default: 6379</code> </div> <div class="line number8 index7 alt1"> <code class="bash plain">Please </code> <code class="bash functions">select</code>  <code class="bash plain">the redisconfig </code> <code class="bash functions">file</code>  <code class="bash plain">name [</code> <code class="bash plain">/etc/redis/6379</code> <code class="bash plain">.conf] </code> </div> <div class="line number9 index8 alt2"> <code class="bash plain">Selected default - </code> <code class="bash plain">/etc/redis/6379</code> <code class="bash plain">.conf</code> </div> <div class="line number10 index9 alt1"> <code class="bash plain">Please </code> <code class="bash functions">select</code>  <code class="bash plain">the redis log </code> <code class="bash functions">file</code>  <code class="bash plain">name [</code> <code class="bash plain">/var/log/redis_6379</code> <code class="bash plain">.log]</code> </div> <div class="line number11 index10 alt2"> <code class="bash plain">Selected default - </code> <code class="bash plain">/var/log/redis_6379</code> <code class="bash plain">.log</code> </div> <div class="line number12 index11 alt1"> <code class="bash plain">Please </code> <code class="bash functions">select</code>  <code class="bash plain">the data directory </code> <code class="bash keyword">for</code>  <code class="bash plain">this instance [</code> <code class="bash plain">/var/lib/redis/6379</code> <code class="bash plain">] </code> </div> <div class="line number13 index12 alt2"> <code class="bash plain">Selected default - </code> <code class="bash plain">/var/lib/redis/6379</code> </div> <div class="line number14 index13 alt1"> <code class="bash plain">Please </code> <code class="bash functions">select</code>  <code class="bash plain">the redis executable path [</code> <code class="bash plain">/usr/local/bin/redis-server</code> <code class="bash plain">] </code> </div> <div class="line number15 index14 alt2"> <code class="bash plain">Selected config:</code> </div> <div class="line number16 index15 alt1"> <code class="bash plain">Port           : 6379</code> </div> <div class="line number17 index16 alt2"> <code class="bash plain">Config </code> <code class="bash functions">file</code>     <code class="bash plain">: </code> <code class="bash plain">/etc/redis/6379</code> <code class="bash plain">.conf</code> </div> <div class="line number18 index17 alt1"> <code class="bash plain">Log </code> <code class="bash functions">file</code>        <code class="bash plain">: </code> <code class="bash plain">/var/log/redis_6379</code> <code class="bash plain">.log</code> </div> <div class="line number19 index18 alt2"> <code class="bash plain">Data </code> <code class="bash functions">dir</code>        <code class="bash plain">: </code> <code class="bash plain">/var/lib/redis/6379</code> </div> <div class="line number20 index19 alt1"> <code class="bash plain">Executable     : </code> <code class="bash plain">/usr/local/bin/redis-server</code> </div> <div class="line number21 index20 alt2"> <code class="bash plain">CliExecutable : </code> <code class="bash plain">/usr/local/bin/redis-cli</code> </div> <div class="line number22 index21 alt1"> <code class="bash plain">Is this ok? Then press ENTER to go on or Ctrl-C to abort.</code> </div> <div class="line number23 index22 alt2"> <code class="bash plain">Copied </code> <code class="bash plain">/tmp/6379</code> <code class="bash plain">.conf => </code> <code class="bash plain">/etc/init</code> <code class="bash plain">.d</code> <code class="bash plain">/redis_6379</code> </div> <div class="line number24 index23 alt1"> <code class="bash plain">Installing service...</code> </div> <div class="line number25 index24 alt2"> <code class="bash plain">Successfully added to chkconfig!</code> </div> <div class="line number26 index25 alt1"> <code class="bash plain">Successfully added to runlevels 345!</code> </div> <div class="line number27 index26 alt2"> <code class="bash plain">Starting Redis server...</code> </div> <div class="line number28 index27 alt1"> <code class="bash plain">Installation successful!</code> </div> </div> </td> </tr> </tbody> </table> </div> </div> <p class="正文"><strong>通过上面的安装过程，我们可以看出redis初始化后redis配置文件为/etc/redis/6379.conf，日志文件为/var/log/redis_6379.log，数据文件dump.rdb存放到/var/lib/redis/6379目录下，启动脚本为/etc/init.d/redis_6379。</strong></p> <p class="正文"><strong>现在我们要使用systemd，所以在 /etc/systems/system 下创建一个单位文件名字为 redis_6379.service。</strong></p> <div> <div id="highlighter_434817" class="syntaxhighlighter bash"> <table border="0"> <tbody> <tr> <td class="gutter"> <div class="line number1 index0 alt2"> 1 </div> </td> <td class="code"> <div> <div class="line number1 index0 alt2"> <code class="bash plain">[root@redisutils]</code> <code class="bash comments"># vi /etc/systemd/system/redis_6379.service</code> </div> </div> </td> </tr> </tbody> </table> </div> </div> <p class="正文"><strong>内容如下：</strong></p> <div> <div id="highlighter_8125" class="syntaxhighlighter bash"> <table border="0"> <tbody> <tr> <td class="gutter"> <div class="line number1 index0 alt2"> 1 </div> <div class="line number2 index1 alt1"> 2 </div> <div class="line number3 index2 alt2"> 3 </div> <div class="line number4 index3 alt1"> 4 </div> <div class="line number5 index4 alt2"> 5 </div> <div class="line number6 index5 alt1"> 6 </div> <div class="line number7 index6 alt2"> 7 </div> <div class="line number8 index7 alt1"> 8 </div> </td> <td class="code"> <div> <div class="line number1 index0 alt2"> <code class="bash plain">[Unit]</code> </div> <div class="line number2 index1 alt1"> <code class="bash plain">Description=Redis on port 6379</code> </div> <div class="line number3 index2 alt2"> <code class="bash plain">[Service]</code> </div> <div class="line number4 index3 alt1"> <code class="bash plain">Type=forking</code> </div> <div class="line number5 index4 alt2"> <code class="bash plain">ExecStart=</code> <code class="bash plain">/etc/init</code> <code class="bash plain">.d</code> <code class="bash plain">/redis_6379</code>  <code class="bash plain">start</code> </div> <div class="line number6 index5 alt1"> <code class="bash plain">ExecStop=</code> <code class="bash plain">/etc/init</code> <code class="bash plain">.d</code> <code class="bash plain">/redis_6379</code>  <code class="bash plain">stop</code> </div> <div class="line number7 index6 alt2"> <code class="bash plain">[Install]</code> </div> <div class="line number8 index7 alt1"> <code class="bash plain">WantedBy=multi-user.target</code> </div> </div> </td> </tr> </tbody> </table> </div> </div> <p class="正文"><strong>注：这里Type=forking是后台运行的形式</strong></p> <p class="正文"><strong>启动redis</strong></p> <div> <div id="highlighter_483145" class="syntaxhighlighter bash"> <table border="0"> <tbody> <tr> <td class="gutter"> <div class="line number1 index0 alt2"> 1 </div> <div class="line number2 index1 alt1"> 2 </div> <div class="line number3 index2 alt2"> 3 </div> <div class="line number4 index3 alt1"> 4 </div> <div class="line number5 index4 alt2"> 5 </div> <div class="line number6 index5 alt1"> 6 </div> <div class="line number7 index6 alt2"> 7 </div> <div class="line number8 index7 alt1"> 8 </div> <div class="line number9 index8 alt2"> 9 </div> <div class="line number10 index9 alt1"> 10 </div> <div class="line number11 index10 alt2"> 11 </div> <div class="line number12 index11 alt1"> 12 </div> <div class="line number13 index12 alt2"> 13 </div> <div class="line number14 index13 alt1"> 14 </div> <div class="line number15 index14 alt2"> 15 </div> <div class="line number16 index15 alt1"> 16 </div> <div class="line number17 index16 alt2"> 17 </div> </td> <td class="code"> <div> <div class="line number1 index0 alt2"> <code class="bash plain">[root@redisutils]</code> <code class="bash comments"># systemctl daemon-reload </code> </div> <div class="line number2 index1 alt1"> <code class="bash plain">[root@redisutils]</code> <code class="bash comments"># systemctl enable redis_6379.service</code> </div> <div class="line number3 index2 alt2"> <code class="bash plain">[root@redisutils]</code> <code class="bash comments"># systemctl start redis_6379.service</code> </div> <div class="line number4 index3 alt1"> <code class="bash plain">[root@redisutils]</code> <code class="bash comments"># systemctl status redis_6379.service </code> </div> <div class="line number5 index4 alt2"> <code class="bash plain">● redis_6379.service - Redis on port 6379</code> </div> <div class="line number6 index5 alt1"> <code class="bash spaces">   </code> <code class="bash plain">Loaded: loaded (</code> <code class="bash plain">/etc/systemd/system/redis_6379</code> <code class="bash plain">.service; enabled; vendor preset: disabled)</code> </div> <div class="line number7 index6 alt2"> <code class="bash spaces">   </code> <code class="bash plain">Active: active (running) since Wed 2016-11-16 21:07:26 CST; 4min 25s ago</code> </div> <div class="line number8 index7 alt1"> <code class="bash spaces">  </code> <code class="bash plain">Process: 7732 ExecStart=</code> <code class="bash plain">/etc/init</code> <code class="bash plain">.d</code> <code class="bash plain">/redis_6379</code>  <code class="bash plain">start (code=exited, status=0</code> <code class="bash plain">/SUCCESS</code> <code class="bash plain">)</code> </div> <div class="line number9 index8 alt2"> <code class="bash spaces"> </code> <code class="bash plain">Main PID: 7734 (redis-server)</code> </div> <div class="line number10 index9 alt1"> <code class="bash plain">CGroup: </code> <code class="bash plain">/system</code> <code class="bash plain">.slice</code> <code class="bash plain">/redis_6379</code> <code class="bash plain">.service</code> </div> <div class="line number11 index10 alt2"> <code class="bash plain">└─7734 </code> <code class="bash plain">/usr/local/bin/redis-server</code>  <code class="bash plain">127.0.0.1:6379</code> </div> <div class="line number12 index11 alt1"> <code class="bash spaces"> </code>  </div> <div class="line number13 index12 alt2"> <code class="bash plain">Nov 16 21:07:26 redissystemd[1]: Starting Redis on port 6379...</code> </div> <div class="line number14 index13 alt1"> <code class="bash plain">Nov 16 21:07:26 redis redis_6379[7732]: Starting Redis server...</code> </div> <div class="line number15 index14 alt2"> <code class="bash plain">Nov 16 21:07:26 redissystemd[1]: Started Redis on port 6379.</code> </div> <div class="line number16 index15 alt1"> <code class="bash plain">[root@redisutils]</code> <code class="bash comments"># netstat -anpt | grep 6379</code> </div> <div class="line number17 index16 alt2"> <code class="bash plain">tcp        0      0 127.0.0.1:6379     0.0.0.0:*     LISTEN      7734</code> <code class="bash plain">/redis-server</code>  <code class="bash plain">1</code> </div> </div> </td> </tr> </tbody> </table> </div> </div> <p class="正文"><strong>从显示结果可以看到redis默认监听的是127.0.0.1的6379端口</strong></p> <p class="正文"><strong>防火墙规则设置</strong></p> <div> <div id="highlighter_991695" class="syntaxhighlighter bash"> <table border="0"> <tbody> <tr> <td class="gutter"> <div class="line number1 index0 alt2"> 1 </div> <div class="line number2 index1 alt1"> 2 </div> <div class="line number3 index2 alt2"> 3 </div> <div class="line number4 index3 alt1"> 4 </div> </td> <td class="code"> <div> <div class="line number1 index0 alt2"> <code class="bash plain">[root@redisutils]</code> <code class="bash comments"># firewall-cmd --permanent --add-port=6379/tcp</code> </div> <div class="line number2 index1 alt1"> <code class="bash plain">success</code> </div> <div class="line number3 index2 alt2"> <code class="bash plain">[root@redisutils]</code> <code class="bash comments"># firewall-cmd --reload </code> </div> <div class="line number4 index3 alt1"> <code class="bash plain">success</code> </div> </div> </td> </tr> </tbody> </table> </div> </div> <p class="正文"><strong>现在来查看redis版本使用redis-cli –version命令，如下</strong></p> <div> <div id="highlighter_159718" class="syntaxhighlighter bash"> <table border="0"> <tbody> <tr> <td class="gutter"> <div class="line number1 index0 alt2"> 1 </div> <div class="line number2 index1 alt1"> 2 </div> </td> <td class="code"> <div> <div class="line number1 index0 alt2"> <code class="bash plain">[root@redisutils]</code> <code class="bash comments"># redis-cli --version</code> </div> <div class="line number2 index1 alt1"> <code class="bash plain">redis-cli 3.2.3</code> </div> </div> </td> </tr> </tbody> </table> </div> </div> <p class="正文"><strong>通过显示结果，我们可以看到redis版本是3.2.3。</strong></p> <p class="无间隔"><strong>到此源码方式安装redis就介绍完毕。</strong></p> <p class="无间隔"><strong>redis安装完毕之后，我们再来配置redis</strong></p> <p class="无间隔"><strong>设置redis监听的地址，添加监听redis主机的ip</strong></p> <p class="无间隔"><strong>考虑到安全性，我们需要启用redis的密码验证功能requirepass参数</strong></p> <p class="无间隔"><strong>最终redis配置文件如下：</strong></p> <div> <div id="highlighter_819818" class="syntaxhighlighter bash"> <table border="0"> <tbody> <tr> <td class="gutter"> <div class="line number1 index0 alt2"> 1 </div> <div class="line number2 index1 alt1"> 2 </div> <div class="line number3 index2 alt2"> 3 </div> <div class="line number4 index3 alt1"> 4 </div> <div class="line number5 index4 alt2"> 5 </div> <div class="line number6 index5 alt1"> 6 </div> <div class="line number7 index6 alt2"> 7 </div> <div class="line number8 index7 alt1"> 8 </div> <div class="line number9 index8 alt2"> 9 </div> <div class="line number10 index9 alt1"> 10 </div> <div class="line number11 index10 alt2"> 11 </div> <div class="line number12 index11 alt1"> 12 </div> <div class="line number13 index12 alt2"> 13 </div> <div class="line number14 index13 alt1"> 14 </div> <div class="line number15 index14 alt2"> 15 </div> <div class="line number16 index15 alt1"> 16 </div> <div class="line number17 index16 alt2"> 17 </div> <div class="line number18 index17 alt1"> 18 </div> <div class="line number19 index18 alt2"> 19 </div> <div class="line number20 index19 alt1"> 20 </div> <div class="line number21 index20 alt2"> 21 </div> <div class="line number22 index21 alt1"> 22 </div> <div class="line number23 index22 alt2"> 23 </div> <div class="line number24 index23 alt1"> 24 </div> <div class="line number25 index24 alt2"> 25 </div> <div class="line number26 index25 alt1"> 26 </div> <div class="line number27 index26 alt2"> 27 </div> <div class="line number28 index27 alt1"> 28 </div> <div class="line number29 index28 alt2"> 29 </div> <div class="line number30 index29 alt1"> 30 </div> <div class="line number31 index30 alt2"> 31 </div> <div class="line number32 index31 alt1"> 32 </div> <div class="line number33 index32 alt2"> 33 </div> <div class="line number34 index33 alt1"> 34 </div> <div class="line number35 index34 alt2"> 35 </div> <div class="line number36 index35 alt1"> 36 </div> <div class="line number37 index36 alt2"> 37 </div> <div class="line number38 index37 alt1"> 38 </div> <div class="line number39 index38 alt2"> 39 </div> <div class="line number40 index39 alt1"> 40 </div> <div class="line number41 index40 alt2"> 41 </div> <div class="line number42 index41 alt1"> 42 </div> <div class="line number43 index42 alt2"> 43 </div> <div class="line number44 index43 alt1"> 44 </div> <div class="line number45 index44 alt2"> 45 </div> <div class="line number46 index45 alt1"> 46 </div> <div class="line number47 index46 alt2"> 47 </div> <div class="line number48 index47 alt1"> 48 </div> <div class="line number49 index48 alt2"> 49 </div> <div class="line number50 index49 alt1"> 50 </div> <div class="line number51 index50 alt2"> 51 </div> <div class="line number52 index51 alt1"> 52 </div> <div class="line number53 index52 alt2"> 53 </div> <div class="line number54 index53 alt1"> 54 </div> </td> <td class="code"> <div> <div class="line number1 index0 alt2"> <code class="bash plain">[root@redis ~]</code> <code class="bash comments"># grep -Ev '^#|^$' /etc/redis/6379.conf </code> </div> <div class="line number2 index1 alt1"> <code class="bash plain">bind 127.0.0.1 192.168.31.106</code> </div> <div class="line number3 index2 alt2"> <code class="bash plain">protected-mode </code> <code class="bash functions">yes</code> </div> <div class="line number4 index3 alt1"> <code class="bash plain">port 6379</code> </div> <div class="line number5 index4 alt2"> <code class="bash plain">tcp-backlog 511</code> </div> <div class="line number6 index5 alt1"> <code class="bash plain">timeout 0</code> </div> <div class="line number7 index6 alt2"> <code class="bash plain">tcp-keepalive 300</code> </div> <div class="line number8 index7 alt1"> <code class="bash plain">daemonize </code> <code class="bash functions">yes</code> </div> <div class="line number9 index8 alt2"> <code class="bash plain">supervised no</code> </div> <div class="line number10 index9 alt1"> <code class="bash plain">pidfile </code> <code class="bash plain">/var/run/redis_6379</code> <code class="bash plain">.pid</code> </div> <div class="line number11 index10 alt2"> <code class="bash plain">loglevel notice</code> </div> <div class="line number12 index11 alt1"> <code class="bash plain">logfile </code> <code class="bash plain">/var/log/redis_6379</code> <code class="bash plain">.log</code> </div> <div class="line number13 index12 alt2"> <code class="bash plain">databases 16</code> </div> <div class="line number14 index13 alt1"> <code class="bash plain">save 900 1</code> </div> <div class="line number15 index14 alt2"> <code class="bash plain">save 300 10</code> </div> <div class="line number16 index15 alt1"> <code class="bash plain">save 60 10000</code> </div> <div class="line number17 index16 alt2"> <code class="bash plain">stop-writes-on-bgsave-error </code> <code class="bash functions">yes</code> </div> <div class="line number18 index17 alt1"> <code class="bash plain">rdbcompression </code> <code class="bash functions">yes</code> </div> <div class="line number19 index18 alt2"> <code class="bash plain">rdbchecksum </code> <code class="bash functions">yes</code> </div> <div class="line number20 index19 alt1"> <code class="bash plain">dbfilenamedump.rdb</code> </div> <div class="line number21 index20 alt2"> <code class="bash functions">dir</code>  <code class="bash plain">/var/lib/redis/6379</code> </div> <div class="line number22 index21 alt1"> <code class="bash plain">slave-serve-stale-data </code> <code class="bash functions">yes</code> </div> <div class="line number23 index22 alt2"> <code class="bash plain">slave-</code> <code class="bash functions">read</code> <code class="bash plain">-only </code> <code class="bash functions">yes</code> </div> <div class="line number24 index23 alt1"> <code class="bash plain">repl-diskless-</code> <code class="bash functions">sync</code>  <code class="bash plain">no</code> </div> <div class="line number25 index24 alt2"> <code class="bash plain">repl-diskless-</code> <code class="bash functions">sync</code> <code class="bash plain">-delay 5</code> </div> <div class="line number26 index25 alt1"> <code class="bash plain">repl-disable-tcp-nodelay no</code> </div> <div class="line number27 index26 alt2"> <code class="bash plain">slave-priority 100</code> </div> <div class="line number28 index27 alt1"> <code class="bash plain">requirepass </code> <code class="bash functions">pwd</code> <code class="bash plain">@123</code> </div> <div class="line number29 index28 alt2"> <code class="bash plain">appendonly no</code> </div> <div class="line number30 index29 alt1"> <code class="bash plain">appendfilename </code> <code class="bash string">"appendonly.aof"</code> </div> <div class="line number31 index30 alt2"> <code class="bash plain">appendfsynceverysec</code> </div> <div class="line number32 index31 alt1"> <code class="bash plain">no-appendfsync-on-rewrite no</code> </div> <div class="line number33 index32 alt2"> <code class="bash plain">auto-aof-rewrite-percentage 100</code> </div> <div class="line number34 index33 alt1"> <code class="bash plain">auto-aof-rewrite-min-size 64mb</code> </div> <div class="line number35 index34 alt2"> <code class="bash plain">aof-load-truncated </code> <code class="bash functions">yes</code> </div> <div class="line number36 index35 alt1"> <code class="bash plain">lua-</code> <code class="bash functions">time</code> <code class="bash plain">-limit 5000</code> </div> <div class="line number37 index36 alt2"> <code class="bash plain">slowlog-log-slower-than 10000</code> </div> <div class="line number38 index37 alt1"> <code class="bash plain">slowlog-max-len 128</code> </div> <div class="line number39 index38 alt2"> <code class="bash plain">latency-monitor-threshold 0</code> </div> <div class="line number40 index39 alt1"> <code class="bash plain">notify-keyspace-events </code> <code class="bash string">""</code> </div> <div class="line number41 index40 alt2"> <code class="bash functions">hash</code> <code class="bash plain">-max-ziplist-entries 512</code> </div> <div class="line number42 index41 alt1"> <code class="bash functions">hash</code> <code class="bash plain">-max-ziplist-value 64</code> </div> <div class="line number43 index42 alt2"> <code class="bash plain">list-max-ziplist-size -2</code> </div> <div class="line number44 index43 alt1"> <code class="bash plain">list-compress-depth 0</code> </div> <div class="line number45 index44 alt2"> <code class="bash functions">set</code> <code class="bash plain">-max-intset-entries 512</code> </div> <div class="line number46 index45 alt1"> <code class="bash plain">zset-max-ziplist-entries 128</code> </div> <div class="line number47 index46 alt2"> <code class="bash plain">zset-max-ziplist-value 64</code> </div> <div class="line number48 index47 alt1"> <code class="bash plain">hll-sparse-max-bytes 3000</code> </div> <div class="line number49 index48 alt2"> <code class="bash plain">activerehashing </code> <code class="bash functions">yes</code> </div> <div class="line number50 index49 alt1"> <code class="bash plain">client-output-buffer-limit normal 0 0 0</code> </div> <div class="line number51 index50 alt2"> <code class="bash plain">client-output-buffer-limit slave 256mb 64mb 60</code> </div> <div class="line number52 index51 alt1"> <code class="bash plain">client-output-buffer-limitpubsub 32mb 8mb 60</code> </div> <div class="line number53 index52 alt2"> <code class="bash plain">hz 10</code> </div> <div class="line number54 index53 alt1"> <code class="bash plain">aof-rewrite-incremental-fsync </code> <code class="bash functions">yes</code> </div> </div> </td> </tr> </tbody> </table> </div> </div> <p class="无间隔"><strong>重新启动redis服务</strong></p> <div> <div id="highlighter_727089" class="syntaxhighlighter bash"> <table border="0"> <tbody> <tr> <td class="gutter"> <div class="line number1 index0 alt2"> 1 </div> <div class="line number2 index1 alt1"> 2 </div> <div class="line number3 index2 alt2"> 3 </div> </td> <td class="code"> <div> <div class="line number1 index0 alt2"> <code class="bash plain">[root@redis ~]</code> <code class="bash comments"># systemctl restart redis_6379.service</code> </div> <div class="line number2 index1 alt1"> <code class="bash plain">[root@redis ~]</code> <code class="bash comments"># netstat -anpt | grep redis</code> </div> <div class="line number3 index2 alt2"> <code class="bash plain">tcp   0   0 192.168.31.106:6379     0.0.0.0:*   LISTEN      8418</code> <code class="bash plain">/redis-server</code>  <code class="bash plain">1</code> </div> </div> </td> </tr> </tbody> </table> </div> </div> <p class="无间隔"><strong>redis配置文件配置完毕后，我们来启动redis并进行简单的操作。如下：</strong></p> <div> <div id="highlighter_377988" class="syntaxhighlighter bash"> <table border="0"> <tbody> <tr> <td class="gutter"> <div class="line number1 index0 alt2"> 1 </div> <div class="line number2 index1 alt1"> 2 </div> <div class="line number3 index2 alt2"> 3 </div> <div class="line number4 index3 alt1"> 4 </div> <div class="line number5 index4 alt2"> 5 </div> <div class="line number6 index5 alt1"> 6 </div> <div class="line number7 index6 alt2"> 7 </div> <div class="line number8 index7 alt1"> 8 </div> </td> <td class="code"> <div> <div class="line number1 index0 alt2"> <code class="bash plain">[root@redis ~]</code> <code class="bash comments"># redis-cli -h 192.168.31.106 -p 6379 -a pwd@123</code> </div> <div class="line number2 index1 alt1"> <code class="bash plain">192.168.31.106:6379> keys *</code> </div> <div class="line number3 index2 alt2"> <code class="bash plain">(empty list or </code> <code class="bash functions">set</code> <code class="bash plain">)</code> </div> <div class="line number4 index3 alt1"> <code class="bash plain">192.168.31.106:6379> </code> <code class="bash functions">set</code>  <code class="bash plain">name lisi</code> </div> <div class="line number5 index4 alt2"> <code class="bash plain">OK</code> </div> <div class="line number6 index5 alt1"> <code class="bash plain">192.168.31.106:6379> get name</code> </div> <div class="line number7 index6 alt2"> <code class="bash string">"lisi"</code> </div> <div class="line number8 index7 alt1"> <code class="bash plain">192.168.31.106:6379></code> </div> </div> </td> </tr> </tbody> </table> </div> </div> <p class="无间隔"><strong>说明：</strong></p> <p class="无间隔"><strong>关于redis-cli -h 192.168.31.106 -p 6379 -a pwd@123的参数解释</strong></p> <p class="无间隔"><strong>这条命令是说要连接redis服务器，IP是192.168.31.106，端口是6379，密码是pwd@123。</strong></p> <p class="无间隔"><strong>keys *是查看redis所有的键值对。</strong></p> <p class="无间隔"><strong>set namelisi添加一个键值name，内容为lisi。</strong></p> <p class="无间隔"><strong>get name查看name这个键值的内容。</strong></p> <p class="无间隔"><strong>redis的命令使用暂时我们就介绍这么多</strong></p> <p class="无间隔"><strong>6、配置tomcat session redis同步</strong></p> <p class="无间隔"><strong>下载tomcat-redis-session-manager相应的jar包，主要有三个：</strong></p> <div> <div id="highlighter_962989" class="syntaxhighlighter bash"> <table border="0"> <tbody> <tr> <td class="gutter"> <div class="line number1 index0 alt2"> 1 </div> <div class="line number2 index1 alt1"> 2 </div> <div class="line number3 index2 alt2"> 3 </div> </td> <td class="code"> <div> <div class="line number1 index0 alt2"> <code class="bash plain">tomcat-redis-session-manage-tomcat7.jar</code> </div> <div class="line number2 index1 alt1"> <code class="bash plain">jedis-2.5.2.jar</code> </div> <div class="line number3 index2 alt2"> <code class="bash plain">commons-pool2-2.2.jar</code> </div> </div> </td> </tr> </tbody> </table> </div> </div> <p class="无间隔"><strong>下载完成后拷贝到$TOMCAT_HOME/lib中</strong></p> <div> <div id="highlighter_292922" class="syntaxhighlighter bash"> <table border="0"> <tbody> <tr> <td class="gutter"> <div class="line number1 index0 alt2"> 1 </div> </td> <td class="code"> <div> <div class="line number1 index0 alt2"> <code class="bash plain">[root@tomcat-1 ~]</code> <code class="bash comments"># cp tomcat-redis-session-manage-tomcat7.jar jedis-2.5.2.jar commons-pool2-2.2.jar /usr/local/tomcat7/lib/</code> </div> </div> </td> </tr> </tbody> </table> </div> </div> <p class="无间隔"><strong>修改tomcat的context.xml：</strong></p> <div> <div id="highlighter_471091" class="syntaxhighlighter bash"> <table border="0"> <tbody> <tr> <td class="gutter"> <div class="line number1 index0 alt2"> 1 </div> <div class="line number2 index1 alt1"> 2 </div> <div class="line number3 index2 alt2"> 3 </div> <div class="line number4 index3 alt1"> 4 </div> <div class="line number5 index4 alt2"> 5 </div> <div class="line number6 index5 alt1"> 6 </div> <div class="line number7 index6 alt2"> 7 </div> <div class="line number8 index7 alt1"> 8 </div> <div class="line number9 index8 alt2"> 9 </div> <div class="line number10 index9 alt1"> 10 </div> <div class="line number11 index10 alt2"> 11 </div> <div class="line number12 index11 alt1"> 12 </div> <div class="line number13 index12 alt2"> 13 </div> <div class="line number14 index13 alt1"> 14 </div> <div class="line number15 index14 alt2"> 15 </div> <div class="line number16 index15 alt1"> 16 </div> <div class="line number17 index16 alt2"> 17 </div> <div class="line number18 index17 alt1"> 18 </div> <div class="line number19 index18 alt2"> 19 </div> <div class="line number20 index19 alt1"> 20 </div> <div class="line number21 index20 alt2"> 21 </div> <div class="line number22 index21 alt1"> 22 </div> <div class="line number23 index22 alt2"> 23 </div> <div class="line number24 index23 alt1"> 24 </div> <div class="line number25 index24 alt2"> 25 </div> <div class="line number26 index25 alt1"> 26 </div> <div class="line number27 index26 alt2"> 27 </div> <div class="line number28 index27 alt1"> 28 </div> <div class="line number29 index28 alt2"> 29 </div> <div class="line number30 index29 alt1"> 30 </div> <div class="line number31 index30 alt2"> 31 </div> <div class="line number32 index31 alt1"> 32 </div> <div class="line number33 index32 alt2"> 33 </div> <div class="line number34 index33 alt1"> 34 </div> <div class="line number35 index34 alt2"> 35 </div> <div class="line number36 index35 alt1"> 36 </div> <div class="line number37 index36 alt2"> 37 </div> </td> <td class="code"> <div> <div class="line number1 index0 alt2"> <code class="bash plain">[root@tomcat-1 ~]</code> <code class="bash comments"># cat /usr/local/tomcat7/conf/context.xml </code> </div> <div class="line number2 index1 alt1"> <code class="bash plain"><?xml version=</code> <code class="bash string">'1.0'</code>  <code class="bash plain">encoding=</code> <code class="bash string">'utf-8'</code> <code class="bash plain">?></code> </div> <div class="line number3 index2 alt2"> <code class="bash plain"><!--</code> </div> <div class="line number4 index3 alt1"> <code class="bash spaces">  </code> <code class="bash plain">Licensed to the Apache Software Foundation (ASF) under one or </code> <code class="bash functions">more</code> </div> <div class="line number5 index4 alt2"> <code class="bash plain">contributor license agreements.  See the NOTICE </code> <code class="bash functions">file</code>  <code class="bash plain">distributed with</code> </div> <div class="line number6 index5 alt1"> <code class="bash plain">this work </code> <code class="bash keyword">for</code>  <code class="bash plain">additional information regarding copyright ownership.</code> </div> <div class="line number7 index6 alt2"> <code class="bash spaces">  </code> <code class="bash plain">The ASF licenses this </code> <code class="bash functions">file</code>  <code class="bash plain">to You under the Apache License, Version 2.0</code> </div> <div class="line number8 index7 alt1"> <code class="bash spaces">  </code> <code class="bash plain">(the </code> <code class="bash string">"License"</code> <code class="bash plain">); you may not use this </code> <code class="bash functions">file</code>  <code class="bash plain">except </code> <code class="bash keyword">in</code>  <code class="bash plain">compliance with</code> </div> <div class="line number9 index8 alt2"> <code class="bash plain">the License.  You may obtain a copy of the License at</code> </div> <div class="line number10 index9 alt1"> <code class="bash spaces">      </code> <code class="bash plain">http:</code> <code class="bash plain">//www</code> <code class="bash plain">.apache.org</code> <code class="bash plain">/licenses/LICENSE-2</code> <code class="bash plain">.0</code> </div> <div class="line number11 index10 alt2"> <code class="bash spaces">  </code> <code class="bash plain">Unless required by applicable law or agreed to </code> <code class="bash keyword">in</code>  <code class="bash plain">writing, software</code> </div> <div class="line number12 index11 alt1"> <code class="bash plain">distributed under the License is distributed on an </code> <code class="bash string">"AS IS"</code>  <code class="bash plain">BASIS,</code> </div> <div class="line number13 index12 alt2"> <code class="bash spaces">  </code> <code class="bash plain">WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.</code> </div> <div class="line number14 index13 alt1"> <code class="bash spaces">  </code> <code class="bash plain">See the License </code> <code class="bash keyword">for</code>  <code class="bash plain">the specific language governing permissions and</code> </div> <div class="line number15 index14 alt2"> <code class="bash plain">limitations under the License.</code> </div> <div class="line number16 index15 alt1"> <code class="bash plain">--></code> </div> <div class="line number17 index16 alt2"> <code class="bash plain"><!-- The contents of this </code> <code class="bash functions">file</code>  <code class="bash plain">will be loaded </code> <code class="bash keyword">for</code>  <code class="bash plain">each web application --></code> </div> <div class="line number18 index17 alt1"> <code class="bash plain"><Context></code> </div> <div class="line number19 index18 alt2"> <code class="bash plain"><!-- Default </code> <code class="bash functions">set</code>  <code class="bash plain">of monitored resources --></code> </div> <div class="line number20 index19 alt1"> <code class="bash plain"><WatchedResource>WEB-INF</code> <code class="bash plain">/web</code> <code class="bash plain">.xml<</code> <code class="bash plain">/WatchedResource</code> <code class="bash plain">></code> </div> <div class="line number21 index20 alt2"> <code class="bash plain"><!-- Uncomment this to disable session persistence across Tomcat restarts --></code> </div> <div class="line number22 index21 alt1"> <code class="bash plain"><!--</code> </div> <div class="line number23 index22 alt2"> <code class="bash plain"><Manager pathname=</code> <code class="bash string">""</code>  <code class="bash plain">/></code> </div> <div class="line number24 index23 alt1"> <code class="bash spaces">    </code> <code class="bash plain">--></code> </div> <div class="line number25 index24 alt2"> <code class="bash plain"><!-- Uncomment this to </code> <code class="bash functions">enable</code>  <code class="bash plain">Comet connection tacking (provides events</code> </div> <div class="line number26 index25 alt1"> <code class="bash plain">on session expiration as well as webapp lifecycle) --></code> </div> <div class="line number27 index26 alt2"> <code class="bash plain"><!--</code> </div> <div class="line number28 index27 alt1"> <code class="bash plain"><Valve className=</code> <code class="bash string">"org.apache.catalina.valves.CometConnectionManagerValve"</code>  <code class="bash plain">/></code> </div> <div class="line number29 index28 alt2"> <code class="bash spaces">    </code> <code class="bash plain">--></code> </div> <div class="line number30 index29 alt1"> <code class="bash plain"><Valve className=</code> <code class="bash string">"com.orangefunction.tomcat.redissessions.RedisSessionHandlerValve"</code>  <code class="bash plain">/></code> </div> <div class="line number31 index30 alt2"> <code class="bash plain"><Manager className=</code> <code class="bash string">"com.orangefunction.tomcat.redissessions.RedisSessionManager"</code> </div> <div class="line number32 index31 alt1"> <code class="bash plain">host=</code> <code class="bash string">"192.168.31.106"</code> </div> <div class="line number33 index32 alt2"> <code class="bash plain">password=</code> <code class="bash string">"pwd@123"</code> </div> <div class="line number34 index33 alt1"> <code class="bash plain">port=</code> <code class="bash string">"6379"</code> </div> <div class="line number35 index34 alt2"> <code class="bash plain">database=</code> <code class="bash string">"0"</code> </div> <div class="line number36 index35 alt1"> <code class="bash plain">maxInactiveInterval=</code> <code class="bash string">"60"</code>  <code class="bash plain">/></code> </div> <div class="line number37 index36 alt2"> <code class="bash plain"><</code> <code class="bash plain">/Context</code> <code class="bash plain">></code> </div> </div> </td> </tr> </tbody> </table> </div> </div> <p class="无间隔"><strong>重启tomcat服务</strong></p> <p class="无间隔"><strong>说明：</strong></p> <div> <div id="highlighter_386979" class="syntaxhighlighter bash"> <table border="0"> <tbody> <tr> <td class="gutter"> <div class="line number1 index0 alt2"> 1 </div> <div class="line number2 index1 alt1"> 2 </div> <div class="line number3 index2 alt2"> 3 </div> <div class="line number4 index3 alt1"> 4 </div> <div class="line number5 index4 alt2"> 5 </div> <div class="line number6 index5 alt1"> 6 </div> <div class="line number7 index6 alt2"> 7 </div> <div class="line number8 index7 alt1"> 8 </div> <div class="line number9 index8 alt2"> 9 </div> <div class="line number10 index9 alt1"> 10 </div> <div class="line number11 index10 alt2"> 11 </div> <div class="line number12 index11 alt1"> 12 </div> <div class="line number13 index12 alt2"> 13 </div> <div class="line number14 index13 alt1"> 14 </div> </td> <td class="code"> <div> <div class="line number1 index0 alt2"> <code class="bash plain">maxInactiveInterval=</code> <code class="bash string">"60"</code> <code class="bash plain">：session的失效时间</code> </div> <div class="line number2 index1 alt1"> <code class="bash plain">[root@tomcat-1 ~]</code> <code class="bash comments"># shutdown.sh </code> </div> <div class="line number3 index2 alt2"> <code class="bash plain">Using CATALINA_BASE:   </code> <code class="bash plain">/usr/local/tomcat7</code> </div> <div class="line number4 index3 alt1"> <code class="bash plain">Using CATALINA_HOME:   </code> <code class="bash plain">/usr/local/tomcat7</code> </div> <div class="line number5 index4 alt2"> <code class="bash plain">Using CATALINA_TMPDIR: </code> <code class="bash plain">/usr/local/tomcat7/temp</code> </div> <div class="line number6 index5 alt1"> <code class="bash plain">Using JRE_HOME:        </code> <code class="bash plain">/usr/local/java</code> </div> <div class="line number7 index6 alt2"> <code class="bash plain">Using CLASSPATH:       </code> <code class="bash plain">/usr/local/tomcat7/bin/bootstrap</code> <code class="bash plain">.jar:</code> <code class="bash plain">/usr/local/tomcat7/bin/tomcat-juli</code> <code class="bash plain">.jar</code> </div> <div class="line number8 index7 alt1"> <code class="bash plain">[root@tomcat-1 ~]</code> <code class="bash comments"># startup.sh </code> </div> <div class="line number9 index8 alt2"> <code class="bash plain">Using CATALINA_BASE:   </code> <code class="bash plain">/usr/local/tomcat7</code> </div> <div class="line number10 index9 alt1"> <code class="bash plain">Using CATALINA_HOME:   </code> <code class="bash plain">/usr/local/tomcat7</code> </div> <div class="line number11 index10 alt2"> <code class="bash plain">Using CATALINA_TMPDIR: </code> <code class="bash plain">/usr/local/tomcat7/temp</code> </div> <div class="line number12 index11 alt1"> <code class="bash plain">Using JRE_HOME:        </code> <code class="bash plain">/usr/local/java</code> </div> <div class="line number13 index12 alt2"> <code class="bash plain">Using CLASSPATH:       </code> <code class="bash plain">/usr/local/tomcat7/bin/bootstrap</code> <code class="bash plain">.jar:</code> <code class="bash plain">/usr/local/tomcat7/bin/tomcat-juli</code> <code class="bash plain">.jar</code> </div> <div class="line number14 index13 alt1"> <code class="bash plain">Tomcat started.</code> </div> </div> </td> </tr> </tbody> </table> </div> </div> <p class="无间隔"><strong>tomcat-2执行和tomcat-1相同的操作</strong></p> <p class="无间隔"><strong>通过浏览器访问http://192.168.31.141/index.jsp测试页</strong></p> <p class="无间隔"><a href="http://img.e-com-net.com/image/info8/052a47cb238f4f37a67ed6535e9bccf7.jpg" target="_blank"><img title="OKLX%HF4B]9X{]{3%(7]4S8.png" src="http://img.e-com-net.com/image/info8/052a47cb238f4f37a67ed6535e9bccf7.jpg" alt="redis缓存服务器(Nginx+Tomcat+redis+MySQL实现session会话共享)_第7张图片" width="500" height="198" style="border:1px solid black;"></a></p> <p class="无间隔"><strong>刷新页面</strong></p> <p class="无间隔"><a href="http://img.e-com-net.com/image/info8/dabfd7f841444211b067f18d1c6ca64b.jpg" target="_blank"><img title="}JLU]RKBB3WPX9`H~XZF})J.png " src="http://img.e-com-net.com/image/info8/dabfd7f841444211b067f18d1c6ca64b.jpg" alt="redis缓存服务器(Nginx+Tomcat+redis+MySQL实现session会话共享)_第8张图片" width="500" height="200" style="border:1px solid black;"></a></p> <p class="无间隔"><strong>可以看出，分别访问了不同的tomcat，但是得到的session却是相同的，说明达到了集群的目的。</strong></p> <p class="无间隔"><strong>注：从Tomcat6开始默认开启了Session持久化设置，测试时可以关闭本地Session持久化，其实也很简单，在Tomcat的conf目录下的context.xml文件中，取消注释下面那段配置即可：</strong></p> <p class="无间隔"><strong>修改前：</strong></p> <div> <div id="highlighter_830009" class="syntaxhighlighter bash"> <table border="0"> <tbody> <tr> <td class="gutter"> <div class="line number1 index0 alt2"> 1 </div> <div class="line number2 index1 alt1"> 2 </div> <div class="line number3 index2 alt2"> 3 </div> <div class="line number4 index3 alt1"> 4 </div> </td> <td class="code"> <div> <div class="line number1 index0 alt2"> <code class="bash plain"><!-- Uncomment this to disable session persistence across Tomcat restarts --></code> </div> <div class="line number2 index1 alt1"> <code class="bash plain"><!--</code> </div> <div class="line number3 index2 alt2"> <code class="bash plain"><Manager pathname=</code> <code class="bash string">""</code>  <code class="bash plain">/></code> </div> <div class="line number4 index3 alt1"> <code class="bash plain">--></code> </div> </div> </td> </tr> </tbody> </table> </div> </div> <p class="无间隔"><strong>修改后：</strong></p> <div> <div id="highlighter_876942" class="syntaxhighlighter bash"> <table border="0"> <tbody> <tr> <td class="gutter"> <div class="line number1 index0 alt2"> 1 </div> <div class="line number2 index1 alt1"> 2 </div> </td> <td class="code"> <div> <div class="line number1 index0 alt2"> <code class="bash plain"><!-- Uncomment this to disable session persistence across Tomcat restarts --></code> </div> <div class="line number2 index1 alt1"> <code class="bash plain"><Manager pathname=</code> <code class="bash string">""</code>  <code class="bash plain">/></code> </div> </div> </td> </tr> </tbody> </table> </div> </div> <p class="无间隔"><strong>重启tomcat服务</strong></p> <p class="正文"><strong>查看redis:</strong></p> <div> <div id="highlighter_701861" class="syntaxhighlighter bash"> <table border="0"> <tbody> <tr> <td class="gutter"> <div class="line number1 index0 alt2"> 1 </div> <div class="line number2 index1 alt1"> 2 </div> <div class="line number3 index2 alt2"> 3 </div> <div class="line number4 index3 alt1"> 4 </div> <div class="line number5 index4 alt2"> 5 </div> <div class="line number6 index5 alt1"> 6 </div> </td> <td class="code"> <div> <div class="line number1 index0 alt2"> <code class="bash plain">[root@redis ~]</code> <code class="bash comments"># redis-cli -h 192.168.31.106 -p 6379 -a pwd@123</code> </div> <div class="line number2 index1 alt1"> <code class="bash plain">192.168.31.106:6379> keys *</code> </div> <div class="line number3 index2 alt2"> <code class="bash plain">1) </code> <code class="bash string">"6C3F950BE6413AD2E0EF00F930881224.tomcat-1.tomcat-1"</code> </div> <div class="line number4 index3 alt1"> <code class="bash plain">2) </code> <code class="bash string">"name"</code> </div> <div class="line number5 index4 alt2"> <code class="bash plain">3) </code> <code class="bash string">"7A6D5D4C5B1EA52C4E9EED1C5523FEB5.tomcat-2.tomcat-2"</code> </div> <div class="line number6 index5 alt1"> <code class="bash plain">4) </code> <code class="bash string">"32C35EEA064884F065E93CB00C690662.tomcat-1.tomcat-1"</code> </div> </div> </td> </tr> </tbody> </table> </div> </div> <p class="正文"><strong>7、tomcat连接数据库</strong></p> <p class="正文"><strong>192.168.31.225作为mysql数据库服务器</strong></p> <div> <div id="highlighter_78607" class="syntaxhighlighter bash"> <table border="0"> <tbody> <tr> <td class="gutter"> <div class="line number1 index0 alt2"> 1 </div> <div class="line number2 index1 alt1"> 2 </div> <div class="line number3 index2 alt2"> 3 </div> <div class="line number4 index3 alt1"> 4 </div> <div class="line number5 index4 alt2"> 5 </div> <div class="line number6 index5 alt1"> 6 </div> <div class="line number7 index6 alt2"> 7 </div> <div class="line number8 index7 alt1"> 8 </div> <div class="line number9 index8 alt2"> 9 </div> <div class="line number10 index9 alt1"> 10 </div> <div class="line number11 index10 alt2"> 11 </div> <div class="line number12 index11 alt1"> 12 </div> </td> <td class="code"> <div> <div class="line number1 index0 alt2"> <code class="bash plain">[root@db ~]</code> <code class="bash comments"># mysql -uroot -p123.abc</code> </div> <div class="line number2 index1 alt1"> <code class="bash plain">mysql> grant all on *.* to javauser@</code> <code class="bash string">'192.168.31.%'</code>  <code class="bash plain">identified by </code> <code class="bash string">'javapasswd'</code> <code class="bash plain">;</code> </div> <div class="line number3 index2 alt2"> <code class="bash plain">Query OK, 0 rows affected, 1 warning (0.02 sec)</code> </div> <div class="line number4 index3 alt1"> <code class="bash spaces"> </code>  </div> <div class="line number5 index4 alt2"> <code class="bash plain">mysql> create database javatest;</code> </div> <div class="line number6 index5 alt1"> <code class="bash plain">Query OK, 1 row affected (0.01 sec)</code> </div> <div class="line number7 index6 alt2"> <code class="bash spaces"> </code>  </div> <div class="line number8 index7 alt1"> <code class="bash plain">mysql> use javatest;</code> </div> <div class="line number9 index8 alt2"> <code class="bash plain">Database changed</code> </div> <div class="line number10 index9 alt1"> <code class="bash spaces"> </code>  </div> <div class="line number11 index10 alt2"> <code class="bash plain">mysql> create table testdata(</code> <code class="bash functions">id</code>  <code class="bash plain">int not null auto_increment primary key,foo varchar(25),bar int);</code> </div> <div class="line number12 index11 alt1"> <code class="bash plain">Query OK, 0 rows affected (0.02 sec)</code> </div> </div> </td> </tr> </tbody> </table> </div> </div> <p class="正文"><strong>插入些数据</strong></p> <div> <div id="highlighter_559318" class="syntaxhighlighter bash"> <table border="0"> <tbody> <tr> <td class="gutter"> <div class="line number1 index0 alt2"> 1 </div> <div class="line number2 index1 alt1"> 2 </div> <div class="line number3 index2 alt2"> 3 </div> <div class="line number4 index3 alt1"> 4 </div> <div class="line number5 index4 alt2"> 5 </div> <div class="line number6 index5 alt1"> 6 </div> <div class="line number7 index6 alt2"> 7 </div> <div class="line number8 index7 alt1"> 8 </div> <div class="line number9 index8 alt2"> 9 </div> <div class="line number10 index9 alt1"> 10 </div> <div class="line number11 index10 alt2"> 11 </div> </td> <td class="code"> <div> <div class="line number1 index0 alt2"> <code class="bash plain">mysql> insert into testdata(foo,bar) values (</code> <code class="bash string">'hello'</code> <code class="bash plain">,</code> <code class="bash string">'123456'</code> <code class="bash plain">),(</code> <code class="bash string">'ok'</code> <code class="bash plain">,</code> <code class="bash string">'654321'</code> <code class="bash plain">);</code> </div> <div class="line number2 index1 alt1"> <code class="bash plain">Query OK, 2 rows affected (0.04 sec)</code> </div> <div class="line number3 index2 alt2"> <code class="bash plain">Records: 2  Duplicates: 0  Warnings: 0</code> </div> <div class="line number4 index3 alt1"> <code class="bash plain">mysql> </code> <code class="bash functions">select</code>  <code class="bash plain">* from testdata;</code> </div> <div class="line number5 index4 alt2"> <code class="bash plain">+----+-------+--------+</code> </div> <div class="line number6 index5 alt1"> <code class="bash plain">| </code> <code class="bash functions">id</code>  <code class="bash plain">| foo   | bar    |</code> </div> <div class="line number7 index6 alt2"> <code class="bash plain">+----+-------+--------+</code> </div> <div class="line number8 index7 alt1"> <code class="bash plain">|  1 | hello | 123456 |</code> </div> <div class="line number9 index8 alt2"> <code class="bash plain">|  2 | ok    | 654321 |</code> </div> <div class="line number10 index9 alt1"> <code class="bash plain">+----+-------+--------+</code> </div> <div class="line number11 index10 alt2"> <code class="bash plain">2 rows </code> <code class="bash keyword">in</code>  <code class="bash functions">set</code>  <code class="bash plain">(0.00 sec)</code> </div> </div> </td> </tr> </tbody> </table> </div> </div> <p class="正文"><strong>mysql防火墙配置</strong></p> <p class="正文"><strong>配置tomcat服务器连接mysql数据库</strong></p> <p class="无间隔"><strong>下载mysql-connector-java-5.1.22-bin.jar并复制到$CATALINA_HOME/lib目录下</strong></p> <div> <div id="highlighter_880389" class="syntaxhighlighter bash"> <table border="0"> <tbody> <tr> <td class="gutter"> <div class="line number1 index0 alt2"> 1 </div> <div class="line number2 index1 alt1"> 2 </div> <div class="line number3 index2 alt2"> 3 </div> <div class="line number4 index3 alt1"> 4 </div> <div class="line number5 index4 alt2"> 5 </div> <div class="line number6 index5 alt1"> 6 </div> <div class="line number7 index6 alt2"> 7 </div> <div class="line number8 index7 alt1"> 8 </div> <div class="line number9 index8 alt2"> 9 </div> <div class="line number10 index9 alt1"> 10 </div> <div class="line number11 index10 alt2"> 11 </div> <div class="line number12 index11 alt1"> 12 </div> <div class="line number13 index12 alt2"> 13 </div> </td> <td class="code"> <div> <div class="line number1 index0 alt2"> <code class="bash plain">[root@tomcat-1 ~]</code> <code class="bash comments"># cp mysql-connector-java-5.1.22-bin.jar /usr/local/tomcat7/lib/</code> </div> <div class="line number2 index1 alt1"> <code class="bash plain">[root@tomcat-1 ~]</code> <code class="bash comments"># ls /usr/local/tomcat7/lib/mysql-connector-java-5.1.22-bin.jar </code> </div> <div class="line number3 index2 alt2"> <code class="bash plain">/usr/local/tomcat7/lib/mysql-connector-java-5</code> <code class="bash plain">.1.22-bin.jar</code> </div> <div class="line number4 index3 alt1"> <code class="bash spaces"> </code>  </div> <div class="line number5 index4 alt2"> <code class="bash plain">context configuration</code> </div> <div class="line number6 index5 alt1"> <code class="bash plain">configure the JNDI datasource </code> <code class="bash keyword">in</code>  <code class="bash plain">tomcat by adding a declaration </code> <code class="bash keyword">for</code>  <code class="bash plain">your resource to your</code> </div> <div class="line number7 index6 alt2"> <code class="bash plain">context</code> </div> <div class="line number8 index7 alt1"> <code class="bash plain">[root@tomcat-1 ~]</code> <code class="bash comments"># vi /usr/local/tomcat7/conf/context.xml</code> </div> <div class="line number9 index8 alt2"> <code class="bash plain">在<Context>中添加如下内容：</code> </div> <div class="line number10 index9 alt1"> <code class="bash plain"><Resource name=</code> <code class="bash string">"jdbc/TestDB"</code>  <code class="bash plain">auth=</code> <code class="bash string">"Container"</code>  <code class="bash functions">type</code> <code class="bash plain">=</code> <code class="bash string">"javax.sql.DataSource"</code> </div> <div class="line number11 index10 alt2"> <code class="bash plain">maxActive=</code> <code class="bash string">"100"</code>  <code class="bash plain">maxIdle=</code> <code class="bash string">"30"</code>  <code class="bash plain">maxWait=</code> <code class="bash string">"10000"</code> </div> <div class="line number12 index11 alt1"> <code class="bash plain">username=</code> <code class="bash string">"javauser"</code>  <code class="bash plain">password=</code> <code class="bash string">"javapass"</code>  <code class="bash plain">driverClassName=</code> <code class="bash string">"com.mysql.jdbc.Driver"</code> </div> <div class="line number13 index12 alt2"> <code class="bash plain">url=</code> <code class="bash string">"jdbc:mysql://192.168.31.225:3306/javatest"</code> <code class="bash plain">/></code> </div> </div> </td> </tr> </tbody> </table> </div> </div> <p class="正文"><strong>保存修改并退出</strong></p> <div> <div id="highlighter_778040" class="syntaxhighlighter bash"> <table border="0"> <tbody> <tr> <td class="gutter"> <div class="line number1 index0 alt2"> 1 </div> <div class="line number2 index1 alt1"> 2 </div> <div class="line number3 index2 alt2"> 3 </div> </td> <td class="code"> <div> <div class="line number1 index0 alt2"> <code class="bash plain">web.xml configuration</code> </div> <div class="line number2 index1 alt1"> <code class="bash plain">[root@tomcat-1 ~]</code> <code class="bash comments"># mkdir /web/webapp1/WEB-INF</code> </div> <div class="line number3 index2 alt2"> <code class="bash plain">[root@tomcat-1 ~]</code> <code class="bash comments"># vi /web/webapp1/WEB-INF/web.xml</code> </div> </div> </td> </tr> </tbody> </table> </div> </div> <p class="正文"><strong>添加内容如下：</strong></p> <div> <div id="highlighter_612654" class="syntaxhighlighter bash"> <table border="0"> <tbody> <tr> <td class="gutter"> <div class="line number1 index0 alt2"> 1 </div> <div class="line number2 index1 alt1"> 2 </div> <div class="line number3 index2 alt2"> 3 </div> <div class="line number4 index3 alt1"> 4 </div> <div class="line number5 index4 alt2"> 5 </div> <div class="line number6 index5 alt1"> 6 </div> <div class="line number7 index6 alt2"> 7 </div> <div class="line number8 index7 alt1"> 8 </div> <div class="line number9 index8 alt2"> 9 </div> <div class="line number10 index9 alt1"> 10 </div> <div class="line number11 index10 alt2"> 11 </div> <div class="line number12 index11 alt1"> 12 </div> <div class="line number13 index12 alt2"> 13 </div> </td> <td class="code"> <div> <div class="line number1 index0 alt2"> <code class="bash plain"><web-app xmlns=</code> <code class="bash string">"http://java.sun.com/xml/ns/j2ee"</code> </div> <div class="line number2 index1 alt1"> <code class="bash plain">xmlns:xsi=</code> <code class="bash string">"http://www.w3.org/2001/XMLSchema-instance"</code> </div> <div class="line number3 index2 alt2"> <code class="bash plain">xsi:schemaLocation="http:</code> <code class="bash plain">//java</code> <code class="bash plain">.sun.com</code> <code class="bash plain">/xml/ns/j2ee</code> </div> <div class="line number4 index3 alt1"> <code class="bash plain">http:</code> <code class="bash plain">//java</code> <code class="bash plain">.sun.com</code> <code class="bash plain">/xml/ns/j2ee/web-app_2_4</code> <code class="bash plain">.xsd"</code> </div> <div class="line number5 index4 alt2"> <code class="bash plain">version=</code> <code class="bash string">"2.4"</code> <code class="bash plain">></code> </div> <div class="line number6 index5 alt1"> <code class="bash plain"><description>MySQL Test App<</code> <code class="bash plain">/description</code> <code class="bash plain">></code> </div> <div class="line number7 index6 alt2"> <code class="bash plain"><resource-ref></code> </div> <div class="line number8 index7 alt1"> <code class="bash plain"><description>DB Connection<</code> <code class="bash plain">/description</code> <code class="bash plain">></code> </div> <div class="line number9 index8 alt2"> <code class="bash plain"><res-ref-name>jdbc</code> <code class="bash plain">/TestDB</code> <code class="bash plain"><</code> <code class="bash plain">/res-ref-name</code> <code class="bash plain">></code> </div> <div class="line number10 index9 alt1"> <code class="bash plain"><res-</code> <code class="bash functions">type</code> <code class="bash plain">>javax.sql.DataSource<</code> <code class="bash plain">/res-type</code> <code class="bash plain">></code> </div> <div class="line number11 index10 alt2"> <code class="bash plain"><res-auth>Container<</code> <code class="bash plain">/res-auth</code> <code class="bash plain">></code> </div> <div class="line number12 index11 alt1"> <code class="bash plain"><</code> <code class="bash plain">/resource-ref</code> <code class="bash plain">></code> </div> <div class="line number13 index12 alt2"> <code class="bash plain"><</code> <code class="bash plain">/web-app</code> <code class="bash plain">></code> </div> </div> </td> </tr> </tbody> </table> </div> </div> <p class="正文"><strong>保存修改并退出，重启tomcat服务</strong></p> <div> <div id="highlighter_306107" class="syntaxhighlighter bash"> <table border="0"> <tbody> <tr> <td class="gutter"> <div class="line number1 index0 alt2"> 1 </div> <div class="line number2 index1 alt1"> 2 </div> <div class="line number3 index2 alt2"> 3 </div> <div class="line number4 index3 alt1"> 4 </div> <div class="line number5 index4 alt2"> 5 </div> <div class="line number6 index5 alt1"> 6 </div> <div class="line number7 index6 alt2"> 7 </div> <div class="line number8 index7 alt1"> 8 </div> <div class="line number9 index8 alt2"> 9 </div> <div class="line number10 index9 alt1"> 10 </div> <div class="line number11 index10 alt2"> 11 </div> <div class="line number12 index11 alt1"> 12 </div> <div class="line number13 index12 alt2"> 13 </div> <div class="line number14 index13 alt1"> 14 </div> <div class="line number15 index14 alt2"> 15 </div> <div class="line number16 index15 alt1"> 16 </div> <div class="line number17 index16 alt2"> 17 </div> <div class="line number18 index17 alt1"> 18 </div> <div class="line number19 index18 alt2"> 19 </div> <div class="line number20 index19 alt1"> 20 </div> <div class="line number21 index20 alt2"> 21 </div> <div class="line number22 index21 alt1"> 22 </div> <div class="line number23 index22 alt2"> 23 </div> <div class="line number24 index23 alt1"> 24 </div> <div class="line number25 index24 alt2"> 25 </div> <div class="line number26 index25 alt1"> 26 </div> <div class="line number27 index26 alt2"> 27 </div> <div class="line number28 index27 alt1"> 28 </div> <div class="line number29 index28 alt2"> 29 </div> <div class="line number30 index29 alt1"> 30 </div> <div class="line number31 index30 alt2"> 31 </div> <div class="line number32 index31 alt1"> 32 </div> <div class="line number33 index32 alt2"> 33 </div> <div class="line number34 index33 alt1"> 34 </div> <div class="line number35 index34 alt2"> 35 </div> <div class="line number36 index35 alt1"> 36 </div> <div class="line number37 index36 alt2"> 37 </div> <div class="line number38 index37 alt1"> 38 </div> <div class="line number39 index38 alt2"> 39 </div> <div class="line number40 index39 alt1"> 40 </div> <div class="line number41 index40 alt2"> 41 </div> <div class="line number42 index41 alt1"> 42 </div> </td> <td class="code"> <div> <div class="line number1 index0 alt2"> <code class="bash plain">[root@tomcat-1 ~]</code> <code class="bash comments"># shutdown.sh </code> </div> <div class="line number2 index1 alt1"> <code class="bash plain">Using CATALINA_BASE:   </code> <code class="bash plain">/usr/local/tomcat7</code> </div> <div class="line number3 index2 alt2"> <code class="bash plain">Using CATALINA_HOME:   </code> <code class="bash plain">/usr/local/tomcat7</code> </div> <div class="line number4 index3 alt1"> <code class="bash plain">Using CATALINA_TMPDIR: </code> <code class="bash plain">/usr/local/tomcat7/temp</code> </div> <div class="line number5 index4 alt2"> <code class="bash plain">Using JRE_HOME:        </code> <code class="bash plain">/usr/local/java</code> </div> <div class="line number6 index5 alt1"> <code class="bash plain">Using CLASSPATH:       </code> <code class="bash plain">/usr/local/tomcat7/bin/bootstrap</code> <code class="bash plain">.jar:</code> <code class="bash plain">/usr/local/tomcat7/bin/tomcat-juli</code> <code class="bash plain">.jar</code> </div> <div class="line number7 index6 alt2"> <code class="bash plain">[root@tomcat-1 ~]</code> <code class="bash comments"># startup.sh </code> </div> <div class="line number8 index7 alt1"> <code class="bash plain">Using CATALINA_BASE:   </code> <code class="bash plain">/usr/local/tomcat7</code> </div> <div class="line number9 index8 alt2"> <code class="bash plain">Using CATALINA_HOME:   </code> <code class="bash plain">/usr/local/tomcat7</code> </div> <div class="line number10 index9 alt1"> <code class="bash plain">Using CATALINA_TMPDIR: </code> <code class="bash plain">/usr/local/tomcat7/temp</code> </div> <div class="line number11 index10 alt2"> <code class="bash plain">Using JRE_HOME:        </code> <code class="bash plain">/usr/local/java</code> </div> <div class="line number12 index11 alt1"> <code class="bash plain">Using CLASSPATH:       </code> <code class="bash plain">/usr/local/tomcat7/bin/bootstrap</code> <code class="bash plain">.jar:</code> <code class="bash plain">/usr/local/tomcat7/bin/tomcat-juli</code> <code class="bash plain">.jar</code> </div> <div class="line number13 index12 alt2"> <code class="bash plain">Tomcat started.</code> </div> <div class="line number14 index13 alt1"> <code class="bash plain">tomcat-2进行和tomcat-1相同的操用</code> </div> <div class="line number15 index14 alt2"> <code class="bash plain">Test code</code> </div> <div class="line number16 index15 alt1"> <code class="bash plain">Now create a simple </code> <code class="bash functions">test</code> <code class="bash plain">.jsp page,内容如下：</code> </div> <div class="line number17 index16 alt2"> <code class="bash plain">[root@tomcat-2 ~]</code> <code class="bash comments"># vi /web/webapp1/test.jsp</code> </div> <div class="line number18 index17 alt1"> <code class="bash plain">[root@tomcat-2 webapp1]</code> <code class="bash comments"># cattest.jsp</code> </div> <div class="line number19 index18 alt2"> <code class="bash plain"><%@ page language=</code> <code class="bash string">"java"</code>  <code class="bash functions">import</code> <code class="bash plain">=</code> <code class="bash string">"java.sql.*"</code>  <code class="bash plain">pageEncoding=</code> <code class="bash string">"GB2312"</code> <code class="bash plain">%></code> </div> <div class="line number20 index19 alt1"> <code class="bash plain"><html></code> </div> <div class="line number21 index20 alt2"> <code class="bash plain"><</code> <code class="bash functions">head</code> <code class="bash plain">></code> </div> <div class="line number22 index21 alt1"> <code class="bash plain"><title>MySQL<</code> <code class="bash plain">/title</code> <code class="bash plain">></code> </div> <div class="line number23 index22 alt2"> <code class="bash plain"><</code> <code class="bash plain">/head</code> <code class="bash plain">></code> </div> <div class="line number24 index23 alt1"> <code class="bash plain"><body></code> </div> <div class="line number25 index24 alt2"> <code class="bash plain">connect MySQL<br></code> </div> <div class="line number26 index25 alt1"> <code class="bash plain"><%</code> </div> <div class="line number27 index26 alt2"> <code class="bash plain">String driverClass=</code> <code class="bash string">"com.mysql.jdbc.Driver"</code> <code class="bash plain">;</code> </div> <div class="line number28 index27 alt1"> <code class="bash plain">String url=</code> <code class="bash string">"jdbc:mysql://192.168.31.225:3306/javatest"</code> <code class="bash plain">;</code> </div> <div class="line number29 index28 alt2"> <code class="bash plain">String username = </code> <code class="bash string">"javauser"</code> <code class="bash plain">; </code> </div> <div class="line number30 index29 alt1"> <code class="bash plain">String password = </code> <code class="bash string">"javapasswd"</code> <code class="bash plain">; </code> </div> <div class="line number31 index30 alt2"> <code class="bash plain">Class.forName(driverClass); </code> </div> <div class="line number32 index31 alt1"> <code class="bash plain">Connection conn=DriverManager.getConnection(url, username, password); </code> </div> <div class="line number33 index32 alt2"> <code class="bash plain">Statement stmt=conn.createStatement();</code> </div> <div class="line number34 index33 alt1"> <code class="bash plain">ResultSetrs = stmt.executeQuery(</code> <code class="bash string">"select * from testdata"</code> <code class="bash plain">); </code> </div> <div class="line number35 index34 alt2"> <code class="bash keyword">while</code> <code class="bash plain">(rs.next()){</code> </div> <div class="line number36 index35 alt1"> <code class="bash plain">out.println(</code> <code class="bash string">"<br>foo:"</code> <code class="bash plain">+rs.getString(2)+</code> <code class="bash string">"bar:"</code> <code class="bash plain">+rs.getString(3));</code> </div> <div class="line number37 index36 alt2"> <code class="bash plain">}</code> </div> <div class="line number38 index37 alt1"> <code class="bash plain">rs.close();</code> </div> <div class="line number39 index38 alt2"> <code class="bash plain">stmt.close();</code> </div> <div class="line number40 index39 alt1"> <code class="bash plain">conn.close();</code> </div> <div class="line number41 index40 alt2"> <code class="bash plain">%></code> </div> <div class="line number42 index41 alt1"> <code class="bash plain"><</code> <code class="bash plain">/body</code> <code class="bash plain">><</code> <code class="bash plain">/html</code> <code class="bash plain">></code> </div> </div> </td> </tr> </tbody> </table> </div> </div> <p class="正文"><strong>通过浏览器访问http://192.168.31.141/test.jsp测试页</strong></p> <p class="正文"><a href="http://img.e-com-net.com/image/info8/885f8091ed0b406eac70d3f5c9ab6617.png" target="_blank"><img title="JB1MOI~CDV_BDGPVNLB[M33.png" src="http://img.e-com-net.com/image/info8/885f8091ed0b406eac70d3f5c9ab6617.png" alt="redis缓存服务器(Nginx+Tomcat+redis+MySQL实现session会话共享)_第9张图片" width="316" height="148" style="border:1px solid black;"></a></p> <p class="无间隔"><strong>注：</strong></p> <p class="无间隔"><strong>以上配置可以参考tomcat docs</strong></p> <p class="无间隔"><a href="http://img.e-com-net.com/image/info8/61d187e5a05d46c8b8cedee91f394ff8.jpg" target="_blank"><img title="2OE1JD2QDIWMAMVTZ33T1YE.jpg" src="http://img.e-com-net.com/image/info8/61d187e5a05d46c8b8cedee91f394ff8.jpg" alt="redis缓存服务器(Nginx+Tomcat+redis+MySQL实现session会话共享)_第10张图片" width="490" height="222" style="border:1px solid black;"></a></p> <p class="无间隔"><a href="http://img.e-com-net.com/image/info8/b880c646ba044e519fe8786291a72057.jpg" target="_blank"><img title="04T}T71U9R`{S2VFE%HWI28.png " src="http://img.e-com-net.com/image/info8/b880c646ba044e519fe8786291a72057.jpg" alt="redis缓存服务器(Nginx+Tomcat+redis+MySQL实现session会话共享)_第11张图片" width="500" height="194" style="border:1px solid black;"></a></p> <p class="无间隔"><a href="http://img.e-com-net.com/image/info8/c9239bec764b4e17a976be23ce1cc7c4.jpg" target="_blank"><img title="FJAKY`0%[)X(F)AEY91M6NU.png " src="http://img.e-com-net.com/image/info8/c9239bec764b4e17a976be23ce1cc7c4.jpg" alt="redis缓存服务器(Nginx+Tomcat+redis+MySQL实现session会话共享)_第12张图片" width="500" height="215" style="border:1px solid black;"></a></p> </div> <p>转载于:https://www.cnblogs.com/Easonlou/p/6627092.html</p> </div> </div> </div> </div> </div> <!--PC和WAP自适应版--> <div id="SOHUCS" sid="1294641997918838784"></div> <script type="text/javascript" src="/views/front/js/chanyan.js"></script> <!-- 文章页-底部 动态广告位 --> <div class="youdao-fixed-ad" id="detail_ad_bottom"></div> </div> <div class="col-md-3"> <div class="row" id="ad"> <!-- 文章页-右侧1 动态广告位 --> <div id="right-1" class="col-lg-12 col-md-12 col-sm-4 col-xs-4 ad"> <div class="youdao-fixed-ad" id="detail_ad_1"> </div> </div> <!-- 文章页-右侧2 动态广告位 --> <div id="right-2" class="col-lg-12 col-md-12 col-sm-4 col-xs-4 ad"> <div class="youdao-fixed-ad" id="detail_ad_2"></div> </div> <!-- 文章页-右侧3 动态广告位 --> <div id="right-3" class="col-lg-12 col-md-12 col-sm-4 col-xs-4 ad"> <div 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