Linux下,Tomcat启用APR需要三个组件:
下面用yum安装:
1、查看是否已经安装了apr和apr-util
# rpm -qa apr
apr-1.4.8-3.el7.x86_64
# rpm -qa apr-util
apr-util-1.5.2-6.el7.x86_64
2、查看是否有最新版的apr和apr-util
# yum list | grep apr
apr.x86_64 1.4.8-3.el7 @anaconda
apr-util.x86_64 1.5.2-6.el7 @anaconda
3、如果还没安装,用yum安装:
# yum install apr-devel apr apr-util
4、安装tomcat-native:
搜索tomcat-native安装包:
# yum list | grep tomcat-native
如果已经存在,直接安装:
# yum install tomcat-native
……
正在安装 : tomcat-native-1.1.30-1.el7.x86_64 1/1
验证中 : tomcat-native-1.1.30-1.el7.x86_64 1/1
已安装:
tomcat-native.x86_64 0:1.1.30-1.el7
完毕!
tomcat-native-1.1.30-1.el7.x86_64置相关的全局变量:
# vi /etc/profile
添加:export LD_LIBRARY_PATH=$LD_LIBRARY_PATH:/usr/local/apr/lib
# source /etc/profile
5、重启Tomcat,看看是否可以成功使用APR
如果一切正常:
APR启动:
[main] org.apache.coyote.AbstractProtocol.start Starting ProtocolHandler [“http-apr-18080”]
[main] org.apache.catalina.startup.Catalina.start Server startup in 13617 ms
相比NIO模式的启动,速度快了一些(~15%):
NIO启动:
[main] org.apache.coyote.AbstractProtocol.start Starting ProtocolHandler [“http-nio-18080”]
[main] org.apache.catalina.startup.Catalina.start Server startup in 15671 ms
如果发现异常log,比如:
06-Aug-2015 14:46:04.949 SEVERE [main] org.apache.catalina.core.AprLifecycleListener.init An incompatible version 1.1.30 of the APR based Apache Tomcat Native library is installed, while Tomcat requires version 1.1.32
说明系统自带的tomcat-native版本太低。
删除:
# yum erase tomcat-native
用yum检查有没有最新版:
# yum update tomcat-native
如果yum找不到最新版,则下载或从Tomcat/bin中解压安装。
从Tomcat/bin目录中,解压tomcat-native.tar.gz文件:
# tar -zxvf tomcat-native.tar.gz
得到文件夹:tomcat-native-1.1.33-src
# cd tomcat-native-1.1.33-src/jni/native/
# ./configure --with-apr=/usr/bin/apr-1-config \
--with-java-home=/usr/java/jdk1.8.0_73 \
--with-ssl=yes \
--prefix=$CATALINA_HOME
# make && make install
$CATALINA_HOME为/etc/profile中配置的tomcat环境变量
参考:
官网的安装指导:http://tomcat.apache.org/native-doc/
Tomcat Connector三种运行模式(BIO, NIO, APR)的比较和优化:http://blog.csdn.net/clementad/article/details/47045673