tomcat+redis实现session共享配置之路 支持Tomcat 8

1、网上查找资料，大部分从下面网址下载java代码，因是几年前实现的（大概2,3年前吧），不支持tomcat8 
https://github.com/jcoleman/tomcat-redis-session-manager

2、在myeclipse 新建一个maven项目【maven-archetype-quickstart】 
源文件新建包名com.orangefunction.tomcat.redissessions 
讲下载下来的java类拷贝到该包之下（这些java类只实现tomcat7，实现tomcat8需要做一些修改） 
JavaSerializer.java 
RedisSession.java 
RedisSessionHandlerValve.java 
RedisSessionManager.java 
Serializer.java 
SessionSerializationMetadata.java

3、tomcat8与tomcat7 有些实现代码不一样，需各自新建一个maven项目要各自打包，注意tomcat引得版本与jdk要保持一致 

====tomcat8 maven pom.xml====

<dependencies>
    <dependency>
        <groupId>org.apache.tomcatgroupId>
        <artifactId>tomcat-catalinaartifactId>
        <version>8.0.33version>
    dependency>
      <dependency>
        <groupId>redis.clientsgroupId>
        <artifactId>jedisartifactId>
        <version>2.7.2version>
    dependency>
  dependencies>

  <build>
    <plugins>
        <plugin> 
            <groupId>org.apache.maven.pluginsgroupId>
            <artifactId>maven-compiler-pluginartifactId>
            <version>3.0version>
            <configuration>
                
                <source>1.8source>
                
                <target>1.8target>
                
                <encoding>UTF-8encoding>
            configuration>
        plugin>
    plugins>
  build>

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====tomcat7 maven pom.xml====

<dependencies>
  
      <dependency>
        <groupId>org.apache.tomcatgroupId>
        <artifactId>tomcat-catalinaartifactId>
        <version>7.0.27version>
    dependency>
      <dependency>
        <groupId>redis.clientsgroupId>
        <artifactId>jedisartifactId>
        <version>2.7.2version>
    dependency>

  dependencies>

  <build>
    <plugins>
        <plugin> 
            <groupId>org.apache.maven.pluginsgroupId>
            <artifactId>maven-compiler-pluginartifactId>
            <version>3.0version>
            <configuration>
                
                <source>1.7source>
                
                <target>1.7target>
                
                <encoding>UTF-8encoding>
            configuration>
        plugin>
    plugins>
build>

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将打包出来的tomcat-redis的jar包和 
jedis-2.7.2.jar 
commons-pool2-2.3.jar 
拷贝到tomcat的lib文件夹下面

4、tomcat配置 
====tomcat context.xml====

<Valve className="com.orangefunction.tomcat.redissessions.RedisSessionHandlerValve" />  
<Manager className="com.orangefunction.tomcat.redissessions.RedisSessionManager"  
    host="127.0.0.1"  
    port="6379"  
    database="0"  
    maxInactiveInterval="60" />



<Valve className="com.orangefunction.tomcat.redissessions.RedisSessionHandlerValve" />        
<Manager className="com.orangefunction.tomcat.redissessions.RedisSessionManager" 
    maxInactiveInterval="60"
    sentinelMaster="mymaster"
    sentinels="127.0.0.1:26379,127.0.0.1:26380,127.0.0.1:26381,127.0.0.1:26382" />

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5、需要特别注意的是项目中要存入session的对象必须实现序列化，否知会出现序列化错误

public class Test implements Serializable {
    private static final long serialVersionUID = 5021582410009851677L;
    ......
}

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配置截图：

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参考网址：

redis + Tomcat 8 的session共享解决 
http://www.cnblogs.com/interdrp/p/4868740.html

Tomcat7+Redis存储Session 
http://blog.csdn.net/caiwenfeng_for_23/article/details/45666831

用Redis存储Tomcat集群的Session 
http://blog.csdn.net/chszs/article/details/42610365

分布式集群系统下的高可用session解决方案 
http://tendyming.iteye.com/blog/1815136