转载：http://blog.csdn.net/grhlove123/article/details/48047735
tomcat7下基于redis的session共享所需jar包：
http://download.csdn.net/detail/xiaoxiaosasasa/9403043
本文记录nginx+Redis+tomcat实现session共享的过程
nginx安装：http://blog.csdn.net/grhlove123/article/details/47834673
redis安装：http://blog.csdn.net/grhlove123/article/details/47783471
准备两个tomcat，修改相应的端口
| 名称 | IP | 端口 | tomcat版本 | JDK |
| tomcat1 | 10.10.49.23 | 8080 | 7.0.40 | 1.7.0_25 |
| tomcat2 | 10.10.49.15 | 8081 | 7.0.40 | 1.7.0_25 |
修改nginx.conf加上：
- upstream backend {
- server 10.10.49.23:8080 max_fails=1 fail_timeout=10s;
- server 10.10.49.15:8081 max_fails=1 fail_timeout=10s;
- }
修改nginx.conf的location成
- location / {
- root html;
- index index.html index.htm;
- proxy_pass http://backend;
- }
启动nginx。
下载tomcat-redis-session-manager相应的jar包，主要有三个：
wget https://github.com/downloads/jcoleman/tomcat-redis-session-manager/tomcat-redis-session-manager-1.2-tomcat-7-Java-7.jar
wget http://central.maven.org/maven2/redis/clients/jedis/2.5.2/jedis-2.5.2.jar
wget http://central.maven.org/maven2/org/apache/commons/commons-pool2/2.0/commons-pool2-2.0.jar
下载完成后拷贝到$TOMCAT_HOME/lib中
修改两tomcat的context.xml:
- <Context>
- <!-- Default set of monitored resources -->
- <WatchedResource>WEB-INF/web.xml</WatchedResource>
- <!-- Uncomment this to disable session persistence across Tomcat restarts -->
- <!--
- <Manager pathname="" />
- -->
- <!-- Uncomment this to enable Comet connection tacking (provides events
- on session expiration as well as webapp lifecycle) -->
- <!--
- <Valve className="org.apache.catalina.valves.CometConnectionManagerValve" />
- -->
- <Valve className="com.orangefunction.tomcat.redissessions.RedisSessionHandlerValve" />
- <Manager className="com.orangefunction.tomcat.redissessions.RedisSessionManager"
- host="10.10.49.20"
- port="6379"
- database="0"
- maxInactiveInterval="60" />
- </Context>
在tomcat/webapps/test放一个index.jsp
- <%@ page language="java" %>
- <html>
- <head><title>TomcatA</title></head>
- <body>
- <table align="centre" border="1">
- <tr>
- <td>Session ID</td>
- <td><%= session.getId() %></td>
- </tr>
- <tr>
- <td>Created on</td>
- <td><%= session.getCreationTime() %></td>
- </tr>
- </table>
- </body>
- </html>
- sessionID:<%=session.getId()%>
- <br>
- SessionIP:<%=request.getServerName()%>
- <br>
- SessionPort:<%=request.getServerPort()%>
- <%
- //为了区分，第二个可以是222
- out.println("This is Tomcat Server 1111");
- %>
启动tomcat，发现有异常：com.orangefunction.tomcat.redissessions.RedisSessionHandlerValve 类找不到
分别打开三个jar包，确实没有这个类，解决可以参考：
http://blog.csdn.net/qinxcb/article/details/42041023
通过访问http://10.10.49.20/test/
刷新：
可以看到虽然Server从1111变为2222，但session的创建时间没有变化，这就完成了session共享。