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实验环境
基于VMware虚拟机，4台虚拟机，下关配置如下表
image.png
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准备session共享依赖jar包
image.png
依赖jar包集合下载
链接：https://pan.baidu.com/s/1SHNxal7EbDY-pMMj0ynEsg 密码：olkk - 配置nginx中的nginx.conf
vim nginx.conf
http {
upstream test {
server 192.168.1.157:8080 max_fails=1 fail_timeout=5s;
server 192.168.1.156:8080 max_fails=1 fail_timeout=5s;
}
}
修改nginx.conf的location上下文
server {
location / {
root html;
index index.html index.htm;
proxy_pass http://test;
}
}
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在$TOMCAT_HOME/lib中添加依赖jar包
image.png
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配置tomcat中的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="192.168.1.100"
port="6379"
database="0"
maxInactiveInterval="60" />
</Context>
- 在webapps目录下新建text目录，并且再tomcat/webapps/text放一个index.jsp
[root@localhost text]# vim index.jsp
<%@ page language="java" %>
<html>
<head><title>TomcatA</title></head>
<body>
<h1 style="color: red;">TomcatA</h1>
<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B
out.println("This is Tomcat Server A");
%>
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启动tomcat、nginx、redis，并访问 http://192.168.1.155/text/
效果如下图：
建议使用Chrome浏览器无痕模式，消除缓存影响，效果立马呈现
session.gif
可以看到虽然Server从TomcatA变为TomcatB，但session的创建时间没有变化，这就完成了session共享。THE END
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