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设置tomcat集群使用redis实现分布式session

2016-01-14 16:53 931 查看

1、把以下jar放进tomcat的lib目录

commons-pool2-2.2.jar
jedis-2.5.2.jar
tomcat-redis-session-manage-tomcat7.jar

2、编辑conf目录的context.xml，加入以下内容

<Valve className="com.orangefunction.tomcat.redissessions.RedisSessionHandlerValve"/>
<Manager className="com.orangefunction.tomcat.redissessions.RedisSessionManager"
host="192.168.30.61"
port="6379"
database="0"
password="abc123456"
maxInactiveInterval="60" />

3、要持久化的bean必须 implements Serializable

要持久化的对象（session.setAttribute()里的对象）必须实现序列化(implements Serializable)，否则启动的时候会报NotSerializableException的异常.

下面来验证两个tomcat都是使用redis存取session

配置两个tomcat分别为

apache-tomcat-test1
apache-tomcat-test2

配置apache-tomcat-test1的server.xml

<Connector port="8081"
protocol="HTTP/1.1"
connectionTimeout="20000"
redirectPort="8445" URIEncoding="utf-8"/>
<Connector port="8010" protocol="AJP/1.3" redirectPort="8445"  URIEncoding="utf-8"/>

配置apache-tomcat-test2的server.xml

<Server port="8007" shutdown="SHUTDOWN">
<Connector port="8082" protocol="HTTP/1.1"
connectionTimeout="20000"
redirectPort="8446" URIEncoding="utf-8"/>
<Connector port="8011" protocol="AJP/1.3" redirectPort="8446" URIEncoding="utf-8"/>

编写访问页面

在两个tomcat都新建一个项目redisSession

在redisSession目录新建一个测试页面index.jsp

编写tomcat1的index.jsp

<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8" %>
<!DOCTYPE HTML><html lang="en"><head>
<meta charset="UTF-8">
<title>Apache Tomcat Examples_1</title>
</head>
<body>
<p>
<h3>Apache Tomcat Examples-redis-server-1</H3>
<%=request.getParameter("name")%>
<%
String name = request.getParameter("name");
if (name != null && !name.equals("")) {
request.getSession().setAttribute("name", name);
System.out.println("Apache Tomcat Examples-redis-server-1");
}
%>
<p>
<%=request.getSession().getAttribute("name")%>
</p>
</body>
</html>

编写tomcat2的index.jsp的内容

<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8" %>
<!DOCTYPE HTML><html lang="en"><head>
<meta charset="UTF-8">
<title>Apache Tomcat Examples_2</title>
</head>
<body>
<p>
<h3>Apache Tomcat Examples-redis-server-<font color='red'>2</font></H3>
<p>
<% System.out.println("Apache Tomcat Examples-redis-server-2");%>
</p>

<p>
<%=request.getSession().getAttribute("name")%>
</p>
</body>
</html>

启动两个 tomcat

先访问tomcat1

http://localhost:8081/redisSession/index.jsp?name=yiliang

再访问tomcat2

http://localhost:8082/redisSession/index.jsp

由于tomcat2是没有设置session的，但request.getSession().getAttribute(“name”)还是有值

证实了两个tomcat确实用redis存取session.

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