• (转)Tomcat7+Redis存储Session


    原创http://blog.csdn.net/caiwenfeng_for_23/article/details/45666831

    PS:截止到2015-05-12前是不支持Tomcat8的,详情见官网:https://github.com/jcoleman/tomcat-redis-session-manager

    前提:你已经部署了Redis,尚未学会的,可以移步这里:http://blog.csdn.net/caiwenfeng_for_23/article/details/45511007

    我的案例下载:http://download.csdn.net/detail/caiwenfeng_for_23/8689847

    其实很简单,就几个步骤: 
    1.配置Tomcat的conf目录下的context.xml文件:

    1> 单点Reids配置

        <!-- 
        Jedis save session
        -->
        <Valve className="com.orangefunction.tomcat.redissessions.RedisSessionHandlerValve" />        
        <Manager className="com.orangefunction.tomcat.redissessions.RedisSessionManager" 
            host="localhost" 
            port="6379" 
            database="0" 
            maxInactiveInterval="60"/>

    2> Sentinel集群配置:

            <!-- Sentinel 配置 -->
         <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"
            />

    2.添加jar

    这里写图片描述

    3.测试

    1> 
    存储Session:

        protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
            System.out.println("hello");
               //取得Session对象
            HttpSession session=request.getSession(); 
            //设置Session属性
            for(int i=0;i<100000;i++){
                session.setAttribute("name"+i, "Magci_"+i); 
            }
        }

    2>重启Tomcat:假如Session保存在tomcat下,重启后Session不存在;如果保存在Redis下,Tomcat重启对Session无影响

    3>取出Session:

        protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
            System.out.println("hello");
               //取得Session对象
            HttpSession session=request.getSession(); 
            //取出Session属性
            for(int i=0;i<100000;i++){
                System.out.println(session.getAttribute("name"+i));
            }
        }

    注意事项:从Tomcat6开始默认开启了Session持久化设置,测试时可以关闭本地Session持久化,其实也很简单,在Tomcat的conf目录下的context.xml文件中,取消注释下面那段配置即可:

        <!-- Uncomment this to disable session persistence across Tomcat restarts -->
        <!--
        <Manager pathname="" />
        -->

    详见这篇博客:Session持久化的实例分析

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  • 原文地址:https://www.cnblogs.com/yewg/p/5562074.html
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