tomcat8的session共享實(shí)現(xiàn)方案

發(fā)布時(shí)間：2020-07-28 00:52:48 來源：網(wǎng)絡(luò) 閱讀：2723 作者：ouyida3 欄目：軟件技術(shù)

tomcat8的session共享實(shí)現(xiàn)

下載tomcat

版本：apache-tomcat-8.0.53.zip

實(shí)現(xiàn)步驟，只需要兩步

兩個(gè)tomcat的server.xml都增加一樣cluster配置

<Cluster className="org.apache.catalina.ha.tcp.SimpleTcpCluster"
    channelSendOptions="8">
    <Manager
        className="org.apache.catalina.ha.session.DeltaManager"
        expireSessionsOnShutdown="false" notifyListenersOnReplication="true" />
    <Channel
        className="org.apache.catalina.tribes.group.GroupChannel">
        <Membership
            className="org.apache.catalina.tribes.membership.McastService"
            address="228.0.0.4" port="45564" frequency="500" dropTime="3000" />
        <Receiver
            className="org.apache.catalina.tribes.transport.nio.NioReceiver"
            address="auto" port="4000" autoBind="100" selectorTimeout="5000"
            maxThreads="6" />
        <Sender
            className="org.apache.catalina.tribes.transport.ReplicationTransmitter">
            <Transport
                className="org.apache.catalina.tribes.transport.nio.PooledParallelSender" />
        </Sender>
        <Interceptor
            className="org.apache.catalina.tribes.group.interceptors.TcpFailureDetector" />
        <Interceptor
            className="org.apache.catalina.tribes.group.interceptors.MessageDispatch25Interceptor" />
    </Channel>
    <Valve className="org.apache.catalina.ha.tcp.ReplicationValve"
        filter="" />
    <Valve
        className="org.apache.catalina.ha.session.JvmRouteBinderValve" />
    <Deployer
        className="org.apache.catalina.ha.deploy.FarmWarDeployer"
        tempDir="/tmp/war-temp/" deployDir="/tmp/war-deploy/"
        watchDir="/tmp/war-listen/" watchEnabled="false" />
    <ClusterListener
        className="org.apache.catalina.ha.session.ClusterSessionListener" />
</Cluster>

兩個(gè)tomcat的應(yīng)用的web.xml下都增加<distributable/>
比如在：
/Users/da/Library/Tomcat/apache-tomcat-8.0.53-8081/webapps/ROOT/WEB-INF/web.xml
增加：
<distributable/>
然后重啟兩臺(tái)tomcat即可

新建jsp測(cè)試

session.jsp

<html>
<head>
<title>test2</title>
</head>
<body>
    SessionID is
    <%=session.getId()%>
    <BR> SessionIP is
    <%=request.getServerName()%>
    <BR> SessionPort is
    <%=request.getServerPort()%>
    <%
        out.println("Response from tomcat2");
    %>
</body>
</html>

比如放置在：
/Users/da/Library/Tomcat/apache-tomcat-8.0.53-8082/webapps/ROOT/session.jsp
另一臺(tái)一樣。

訪問：
http://localhost:8081/session.jsp
http://localhost:8082/session.jsp

sessionid一致：

SessionID is 6E5D26E07FDE6FB5D01A59F457D64333 
SessionIP is tomcat.chinaunicom.tech 
SessionPort is 80 Response from tomcat1

SessionID is 6E5D26E07FDE6FB5D01A59F457D64333 
SessionIP is tomcat.chinaunicom.tech 
SessionPort is 80 Response from tomcat2

注意事項(xiàng)

需要使用tomcat8版本（上述測(cè)試在8.0.53上通過）。如果需要tomcat7，請(qǐng)告訴我，不是這種配置，我需要修改一下
不要漏了distributable的配置，漏了session也不能共享
這種方案只適用于并發(fā)量較少的應(yīng)用，目前可以先用著，明天我再嘗試并發(fā)量大的復(fù)雜一點(diǎn)的方案看行不行

參考官網(wǎng)：
http://localhost:8082/docs/cluster-howto.html
http://tomcat.apache.org/tomcat-8.0-doc/config/cluster.html
翻譯：
http://wiki.jikexueyuan.com/project/tomcat/clustering.html

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tomcat8的session共享實(shí)現(xiàn)方案