tomcat8的session共享實現方案
阿新 • • 發佈：2018-08-05
add address local test cal option ole ber .get tomcat8的session共享實現
下載tomcat
版本：apache-tomcat-8.0.53.zip
實現步驟，只需要兩步
- 兩個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.MessageDispatch15Interceptor" /> </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tomcat的應用的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/> - 然後重啟兩臺tomcat即可
新建jsp測試
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
註意事項
- 需要使用tomcat8版本（上述測試在8.0.53上通過）。如果需要tomcat7，請告訴我，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
- 這種方案只適用於並發量較少的應用，目前可以先用著，明天我再嘗試並發量大的復雜一點的方案看行不行
參考官網：
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
tomcat8的session共享實現方案