JSF Session timeout处理

在用JSF做项目的时候，经常会碰到session timeout问题，比如部署在tomcat下的时候，默认的timeout时间为30分钟，则在30分钟以后，点击页面上的任何commandButton或commandLink都会导致抛出<lifecycle><phase-listener>com.tcb.flow.webui.jsf.listener.AuthenticationPhaseListener</phase-listener></lifecycle>

?AuthenticationPhaseListener的代码如下：

?

package com.test.listener;import javax.faces.FacesException;import javax.faces.application.Application;import javax.faces.application.ViewHandler;import javax.faces.component.UIViewRoot;import javax.faces.context.ExternalContext;import javax.faces.context.FacesContext;import javax.faces.event.PhaseEvent;import javax.faces.event.PhaseId;import javax.faces.event.PhaseListener;import javax.servlet.http.HttpServletRequest;import javax.servlet.http.HttpServletResponse;import javax.servlet.http.HttpSession;import org.apache.commons.logging.Log;import org.apache.commons.logging.LogFactory;import com.test.Constants;public class AuthenticationPhaseListener implements PhaseListener {private static final Log logger = LogFactory.getLog(AuthenticationPhaseListener.class);public void afterPhase(PhaseEvent event) {// other operation}public void beforePhase(PhaseEvent event) {FacesContext context = event.getFacesContext();ExternalContext externalContext = context.getExternalContext();HttpSession session = (HttpSession) externalContext.getSession(false);boolean newSession = session == null || session.isNew();boolean postBack = !externalContext.getRequestParameterMap().isEmpty();//form submitif (newSession && postBack) {//timeoutViewHandler viewHandler = context.getApplication().getViewHandler();UIViewRoot viewRoot = viewHandler.createView(context, "/index.jsp");context.setViewRoot(viewRoot);context.renderResponse();try {viewHandler.renderView(context, viewRoot);context.responseComplete();} catch (Exception e) {throw new FacesException("Session is timeout", e);}}}public PhaseId getPhaseId() {return PhaseId.RESTORE_VIEW;}}

?如果是new session且是表单提交则跳转到登录页面。

?

【附faces-config.xml配置信息】

<?xml version="1.0" encoding="UTF-8"?><faces-config xmlns="http://java.sun.com/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-facesconfig_2_0.xsd"version="2.0"><lifecycle><phase-listener>com.tcb.flow.webui.jsf.listener.AuthenticationPhaseListener</phase-listener></lifecycle><application><action-listener>com.tcb.flow.webui.jsf.listener.AuthenticationActionListener</action-listener><variable-resolver>org.springframework.web.jsf.DelegatingVariableResolver</variable-resolver><message-bundle>resource.messages</message-bundle><resource-bundle><description>i18n message for framework</description><base-name>resource.messages</base-name><var>msg</var></resource-bundle><resource-bundle><description>i18n message for common action</description><base-name>com.action.package</base-name><var>comMsg</var></resource-bundle><resource-bundle><description>i18n message for action used by managing user</description><base-name>com.action.manage.package</base-name><var>mgrMsg</var></resource-bundle><resource-bundle><description>i18n message for system action</description><base-name>com.action.system.package</base-name><var>sysMsg</var></resource-bundle></application><navigation-rule><navigation-case><from-outcome>error</from-outcome><to-view-id>/common/systemMessage.jsp</to-view-id></navigation-case><navigation-case><from-outcome>index</from-outcome><to-view-id>/index.jsp</to-view-id><redirect /></navigation-case><navigation-case><from-outcome>confirmLogout</from-outcome><to-view-id>/confirmLogout.jsp</to-view-id></navigation-case><navigation-case><from-outcome>viewLoginInfo</from-outcome><to-view-id>/common/viewLoginInfo.jsp</to-view-id><redirect /></navigation-case></navigation-rule></faces-config>

?