The FlexSession is invalid问题
package com.cmbj.soa.servicemonitor.view.service.impl; import java.util.Enumeration; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import javax.servlet.http.HttpSession; import flex.messaging.HttpFlexSession; import flex.messaging.MessageBrokerServlet; public class KMessageBrokerServlet extends MessageBrokerServlet { @Override public void service(HttpServletRequest req, HttpServletResponse res) { HttpSession httpSession = req.getSession(true); HttpFlexSession flexSession = (HttpFlexSession)httpSession.getAttribute("__flexSession"); if( flexSession != null && !flexSession.isValid()){ httpSession.removeAttribute("__flexSession"); } // HttpSession httpSession = req.getSession(true); // // Enumeration<String> names = httpSession.getAttributeNames(); // String name = null; // for (; names.hasMoreElements();) { // name = names.nextElement(); // if (httpSession.getAttribute(name) instanceof HttpFlexSession) { // HttpFlexSession flexSession = (HttpFlexSession) httpSession.getAttribute(name); // if(null != flexSession && !flexSession.isValid()){ // httpSession.setAttribute(name,null); // httpSession.removeAttribute(name); // } // System.out.println("HttpFlexSession_name is " + name); // } // } super.service(req, res); } }
重写MessageBrokerServlet的service方法,因为异常的源头来自该servlet用了一个invalid的HttpFlexSession去获取Principal,所以只要再service方法之前先判断下当前的HttpFlexSession是否已经无效,无效的话我们就从当前的HttpSession中移除这个无效的HttpFlexSession即可。这样,就能保证MessageBrokerServlet中所用的HttpFlexSession一定是有效的
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