dwr3实现根据用户id精准推动实例

package com.dwr.sendmessage; import javax.servlet.ServletException; import javax.servlet.http.HttpSession; import org.directwebremoting.Container; import org.directwebremoting.ServerContextFactory; import org.directwebremoting.WebContextFactory; import org.directwebremoting.event.ScriptSessionEvent; import org.directwebremoting.event.ScriptSessionListener; import org.directwebremoting.extend.ScriptSessionManager; import org.directwebremoting.servlet.DwrServlet; public class DwrScriptSessionManagerUtil extends DwrServlet{ private static final long serialVersionUID = -7504612622407420071L; public void init()throws ServletException { Container container = ServerContextFactory.get().getContainer(); ScriptSessionManager manager = container.getBean(ScriptSessionManager.class); ScriptSessionListener listener = new ScriptSessionListener() { public void sessionCreated(ScriptSessionEvent ev) { HttpSession session = WebContextFactory.get().getSession(); String userId =((User) session.getAttribute("userinfo")).getHumanid()+""; System.out.println("a ScriptSession is created!"+"用户id="+userId); ev.getSession().setAttribute("userId", userId); } public void sessionDestroyed(ScriptSessionEvent ev) { System.out.println("a ScriptSession is distroyed"); } }; manager.addScriptSessionListener(listener); } }