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Dwr的ScriptSessionListener使用，监听ScriptSessionListener的产生，消亡（2）

dwr scriptsession 监听器
阅读更多

index.jsp

  <%
  //添加监听器
    Container container = ServerContextFactory.get().getContainer(); 
 ScriptSessionManager manager = container.getBean(ScriptSessionManager.class); 
 manager.addScriptSessionListener(new AddScriptSessionListener());
  %>

<script type='text/javascript'   src='<%=request.getContextPath()%>/dwr/engine.js'></script>
<script type='text/javascript'   src='<%=request.getContextPath()%>/dwr/util.js'></script>
<script type='text/javascript'   src='<%=request.getContextPath()%>/dwr/interface/UserService.js'></script>

<body onload="dwr.engine.setActiveReverseAjax(true);">

-------------------------------------------------------------------------------------------------------

AddScriptSessionListener.java

 

 package com.huawei.listener;
 
 import java.util.HashMap;
 import java.util.Map;
 
 import org.directwebremoting.ScriptSession;
 import org.directwebremoting.WebContext;
 import org.directwebremoting.WebContextFactory;
 import org.directwebremoting.event.ScriptSessionEvent;
 import org.directwebremoting.event.ScriptSessionListener;
 
 public class AddScriptSessionListener implements ScriptSessionListener {
  public static Map<String, ScriptSession> sc=new HashMap<String, ScriptSession>();
 
  public void sessionCreated(ScriptSessionEvent ev) {
   WebContext webContext = WebContextFactory.get();
   sc.put(webContext.getSession().getId(), ev.getSession());
   System.out.println("add --------->"+ev.getSession().getId());
  }
 
  public void sessionDestroyed(ScriptSessionEvent ev) {
   System.out.println("remove --------->"+ev.getSession().getId());
  }
 
 
 }

----------------------------------------------------------------------

UserService.java

 

public void addUser(){
        ScriptBuffer script = new ScriptBuffer();  
        script.appendScript("add(").appendData(System.currentTimeMillis())  
          .appendScript(");");  
        sc2=AddScriptSessionListener.sc;
        for (String str:sc2.keySet()) {
         System.err.println("-------"+sc2.get(str).getId());
         sc2.get(str).addScript(script);  
  }
 }

 

 

//如果服务器关闭dwr还弹错误提示窗口，在页面上加上这一句
   dwr.engine.setErrorHandler(function(){});

 

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| Dwr的ScriptSessionListener使用，监听Sc ...
评论
1 楼 hehe264 2012-07-15  
在index.jsp 加监听器 报错。
No singleton ServerContext see logs for possible causes and solutions.
咋会事？

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