DWR推送到jsp页面调的方法没反应

ronghaiwu 2013-12-10 10:28:42

------web.xml



	<servlet>   

	    <servlet-name>dwr</servlet-name>   

	     <servlet-class>   

	            org.directwebremoting.servlet.DwrServlet

	     </servlet-class>   

	        <init-param>   

	        	<description>打开debug可以通过/dwr查看被加载的类</description> 

	            <param-name>debug</param-name>   

	            <param-value>true</param-value>   

		    </init-param> 

		    <init-param>  

	            <description>使用服务器推技术(反转AJAX)</description>  

	            <param-name>activeReverseAjaxEnabled</param-name>  

	            <param-value>true</param-value>  

	        </init-param>  

	        <init-param>  

	            <description>使用comet方式推送数据</description>  

	            <param-name>pollAndCometEnabled</param-name>  

	            <param-value>true</param-value>  

	        </init-param>  

	       <init-param>

				<param-name>maxWaitAfterWrite</param-name>

				<param-value>100</param-value>

			</init-param>

			<load-on-startup>4</load-on-startup>

	</servlet>

-------dwr.xml



<dwr>

	<allow>

		<!-- 让dwr自动生成StudentDwr.js文件 -->  

		

		<!-- scope属性:

			和servlet的scope一样，它允许指定哪个bean是可以获得的。

			选项可以是application、session、request和page。scope选项是可选的，默认为page。 -->

			

		<create javascript="StudentDwr" creator="spring" scope="application">

			<param name="beanName" value="studentDwr"/>

		</create>

		<!-- 转化器，DWR对于自定义的BEAN需要转换，可以用*表示所有 

		

		converter="bean"是要查关联表，"hibernate3"是不需要查关联表

		

		

		-->  

		<convert match="com.wu.pojo.*" converter="bean"/>

    </allow>

</dwr>

--list.jsp
js里已经添加 dwr.engine.setActiveReverseAjax(true);



		function sendM(){

			var send = '<s:property value="#session.loginName"/>';

			var receiver = jQuery('#receiver').val();

			var msg = jQuery('#mes').val();

			StudentDwr.send(send,receiver,msg);

		}

		

		function showM(sender){

			alert(sender);

			//var msg = new MessShow("hello",250,150,"消息提示",sender+":",msg,"_bank","http://www.baidu.com");

			//alert(msg);

			//msg.show();

		}

---java



	

	@SuppressWarnings({ "unchecked", "deprecation" })

	public void send(String sender, String receiver, String msg){

		WebContext context = WebContextFactory.get();

		Collection<ScriptSession> sessions = context.getScriptSessionsByPage("/SSI/list.jsp");

		Util util = new Util(sessions);

		ScriptBuffer sb = new ScriptBuffer();

		sb.appendScript("showM(");

		sb.appendData(sender);

		sb.appendData(msg);

		sb.appendScript(")");

		util.addScript(sb);

	}

...全文