基于html5的WebSocket使用方式。承接jetty配置(转载)

蓝晶灵 · 发表于 2017-2-27 08:51:11

转载自:..
http://yangzc106.iteye.com/blog/1030473

创建类：WebSearchServlet.java
Java代码
package org.search.servlet;

import javax.servlet.http.HttpServletRequest;

import org.eclipse.jetty.websocket.WebSocket;
import org.eclipse.jetty.websocket.WebSocketServlet;

public class WebSearchServlet extends WebSocketServlet{

/**
   *
   */
private static final long serialVersionUID = 5136484809757218548L;

public WebSocket doWebSocketConnect(HttpServletRequest arg0, String arg1) {
      return new SearchServlet();
}
}

创建类：SearchServlet.java
Java代码
package org.search.servlet;

import org.eclipse.jetty.websocket.WebSocket;

public class SearchServlet implements WebSocket{

public void onClose(int arg0, String arg1) {
      System.out.println("onClose");
}

public void onOpen(final Connection conn) {
      System.out.println("onOpen");
      new Thread() {
         @Override
         public void run() {
               try {
                  conn.sendMessage("sdfsdf");
                  int i =0;
                  while (true) {
                     sleep(1000);
                     conn.sendMessage("Count:" + (i++));
                  }
               } catch (final Exception e) {
                  System.err.println(e.getMessage());
               }
         }
      }.start();
}

}

在JSP目录下新建文件comet.html内容如下：
Java代码
<html>
<head>
      <title>WebSoket Demo</title>
      <script type="text/javascript">
         if (!window.WebSocket) {
            alert("WebSocket not supported by this browser!");
         }

         function display() {
            var valueLabel = document.getElementById("valueLabel");
            valueLabel.innerHTML = "";
            var ws = new WebSocket("ws://localhost:9999/comet.do");
            ws.onmessage = function(evt) {
                  valueLabel.innerHTML = evt.data;
            };

            ws.onclose = function() {
            };

            ws.onopen = function() {
                  ws.send("Hello, Server!");
            };

         }
      </script>
</head>
<body >
      <div id="valueLabel"></div>
</body>
</html>

运行jetty.访问地址http://localhost:9999/comet.html效果如下：

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密码			立即注册

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[经验分享] 基于html5的WebSocket使用方式。承接jetty配置(转载)

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