java websocket客户端没响应

hujianreplace 2015-04-02 09:39:25

问题:
客户端请求时, 服务端能收到请求信息, 服务端发出的信息客户端收不到.
说明:
客户端没有问题, 从PHP 当服务端的例子中拿出来的, PHP那个例子可以正常运行

客户端html



<!DOCTYPE html>

<html dir="ltr" lang="zh" xmlns="http://www.w3.org/1999/xhtml">

<head>

<title>websocket聊天室</title>

<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />

<link rel="stylesheet" type="text/css" href="css/bootstrap.min.css">



</head>

<body>

<div class="container">

	<p>在线人数<span id="userNum"></span></p>

	<textarea id="message" rows="10"></textarea>

	<div class="send">

		<p><textarea id="input" placeholder="请输入要发送的内容"></textarea></p>

		<p><button type="button" class="btn btn-primary" id="sub">发送</button></p>

	</div>

</div>

<script type="text/javascript">

(function(){

	var $ = function(id){return document.getElementById(id) || null;}

	var wsServer = 'ws://127.0.0.1:8888'; 

	var ws = new WebSocket(wsServer);

	var isConnect = false;

	ws.onopen = function (evt) { onOpen(evt) }; 

	ws.onclose = function (evt) { onClose(evt) }; 

	ws.onmessage = function (evt) { onMessage(evt) }; 

	ws.onerror = function (evt) { onError(evt) }; 

	function onOpen(evt) { 

		alert("连接服务器成功");

		console.log("连接服务器成功");

		isConnect = true;

	} 

	function onClose(evt) { 

		//console.log("Disconnected"); 

	} 

	function onMessage(evt) {

		var data = JSON.parse(evt.data);

		switch (data.type) {

			case 'text':

				addMsg(data.msg);

				break;

			case 'num' :

				updataUserNum(data.msg);

				break;

		}

		

		console.log('Retrieved data from server: ' + evt.data);

	}

	function onError(evt) { 

		console.log('Error occured: ' + evt.data); 

	}

	function sendMsg() {

		if(isConnect){

			ws.send($('input').value);

			$('input').value = '';

		}

	}

	function addMsg(msg) {

		msg = JSON.parse(msg);

		var text = '用户' + msg.user + '说:\n' + msg.text + '\n';

		$('message').value += text;

		$('message').scrollTop = $('message').scrollHeight;

	}

	function updataUserNum(msg) {

		$('userNum').innerText = msg;

	}

	$('sub').addEventListener('click',sendMsg,false);

})();

</script>

</body>

</html>

服务端代码



package com.hj.websocket.server;



import java.io.ByteArrayOutputStream;

import java.io.IOException;

import java.io.InputStream;

import java.io.OutputStream;

import java.net.ServerSocket;

import java.net.Socket;

import java.security.MessageDigest;

import java.util.regex.Matcher;

import java.util.regex.Pattern;



import sun.misc.BASE64Encoder;



public class WebSocket {

	private int port=8080;

	private int maxUser = 10;

	

	public WebSocket(int port, int maxUser){

		this.port = port;

		this.maxUser = maxUser;

	}

	

	public void startServer(){

		ServerSocket serverSocket = null;

		try {

			serverSocket = new ServerSocket(this.port, this.maxUser);

			System.out.println("服务器启动");

			while(true){

				Socket accept = serverSocket.accept();			

				new Thread(new SocketThread(accept)).start();

			}

		} catch (IOException e) {

			e.printStackTrace();

		} finally{

			try {

				if(serverSocket != null && !serverSocket.isClosed() ){

					serverSocket.close();

				}

			} catch (IOException e) {

				e.printStackTrace();

			}

		}

	}

}



class SocketThread implements Runnable {



	private Socket socket = null;

	

	public SocketThread(Socket socket){

		this.socket = socket;

	}

	

	@Override

	public void run(){

		String data = "";

		InputStream inStream = null;

		

		try {

			inStream = this.socket.getInputStream();

			while(true){

				data = new String(SocketThread.readStream(inStream), "UTF-8");

				if(!data.equals("")){

					this.upgrade(data);

				}

				Thread.sleep(50);

			}

		} catch (Exception e) {

			e.printStackTrace();

		}

	}

	

	private String upgrade(String data) throws Exception{

		String strPat = "Sec-WebSocket-Key: (.*)\r\n";

		Pattern regPat = Pattern.compile(strPat);

		Matcher m = regPat.matcher(data);

		String key = "";

		String upgrade = "";

		OutputStream ouStream = null;

		while(m.find()){

			ouStream = this.socket.getOutputStream();

			String base_key = m.group(1)+"258EAFA5-E914-47DA-95CA-C5AB0DC85B11";

			//String test = new String(MessageDigest.getInstance("SHA-1").digest("123456".getBytes()));

			key = new BASE64Encoder().encode(MessageDigest.getInstance("SHA-1").digest(base_key.getBytes()));

			upgrade  = "HTTP/1.1 101 Switching Protocol\r\n" +

					"Upgrade: websocket\r\n" +

					"Connection: Upgrade\r\n" +

					"Sec-WebSocket-Accept: " + key + "\r\n\r\n";  //一定要两个\r\n

			byte[] b = upgrade.getBytes("UTF-8");

			ouStream.write(b, 0, b.length);

			ouStream.flush();

			ouStream.close();

			break;

	    }

		return upgrade;

	}

	

	public static byte[] readStream(InputStream inStream) {  

	    ByteArrayOutputStream outSteam = new ByteArrayOutputStream();  

	    byte[] buffer = new byte[1024];  

	    int len = -1;

	    try {

			while ((len = inStream.read(buffer)) != -1) {  

			    outSteam.write(buffer, 0, len);

			}

			outSteam.close();

		} catch (IOException e) {

			e.printStackTrace();

		}  

	    

	    return outSteam.toByteArray();

	}

}

服务端启动
package com.hj.websocket.server;

public class WebSocketMain {
public static void main(String[] args) throws Exception {
WebSocket ws = new WebSocket(8888, 10);
ws.startServer();
}
}

...全文