Java websocket入门

这是服务端

package com.socket;

import java.io.IOException;

import javax.websocket.OnClose;
import javax.websocket.OnError;
import javax.websocket.OnMessage;
import javax.websocket.OnOpen;
import javax.websocket.Session;
import javax.websocket.server.ServerEndpoint;

@ServerEndpoint("/mysocket")
public class MyWebSocket {
	
	@OnOpen
	public void onOpen(){
		System.out.println("连接已完成");
	}
	
	@OnMessage  
	public void say(String message, Session session){
		System.out.println(message);
		try {
			session.getBasicRemote().sendText("我是服务端，你好啊 客户端");
		} catch (IOException e) {
			e.printStackTrace();
		}
	}
	
	@OnError
	public void onError(Throwable t){//参数必须加上，不然不能启动
		System.out.println("error");
	}
	
	@OnClose
	public void onClose(){
		System.out.println("close");
	}
	
}

这是客户端

<!DOCTYPE html>
<html>
<head>
<title>Testing websockets</title>
</head>
<body>
  
  <script type="text/javascript">
    var ws = new WebSocket('ws://localhost:8080/socket/mysocket');
    ws.onopen = function(e){
		//alert("open...");
		//客户端发送消息
		ws.send("hello world 0.0");
	}
    
    ws.onmessage = function(event){
    	alert(event.data);
    }
  </script>
</body>
</html>

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