java|android 使用SocketIO.jar连接nodejs websocket

最新推荐文章于 2021-05-27 08:21:01 发布

Shirly_YY

最新推荐文章于 2021-05-27 08:21:01 发布

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文章标签： android socket websocket

本文介绍如何使用socket.io-client库连接Node.js WebSocket服务器，并演示如何发送和接收消息、调用自定义方法及设置头部信息。

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socket.io-client版连接nodejs websocket

http://blog.youkuaiyun.com/aojiancc2/article/details/46129511

一：更具url建立连接,调用想要的方法

[java]view plaincopy 
   
 SocketIO socket;  
             try {  
                 socket = new SocketIO("url");  
                           
                 socket.connect(new IOCallback() {  
                       
                     public void onMessage(JSONObject json, IOAcknowledge ack) {  
                         try  
                         {  
                             System.out.println("there Server said:" + json.toString(2));  
                         }   
                         catch (JSONException e) {  
                             e.printStackTrace();  
                         }  
                     }  
                     public void onMessage(String data, IOAcknowledge ack) {  
                         try  
                         {  
                           System.out.println(" 22 Server said: " + data);  
                         }  
                         catch(Exception e)  
                         {  
                             System.out.println("xxxxxxxxx:"+e.getMessage());  
                         }  
                     }  
                     public void onError(SocketIOException socketIOException) {  
                         System.out.println("an Error occured:"+socketIOException.getMessage());  
                         socketIOException.printStackTrace();  
                     }  
                     public void onDisconnect() {  
                         System.out.println("Connection terminated.");  
                     }  
   
                     public void onConnect() {  
                         System.out.println("Connection established");  
                     }  
   
                     public void on(String event, IOAcknowledge ack, Object... args) {  
                           
                         System.out.println("Server triggered event '" + event + "'");  
                           
                         for(int i=0;i<args.length;i++){  
                         System.out.println("参数 '"+i+":" +args[i] );  
                         }  
                     }  
                 });       

onMessage是默认的方法，只要连接成功服务端就可以通过message向你发送数据
客户端onMessage会自动回调

但是服务器端会有很多自定义方法，怎么让服务器端知道我们想要调用的方法，就需要用到emit，向服务器端传递方法名与参数.

socket.emit("wayname","params");

传递json参数

JSONObject json = new JSONObject();

json.putOpt("aa", "106");

json.putOpt("bb", "29");

socket.emit("wayname",json);

这时服务器一般会用其他方法进行回调而不是onMessage,一般在on方法里

[java]view plaincopy 
   
 public void on(String event, IOAcknowledge ack, Object... args) {  
                           
                         System.out.println("服务器回调了:方法名 '" + event + "'");  
                           
                         for(int i=0;i<args.length;i++){  
                         System.out.println("参数 '"+i+":" +args[i] );  
                         }  
                     }  

二：设置header，传cookies等

socket.addHeader("Cookie", "laravel_session=" + LoginActivity.PHPSESSID);

http://nodejs.netease.com/topic/51b05bc53e8b1fca03280385