网络编程练习：聊天

秒速五厘米 2021-09-30 03:54 331阅读 0赞

【需求】：实现双方聊天（收数据和发数据）

【技术】：网络编程、IO流、多线程

【代码】：

/*
    需求：实现双方聊天（收数据和发数据）
    所需技术：网络编程、IO流、多线程
    */
    import java.net.*;
    import java.io.*;
    class SendInfo implements Runnable
    {
    	private DatagramSocket ds;
    	public SendInfo(DatagramSocket ds){
    		this.ds=ds;
    	}
    	public void run(){
    		try{
    			BufferedReader bufr=new BufferedReader(new InputStreamReader(System.in));
    			String line=null;
    			while((line=bufr.readLine())!=null){
    				if("0000".equals(line))
    					break;
    				byte[] buf=line.getBytes();
    				DatagramPacket dp=new DatagramPacket(buf,buf.length,InetAddress.getByName("127.0.0.1"),10001);
    				ds.send(dp);
    			}
    		}
    		catch (Exception e){
    			throw new RuntimeException("发送数据异常！！！");
    		}
    	}
    }
    class ReceInfo implements Runnable
    {
    	private DatagramSocket ds;
    	public ReceInfo(DatagramSocket ds){
    		this.ds=ds;
    	}
    	public void run(){
    		try{
    			while(true){
    				byte[] buf=new byte[1024];
    				DatagramPacket dp=new DatagramPacket(buf,buf.length);
    				ds.receive(dp);
    				String ip=dp.getAddress().getHostAddress();
    				String data=new String(dp.getData(),0,dp.getLength());
    				int port=dp.getPort();
    				System.out.println(ip+"\\"+port+"::"+data);
    			}
    		}
    		catch (Exception e){
    			throw new RuntimeException("接收数据异常！！！");
    		}
    	}
    }
    class UdpChat
    {
    	public static void main(String[] args) throws Exception
    	{
    		DatagramSocket sendSocket=new DatagramSocket(6666);
    		DatagramSocket receSocket=new DatagramSocket(10001);
    		
    		new Thread(new SendInfo(sendSocket)).start();
    		new Thread(new ReceInfo(receSocket)).start();
    	}
    }

【截图】：

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L1RoZV9CZXN0X0hhY2tlcg_size_16_color_FFFFFF_t_70][]

由于只有博主一个人所以属于自娱自乐。。。

[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L1RoZV9CZXN0X0hhY2tlcg_size_16_color_FFFFFF_t_70]: /images/20210811/de7fddad50c94bab9f243ac4bbfae655.png