java:带有图形化界面，可以发送和接收的聊天工具

水深无声 2022-08-02 15:54 143阅读 0赞

/**
    	根据UDP协议，设计一个聊天程序，可以发送和接收，并有相应的图形化界面
    */
    import java.net.*;
    import java.awt.*;
    import java.awt.event.*;
    
    //发送信息
    class ChatSend implements Runnable
    {
    	private Button but;  //发送按钮
    	private TextArea tain;  //输入文本
    	private TextArea taout;  //接收信息，并显示自己的信息
    	
    	public ChatSend(Button but, TextArea tain, TextArea taout)
    	{
    		this.but = but;
    		this.tain = tain;
    		this.taout = taout;
    	}
    	
    	public void run()
    	{
    		//添加按钮监听，发送数据
    		but.addActionListener(new ActionListener()
    		{
    			public void actionPerformed(ActionEvent e)
    			{
    				try
    				{		
    					//创建Socket服务
    					DatagramSocket SendSocket = new DatagramSocket();
    					
    					//获取输入文本区域里的字符串
    					String line = tain.getText();	
    		
    					byte[] buf = line.getBytes();
    					
    					//数据打包，发送
    					DatagramPacket dp = new DatagramPacket(buf, buf.length, InetAddress.getByName("10.22.72.144"), 4008);
    					SendSocket.send(dp);
    
    					tain.setText("");
    					taout.append(line +"\r\n");
    					
    					SendSocket.close();
    				}
    				catch(Exception ex)
    				{
    					System.out.println(e.toString());
    				}
    			}
    		});
    
    		//文本框中输入回车键监听
    		tain.addKeyListener(new KeyAdapter()
    		{
    			public void keyPressed(KeyEvent e)
    			{
    				if(e.getKeyCode() == e.VK_ENTER)
    				{
    					try
    					{		
    						//创建Socket服务
    						DatagramSocket SendSocket = new DatagramSocket();
    						
    						//获取文本区域里的字符串
    						String line = tain.getText();	
    			
    						byte[] buf = line.getBytes();
    						
    						//数据打包发送
    						DatagramPacket dp = new DatagramPacket(buf, buf.length, InetAddress.getByName("10.22.72.144"), 4008);
    						SendSocket.send(dp);
    
    						tain.setText("");
    						taout.append(line +"\r\n");
    
    						SendSocket.close();
    					}
    					catch(Exception ex)
    					{
    						System.out.println(e.toString());
    					}
    				}
    			}
    		});
    	
    	}
    }
    
    //接收信息
    class ChatReceive implements Runnable
    {
    	private TextArea taout; //接收信息区域
    	
    	public ChatReceive(TextArea taout)
    	{
    		this.taout = taout;
    	}
    	
    	public void run()
    	{
    		while(true)
    		{	
    			try
    			{
    				//创建Socket服务
    				DatagramSocket RecSocket = new DatagramSocket(5009);
    				
    				//创建数据包，接收数据
    				byte[] buf = new byte[1024];
    				DatagramPacket dp = new DatagramPacket(buf, buf.length);
    				RecSocket.receive(dp);
    				
    				//获取数据信息
    				String ip = dp.getAddress().getHostAddress();
    				String data = new String(dp.getData(), 0, dp.getLength());
    				
    				//信息添加到文本区域
    				taout.append(ip +":"+data +"\r\n");
    				
    				RecSocket.close();
    			}
    			catch(Exception ex)
    			{
    				System.out.println(ex.toString());
    			}			
    		}
    	}
    }
    
    
    
    class Chat
    {
    	public static void main(String[] args)
    	{
    		//设计图形化界面
    		Frame f = new Frame("我聊");
    		f.setSize(400, 400);
    		f.setLocation(300, 250);
    		f.setLayout(new FlowLayout());
    		
    		//创建部件
    		TextArea tain = new TextArea();		
    		TextArea taout = new TextArea();		
    		Button but = new Button("发送");
    		
    		taout.setColumns(50);
    		taout.setRows(18);
    		tain.setColumns(40);
    		tain.setRows(2);
    		
    		f.add(taout);
    		f.add(tain);
    		f.add(but);
    				
    		f.setVisible(true);
    		
    		//窗口关闭监听
    		f.addWindowListener(new WindowAdapter()
    		{
    			public void windowClosing(WindowEvent e)
    			{
    				f.setVisible(false);
    				System.exit(0);
    			}
    		});
    		
    		//创建并启动发送、接收线程
    		new Thread(new ChatSend(but, tain, taout)).start();
    		new Thread(new ChatReceive(taout)).start();
    	
    	}
    }
    
    <pre name="code" class="java">

![Center][]

[Center]: /images/20220731/23c62a7e6c714e199e6047eb8cf103e1.png