Java 入门之聊天室客户端源码

阳光穿透心脏的1/2处 2022-08-20 12:13 165阅读 0赞

package View;
    
    import java.awt.BorderLayout;
    import java.awt.EventQueue;
    
    import javax.swing.JFrame;
    import javax.swing.JPanel;
    import javax.swing.border.EmptyBorder;
    import javax.swing.JTextArea;
    import javax.swing.GroupLayout;
    import javax.swing.GroupLayout.Alignment;
    import javax.swing.JTextField;
    import javax.swing.JButton;
    import javax.swing.LayoutStyle.ComponentPlacement;
    
    import ChatManager.ChatManager;
    
    import java.awt.event.MouseAdapter;
    import java.awt.event.MouseEvent;
    import java.awt.event.ActionListener;
    import java.awt.event.ActionEvent;
    
    public class MainWIndow extends JFrame {
    
    	private static final long serialVersionUID = 1L;
    	private JPanel contentPane;
    	private JTextArea txt;
    	private JTextField ip;
    	private JTextField sent;
    	private JButton button_1;
    
    	public MainWIndow() {
    		setAlwaysOnTop(true);
    		setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    		setBounds(100, 100, 450, 317);
    		contentPane = new JPanel();
    		contentPane.setBorder(new EmptyBorder(5, 5, 5, 5));
    		setContentPane(contentPane);
    
    		txt = new JTextArea();
    		txt.setText("Ready Go !!! ");
    
    		ip = new JTextField();
    		ip.setText("127.0.0.1");
    		ip.setColumns(10);
    
    		JButton button = new JButton("\u8FDE\u63A5\u5230\u670D\u52A1\u5668");
    		button.addActionListener(new ActionListener() {
    			public void actionPerformed(ActionEvent arg0) {
    			}
    		});
    		button.addMouseListener(new MouseAdapter() {
    			@Override
    			public void mouseClicked(MouseEvent arg0) {
    				// 获取服务器的 ip 地址，从而通过 ip 建立服务器链接
    //				if (!ip.getText().isEmpty()) {
    					System.out.println(ip.getText());
    					System.out.println(3);
    					System.out.println(2);
    					System.out.println(1);
    					ChatManager.GetCM().connect(ip.getText()); // 管理员 读取 ip 输入框中的字符串
    //				}
    			}
    		});
    
    		sent = new JTextField();
    		sent.setText("\u4F60\u597D \uFF01");
    		sent.setColumns(10);
    
    		button_1 = new JButton("\u53D1\u9001");
    		button_1.addMouseListener(new MouseAdapter() {
    			@Override
    			public void mouseClicked(MouseEvent arg0) {
    //				if (!sent.getText().isEmpty()) {
    					System.out.println(sent.getText());
    					ChatManager.GetCM().send(sent.getText()); // 管理员 得到 sent
    																// 输入框之中的字符串
    					AppendText("我 ：" + sent.getText()); // 显示框 得到 sent 之中的字符串
    					sent.setText(""); // 完成输入之后 置空
    //				}
    			}
    		});
    		GroupLayout gl_contentPane = new GroupLayout(contentPane);
    		gl_contentPane
    				.setHorizontalGroup(gl_contentPane
    						.createParallelGroup(Alignment.TRAILING)
    						.addGroup(
    								Alignment.LEADING,
    								gl_contentPane
    										.createSequentialGroup()
    										.addContainerGap()
    										.addGroup(
    												gl_contentPane
    														.createParallelGroup(
    																Alignment.LEADING)
    														.addComponent(
    																txt,
    																Alignment.TRAILING,
    																GroupLayout.DEFAULT_SIZE,
    																404,
    																Short.MAX_VALUE)
    														.addGroup(
    																gl_contentPane
    																		.createSequentialGroup()
    																		.addComponent(
    																				ip,
    																				GroupLayout.PREFERRED_SIZE,
    																				266,
    																				GroupLayout.PREFERRED_SIZE)
    																		.addGap(18)
    																		.addComponent(
    																				button,
    																				GroupLayout.DEFAULT_SIZE,
    																				120,
    																				Short.MAX_VALUE))
    														.addGroup(
    																Alignment.TRAILING,
    																gl_contentPane
    																		.createSequentialGroup()
    																		.addComponent(
    																				sent,
    																				GroupLayout.DEFAULT_SIZE,
    																				329,
    																				Short.MAX_VALUE)
    																		.addGap(18)
    																		.addComponent(
    																				button_1)))
    										.addContainerGap()));
    		gl_contentPane
    				.setVerticalGroup(gl_contentPane
    						.createParallelGroup(Alignment.LEADING)
    						.addGroup(
    								gl_contentPane
    										.createSequentialGroup()
    										.addGroup(
    												gl_contentPane
    														.createParallelGroup(
    																Alignment.BASELINE)
    														.addComponent(
    																ip,
    																GroupLayout.PREFERRED_SIZE,
    																GroupLayout.DEFAULT_SIZE,
    																GroupLayout.PREFERRED_SIZE)
    														.addComponent(button))
    										.addPreferredGap(
    												ComponentPlacement.UNRELATED)
    										.addComponent(txt,
    												GroupLayout.DEFAULT_SIZE, 185,
    												Short.MAX_VALUE)
    										.addPreferredGap(
    												ComponentPlacement.UNRELATED)
    										.addGroup(
    												gl_contentPane
    														.createParallelGroup(
    																Alignment.TRAILING)
    														.addComponent(button_1)
    														.addComponent(
    																sent,
    																GroupLayout.PREFERRED_SIZE,
    																39,
    																GroupLayout.PREFERRED_SIZE))
    										.addContainerGap()));
    		contentPane.setLayout(gl_contentPane);
    	}
    
    	public void AppendText(String str) {
    		txt.append("\n" + str);
    	}
    }

package ChatManager;
    
    import java.awt.EventQueue;
    
    import View.MainWIndow;
    
    public class StartClient {
    
    	/**
    	 * @param args
    	 */
    	public static void main(String[] args) {
    		EventQueue.invokeLater(new Runnable() {
    			public void run() {
    				try {
    					MainWIndow frame = new MainWIndow();
    					frame.setVisible(true);
    					ChatManager.GetCM().setMainWindow(frame);
    				} catch (Exception e) {
    					e.printStackTrace();
    				}
    			}
    		});
    	}
    }
    
    
    package ChatManager;
    
    import java.io.BufferedReader;
    import java.io.IOException;
    import java.io.InputStreamReader;
    import java.io.OutputStreamWriter;
    import java.io.PrintWriter;
    import java.net.Socket;
    import java.net.UnknownHostException;
    
    import View.MainWIndow;
    
    public class ChatManager {
    
    	private ChatManager() {
    	}
    
    	private static final ChatManager cm = new ChatManager();
    
    	public static ChatManager GetCM() {
    		return cm;
    	}
    
    	Socket socket;
    	String IP;
    	MainWIndow mw;
    	BufferedReader br;
    	PrintWriter pw;
    
    	public void setMainWindow(MainWIndow mw) {
    		this.mw = mw;
    		mw.AppendText("启禀皇上，您的窗体已绑定成功 ！");
    	}
    
    	public void connect(String ip) {
    		this.IP = ip;
    		new Thread() {
    			public void run() {
    				try {
    					socket = new Socket(IP, 12345);
    					pw = new PrintWriter(new OutputStreamWriter(
    							socket.getOutputStream()));
    
    					br = new BufferedReader(new InputStreamReader(
    							socket.getInputStream()));
    					String line;
    					while ((line = br.readLine()) != null) {
    						mw.AppendText("收到  ：" + line);
    					}
    					pw.close();
    					br.close();
    
    					pw = null;
    					br = null;				
    				}catch (UnknownHostException e) {
    					// TODO Auto-generated catch block
    					e.printStackTrace();
    				} catch (IOException e) {
    					// TODO Auto-generated catch block
    					e.printStackTrace();
    				}
    			}
    		}.start();
    	}
    
    	public void send(String str) {
    		if (pw != null) {
    			pw.write(str + "\n");// 有 \n 才能有 输出的刷新
    			pw.flush();
    		} else {
    			mw.AppendText("send 连接中断！");
    		}
    	}
    
    	public static void main(String[] args) {
    		// TODO Auto-generated method stub
    
    	}
    
    }

实现步骤

> 1. 开启服务器端程序；
> 
> 2. 开启客户端程序；
> 
> 3. 连接网络地址和网络端口；
> 
> 4. 输入聊天内容，实现聊天。