Socket编程基础之服务端与客户端简单通信

灰太狼 2022-08-09 02:11 190阅读 0赞

服务端代码如下：

/**
     * 
     */
    package com.baoxiu123.net;
    
    import java.io.BufferedReader;
    import java.io.BufferedWriter;
    import java.io.IOException;
    import java.io.InputStreamReader;
    import java.io.OutputStreamWriter;
    import java.net.ServerSocket;
    import java.net.Socket;
    
    /**
     * @author ping
     * @createtime 2015-10-4下午11:49:15
     * @function 服务端
     */
    public class MySocketServer {
    
    	private int serverPort;
    	private ServerSocket serverSocket;
    	private Socket socket;
    
    	public static void main(String[] args) {
    		MySocketServer socketServer = new MySocketServer();
    		socketServer.start();
    	}
    
    	private void start() {
    		serverPort = 9898;
    		try {
    			serverSocket = new ServerSocket(serverPort);
    			System.out.println("server started...");
    			while (true) {
    				socket = serverSocket.accept();
    				manageConection(socket);
    			}
    		} catch (IOException e) {
    			e.printStackTrace();
    		} finally {
    			try {
    				socket.close();
    				serverSocket.close();
    			} catch (IOException e) {
    				e.printStackTrace();
    			}
    		}
    
    	}
    
    	private void manageConection(Socket socket) {
    		new Thread(new Runnable() {
    			private BufferedReader reader;
    			private BufferedWriter writer;
    
    			@Override
    			public void run() {
    				System.out.println("client :" + socket.hashCode() + "  connedted" + " remote port:" + socket.getPort());
    				try {
    					reader = new BufferedReader(new InputStreamReader(socket.getInputStream()));
    					writer = new BufferedWriter(new OutputStreamWriter(socket.getOutputStream()));
    					String receivedMsg;
    					while ((receivedMsg = reader.readLine()) != null) {
    						System.out.println("client " + socket.hashCode() + "   :" + receivedMsg);
    						writer.write("server reply:" + receivedMsg + "\n");
    						writer.flush();
    					}
    				} catch (IOException e) {
    					e.printStackTrace();
    				} finally {
    					try {
    						reader.close();
    						writer.close();
    					} catch (IOException e) {
    						e.printStackTrace();
    					}
    				}
    
    			}
    		}).start();
    	}
    
    }

客户端代码如下：

/**
     * 
     */
    package com.test.net;
    
    import java.io.BufferedReader;
    import java.io.BufferedWriter;
    import java.io.IOException;
    import java.io.InputStreamReader;
    import java.io.OutputStreamWriter;
    import java.net.Socket;
    
    /**
     * @author ping
     * @createtime 2015-10-4下午11:49:15
     * @function 客户端
     */
    public class MySocketClient {
    	private String serverIp = "127.0.0.1";
    	private int serverPort = 9898;
    	private Socket socket;
    	private BufferedWriter writer;
    	private BufferedReader inputReader;
    	private BufferedReader reader;
    
    	public static void main(String[] args) {
    		MySocketClient socketClient = new MySocketClient();
    		socketClient.start();
    	}
    
    	private void start() {
    		try {
    			socket = new Socket(serverIp, serverPort);
    			System.out
    					.println("connected at " + serverIp + "  server  port"
    							+ socket.getPort() + " local port:"
    							+ socket.getLocalPort());
    			reader = new BufferedReader(new InputStreamReader(
    					socket.getInputStream()));
    			writer = new BufferedWriter(new OutputStreamWriter(
    					socket.getOutputStream()));
    			startServerReplyListener(reader);
    			inputReader = new BufferedReader(new InputStreamReader(System.in));
    			String inputString;
    			while (!(inputString = inputReader.readLine()).equals("bye")) {
    				writer.write(inputString + "\n");
    				writer.flush();
    			}
    		} catch (Exception e) {
    			e.printStackTrace();
    		} finally {
    			try {
    				socket.close();
    				writer.close();
    				reader.close();
    				inputReader.close();
    			} catch (IOException e) {
    				e.printStackTrace();
    			}
    
    		}
    	}
    
    	private void startServerReplyListener(final BufferedReader reader) {
    		new Thread(new Runnable() {
    			public void run() {
    				String replyStr;
    				try {
    					while ((replyStr = reader.readLine()) != null) {
    						System.out.println(replyStr);
    					}
    				} catch (IOException e) {
    					e.printStackTrace();
    				}
    			}
    		}).start();
    	}
    }

自己运行起来，并在客户端发一条消息，截图如下：

先是服务端开启：  
![Center][]

其次是客户端截图如下：

![Center 1][]

[Center]: /images/20220731/dd309a1f0f0c4659a2ac6be4df0df406.png
[Center 1]: /images/20220731/a445c0dc560140d5bf483cacfb13db44.png