JAVA中Socket服务器/客户端的通信

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Socket服务器/客户端的通信

（简易）

服务端：接收客户端发来的消息

客户端：接收键盘输入向服务端发送消息

功能简易，其他功能原理相同，只是提供给小代码框架提供出参考

客户端：

<span style="font-size:18px;">package com.cr.bean;import java.io.BufferedReader;import java.io.DataInputStream;import java.io.DataOutputStream;import java.io.InputStreamReader;import java.net.InetAddress;import java.net.InetSocketAddress;import java.net.Socket;import java.util.Scanner;public class client001 {@SuppressWarnings("resource")public static void main(String []args){Scanner scanner = new Scanner(System.in);Socket mysocket = null;DataInputStream in = null;DataOutputStream out = null;try {mysocket = new Socket();System.out.println("请输入服务器IP：");String IP = scanner.nextLine();System.out.println("请输入端口号：");int port = scanner.nextInt();if(mysocket.isConnected()){}else{//连接服务器，使用多线程技术InetAddress address = InetAddress.getByName(IP);InetSocketAddress socketAddress = new InetSocketAddress(address,port);mysocket.connect(socketAddress);System.out.println(socketAddress.toString());in = new DataInputStream(mysocket.getInputStream());out = new DataOutputStream(mysocket.getOutputStream());}} catch (Exception e) {System.out.print("服务器连接已断开"+e);}while(true){String str = null;try { str = scanner.nextLine();out.writeUTF(str);} catch (Exception e) {System.exit(0);}}}}</span><span style="color:#ff0000;"></span>

服务端：

<span style="font-size:18px;">package com.cr.bean;import java.io.DataInputStream;import java.io.DataOutputStream;import java.io.IOException;import java.net.InetAddress;import java.net.InetSocketAddress;import java.net.ServerSocket;import java.net.Socket;public class serve001 {@SuppressWarnings("resource")public static void main(String[] args){ServerSocket server = null;Socket you = null;while(true){try {server = new ServerSocket(7777);} catch (IOException e) {System.out.println("正在监听……");}try {you = server.accept();System.out.println("客户的地址："+you.getInetAddress());} catch (IOException e) {System.out.println("正在等待客户");}if(you!=null){new ServerThread(you).start();//为每个客户启动一个专门的线程}}}}class ServerThread extends Thread{Socket socket;DataOutputStream out = null;DataInputStream in = null;String s = null;ServerThread(Socket t){socket = t;try {out = new DataOutputStream(socket.getOutputStream());in = new DataInputStream(socket.getInputStream());} catch (Exception e) {e.printStackTrace();}}@Overridepublic void run() {try {while(true){String str = in.readUTF();System.out.println("客户端发送给服务器说："+str);}} catch (Exception e) {System.out.println("客户离开");}}}</span><span style="font-size:32px;font-weight: bold;"></span>

运行测试：

代码相对基础不给予讲解

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