Java Socket实现简易聊天室

Java-Socket编程实现简易聊天室（TCP），供大家参考，具体内容如下

实现一个服务器接收多个客户端

测试：

首先启动服务器，然后启动三个客户端，输入三个不同的用户名，分别在聊天室发消息看其他客户端是否能接收到消息

效果如下图：

一号发消息

可以在二号和三号客户端接收到消息

服务器设计

import java.io.BufferedReader;import java.io.IOException;import java.io.InputStreamReader;import java.io.PrintWriter;import java.net.ServerSocket;import java.net.Socket;import java.util.ArrayList;import java.util.List;import java.util.concurrent.ExecutorService;import java.util.concurrent.Executors;public class Server1 { static public List<Client> list = new ArrayList<Client>(); static ExecutorService cachedThreadPool = Executors.newCachedThreadPool(); public static void main(String[] args) { //创建一个ServerSocket监听端口 try (ServerSocket server = new ServerSocket(5678)) { while (true) { // 利用死循环不停的监听端口 Socket s = server.accept();// 利用Socket服务器的accept()方法获取客户端Socket对象。 addClient(s); } } catch (IOException e) { e.printStackTrace(); } } // 添加客户端 private static void addClient(Socket s) { String name; try { BufferedReader in = new BufferedReader(new InputStreamReader(s.getInputStream())); name = in.readLine(); Client c = new Client(name, s);// 创建客户端处理线程对象 System.out.println(name); list.add(c); cachedThreadPool.execute(c); } catch (IOException e) { e.printStackTrace(); } } static class Client implements Runnable { String name; // 客户端名字 Socket s = null; // 保存客户端Socket对象 BufferedReader in; PrintWriter out; Client(String name, Socket s) { this.s = s; this.name = name; try { in = new BufferedReader(new InputStreamReader(s.getInputStream())); out = new PrintWriter(s.getOutputStream()); } catch (IOException e) { // TODO Auto-generated catch block e.printStackTrace(); } } @Override public void run() { try { while (true) { String str = in.readLine(); for (int j = 0; j < list.size(); j++) { Server1.Client c = list.get(j); if (c != this) { System.out.println(str); c.send(str+'-|1|2|-'+name); } } if (str.equals('end')) break; } try { s.close(); } catch (IOException e) { // TODO Auto-generated catch block e.printStackTrace(); } } catch (IOException e1) { // TODO Auto-generated catch block e1.printStackTrace(); } } public void send(String str) throws IOException { out.println(str); out.flush(); } }}

客户端设计

import java.io.BufferedReader;import java.io.IOException;import java.io.InputStreamReader;import java.io.PrintWriter;import java.net.Socket;import java.util.Scanner;public class Client1 { public static String name = null; static Socket socket = null; static BufferedReader in; static PrintWriter out; public static void main(String[] args) { Scanner sc = new Scanner(System.in); System.out.print('输入用户名:>'); name = sc.nextLine(); try {// socket = new Socket('116.62.173.212', 5678); socket = new Socket('127.0.0.1', 5678); System.out.println(socket); System.out.println('已连接服务器>'); out = new PrintWriter(socket.getOutputStream()); in = new BufferedReader(new InputStreamReader(socket.getInputStream())); Thread receive = new Thread(new receiveThread()); receive.start(); out.println(name); out.flush(); String msg; while (true) {// System.out.print('你说:>'); msg = sc.nextLine(); out.println(msg); out.flush(); if (msg.equalsIgnoreCase('end')) break; } } catch (IOException e) { e.printStackTrace(); } } static class receiveThread implements Runnable{ @Override public void run() { try { while (socket!=null) { String str = in.readLine(); String message = str.split('-|1|2|-')[0]; String name = str.split('-|1|2|-')[1]; System.out.println(name + ':>' + message); } }catch(Exception e) { e.printStackTrace(); } } }}

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