Java Socket實現簡易聊天室

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Java-Socket編程實現簡易聊天室（TCP），供大傢參考，具體內容如下

實現一個服務器接收多個客戶端

測試：

首先啟動服務器，然後啟動三個客戶端，輸入三個不同的用戶名，分別在聊天室發消息
看其他客戶端是否能接收到消息

效果如下圖：

一號發消息

可以在二號和三號客戶端接收到消息

服務器設計

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) {
  //創建一個ServerSocket監聽端口
  try (ServerSocket server = new ServerSocket(5678)) {

   while (true) {     // 利用死循環不停的監聽端口

    Socket s = server.accept();// 利用Socket服務器的accept()方法獲取客戶端Socket對象。
    addClient(s);

   }

  } catch (IOException e) {
   e.printStackTrace();
  }
 }

 // 添加客戶端
 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);// 創建客戶端處理線程對象
   System.out.println(name);
   list.add(c);

   cachedThreadPool.execute(c);

  } catch (IOException e) {
   e.printStackTrace();
  }
 }

 static class Client implements Runnable {

  String name;  // 客戶端名字
  Socket s = null; // 保存客戶端Socket對象

  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();
  }
 }
}

客戶端設計

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("輸入用戶名:>");
  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("已連接服務器>");

   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("你說:>");
    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();
   }
  }
 }
}

以上就是本文的全部內容，希望對大傢的學習有所幫助，也希望大傢多多支持WalkonNet。

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