聊天室 java代码_java聊天室的实现代码

以下是一个基于 Java 实现的简单聊天室代码：

Server.java

import java.io.*;
import java.net.*;

public class Server {
   public static void main(String[] args) throws IOException {
      ServerSocket serverSocket = null;
      try {
         serverSocket = new ServerSocket(9000);
      } catch (IOException e) {
         System.err.println("Could not listen on port: 9000.");
         System.exit(1);
      }

      Socket clientSocket = null;
      try {
         System.out.println("Waiting for client...");
         clientSocket = serverSocket.accept();
         System.out.println("Client connected: " + clientSocket);
      } catch (IOException e) {
         System.err.println("Accept failed.");
         System.exit(1);
      }

      PrintWriter out = new PrintWriter(clientSocket.getOutputStream(), true);
      BufferedReader in = new BufferedReader(new InputStreamReader(clientSocket.getInputStream()));

      String inputLine, outputLine;
      outputLine = "Welcome to the Chat Room!"; // Welcome message
      out.println(outputLine);

      while ((inputLine = in.readLine()) != null) {
         System.out.println("Client message: " + inputLine);
         out.println(inputLine);
         if (inputLine.equals("Bye."))
            break;
      }

      out.close();
      in.close();
      clientSocket.close();
      serverSocket.close();
   }
}

Client.java

import java.io.*;
import java.net.*;

public class Client {
   public static void main(String[] args) throws IOException {

      Socket clientSocket = null;
      PrintWriter out = null;
      BufferedReader in = null;

      try {
         clientSocket = new Socket("localhost", 9000);
         out = new PrintWriter(clientSocket.getOutputStream(), true);
         in = new BufferedReader(new InputStreamReader(clientSocket.getInputStream()));
      } catch (UnknownHostException e) {
         System.err.println("Don't know about host: localhost.");
         System.exit(1);
      } catch (IOException e) {
         System.err.println("Couldn't get I/O for the connection to: localhost.");
         System.exit(1);
      }

      BufferedReader stdIn = new BufferedReader(new InputStreamReader(System.in));
      String userInput;

      while ((userInput = stdIn.readLine()) != null) {
         out.println(userInput);
         System.out.println("Server message: " + in.readLine());
         if (userInput.equals("Bye."))
            break;
      }

      out.close();
      in.close();
      stdIn.close();
      clientSocket.close();
   }
}

这只是一个简单的实现，如果需要实现更复杂的聊天功能，还需要进行更多的开发工作。