如何使用 Java 制作一个向单个客户端显示消息的套接字

问题描述

如何使用 Java 制作一个向单个客户端显示消息的套接字?

解决方案

以下示例演示了如何借助 Socket 类的 ssock.accept() 方法制作一个向单个客户端显示消息的套接字。

import java.io.PrintStream;
import java.net.ServerSocket;
import java.net.Socket;

public class BeerServer {
   public static void main(String args[]) throws Exception {
      ServerSocket ssock = new ServerSocket(1234);
      System.out.println("Listening");
      Socket sock = ssock.accept();
      ssock.close(); 
      PrintStream ps = new PrintStream(sock.getOutputStream());
      
      for (int i = 10; i >= 0; i--) {
         ps.println(i + " from Java Source and Support.");
      }
      ps.close();
      sock.close();
   }
}

结果

上述代码示例将产生以下结果。

Listening
10 from Java Source and Support
9 from Java Source and Support
8 from Java Source and Support
7 from Java Source and Support
6 from Java Source and Support
5 from Java Source and Support
4 from Java Source and Support
3 from Java Source and Support
2 from Java Source and Support
1 from Java Source and Support
0 from Java Source and Support