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最新推荐文章于 2025-12-01 13:00:08 发布

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文章标签：

#Socket #Java #多线程 #.net #C

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本文介绍了一个简单的Java网络编程实例，包括服务器端和客户端的代码实现。服务器端采用单线程和多线程两种方式处理客户端请求，客户端则发送消息到服务器并接收反馈。通过这个例子，读者可以了解到如何建立网络连接、进行数据交换，并掌握多线程处理的基本方法。

服务器端：

package com.dvte.boss.utils;

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

public class Server {
public static void main(String[] args) throws IOException {
    ServerSocket server = new ServerSocket(5678);
    while (true) {
      Socket client = server.accept();
      BufferedReader in = new BufferedReader(new InputStreamReader(client
          .getInputStream()));
      PrintWriter out = new PrintWriter(client.getOutputStream());
      while (true) {
        String str = in.readLine();
        System.out.println(str);
        out.println("has receive....");
        out.flush();
        if (str.equals("end"))
          break;
      }
      client.close();
    }
}
}

这个服务器端可以实现多个client的访问，但是同步的，当一个client取得跟服务器的连接以后，其它的client就只能等待。要解决这个问题可以用线程的方式实现

客户端：

package com.dvte.boss.utils;
import java.net.*;

import java.io.*;

public class Client {
static Socket server;
public static void main(String[] args) throws Exception {
    server = new Socket(InetAddress.getLocalHost(), 5678);
    BufferedReader in = new BufferedReader(new InputStreamReader(server
        .getInputStream()));
    PrintWriter out = new PrintWriter(server.getOutputStream());
    BufferedReader wt = new BufferedReader(new InputStreamReader(System.in));
    while (true) {
      String str = wt.readLine();
      out.println(str);
      out.flush();
      if (str.equals("end")) {
        break;
      }
      System.out.println(in.readLine());
    }
    server.close();
}
}

以下是多线程的方式实现服务端：

package com.dvte.boss.utils;
import java.net.*;
import java.io.*;
public class ThreadServer extends Thread {
private Socket client;
public ThreadServer(Socket c) {
    this.client = c;
}
public void run() {
    try {
      BufferedReader in = new BufferedReader(new InputStreamReader(client
          .getInputStream()));
      PrintWriter out = new PrintWriter(client.getOutputStream());
      while (true) {
        String str = in.readLine();
        System.out.println(str);
        out.println("has receive....");
        out.flush();
        if (str.equals("end"))
          break;
      }
      client.close();
    }
    catch (IOException ex) {
    }
    finally {
    }
}
public static void main(String[] args) throws IOException {
    ServerSocket server = new ServerSocket(5678);
    while (true) {
      ThreadServer mu = new ThreadServer(server.accept());
      mu.start();
    }
}
}