socketsserverfile.java~29~

jbuilder2006一书的所有源代码

package sockets;

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

public class SocketsServerFile {

  public static void main(String[] args) throws IOException {
    //声明客户端读入类
    InputStream clientInputStream = null;
    //创建新文件newDemo.jpg
    FileOutputStream fileOutputStream = new FileOutputStream("newDemo.jpg");
    //创建服务接口
    ServerSocket serverSocket = null;
    try {
      //应用端口2223
      serverSocket = new ServerSocket(2223);
    } catch (IOException e) {
      e.printStackTrace();
      System.exit(0);
    }
    System.out.println("成功创建2223端口的服务器.");
    //创建Socket的客户接口,当有客户端的程序访问该服务接口时激活该类
    Socket clientSocket = null;
    try {
      //通过accept()方法使服务器与客户端的Socket接口建立联系
      clientSocket = serverSocket.accept();
    } catch (IOException e) {
      e.printStackTrace();
      System.exit(0);
    }
    //取得客户端的读入类
    clientInputStream = clientSocket.getInputStream();
    //读入客户端信息
    int c;
    while ( (c = clientInputStream.read()) != -1) {
      //使用write()方法向文件写入信息
      fileOutputStream.write(c);
    }
    System.out.println("服务端完成文件的传送.");
    //关闭客户端的读入器
    clientInputStream.close();
    //关闭文件写出类
    fileOutputStream.close();
    //关闭客户端接口
    clientSocket.close();
    //关闭服务端接口
    serverSocket.close();
  }
}