ftpserver.java

实现ftp代理服务器的基本功能

package jftp;												//打包
import java.net.*;
import sun.net.ftp.*;

public class FtpServer extends Thread {						//继承线程
    public static final int FTP_PORT = 8000; 					// 默认端口
    ServerSocket ftpsocket = null;

    public static void main(String[] args) {
        /*if(args.length!=1) {
            System.out.println("Usage:");
            System.out.println("java FtpServer [root dir]");
            System.out.println("nExample:");
            System.out.println("java FtpServer C:\\ftp");
            return;
        }*/
       // FtpConnection.root = args[0];

       FtpConnection.root="c:\\ftp";						//共享目录
        System.out.println("[info] ftp server root: " + FtpConnection.root);
        new FtpServer().start();							//启动线程
    }	

    public void run() {										//重写RUN方法，创建多线程
        Socket client = null;
        try {
            ftpsocket = new ServerSocket(FTP_PORT);			//等待客户请求的服务器套接字
            System.out.println("[info] listening port: " + FTP_PORT);
            for(;;) {										//无限循环，等客户端连接
                client = ftpsocket.accept();
                new FtpConnection(client).start();
            }
        }
        catch(Exception e) {System.out.println("error");}//{ e.printStackTrace(); }
    }
}