package server;

import java.io.DataInputStream;

import java.io.File;

import java.io.FileOutputStream;

import java.net.ServerSocket;

import java.net.Socket;

public class FTPServer extends ServerSocket{

private static final int PORT = 2013;

private ServerSocket server;

private Socket client;

private DataInputStream dis;

private FileOutputStream fos;

public FTPServer() throws Exception{

try{

server = new ServerSocket(PORT);

while(true){

client = server.accept();

dis = new DataInputStream(client.getInputStream());

String fileName = dis.readUTF();

long fileLength = dis.readLong();

fos = new FileOutputStream(new File("E:\\"+fileName));

byte[] sendBytes = new byte[1024];

int transLen = 0;

System.out.println("------ Start to receive files <" + fileName+">, the size of the file is <"+fileLength+"> ------");

while(true){

int read = 0;

read = dis.read(sendBytes);

if(read == -1)

break;

transLen += read;

System.out.println("The process of receving file <" + fileName+"> is " + 100.0*transLen/fileLength + "% ...");

fos.write(sendBytes, 0, read);

fos.flush();

}

System.out.println("------ Receive file <"+fileName+"> successfully ---------");

client.close();

}

}catch(Exception e){

e.printStackTrace();

}finally{

if(dis != null){

dis.close();

}

if(fos != null){

fos.close();

}

server.close();

}

}

public static void main(String[] args) throws Exception{

new FTPServer();

}

}