使用tcp连接

客户端

java">package net.upload;

import java.io.BufferedReader;
import java.io.File;
import java.io.FileReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.PrintWriter;
import java.net.Socket;
import java.net.UnknownHostException;

public class Client {

	public static void main(String[] args) throws UnknownHostException, IOException {
		System.out.println("upload...");
		
		File file = new File("c:\\client.txt");
		//要和客户端一致
		Socket socket = new Socket("10.1.35.73",10007);
		
		BufferedReader bufr = new BufferedReader(new FileReader(file));
		
		PrintWriter pw = new PrintWriter(socket.getOutputStream(), true);
		
		String line = null;
		while((line=bufr.readLine())!=null){
			pw.println(line);
		}
		//告诉服务端客户端写完了
		socket.shutdownOutput();
		
		BufferedReader bufin = new BufferedReader(new InputStreamReader(socket.getInputStream()));
		
		String str = bufin.readLine();
		System.out.println(str);
		
		bufr.close();
		socket.close();
	}

}

服务端

java">package net.upload;

import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.FileWriter;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.PrintWriter;
import java.net.ServerSocket;
import java.net.Socket;

public class Server {

	public static void main(String[] args) throws IOException {
		System.out.println("上传中....");
		ServerSocket socket= new ServerSocket(10007);
		Socket s = socket.accept();
		BufferedReader bufin = new BufferedReader(new InputStreamReader(s.getInputStream()));
		
		BufferedWriter bw = new BufferedWriter(new FileWriter("c:\\server.txt"));
		
		String line = null;
		while((line=bufin.readLine())!=null){
			bw.write(line);
			bw.newLine();
			bw.flush();
		}
		
		PrintWriter pw = new PrintWriter(s.getOutputStream(), true);
		//打给客户端
		pw.println("上传成功");
		
		bw.close();
		s.close();
		socket.close();
	}

}