TCP传输过程复制文件

/*
需求：上传图片

*/

/*
客户端：
1、建立服务
2、读取客户端已有数据
3、通过socket输出流，将数据发送到服务端
4、通过socket读取流，读取服务端返回信息
*/
import java.io.*;
import java.net.*;
import java.lang.Exception;
class  PicClient
{
	public static void main(String[] args) throws Exception
	{
		Socket s = new Socket("222.49.250.147",10001);

		FileInputStream fis = new FileInputStream("C:\1.jpg");
		OutputStream os = s.getOutputStream();
		byte[] buf =new byte[1024];
		int len = 0;
		while((len = fis.read(buf)) != -1)
		{
			os.write(buf,0,len);
		}

		//告诉服务端读入完毕
		s.shutdownOutput();

		//读取服务器端返回
		InputStream is = s.getInputStream();
		byte [] bufin = new byte[1024];
		int num = is.read(bufin);
		System.out.println(new String(buf,0,num));
		fis.close();
		s.close();
	}
}

class PicServer
{
	public static void main(String [] args) throws Exception
	{
		ServerSocket ss = new ServerSocket(10001);
		Socket s =ss.accept();
		String ip = s.getInetAddress().getHostAddress();
		System.out.println(ip + "connected");
		InputStream is = s.getInputStream();
		FileOutputStream fos = new FileOutputStream("D:\10.png");
		byte[] buf =new byte[1024];
		int len = 0;
		while((len = is.read(buf)) != -1)
		{
			fos.write(buf,0,len);
		}

		//将信息返回给客户端
		OutputStream os = s.getOutputStream();
		os.write("上传成功".getBytes());
		is.close();
		fos.close();
		os.close();
	}
}