java实现文件的上传

客户端的代码实现：

package InetSocket.upfile;

import java.io.File;
import java.io.FileInputStream;
import java.io.OutputStream;
import java.net.InetAddress;
import java.net.Socket;

public class client {
    public static void main(String[] args) throws Exception {
        InetAddress byName = InetAddress.getByName("127.0.0.1");
        Socket socket = new Socket(byName,9991);
        OutputStream os = socket.getOutputStream();
        FileInputStream file = new FileInputStream(new File("src/1.jpg"));
        byte[] bytes = new byte[1024];
        int len;
        while((len=file.read(bytes))!=-1){
            os.write(bytes,0,len);
        }
        file.close();
        os.close();
        socket.close();
    }
}

服务器的代码实现：

package InetSocket.upfile;

import java.io.File;
import java.io.FileOutputStream;
import java.io.InputStream;
import java.net.ServerSocket;
import java.net.Socket;

public class upfileService {
    public static void main(String[] args) throws Exception {
        ServerSocket serverSocket = new ServerSocket(9991);
        Socket socket = serverSocket.accept();
        InputStream in = socket.getInputStream();
        FileOutputStream fos = new FileOutputStream(new File("src/1_1.jpg"));
        int len;
        byte[] bytes = new byte[1024];
        while((len=in.read(bytes))!=-1){
            fos.write(bytes,0,len);
        }
        fos.close();
        in.close();
        socket.close();
        serverSocket.close();
    }
}