java基础——TCP网络编程实现文件的上传

Posted 2021-09-07 名字真的很急用

直接上代码：

import java.io.BufferedInputStream;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.net.InetAddress;
import java.net.Socket;




public class 文件发送 {

	public static void main(String[] args) throws IOException, IOException {
		// TODO Auto-generated method stub
          //创建客户端
		Socket socket = new Socket(InetAddress.getByName("127.0.0.1"),8888);
		//获取本地IO流
		OutputStream outputStream = socket.getOutputStream();
		//输入流 来获取要输出的流
		BufferedInputStream buffer = new BufferedInputStream(new FileInputStream("d:\\\\aaa\\\\1.jpg"));
		
		int leng =0;
		byte data[] = new byte[1024];
		
		while((leng=buffer.read(data))!=-1) {
			outputStream.write(data, 0, leng);
		}
		socket.shutdownOutput();
		//接收服务器端反馈的消息
		InputStream inputStream = socket.getInputStream();
		byte [] arr= new byte[1024];
		int read =inputStream.read(arr);
		System.out.println(new String(arr,0,read));
		
		buffer.close();
		outputStream.close();
		socket.close();
		inputStream.close();
	}

}

import java.io.BufferedOutputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.net.ServerSocket;
import java.net.Socket;

public class 文件上传 {

	public static void main(String[] args) throws IOException {
		// TODO Auto-generated method stub

		
		//TCP来回接收数据
		
		ServerSocket socket = new ServerSocket(8888);
		
		//侦听方法
		Socket accept =socket.accept();
		//获取输入流
		InputStream inputStream = accept.getInputStream();
		
		//本程序操作硬盘
		BufferedOutputStream buffer = new BufferedOutputStream(new FileOutputStream("d:\\\\bbb\\\\2.jpg"));
		byte [] data = new byte[1024];
		//读写操作
		int leng=0;
		while((leng=inputStream.read(data))!=-1) {
			buffer.write(data, 0, leng);
		}
		
		//告诉客户端写完了
		OutputStream out = accept.getOutputStream();
		out.write("over".getBytes());
		
		//关流
		buffer.close();
		inputStream.close();
		accept.close();
		out.close();
	}

}

重点看注释！！！！