TCP文件上传

TCP文件上传

服务器端:

  1. 确定接收地址--端口
  2. 监听连接 accept
  3. 获取输入流
  4. 将输入流写入文件输出流
  5. 通知客户端已完成接收
  6. 关闭资源

客户端:

  1. 建立连接 socket
  2. 读取文件流
  3. 将文件流写入socket输出流
  4. 结束输出流 shutdownOutput
  5. 等待客户端完成接收
  6. 关闭资源

服务器端:

package com.example.network;

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 TcpServerDemo02 {
    public static void main(String[] args) throws IOException {
        // 传输文件 从客户端发出,服务器端接收
        // 建立链接地址
        ServerSocket serverSocket = new ServerSocket(9000);

        // 监听连接
        Socket socket = serverSocket.accept();

        // 获取输入流
        InputStream is = socket.getInputStream();

        // 输入流写入文件
        FileOutputStream fos = new FileOutputStream("receive.jpg");
        byte[] buffer = new byte[1024];
        int len;
        while ((len = (is.read(buffer))) != -1) {
            fos.write(buffer, 0, len);
        }

        // 通知客户端已获取完毕
        OutputStream outputStream = socket.getOutputStream();
        outputStream.write("接收完毕".getBytes());
        
        // 关闭资源
        fos.close();
        is.close();
        socket.close();
        serverSocket.close();
    }
}

客户端:

package com.example.network;

import java.io.ByteArrayOutputStream;
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 TcpClientDemo02 {
    public static void main(String[] args) throws IOException {
        // 传输文件 从客户端发出,服务器端接收
        // 获取ip
        InetAddress serverIp = InetAddress.getByName("127.0.0.1");
        // 创建连接
        Socket socket = new Socket(serverIp, 9000);
        OutputStream os = socket.getOutputStream();

        // 文件流写入输出流
        FileInputStream fis = new FileInputStream("200829121036-11425.jpg");
        byte[] buffer = new byte[1024];
        int len;
        while ((len = (fis.read(buffer))) != -1) {
            os.write(buffer, 0, len);
        }
        // 告诉服务端已发送完成
        socket.shutdownOutput();

        // 如果客户端获取完毕,才能关闭资源
        InputStream is = socket.getInputStream();

        ByteArrayOutputStream baos = new ByteArrayOutputStream();
        byte[] buffer2 = new byte[1024];
        int len1;
        while ((len1 = is.read(buffer2)) != -1) {
            baos.write(buffer2, 0, len1);
            System.out.println(baos);
        }

        // 关闭资源
        fis.close();
        os.close();
        socket.close();
    }
}
posted @ 2021-11-18 10:33  Oh,mydream!  阅读(35)  评论(0编辑  收藏  举报