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 客户端：

package com.itheima.b03TCPTest3;

import java.io.*;
import java.net.InetAddress;
import java.net.Socket;
import java.net.UnknownHostException;

public class Client {
    public static void main(String[] args) throws IOException {
        System.out.println("===客户端启动===");
        //1、创建socket通信管道 请求连接
        Socket socket = new Socket(InetAddress.getLocalHost(),10001);
        //2、本地IO流将数据输入到内存 使用缓冲流 快
        FileInputStream fis = new FileInputStream("/Users/wangjia/Desktop/CS/计算机网络/clientdir/面试算法.png");
        BufferedInputStream bfr = new BufferedInputStream(fis);
        //3、网络IO流将数据从内存传到网络服务端 字节流输出 所以要通过字节数组按照字节大小逐一传输
        OutputStream os = socket.getOutputStream();
        BufferedOutputStream bos = new BufferedOutputStream(os);
        int len;
        byte[] bytes = new byte[1024];
        while((len = bfr.read(bytes)) != -1){
            bos.write(bytes,0,len);
        }
        //4、客户端通知服务器数据传输完毕 通过socket通信管道方法
        socket.shutdownOutput();

        //5、获取服务端反馈
        BufferedReader br = new BufferedReader(new InputStreamReader(socket.getInputStream()));
        String msg = br.readLine();
        System.out.println("服务端反馈信息：" + msg);

        //6、释放资源
        socket.close(); //socket关闭表示 撤销连接

服务端

package com.itheima.b03TCPTest3;

import java.io.*;
import java.net.InetAddress;
import java.net.Socket;
import java.net.UnknownHostException;

public class Client {
    public static void main(String[] args) throws IOException {
        System.out.println("===客户端启动===");
        //1、创建socket通信管道 请求连接
        Socket socket = new Socket(InetAddress.getLocalHost(),10001);
        //2、本地IO流将数据输入到内存 使用缓冲流 快
        FileInputStream fis = new FileInputStream("/Users/wangjia/Desktop/CS/计算机网络/clientdir/面试算法.png");
        BufferedInputStream bfr = new BufferedInputStream(fis);
        //3、网络IO流将数据从内存传到网络服务端 字节流输出 所以要通过字节数组按照字节大小逐一传输
        OutputStream os = socket.getOutputStream();
        BufferedOutputStream bos = new BufferedOutputStream(os);
        int len;
        byte[] bytes = new byte[1024];
        while((len = bfr.read(bytes)) != -1){
            bos.write(bytes,0,len);
        }
        //4、客户端通知服务器数据传输完毕 通过socket通信管道方法
        socket.shutdownOutput();

        //5、获取服务端反馈
        BufferedReader br = new BufferedReader(new InputStreamReader(socket.getInputStream()));
        String msg = br.readLine();
        System.out.println("服务端反馈信息：" + msg);

        //6、释放资源
        socket.close(); //socket关闭表示 撤销连接