Java基础知识强化之网络编程笔记13：TCP之TCP协议上传图片并给出反馈

1. TCP协议上传图片并给出反馈：

（1）客户端：

 package cn.itcast_13;

 import java.io.BufferedInputStream;
 import java.io.BufferedOutputStream;
 import java.io.FileInputStream;
 import java.io.IOException;
 import java.io.InputStream;
 import java.net.Socket;

 public class UploadClient {
     public static void main(String[] args) throws IOException {
         // 创建客户端Socket对象
         Socket s = new Socket("192.168.12.92", 19191);

         // 封装图片文件
         BufferedInputStream bis = new BufferedInputStream(new FileInputStream(
                 "林青霞.jpg"));
         // 封装通道内的流
         BufferedOutputStream bos = new BufferedOutputStream(s.getOutputStream());

         byte[] bys = new byte[1024];
         int len = 0;
         while ((len = bis.read(bys)) != -1) {
             bos.write(bys, 0, len);
             bos.flush();
         }

         s.shutdownOutput();

         // 读取反馈
         InputStream is = s.getInputStream();
         byte[] bys2 = new byte[1024];
         int len2 = is.read(bys2);
         String client = new String(bys2, 0, len2);
         System.out.println(client);

         // 释放资源
         bis.close();
         s.close();
     }
 }

（2）服务端：

 package cn.itcast_13;

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

 public class UploadServer {
     public static void main(String[] args) throws IOException {
         // 创建服务器Socket对象
         ServerSocket ss = new ServerSocket(19191);

         // 监听客户端连接
         Socket s = ss.accept();

         // 封装通道内流
         BufferedInputStream bis = new BufferedInputStream(s.getInputStream());
         // 封装图片文件
         BufferedOutputStream bos = new BufferedOutputStream(
                 new FileOutputStream("mn.jpg"));

         byte[] bys = new byte[1024];
         int len = 0;
         while ((len = bis.read(bys)) != -1) {
             bos.write(bys, 0, len);
             bos.flush();
         }

         // 给一个反馈
         OutputStream os = s.getOutputStream();
         os.write("图片上传成功".getBytes());

         bos.close();
         s.close();
     }
 }