Socket网络编程练习题三：客户端上传文件到服务器

Love The Way You Lie 2024-02-29 01:46 85阅读 0赞

## 题目 ##

*  客户端：将本地文件上传到服务器，接收服务器的反馈
 *  服务端：接收客户端上传的文件，上传完毕之后给出反馈

## 代码实战 ##

#### 1、客户端代码 ####

package com.heima;
    
    import java.io.*;
    import java.net.Socket;
    
    public class Client {
        
        public static void main(String[] args) throws IOException {
        
            Socket socket = new Socket("127.0.0.1",10000);
    
            //读取本地文件中的数据，并写到服务器中
            BufferedInputStream bis = new BufferedInputStream(new FileInputStream("G:\\wjkwk\\clientdir\\123.jpg"));
            BufferedOutputStream bos = new BufferedOutputStream(socket.getOutputStream());
            byte[] bytes = new byte[1024];
            int len;
            while ((len = bis.read(bytes)) != -1){
        
                bos.write(bytes,0,len);
            }
    
            //往服务器写结束标记
            socket.shutdownOutput();
    
            //接收服务器返回的数据
            BufferedReader br = new BufferedReader(new InputStreamReader(socket.getInputStream()));
            String line = br.readLine();
            System.out.println(line);
            socket.close();
        }
    }

#### 2、服务端代码 ####

package com.heima;
    
    import java.io.*;
    import java.net.ServerSocket;
    import java.net.Socket;
    import java.util.UUID;
    
    public class Server {
        
    
        public static void main(String[] args) throws IOException {
        
    
            ServerSocket serverSocket = new ServerSocket(10000);
            //等待客户端来连接
            Socket socket = serverSocket.accept();
            //读取客户端上传的文件并保存到本地
            BufferedInputStream bis = new BufferedInputStream(socket.getInputStream());
            String name = UUID.randomUUID().toString().replace("-", "");
            BufferedOutputStream bos = new BufferedOutputStream(new FileOutputStream("G:\\wjkwk\\serverdir\\"+name+".jpg"));
            int len;
            byte[] bytes = new byte[1024];
            while ((len = bis.read(bytes)) != -1){
        
                bos.write(bytes,0,len);
            }
            //回写数据
            BufferedWriter bw = new BufferedWriter(new OutputStreamWriter(socket.getOutputStream()));
            bw.write("上传成功");
            bw.newLine();
            bw.flush();
    
            //释放资源
            socket.close();
            serverSocket.close();
        }
    }

#### 3、运行结果 ####

![在这里插入图片描述][50bcb192f52b4b7fb267f8a5ef7ad996.png]

[50bcb192f52b4b7fb267f8a5ef7ad996.png]: https://image.dandelioncloud.cn/pgy_files/images/2024/02/29/9d74b07e7ff4496ea0a1d3f6f12c26cb.png