java实现TCP文件上传

朴灿烈づ我的快乐病毒、 2023-09-30 11:23 125阅读 0赞

### 对于TCP文件上传 ###

> 客户端上传文件，通过文件输出流输出，然后在服务端读取文件，并返回一个响应接收完毕的信息，客户端收到后关闭服务。

上传该文件:  
![在这里插入图片描述][watermark_type_d3F5LXplbmhlaQ_shadow_50_text_Q1NETiBA5p2o5p-Q5Lq655qE5b-r5LmQ5a2m5Lmg5pel6K6w_size_6_color_FFFFFF_t_70_g_se_x_16]  
**客户端:**

public class Client_upload {
        
    
        public static void main(String[] args) {
        
            Socket socket=null;
            OutputStream outputStream=null;
            FileInputStream fileInputStream=null;
            InputStream inputStream=null;
            try {
        
                //1.创建socket连接，连接到哪台服务器
              socket = new Socket(InetAddress.getByName("127.0.0.1"), 9999);
                //2.创建输出流
                 outputStream = socket.getOutputStream();
                //3.创建文件输入流读取文件
                fileInputStream = new FileInputStream(new File("E:\\JAVA进阶复习\\网络编程\\kaiying.jpg"));
                //4.先读取文件，然后通过输出流发送出去
                int len;
                byte[] bytes=new byte[1024];
                while ((len=fileInputStream.read(bytes))!=-1){
        
                    outputStream.write(bytes,0,len);
                }
                //发送完毕后，断开输出流
                socket.shutdownOutput();
                //接收服务端传来的接收完毕请求,确保服务端正确接收成功
                inputStream = socket.getInputStream();
                byte[] bytes1 = new byte[1024];
                int len2;
                while ((len2=inputStream.read(bytes1))!=-1){
        
                    String s = new String(bytes1, 0, len2);
                    System.out.println(s);
                }
    
    
            } catch (IOException e) {
        
                e.printStackTrace();
            }finally {
        
                try {
        
                    inputStream.close();
                    fileInputStream.close();
                    outputStream.close();
                    socket.close();
                } catch (Exception e) {
        
                    e.printStackTrace();
                }
            }
        }
    }

`服务端`:

public class Server_upload {
        
    
        public static void main(String[] args) {
        
            ServerSocket serverSocket=null;
            Socket accept=null;
            InputStream inputStream=null;
            FileOutputStream fileOutputStream=null;
            OutputStream outputStream=null;
            try {
        
                //1.创建ServerSocket对象
               serverSocket = new ServerSocket(9999);
                //2.监听客户端的连接，连接成功就返回一个socket对象
                 accept = serverSocket.accept();
                //3.读取客户端传来的数据
                 inputStream = accept.getInputStream();
                 int len;
                byte[] bytes = new byte[1024];
                //4.创建一个文件输出流，获取到的文件用我们自定义的文件名称来表达(接收的数据，更名为kaiying_copy.jpg)
               fileOutputStream = new FileOutputStream(new File("kaiying_copy.jpg"));
                while ((len=inputStream.read(bytes))!=-1){
        
                    fileOutputStream.write(bytes,0,len);
                }
    
                //接收完毕后，给客户端响应一个数据，告诉他已经接收完毕了
                 outputStream = accept.getOutputStream();
               outputStream.write("我发送完毕了".getBytes());
    
    
            } catch (Exception e) {
        
                e.printStackTrace();
            }finally {
        
                try {
        
                    outputStream.close();
                    fileOutputStream.close();
                    inputStream.close();
                    accept.close();
                    serverSocket.close();
                } catch (Exception e) {
        
                    e.printStackTrace();
                }
    
    
            }
    
        }
    }

![在这里插入图片描述][watermark_type_d3F5LXplbmhlaQ_shadow_50_text_Q1NETiBA5p2o5p-Q5Lq655qE5b-r5LmQ5a2m5Lmg5pel6K6w_size_20_color_FFFFFF_t_70_g_se_x_16]

[watermark_type_d3F5LXplbmhlaQ_shadow_50_text_Q1NETiBA5p2o5p-Q5Lq655qE5b-r5LmQ5a2m5Lmg5pel6K6w_size_6_color_FFFFFF_t_70_g_se_x_16]: https://img-blog.csdnimg.cn/3216da20c079432d8b8be42ca7ebda82.png?x-oss-process=image/watermark,type_d3F5LXplbmhlaQ,shadow_50,text_Q1NETiBA5p2o5p-Q5Lq655qE5b-r5LmQ5a2m5Lmg5pel6K6w,size_6,color_FFFFFF,t_70,g_se,x_16
[watermark_type_d3F5LXplbmhlaQ_shadow_50_text_Q1NETiBA5p2o5p-Q5Lq655qE5b-r5LmQ5a2m5Lmg5pel6K6w_size_20_color_FFFFFF_t_70_g_se_x_16]: https://img-blog.csdnimg.cn/24dc7cb892ad46b5bcf70f29c9852ab4.png?x-oss-process=image/watermark,type_d3F5LXplbmhlaQ,shadow_50,text_Q1NETiBA5p2o5p-Q5Lq655qE5b-r5LmQ5a2m5Lmg5pel6K6w,size_20,color_FFFFFF,t_70,g_se,x_16