Postman 上傳 multipartfile

1.需求描述

通過postman上傳一張png圖片（其他文件也可），服務端保存到指定目錄

簡單定義前端入參

​ 文件使用 file 字段存儲

​ 文件別稱 name 存儲

2.Postman端

1. 切換到body
2. 選擇form-data
3. 修改file類型為file
4. 選擇待上傳文件

3.后端代碼

1. 后端model使用MultipartFile

   @Data
   @AllArgsConstructor
   @NoArgsConstructor
   class BaseFile implements Serializable {
       private String name;
       private MultipartFile file;
   }
   

2. 后端controller (為了代碼演示，這里直接在controller保存文件)

   @PostMapping("/upload")
   public void uploadFile(BaseFile baseFile) throws IOException {
       MultipartFile file = baseFile.getFile();
       String name = baseFile.getName();
   
       String originalFilename = file.getOriginalFilename();
       long size = file.getSize();
       byte[] bytes = file.getBytes();
       String contentType = file.getContentType();
       Resource resource = file.getResource();
   
       System.out.println(originalFilename);
       System.out.println(size);
       System.out.println(contentType);
   
       InputStream inputStream = file.getInputStream();
       FileOutputStream fileOutputStream = new FileOutputStream(UploadConfig.path + originalFilename);
       byte[] buffer = new byte[1024];
       int len;
       while (-1 != (len = inputStream.read(buffer))) {
           fileOutputStream.write(buffer, 0, len);
       }
       fileOutputStream.flush();
       fileOutputStream.close();
   }