文件上传接口传参规范

单个文件上传

@RequestBody与文件类型参数不兼容：

org.springframework.web.HttpMediaTypeNotSupportedException: Content type 'multipart/form-data;

@PostMapping("/fileUpload")
public void method(@RequestBody @Validated FileMultipartUploadReqVO reqVO,
                   @RequestParam(value = "file") MultipartFile file) {}
//把@RequestBody去掉
@PostMapping("/fileUpload")
public void method(@Validated FileMultipartUploadReqVO reqVO,
                   @RequestParam(value = "file") MultipartFile file) {}

批量文件上传

@PostMapping("/fileUpload")
public void method(@Validated FileMultipartUploadReqVO reqVO,
                   @RequestParam(value = "fileList") List<MultipartFile> fileList) {}
//注意：前端此时批量上传时需要将fileList并列传到body的form-data中，并不是像后端一样放到一个集合中