SpringBoot如何将Multipart和JSON上载到DTO上呢?

实现思路:
    1.定义接收Multipart对象的实体
	2.定义表单
	3.设置相应的Controller接收对象信息

//定义包装类 
public class DataWrapper {
    private MultipartFile file;
    private String title;
    private String note;
}

//前端html页面
<form method="POST" enctype="multipart/form-data" id="fileUploadForm" action="link">
    <input type="text" name="title"/><br/>
    <input type="text" name="note"/><br/><br/>
    <input type="file" name="file"/><br/><br/>
    <input type="submit" value="Submit" id="btnSubmit"/>
</form>

//定义接收表单的text数据和multipart文件
@PostMapping("/api/upload/multi/model")
public ResponseEntity<?> multiUploadFileModel(@ModelAttribute FormWrapper model) {
    try {
        // Save as you want as per requiremens
        saveUploadedFile(model.getImage());
        formRepo.save(mode.getTitle(), model.getDescription());
    } catch (IOException e) {
        return new ResponseEntity<>(HttpStatus.BAD_REQUEST);
    }

    return new ResponseEntity("Successfully uploaded!", HttpStatus.OK);
}

//定义保存方法file
private void saveUploadedFile(MultipartFile file) throws IOException {
    if (!file.isEmpty()) {
        byte[] bytes = file.getBytes();
        Path path = Paths.get(UPLOADED_FOLDER + file.getOriginalFilename());
        Files.write(path, bytes);
    }
}