嵌套的异常是java.lang.NumberFormatException：用于输入字符串/用于弹簧启动的Multipart文件和json数据

Question

I have the POST request API call to accept the JSON body request parameters and multipart file from the client side. This is my method:

@PostMapping("/saveCategory")
    @ResponseStatus(HttpStatus.OK)
    public void createCategory( @RequestParam("file") MultipartFile file,@RequestParam("cateogry") CategoryModel category) {
        String fileName = fileStorageService.storeFile(file);

        String fileDownloadUri = ServletUriComponentsBuilder.fromCurrentContextPath().path("/downloadFile/")
                .path(fileName).toUriString();
        //category.setImage_path(fileName);

        //this.categoryRepository.save(category);

        // return new UploadFileResponse(fileName, fileDownloadUri,
        // file.getContentType(), file.getSize());

    }

I have this exception:

 "category_name": "ziska111"

    }'; nested exception is java.lang.NumberFormatException: For input string: "{"category_name":"ziska111"}"]

This is my Postman request:

I think I have a problem with my CategoryModel but I do not know why: This is my CategoryModel:

   @Entity
   @Table(name = "Category")
   @JsonIgnoreProperties({ "hibernateLazyInitializer", "handler" })
public class CategoryModel {
    @Id
    @Column(name = "id")
//@GeneratedValue(strategy = GenerationType.AUTO)
private Long id;

private String category_name;
private String category_description;
private String image_path;

@JsonIgnore
@OneToMany( mappedBy = "category")
private Set<ProductModel> category;
+Geterrs and Setters

Answer 1

您尝试将字符串转换为整数，但是输入字符串包含字母字符，并且无法转换为整数