对于put请求，Spring @ModelAttribute不映射请求

Question

我正在使用Spring Boot和JAX-RS。

我正在尝试将包含multipart/form-data文件的@ModelAttribute映射到PUT @CrossOrigin @RequestMapping(value = "/category/{courseCategoryId}", method = RequestMethod.PUT, produces = MediaType.APPLICATION_JSON_VALUE, consumes = MediaType.MULTIPART_FORM_DATA_VALUE) public ResponseEntity<?> updateCourseCategory( @PathVariable("courseCategoryId") long courseCategoryId, @ModelAttribute CourseCategory category) { // code } 请求，该请求不起作用。它没有映射任何字段。

@Entity
@Table(name = "course_category")
@JsonIdentityInfo(generator = ObjectIdGenerators.PropertyGenerator.class,
property  = "id",
scope     = Long.class)
@DynamicInsert(true)
@DynamicUpdate(true)
public class CourseCategory implements Serializable{

    private static final long serialVersionUID = -596261264681151471L;

    @Id
    @GeneratedValue(strategy = GenerationType.IDENTITY)
    @Column(name = "id")
    private Long id;

    @Column(name = "category")
    private String category;

    @Transient
    private MultipartFile imageFile;

    @Column(name = "image_url")
    private String imageUrl;

    @Column(name = "description", columnDefinition = "Text", length = 50000)
    private String description;

    @Column(name= "active", columnDefinition="tinyint(1) default 1")
    private boolean active = true;

    @OneToMany(cascade = CascadeType.ALL, mappedBy = "category")
    @LazyCollection(LazyCollectionOption.FALSE)
    private List<Courses> courses;


    public void setImageFile(MultipartFile imageFile) throws IOException {
        if(imageFile != null) {
            this.imageUrl = DefaultConfig.uploadFile(imageFile);
        }
        this.imageFile = null;
    }


    public void setCourses(List<Courses> courses) {
        courses.forEach(course -> course.setCategory(this));
        this.courses = courses;
    }

    // other getters and setters
}

CourseCategory.java

HttpServletRequest

我不想使用(select t.* from A t where t.b = :b).setParameter("b", "0123456789")是否有任何配置或方法可以使其处于工作状态。