杰克逊的@JsonView注释不起作用

Question

我用@JsonView注释了类User，当它返回时，我看到了所有字段，甚至是视图类中不包含的字段。这是我的班级

@Entity
@Table(name = "users")
public class User implements Serializable{
/**
 * 
 */
private static final long serialVersionUID = 1L;
@Id
@Column(name="id")
@GeneratedValue(strategy=GenerationType.AUTO)
private Long userID;
@JsonView(View.Summary.class)
@Column(name="email")
private String email;
@JsonView(View.Summary.class)
@Column(name="user_name")
private String firstName;
@JsonView(View.Summary.class)
@Column(name="user_last_name")
private String lastName;
@JsonView(View.Summary.class)
@Column(name="phone")
private String phone;
@JsonView(View.Summary.class)
@Column(name="origin")
private String address;
@JsonView(View.Summary.class)
@Column(name="birth_date")
private Long birthDate;
@JsonView(View.Summary.class)
@Column(name="gender")
private Long gender;
@JsonView(View.Summary.class)
@Column(name="about_me")
private String aboutMe;
@JsonView(View.SummaryWithPhoto.class)
@OneToOne(fetch = FetchType.EAGER)
@JoinColumn(name="photo")
private Photo avatar;
@JsonView(View.SummaryWithSession.class)
@Transient
private UserSession session;
//getters and setters

这是我的View类

public class View {
public interface Summary {}
public interface SummaryWithPhoto extends Summary {}
public interface SummaryWithSession extends SummaryWithPhoto {}
}

所以，然后我请求带有@JsonView(View.SummaryWithPhoto.class)注释的get方法，我总是得到userID字段，但不应该。这是端点代码

@JsonView(View.SummaryWithPhoto.class)
@RequestMapping(method = RequestMethod.GET)
public ResponseEntity<User> getUser(@RequestHeader(value="Access-key") String accessKey,
                                     @RequestHeader(value="Secret-key") String secretKey)

Answer 1

我花了一些时间调试同样的问题。结果是：

• 如果不更改此行为，则默认情况下会包括所有字段(请参见BeanSerializerFactory.processViews(。更改默认操作：

  ObjectMapper mapper = new ObjectMapper();
  mapper.disable(MapperFeature.DEFAULT_VIEW_INCLUSION);
  

• 字段，如果控制器方法注释有OTHER @JsonView(参见FilteredBeanPropertyWriter.serializeAsField(，则结果中省略@JsonView标记

因此，对于您的用例，不要更改默认设置，请用@JsonView注释Long userID，用任何其他(不相同(视图注释getUser。

代码comfasterxmljacksoncorejackson-databind2.8.4jackson-databind-2.8.4-sources.jar!comfasterxmljacksondatabindMapperFeature.java

   * Feature is enabled by default.
   */
   DEFAULT_VIEW_INCLUSION(true)

与博客相矛盾https://spring.io/blog/2014/12/02/latest-jackson-integration-improvements-in-spring，所以我必须仔细查看代码。