CODEWITHSUNDEEP
javaspring-bootrest
Arefe
Arefe

Reputation: 12417

Update the response without null value

I have the following entities provided below,

@Entity(name = "Employee")
@Table(name = "employee")
@Data
@AllArgsConstructor
@NoArgsConstructor
public class Employee {


    @Id
    @GeneratedValue(strategy = GenerationType.AUTO)
    private Long id;

    @CreationTimestamp
    @Temporal(TemporalType.TIMESTAMP)
    @Column(name = "creation_on" ,updatable = false)
    private Date creationOn;

    @Column(name = "first_name")
    private String firstName;

    @Column(name = "last_name")
    private String lastName;

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

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

    @Column(name = "age")
    private Integer age;

    @Column(name = "state")
    @Enumerated(EnumType.STRING)
    private EmployeeStates employeeState;


    @OneToOne(cascade = CascadeType.ALL)
    @JoinColumn(name = "address_id", referencedColumnName = "id")
    private Address address;


}


@Data
@AllArgsConstructor
@NoArgsConstructor
@Entity(name = "address")
@Table(name = "address")
public class Address {


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


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

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

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

    @Column(name = "zip")
    private int zip;

    @OneToOne(mappedBy = "address")
    private Employee employee;

}

The POST call is provided below,

@PostMapping(value = "/create")
public ResponseEntity<Object> createEmployee(@Valid @RequestBody EmployeeDto employeeDto) {

    try{
        Employee employee = employeeService.createEmployee(employeeDto);

        if(employee != null){

            return new ResponseEntity<>(employee, new HttpHeaders(), HttpStatus.CREATED);
        }

        return new ResponseEntity<>(ApiResponseMessage.getGenericApiResponse(Boolean.FALSE, HttpStatus.UNPROCESSABLE_ENTITY,
            MessageConstant.EMPLOYEE_NOT_CREATE_MSG), new HttpHeaders(), HttpStatus.UNPROCESSABLE_ENTITY);
    }

    catch (Exception ex) {

        log.error(MessageConstant.INTERNAL_SERVER_ERROR_MSG + ex.getMessage());
        return new ResponseEntity<>(ApiResponseMessage.getInternalServerError(), new HttpHeaders(), HttpStatus.INTERNAL_SERVER_ERROR);
    }
}

When the response is coming, its below:

{
  "id": 2,
  "creationOn": "2021-02-27T15:05:23.585+00:00",
  "firstName": "string",
  "lastName": "string",
  "email": "string",
  "phoneNumber": "string",
  "age": 0,
  "employeeState": "ADDED",
  "address": {
    "id": 3,
    "street": "string",
    "state": "string",
    "country": "string",
    "zip": 0,
    "employee": null
  }
}

How do I not see the "employee": null in the response?

Upvotes: 1

Views: 59

Answers (2)

Arefe
Arefe

Reputation: 12417

I need to ignore JSON value from the child entity as below:

@OneToOne(mappedBy = "address")
@JsonIgnore
private Employee employee;

This makes all fine.

Upvotes: 0

SSK
SSK

Reputation: 3766

You need to use @JsonInclude(Include.NON_EMPTY) or @JsonInclude(Include.NON_NULL) on your Entity classes.

Like

@Entity(name = "Employee")
@Table(name = "employee")
@Data
@AllArgsConstructor
@NoArgsConstructor
@JsonInclude(Include.NON_EMPTY)
public class Employee {

}

@JsonInclude(Include.NON_EMPTY) - Value that indicates that only properties with null value,or what is considered empty, are not to be included.Definition of emptiness is data type specific; see belowfor details on actual handling.

@JsonInclude(Include.NON_NULL) - Value that indicates that only properties with non-nullvalues are to be included.

Upvotes: 1

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