Java spring boot，POJO 中的 Lombok 用于响应实体主体

Question

I create an object for default error response body for API. So I create my class, i declare constructor and params and I add @Getter and @Setter from lombok.

@Getter
@Setter
public class ResponseError {
    private Date timestamp;
    private int status;
    private int code;
    private String message;
    
    public ResponseError(Date timestamp, int status, int code, String message) {
        this.timestamp = timestamp;
        this.status = status;
        this.code = code;
        this.message = message;
    }   
}

When i initiate the object in body response of ResponseEntity, i got this error on building :

No converter found for return value of type: class com.example.api.controller.response.ResponseError

And if i create manually getter and setter in my class, it is working. I thought that Lombok do this for me, don't it ?

Answer 1

@Getter / @Setter should be applied to a field.
This should be your code

public class ResponseError {

    @Getter
    @Setter
    private Date timestamp;

    @Getter
    @Setter
    private int status;

    @Getter
    @Setter
    private int code;

    @Getter
    @Setter
    private String message;
}

Event better solution for class level, would be to use @Data annotation.

It generates getters for all fields, a useful .toString method, and .hashCode and .equals implementations that check all non-transient fields. It will also generate setters for all non-final fields, as well as a constructor. It is equivalent to having all annotations: @Getter @Setter @RequiredArgsConstructor @ToString @EqualsAndHashCode

If you wish to use @Data , your code would be.

@Data
public class ResponseError {
    private Date timestamp;
    private int status;
    private int code;
    private String message;
}

Answer 2

• Update/install Lombok plugin for Idea
• Enable annotation process for Idea
• Enable annotation process for plugin