I have written an AbstractCRUDController class and have a getById method as shown below
public abstract class AbstractCRUDController<ENTITY extends BaseEntity, POSTDTO extends BaseDTO, PATCHDTO extends BaseDTO, RESPONSEDTO extends BaseDTO> {
private AbstractCRUDApi<ENTITY, POSTDTO, PATCHDTO, RESPONSEDTO> restApi;
private AbstractApiResponseDTOConverter<RESPONSEDTO> apiResponseDTOConverter;
public static final String SUCCESS = "SUCCESS";
public AbstractCRUDController(
AbstractCRUDApi<ENTITY, POSTDTO, PATCHDTO, RESPONSEDTO> restApi,
AbstractApiResponseDTOConverter<RESPONSEDTO> apiResponseDTOConverter) {
this.restApi = restApi;
this.apiResponseDTOConverter = apiResponseDTOConverter;
}
@GetMapping("/{id}")
public ResponseEntity<ApiResponseDTO> getById(
@Valid
@PathVariable(name = "id")
@IsNumberValidatorConstraint String id){
Long convertedId = Long.parseLong(id);
RESPONSEDTO filteredResource = this.restApi.findById(convertedId);
ResponseEntity<ApiResponseDTO> response = this.apiResponseDTOConverter
.convertToApiResponse(SUCCESS, filteredResource, HttpStatus.OK, null, null);
return response;
}
}
This will be extended by ProjectController and other controller implementations so that by default all the controllers will have the GET mapping (as below)
@Validated
@RestController
@RequestMapping("/api/projects")
public class ProjectController extends AbstractCRUDController<Project, ProjectPostDTO, ProjectPatchDTO, ProjectResponseDTO> {
private ProjectApi projectApi;
private ProjectApiResponseDTOConverter projectApiResponseDTOConverter;
@Autowired
public ProjectController(final ProjectApi projectApi,
final ProjectApiResponseDTOConverter projectApiResponseDTOConverter) {
super(projectApi, projectApiResponseDTOConverter);
this.projectApi = projectApi;
this.projectApiResponseDTOConverter = projectApiResponseDTOConverter;
}
}
When the GET mapping is hit it is working as expected.
But when the id is not a number my custom validator (@IsNumberValidatorConstraint) kicks in and gives the default message(input is not a number as shown below)
But I want the message changed depending on whether I search for a project, a customer or any other entity. For example "Project id is invalid" or "Customer id is invalid".
Is there any way how I can achieve this?
Cheers
Edited
Below is my validator code
import com.theravado.custom.annotation.IsNumberValidatorConstraint;
import org.apache.commons.lang3.math.NumberUtils;
import javax.validation.ConstraintValidator;
import javax.validation.ConstraintValidatorContext;
public class IsNumberValidator implements ConstraintValidator<IsNumberValidatorConstraint, String> {
@Override
public boolean isValid(String number, ConstraintValidatorContext cxt) {
return NumberUtils.isParsable(number);
}
}
The annotation is below
@Documented
@Target({ElementType.METHOD, ElementType.FIELD, ElementType.PARAMETER})
@Retention(RetentionPolicy.RUNTIME)
@Constraint(validatedBy = IsNumberValidator.class)
public @interface IsNumberValidatorConstraint {
String message() default "input is not a number";
Class<?>[] groups() default {};
Class<? extends Payload>[] payload() default {};
}
