@PathVariable Validation in Spring 4

Question

How can i validate my path variable in spring. I want to validate id field, since its only single field i do not want to move to a Pojo

@RestController
publi         


        

Answer 1

To archive this goal I have apply this workaround for getting a response message equals to a real Validator:

@GetMapping("/check/email/{email:" + Constants.LOGIN_REGEX + "}")
@Timed
public ResponseEntity isValidEmail(@Email @PathVariable(value = "email") String email) {
    return userService.getUserByEmail(email).map(user -> {
        Problem problem = Problem.builder()
            .withType(ErrorConstants.CONSTRAINT_VIOLATION_TYPE)
            .withTitle("Method argument not valid")
            .withStatus(Status.BAD_REQUEST)
            .with("message", ErrorConstants.ERR_VALIDATION)
            .with("fieldErrors", Arrays.asList(new FieldErrorVM("", "isValidEmail.email", "not unique")))
            .build();
        return new ResponseEntity(problem, HttpStatus.BAD_REQUEST);
    }).orElse(
        new ResponseEntity(new UtilsValidatorResponse(EMAIL_VALIDA), HttpStatus.OK)
    );
}