ptimson :
I have tried a number of examples from the net and cannot get Spring to validate my query string parameter. It doesn't seem execute the REGEX / fail.
package my.controller;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.RestController;
import javax.validation.Valid;
import javax.validation.constraints.Pattern;
import static org.springframework.web.bind.annotation.RequestMethod.GET;
@RestController
public class MyController {
private static final String VALIDATION_REGEX = "^[0-9]+(,[0-9]+)*$";
@RequestMapping(value = "/my/{id}", method = GET)
public myResonseObject getMyParams(@PathVariable("id") String id,
@Valid @Pattern(regexp = VALIDATION_REGEX)
@RequestParam(value = "myparam", required = true) String myParam) {
// Do Stuff!
}
}
Current behaviour
PASS - /my/1?myparam=1
PASS - /my/1?myparam=1,2,3
PASS - /my/1?myparam=
PASS - /my/1?myparam=1,bob
Desired behaviour
PASS - /my/1?myparam=1
PASS - /my/1?myparam=1,2,3
FAIL - /my/1?myparam=
FAIL - /my/1?myparam=1,bob
Thanks
Jaiwo99 :
You need add @Validated to your class like this:
@RestController
@Validated
class Controller {
// ...
}
UPDATE:
you need to configure it properly.. add this bean to your context:
@Bean
public MethodValidationPostProcessor methodValidationPostProcessor() {
return new MethodValidationPostProcessor();
}
Example to handle exception:
@ControllerAdvice
@Component
public class GlobalExceptionHandler {
@ExceptionHandler
@ResponseBody
@ResponseStatus(HttpStatus.BAD_REQUEST)
public Map handle(MethodArgumentNotValidException exception) {
return error(exception.getBindingResult().getFieldErrors()
.stream()
.map(FieldError::getDefaultMessage)
.collect(Collectors.toList()));
}
@ExceptionHandler
@ResponseBody
@ResponseStatus(HttpStatus.BAD_REQUEST)
public Map handle(ConstraintViolationException exception) {
return error(exception.getConstraintViolations()
.stream()
.map(ConstraintViolation::getMessage)
.collect(Collectors.toList()));
}
private Map error(Object message) {
return Collections.singletonMap("error", message);
}
}
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