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spring mvc nested model validation

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梦毁少年i
梦毁少年i 2020-12-18 10:01

I have two models : User,Project

public class Project{
    private int id;
    @NotEmpty(message=\"Project Name can not be empty\")
    private
4条回答
  • 北海茫月
    北海茫月 (楼主)
    2020-12-18 10:48

    I did what Jerome Dalbert suggested and in addition added a custom BeanValidator for delegating the actual work of validating to a JSR 303 implementation.

    The prefix is used to denote the path of the property in the form.

    @Component
public class BeanValidator implements org.springframework.validation.Validator, InitializingBean {    

 private Validator validator;
 public void afterPropertiesSet() throws Exception {
  ValidatorFactory validatorFactory = Validation.buildDefaultValidatorFactory();
  validator = validatorFactory.usingContext().getValidator();
 }

 public boolean supports(Class clazz) {
  return true;
 }

 public void validate(Object target, Errors errors, String prefix) {
  Set> constraintViolations = validator.validate(target);
  for (ConstraintViolation constraintViolation : constraintViolations) {
   String propertyPath = constraintViolation.getPropertyPath().toString();
   String message = constraintViolation.getMessage();
   errors.rejectValue(prefix + "." + propertyPath, "", message);
  }
 }

 public void validate(Object target, Errors errors) {
  validate(target, errors, "");
 }
}



    and here how I used it in the UserValidator:
    


    @Component
public class UserValidator implements Validator {

 @Autowired
 BeanValidator beanValidator;

 @Override
 public boolean supports(Class clazz) {
  return User.class.equals(clazz);
 }

 @Override
 public void validate(Object target, Errors errors) {
  User user = (User) target;
  beanValidator.validate(user.getAddress(), errors, "address");
 }
}

    


    References:
    


      

    • http://blog.trifork.com/2009/08/04/bean-validation-integrating-jsr-303-with-spring/
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