Spring MVC with Hibernate Validator Mandatory for the database field, but not in the application

Question

Problem with BindingResult hasErrors() in validation. I have this code:

@RequestMapping(value = "/entity", params = "form", method = RequestMethod.POST)
  public String submit(@Valid @ModelAttribute Entity entity, BindingResult result) {
  Authentication auth = SecurityContextHolder.getContext().getAuthentication();
  entity.setCreatedBy(auth.getName());
  if (result.hasErrors()) {
     //Here the error of createdBy is null
     return "entity/new";
  } else {
     entityService.save(entity);
     return "redirect:/entity/list";
  }
}

the entity class:

@Entity
@Table(name = "TABLE_X")
public class Entity implements Serializable {
   private static final long serialVersionUID = 1L;
   @Id
   @NotNull
   @Column(name = "primary_key")
   private String primaryKey;
   @NotNull
   @Column(name = "created_by")
   private String createdBy;
   //getters and setter
}

I need set the value of createdBy in controller but always show "may not be null" in view. Please help.

Spring MVC 4, Hibernate Validator 5, Database Oracle 11g

Could you please provide more details? You can set the value in controller and you can always show message on view, so what's the problem? — Maxim Kolesnikov
– Maxim Kolesnikov, Commented Dec 25, 2013 at 6:40
The BindingResult not know of entity.setCreatedBy(auth.getName()); and result.hasErrors() is true, so the object Entity is not saved. — jmct_x
– jmct_x, Commented Dec 25, 2013 at 6:47

Alexey · Accepted Answer · 2013-12-25 06:45:31Z

2

You entity object is validated before Spring MVC invokes the submit() method. The result object is created at the same time. This line:

entity.setCreatedBy(auth.getName());

has absolutely no effect on the outcome of result.hasErrors().

answered Dec 25, 2013 at 6:45

Alexey

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1 Comment

Alexey Over a year ago

Why do you need to validate the createdBy field if it is not a user input (but a value supplied by your code)? You could remove @NotNull from createdBy.

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