How to autowire service in ConstraintValidator

Question

I\'m writting my application using Spring MVC. I want to validate is e-mail exists in database when user is registering. I\'ve written my own annotation constraint named

Answer 1

If your main code is working, then it should be straight forward to get your test working. You need to use @ContextConfiguration on your test class, see this for more details: http://docs.spring.io/spring/docs/3.2.x/spring-framework-reference/html/testing.html

In general, there are 2 ways to test this:

• unit test
• integration test

For unit test, you need to create an instance of the UniqueEmailValidator and set a UserService on that instance (normally a mock UserServer).

For integration test, you need to have the spring context initialized as I mentioned above.

Answer 2

Don't you have a Validator configured in your bean context. If you are bootstrapping Validator via Validation.buildDefaultValidatorFactory(); you are bypassing the Spring mechanism and you get a Validator which is not aware of Spring beans and components. Hence injection is not working. In your test you want to get hold of the Spring provided Validator.

Answer 3

You can call injection all @Autowired service:

@Override
public void initialize(UniqueEmail uniqueEmail) {
   org.springframework.web.context.support.SpringBeanAutowiringSupport.processInjectionBasedOnCurrentContext(this);
}