Validation

See equivalent in the Reactive stack

By default, if Bean Validation is present on the classpath (for example, Hibernate Validator), the LocalValidatorFactoryBean is registered as a global Validator for use with @Valid and @Validated on controller method arguments.

You can customize the global Validator instance, as the following example shows:

Java
Kotlin
Xml

@Configuration
public class WebConfiguration implements WebMvcConfigurer {

	@Override
	public Validator getValidator() {
		Validator validator = new OptionalValidatorFactoryBean();
		// ...
		return validator;
	}
}

@Configuration
class WebConfiguration : WebMvcConfigurer {

	override fun getValidator(): Validator {
		val validator = OptionalValidatorFactoryBean()
		// ...
		return validator
	}
}

<mvc:annotation-driven validator="globalValidator"/>

Note that you can also register Validator implementations locally, as the following example shows:

Java
Kotlin

@Controller
public class MyController {

	@InitBinder
	public void initBinder(WebDataBinder binder) {
		binder.addValidators(new FooValidator());
	}
}

@Controller
class MyController {

	@InitBinder
	fun initBinder(binder: WebDataBinder) {
		binder.addValidators(FooValidator())
	}
}

If you need to have a LocalValidatorFactoryBean injected somewhere, create a bean and mark it with @Primary in order to avoid conflict with the one declared in the MVC configuration.