spring validation annotations being ignored when using custom validator
I am trying to incorporate annotated validation rules along with some custom validation. I have a details entity which looks like the following:
public class DetailsEntity {
@NotEmpty(message = "Name is required")
private String name;
private String customField;
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getCustomField() {
return customField;
}
public void setCustomField(String customField) {
this.customField = customField;
}
}
I then have a controller that looks like this:
@Controller
public class EntityController {
@RequestMapping(value = "/create", method = RequestMethod.POST)
public @ResponseBody DetailsEntity create(@RequestBody @Valid
DetailsEntity details) {
//Do some creation work
}
}
This all works great out of the box. The problem is when I try to use a custom validator along with my entity. My validator looks like this:
@Component
public class EntityValidator implements Validator {
@Override
public boolean supports(Class<?> aClass) {
return aClass.isAssignableFrom(DetailsEntity.class);
}
@Override
public void validate(Object o, Errors errors) {
DetailsEntity entity = (DetailsEntity) o;
if (entity.getCustomField().equals("Some bad value")) {
errors.reject("Bad custom value supplied");
}
}
}
I've tried injecting my validator two ways. One is using the @InitBinder in the controller, and the other is setting a global validator in the spring configuration ( <mvc:annotation-driven validator="entityValidator" /> ). Either way I do it, the custom validator works fine, but my @NotEmpty annotation gets ignored. How can I use both the annotations as well as a custom validator?
Use SpringValidatorAdapter as base class of your custom validator and override validate() method:
public void validate(Object target, Errors errors) {
// check JSR-303 Constraints
super.validate(target, errors);
// Add you custom validation here.
}
Or inject a LocalValidationFactoryBean in you custom validator and call to validate(target, errors) before or after your custom validation.
@NotEmpty is a JSR-303 annotation, and we need to use an implementation of it like HiberanteValidator, we need to add Hibernate-Validator jar to your lib directory. Using this jar we can use @NotEmpty, @NotNull...all JSR 303 annotations.
链接地址: http://www.djcxy.com/p/61092.html上一篇: 用于条件约束的弹簧验证