Java Bean验证：是否可以指定运行时验证？

Question

I am maintaining a web app that is using Java bean validations (as part of JSR303 I believe).

Members are mapped with annotations like @Pattern and then we have a LocalValidatorFactoryBean that performs the validation. The Validator that this factory bean bootstraps is actually the Hibernate validation instance.

My problem is that my @Pattern regex needs to be loaded at runtime when my application starts up, so I cannot use the annotation.

Therefore, I'm wondering if there is an alternative way such as XML to plug in such validation?

If not, I may just have to use a separate Spring validator to do this work

Answer 1

I recommend creating custom validator as described in http://docs.spring.io/spring/docs/3.0.0.RC3/reference/html/ch05s07.html#validation.beanvalidation.spring.constraints . Thus you will need to check the value agains the pattern in the code of constraint validator class.

Answer 2

You can configure bean validation using XML for such a thing. The syntax is a lot like the JavaBean XML format and maps rather well to the hierarchical structure of the equivalent Java syntax.