title: spring3 mvc @Valid annotation cannot be found
body: <p>I try to use @Valid annotation, but eclipse always gives the "Valid cannot be resolved to a type" error. I m using the spring3 library. </p>
  
  <p>I have imported hibernate-validator-4.1.0.Final.jar into my WEB-INF/lib directory. however, this does not solve the problem.</p>
  
  <p>Any help is appreciated! </p>