title: Spring MVC 3 Validation - Unable to find a default provider
body: <p>I get an error when trying to set up Spring MVC validation.</p>
  
  <pre><code>javax.validation.ValidationException: Unable to find a default provider
  </code></pre>
  
  <p>I read in the documents that the default provider they use is the hibernate-validator.  Do I need to include this library to get validation to work?  Is it okay to include this library even though i'm not using hibernate for my project?</p>