title: Get HttpServletRequest in JSR-303 Bean Validation
body: <p>I have a validation in my application that uses cookies (request.getCookies) to validate a captcha code.</p>
  
  <p>I want to create a ConstraintValidator for this captcha validation, so it is validated alongside the other bean's attributes - as specified by JSR-303 Bean Validation.</p>
  
  <p>Is there a way to retrieve the HttpServletRequest in a ConstraintValidator?</p>