title: spring mvc & hibernate validator: valid json
body: <p>I'd like to check if my input parameter is a valid json. it can be anything: map, string, number etc. is there some ready to use hibernate validator for this?</p>
  
  <p>to make it more clear, i'm looking for something similar to, for example, <code>@Email</code>. Is there any annotation like <code>@Json</code>?</p>