title: trim all String values in JsonNode
body: <p>i need to trim all the String values</p>
  
  <pre><code>{   
     "startDate": "2015-06-29",
     "endDate": "2015-07-04",
      "category": "VIP ",
      "name": " govind",
      age: 10,
      "place": " goa "
  }                
  </code></pre>
  
  <p>i am doing it by</p>
  
  <pre><code>JsonNode json = request().body().asJson();
  CLassName cl = Json.fromJson(json , ClassName.class);
  </code></pre>
  
  <p>and trimming in setter of <code>ClassName</code></p>
  
  <p>suggest any other good approach because i know its not a good approach</p>