title: Submit data as JsonNode
body: <p>I have a springboot application. I want to have a REST method that takes JsonNode as an argument! But When I try to submit a html form it gives below error...</p>
  
  <p>Failed to instantiate [com.fasterxml.jackson.databind.JsonNode]: Is it an abstract class?; nested exception is java.lang.InstantiationException</p>
  
  <p>Below is my rest method in controller.</p>
  
  <pre><code>@RequestMapping(value = "/action", method = RequestMethod.POST,             
                  produces = MediaType.APPLICATION_JSON, 
                  consumes = MediaType.APPLICATION_FORM_URLENCODED)
  public String action(JsonNode data) {
  </code></pre>
  
  <p>Thank you </p>