title: passing JSON data to a Spring MVC controller
body: <p>I need to send a JSON string to Spring MVC controller.But I do not
   have any form bindings to it , I just need to send  a plain JSON data to Controller class.I am making jQuery AJAX call to the Controller method like the below code.</p>
  
  <pre><code>$.ajax ({
      url: "./save",
      type: "POST",
      data: JSON.stringify(array),
      dataType: "json",
      contentType: "application/json; charset=utf-8",
      success: function(){
          alert("success ");
      }
  });
  </code></pre>
  
  <p>But how do I retrieve it in the Controller method?(Note: It is just plain JSON data and not a form submission).</p>