title: HttpServletRequest get JSON POST data
body: <p>I am HTTP POST-ing to URL http://laptop:8080/apollo/services/rpc?cmd=execute</p>
  <p>with
  POST data</p>
  <pre class="lang-json prettyprint-override"><code>{ &quot;jsondata&quot; : &quot;data&quot; }
  </code></pre>
  <p>Http request has Content-Type of <code>application/json; charset=UTF-8</code></p>
  <p>How do I get the POST data (jsondata) from HttpServletRequest?</p>
  <p>If I enumerate the request params, I can only see one param,
  which is &quot;cmd&quot;, not the POST data.</p>