POST to controller: Having a controller read named elements in a post.

I know a rest controller can have the @RequestBody of a form get processed via Castor to a POJO in a controller. I do that today.

For Example:

Code:

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@RequestMapping(value="/create", method=RequestMethod.POST)
public ResponseEntity<?> createItem(@RequestBody Item item){

---

However I could not find a way to do that if the post has key-value pairs, like in the following HTML.
Is there an annotation in a controller I can use to have the "textPayload" read and processed as a POJO?

HTML Code:

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<form action="http://localhost:8080/materials-restservice/ccc/content/create" method="POST">
          <textarea name="textPayload">
<?xml version="1.0" encoding="UTF-8"?>
          <studynet>
      <item>
        <name>Person</name>
        <price>10.23</price>
      </item>
</studynet>


          </textarea>
          <input type="submit"/>
</form>

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