title: Way to serialize a GWT client side object into a String and deserialize on the server?
body: <p>Currently our application uses GWT-RPC for most client-server communication.  Where this breaks down is when we need to auto generate images.  We generate images based on dozens of parameters so what we do is build large complex urls and via a get request retrieve the dynamically built image.</p>
  
  <p>If we could find a way to serialize Java objects in gwt client code and deserialize it on the server side we could make our urls much easier to work with.  Instead of</p>
  
  <pre><code>http://host/page?param1=a&amp;param2=b&amp;param3=c....
  </code></pre>
  
  <p>we could have</p>
  
  <pre><code>http://host/page?object=?JSON/XML/Something Magicical
  </code></pre>
  
  <p>and on the server just have</p>
  
  <pre><code>new MagicDeserializer.(request.getParameter("object"),AwesomeClass.class);
  </code></pre>
  
  <p>I do not care what the intermediate format is json/xml/whatever I just really want to be able stop keeping track of manually marshalling/unmarshalling parameters in my gwt client code as well as servlets.</p>