422 Unprocessable Entity on Restlet ClientProxy and GAE Server
问题 I have a Front-end application on a separate domain that is communicating with the Restlet backend on a different domain. So far, CORS work properly and the only issue is the bean serialization. As I check the request it has this Accept type: application/x-java-serialized-object+gwt However for some reason I don't know when the backend runs on localhost my GWT app works fine in sending/receiving data to/from the backend (at localhost), but when the backend is deployed in GAE cloud (i.e.