sencha touch《实现ajax跨域请求》

Ext.Ajax.request({
url:'http://10.228.190.97:9000/login'+"/"+userName+"/"+password,
useDefaultXhrHeader : false,
success: function(result, request) {
var respText =  Ext.JSON.decode(result.responseText);
alert(respText.email);
}
});

@With(CorsAction.class)
public class UserController extends Controller{
@Transactional
public static Result login(String _dc, String username, String userpwd) {
Contact contact = Contact.login(username, userpwd);
return ok(parser(contact));
}
}

public class CorsAction extends Action.Simple {
public Promise<SimpleResult> call(Context context) throws Throwable{
Response response = context.response();
response.setHeader("Access-Control-Allow-Origin", "*");
response.setHeader("Access-Control-Allow-Headers","X-Requested-With");
return delegate.call(context);
}
}