ByPassing Google App Engine SDK to allow black listed classes

Is there a way to circumbent google app engine sdk to allow the usage of classes that are not present in the GAE JRE white list? I know the app that I would be building will not run in appspot, but at least in my developm开发者_如何学Pythonent server, I need to access a postgresql database(java.net.socket.*) and generate some files(java.io.FileWriter) in my development server.

Run your code in another servlet container, such as jetty.