How are people developing for the Google App Engine?

[Alex146 (Alex Mair)]

In the Vaadin HOWTO it is detailed that:
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Even though Google App Engine development environment is able to run your app locally, the execution environment differs a lot from the the real deployment environment.

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Firstly I’m having problems running by app locally, has anyone written any documentation on how to do this. In eclipse I am presently trying, right click project > debug as > web application. Unfortunately I’m getting an error,
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javax.servlet.ServletException: No UIProvider returned a UI for the request.

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when trying to interact with the project in the browser. Are other people having success in offline development of a GAE project, and if so how, or are you just deploying the the GAE each time with nothing offline?

[Nicholas4 (Nicholas Zhu)]

@Alex Mair

In the Vaadin HOWTO it is detailed that:
[font=Courier New]

Even though Google App Engine development environment is able to run your app locally, the execution environment differs a lot from the the real deployment environment.

[/font]
Firstly I’m having problems running by app locally, has anyone written any documentation on how to do this. In eclipse I am presently trying, right click project > debug as > web application. Unfortunately I’m getting an error,
[font=Courier New]

javax.servlet.ServletException: No UIProvider returned a UI for the request.

[/font]
when trying to interact with the project in the browser. Are other people having success in offline development of a GAE project, and if so how, or are you just deploying the the GAE each time with nothing offline?

NO, every one has this problem as well.

[Jonathan1 (Jonathan Nash)]

This issue is discussed in more detail in this thread:
https://vaadin.com/forum#!/thread/2931024