google-app-engine - App Engine missing

Question

When I open my Eclipse, sometimes it shows App Engine is missing and I get several app engine errors. Why is it like I have to remove and add the app engine libraries again and again? CAn u find the solution?

Answer 1

检查您是否使用最新版本的应用程序引擎。如果您使用的是旧版本，请移至新版本 1.7.3 并检查。