Spring In IDEA， could not find org.springframework.cache.annotation.EnableCachingIntegrationTests.DummyFooRepository

Hi, I am new to Spring Framework compilation, and after I import Spring source code into IDEA, there are some errors.

for example,

as the above photo shows, IDEA could not find class org.springframework.cache.annotation.EnableCachingIntegrationTests.DummyFooRepository， and as you can see, the class is here.

And I guess， there is something wrong in my IDEA config, but could not locate the wrong config.

So, could you help me with that.

Comment From: rstoyanchev

Thanks for getting in touch, but it feels like this is a question that would be better suited to Stack Overflow. As mentioned in the guidelines for contributing, we prefer to use the issue tracker only for bugs and enhancements. Feel free to update this issue with a link to the re-posted question (so that other people can find it) or add some more details if you feel this is a genuine bug.

Please, be sure to check Build from Source wiki page and follow the link to import into IntelliJ. There are some peculiarities and limitations with IntelliJ so be sure to follow those steps closely.