IDEA Error: The main class could not be found or could not be loaded

2018/1/24 Update

For the initial use of idea may not be very good, single import projects, need to wait for a while, do not worry about the program (PS: Network bad time)

Because the general Spring boot project needs to download, or cache dependencies,, wait, the lower right below the progress bar, no movement, the main class no error, in the test,

If it's still an error, think about other issues.

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A spring boot project was downloaded, and when the idea was imported, there was always coverage,

Later, after entering the project, it appeared main instead of the project name, and later ran out of

Baidu a bit, there is no better answer, later in project structure, saw Modul-"path

There are two, a startup entry that belongs to the original project, a main and then delete main, you can run,

When running, a warning may appear, continue