springboot测试时出现：java.lang.IllegalStateException: Unable to find a @SpringBootConfiguration, you need to use @ContextConfiguration or @SpringBootTest(classes=...) with your test
It's because I didn't write a springboot startup class in the root directory: write an App.class, and then run the test class to avoid this error.
My motto: No, I can learn; I fall behind, I can catch up; I fall, I can stand up; I will do it.