Spring Boot 白魔法

Spring Boot解决了什么问题

Spring Boot如何实现

When a class doesn’t include a package declaration it is considered to be in the “default package”. The use of the “default package” is generally discouraged, and should be avoided. It can cause particular problems for Spring Boot applications that use @ComponentScan, @EntityScan or @SpringBootApplicationannotations, since every class from every jar, will be read.