作者:云天 链接：https://www.cnblogs.com/tqlin/p/11687811.html一、启动注解 @SpringBootApplication@Target(ElementType.TYPE)@Retention(RetentionPolicy.RUNTIME)@Documented@Inherited@SpringBootConfiguration@EnableAutoConfiguration@ComponentScan(excludeFilters = { @Filter(type = FilterType.CUSTOM, classes = TypeExcludeFilter.class), @Filter(type = FilterType.CUSTOM, classes = AutoConfigurationExcludeFilter.class) })public @interface SpringBootApplication { }查看源码可发现，@SpringBootApplication是一个复合注解，包含了@SpringBootConfiguration，@EnableAutoConfiguration`，@ComponentScan`这三个注解``@SpringBootConfiguration注解，继承@Configuration注解，主要用于加载配置文件@SpringBootConfiguration继承自@Configuration`，二者功能也一致，标注当前类是配置类， 并会将当前类内声明的一个或多个以@
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