SpringBoot@SpringBootApplication注解

#SpringBoot

📌 @SpringBootApplication注解实际上由三个注解组合而成，分别是@SpringBootConfiguration、@EnableAutoConfiguration和@ComponentScan。

Info

由 exclude 和 excludeName 配置不需要自动装备的域名，scanBasePackages，scanBasePackageClasses 配置需要扫描的的包路径和类路径

源码：

@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 {  
    @AliasFor(  
        annotation = EnableAutoConfiguration.class  
    )  
    Class<?>[] exclude() default {};  
  
    @AliasFor(  
        annotation = EnableAutoConfiguration.class  
    )  
    String[] excludeName() default {};  
  
    @AliasFor(  
        annotation = ComponentScan.class,  
        attribute = "basePackages"  
    )  
    String[] scanBasePackages() default {};  
  
    @AliasFor(  
        annotation = ComponentScan.class,  
        attribute = "basePackageClasses"  
    )  
    Class<?>[] scanBasePackageClasses() default {};  
  
    @AliasFor(  
        annotation = ComponentScan.class,  
        attribute = "nameGenerator"  
    )  
    Class<? extends BeanNameGenerator> nameGenerator() default BeanNameGenerator.class;  
  
    @AliasFor(  
        annotation = Configuration.class  
    )  
    boolean proxyBeanMethods() default true;  
}