SpringBoot 自动装配原理详解

Posted on | Post modified: | In

从@SpringBootApplication开始

这是一个复合注解

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@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 {
  ...
}

@SpringBootConfiguration

这也是一个复合注解

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@Target({ElementType.TYPE})
@Retention(RetentionPolicy.RUNTIME)
@Documented
@Configuration
public @interface SpringBootConfiguration {
}

实质就是@Configuration 一般用于快速配置ioc容器