@Configuration
    @ComponentScan("package")
    public class TestConfig {
    }

    @Retention(RetentionPolicy.RUNTIME)
    @Target({ElementType.TYPE})
    @Documented
    @Import({TestConfig.class})
    public @interface EnableTestConfig {
    }

    @EnableLogRecordClient
    @Configuration
    public class Test {
    }
 

3.spring 主動發現方式：

    resources/META_INF/spring.factories 文件 

    org.springframework.boot.autoconfigure.EnableAutoConfiguration=     package.class

spring自動註入組件方式