springboot自动装配机制

通过@SpringBootApplication找到@EnableAutoConfiguration，
然后再找到@Import注解找到AutoConfigurationImportSelector类加载器实现,AutoConfigurationImportSelector类会去引用的依赖jar包下找到META-INF/spring.factories
参考技术博客：https://blog.csdn.net/u010132847/article/details/128920976

@ConditionalOnProperty(prefix = "配置前缀", value = "enable", havingValue = "true")
@ConfigurationProperties(prefix = "fat-loss")