type lib, such as dataflow, script, HTTP, file, big data – Focus business SDK, can work with Spring IOC • Admin Console – Job administration – Job event trace query – Registry center management 3 3 similar to other usage of ElasticJob. The difference is that jobs will be registered into the Spring IoC container. Thread‐Safety Issue Bean is singleton by default. Consider setting Bean Scope to prototype create instances of OneOffJobBootstrap or ScheduleJobBootstrap and register them into the Spring IoC container automatically. Configuration reference: elasticjob: regCenter: serverLists: localhost:6181

互斥，事件追踪配置只能有一种属性 includeJobNames 与 excludeJobNames 都为空时，默认为所有作业加载事件追踪 目前仅提供了 RDB 类型的事件追踪数据源实现。Spring IoC 容器中存在 DataSource 类型的 bean 且配置 数据源类型为 RDB 时会自动配置事件追踪，无须显式创建。 配置格式参考： YAML elasticjob: tracing:

implementation class to use. This is assembled by Spring. For the rules of this assembly, see The IoC container on Spring’s official website. • @PostMapping declares that this function responds to a POST

的自动装配，可以看到，此处声明需要一个 PlayerService 对象，此对象为接口， 并未指定使用哪一个实现类，这是由 Spring 自动装配的，有关此装配规则，可查看 Spirng 官网中的 The 147 IoC container 一文。 • [@PostMapping](https://docs.spring.io/spring-framework/docs/current/javadoc-api/o