### @ComponentScan @ComponentScan默认规则：它会以配置类所在的包作为基础包（base package）来扫描组件 ``` @ComponentScan("com.quancheng") public class Application { } @ComponentScan({ "com.saluki.client", "com.quancheng.*.service.impl", "com.quancheng.hades.*", "com.quancheng.pay.*", "com.quancheng.pay.service.*", "com.quancheng.*.web.api", "com.quancheng.shared.*" }) public class Application { } @ComponentScan(basePackages = "com.quancheng") public class Application { } @ComponentScan(basePackages = {"com.quancheng","com.saluki.client"}) public class Application { } @ComponentScan(basePackageClasses = {RedisServiceImpl.class, UserDao.class}) public class Application { } ```