扫描的包名是：资源名（Source name）
// 启动类扫描
@SpringBootApplication(scanBasePackages ={"springcloud.client01","springcloud.common.db.utils"})
// mapper注解扫描
@MapperScan(basePackages = {"com.changgou.goods.dao"})
// 组件扫描
@ComponentScans(value = {@ComponentScan("SpringCloud.common.db"),@ComponentScan("SpringCloud.client01")})