Field xxx in xxx required a bean of type xxx that could not be found

背景：微服务之间使用Feign调用，当微服务B依赖微服务A后，启动报错Field xxx in xxx required a bean of type xxx that could not be found

使用@SpringCloudApplication+@ComponentScan或@SpringBootApplication+@EnableEurekaClient注解均会报错（包没扫描到）

解决办法：
使用@EnableFeignClients(basePackages={"com.xxx.xxx"})
方案一：(SpringBootApplication配置scanBasePackages = "xxxx")自行加上

@SpringBootApplication
@EnableFeignClients(basePackages={"com.xxx.xxx","com.xx.xxx"})

方案二：

@SpringCloudApplication
@ComponentScan(basePackages = {"com.xxx.lib","com.xxx.xxx","com.xxx.xxxx"})
@EnableFeignClients(basePackages = {"com.xxx.xxx","com.xx.xxx"})

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