修改，增加非空判断

侯瑞军

2020-04-14 9b38de2269778eea9ef4a138d21e26d726fcecb5

1
E:\product\kidgrow\kidgrow-microservices-platform\kidgrow-microservices-platform\kidgrow-commons\kidgrow-sentinel-spring-boot-starter\src\main\java\com\kidgrow\sentinel\config\SentinelAutoConfigure.java