progsq

i find the problem that @ComponentScan, I use it @ComponentScan("com") ,then it will throw NullException, when i change it to @ComponentScan("com.ruoyi"),then it is ok.

异常信息如下 java.lang.NullPointerException: null at java.util.concurrent.ConcurrentHashMap.get(ConcurrentHashMap.java:936) ~[na:1.8.0_341] at java.util.concurrent.ConcurrentHashMap.containsKey(ConcurrentHashMap.java:964) ~[na:1.8.0_341] at org.springframework.cloud.context.named.NamedContextFactory.getContext(NamedContextFactory.java:102) ~[spring-cloud-context-3.1.1.jar:3.1.1] at org.springframework.cloud.context.named.NamedContextFactory.getProvider(NamedContextFactory.java:161) ~[spring-cloud-context-3.1.1.jar:3.1.1] at org.springframework.cloud.context.named.ClientFactoryObjectProvider.delegate(ClientFactoryObjectProvider.java:115) ~[spring-cloud-context-3.1.1.jar:3.1.1] at org.springframework.cloud.context.named.ClientFactoryObjectProvider.getIfAvailable(ClientFactoryObjectProvider.java:64) ~[spring-cloud-context-3.1.1.jar:3.1.1] at com.alibaba.cloud.nacos.loadbalancer.NacosLoadBalancer.choose(NacosLoadBalancer.java:68) ~[spring-cloud-starter-alibaba-nacos-discovery-2021.0.1.0.jar:2021.0.1.0] at com.alibaba.cloud.nacos.loadbalancer.NacosLoadBalancer.choose(NacosLoadBalancer.java:47) ~[spring-cloud-starter-alibaba-nacos-discovery-2021.0.1.0.jar:2021.0.1.0] at org.springframework.cloud.loadbalancer.blocking.client.BlockingLoadBalancerClient.choose(BlockingLoadBalancerClient.java:155) ~[spring-cloud-loadbalancer-3.1.1.jar:3.1.1]...