java.io.IOException: Error while requesting: http://null/vipserver/serverlist'. Server returned: 500
at com.alibaba.nacos.client.naming.net.NamingProxy.getServerListFromEndpoint(NamingProxy.java:102)
at com.alibaba.nacos.client.naming.net.NamingProxy.refreshSrvIfNeed(NamingProxy.java:135)
at com.alibaba.nacos.client.naming.net.NamingProxy.access$000(NamingProxy.java:39)
at com.alibaba.nacos.client.naming.net.NamingProxy$2.run(NamingProxy.java:83)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308)
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180)
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at java.lang.Thread.run(Thread.java:748)
版本: java 1.8.0 spring-boot 2.1.7 nacos 0.2.1
https://github.com/nacos-group/nacos-examples/blob/master/nacos-spring-boot-example/nacos-spring-boot-discovery-example/src/main/java/com/alibaba/nacos/example/spring/boot/NacosDiscoveryApplication.java
最后发现 endpoint 变量为空