RestTemplate java.net.UnknownHostException

背景:公司内部系统的架构升级准备用微服务一套；记录遇到的坑。

错误信息:
servlet.service() for servlet [dispatcherservlet] in context with path [] threw exception [request processing failed; 
nested exception is org.springframework.web.client.resourceaccessexception: i/o error on get request for "http://provider/add": provider; 
nested exception is java.net.unknownhostexception: provider] with root cause

java.net.unknownhostexception: provider

 看到有人说修改localhost 为本机ip 尝试也没有效果

 

 

上面是引起错误的代码。

这是正确的代码

加上@loadbalanced