出现场景：修改依赖后reload project时出现
在idea中打开日志（Help —> Show Log in Explore)
报异常为：java.lang.RuntimeException: Cannot reconnect.
Caused by: java.rmi.ConnectException: Connection refused to host: 127.0.0.1
解决办法：将maven importing中的JDK版本改成自己装的版本即可
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