现象：
启动idea加载pom时，reading maven project reading pom.xml
原因：
在idea的help菜单下点击，show log in finder,看日志，无法链接网路（实际正常）
java.net.ConnectException: Connection refused
继续看日志，maven无法请求localhost
java.rmi.RemoteException: Cannot start maven service; nested exception is:
java.rmi.ConnectException: Connection refused to host: localhost; nested exception is:
java.net.ConnectException: Connection refused
解决：
hosts，添加 127.0.0.1 localhost
参考：https://blog.csdn.net/aguda_king/article/details/72550673
启动idea加载pom时，readingmavenprojectreadingpom.xml
原文：https://www.cnblogs.com/huanghongbo/p/13396345.html
