"Connection refused" when syncing Maven project in 2021.1 : java.rmi.ConnectException: Connection...
解决方案settings—》Build,Execution,Deployment—》BuildTools—》Maven—》Importing—》JDKforimporter选择你安装的JDK版本如果还是解决不了问题,可以尝试添加如下两个参数:maven->Importing->VMoptionsforimporter-Xmx768m-Dmaven.wagon.http.ssl.insecure=t