连接数据库报错java.lang.RuntimeException: java.rmi.ConnectException: Connection refused to host:127.0.0.1;nested exception is: java.net.ConnectException: Connection timed out: connectinExceptionUtil.rethrow(ExceptionUtil.java:136)Caused by: java.rmi.ConnectException: Connection refused to host:127.0.0.1;nested exception is: java.net.ConnectException: Connection timed out: connect at java.rmi/sun.rmi.transport.tcp.TCPEndpoint.newSocket(TCPEndpoint.java:625)at java.rmi/sun.rmi.transport.tcp.TCPChannel.createConnection(TCPChannel.java:217)at java.rmi/sun.rmi.transport.tcp.TCPChannel.newConnection(TCPChannel.java:204)at java.rmi/sun.rmi.server.UnicastRef.newCall(UnicastRef.java:345)at java.rmi/sun.rmi.registry.RegistryImpl_Stub.lookup(RegistryImpl_Stub.java:116)inRemoteProcessSupport.lambda$acquire$2(RemoteProcessSupport.java:340)Caused by: java.net.ConnectException: Connection timed out: connect at java.base/sun.nio.ch.Net.connect0(Native Method)at java.base/sun.nio.ch.Net.connect(Net.java:589)at java.base/sun.nio.ch.Net.connect(Net.java:578)at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:583)at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:327)at java.base/java.net.Socket.connect(Socket.java:751)at java.base/java.net.Socket.connect(Socket.java:686)at java.base/java.net.Socket.(Socket.java:555)at java.base/java.net.Socket.(Socket.java:324)inRemoteServer$1.createSocket(RemoteServer.java:156)...48moreSuppressed: com.intellij.database.util.AsyncTask$Companion$FrameData:Async frame data: 提交 -正在连接到数据库… -准备连接 -建立数据库连接解决方式关闭防火墙