问题:08001] Connection to localhost:8777 refused. Check that the hostname and port are correct and that the postmaster is accepting TCP/IP connections.
java.net.ConnectException: Connection refused: connect.
,不知道是什么原因,因为idea出了问题,所以我就把idea重新卸载了,然后再重新连接数据库,跟以前一样的配置,但是出了这个问题没太明白
是不是端口被占用了