【已解决】com.mysql.jdbc.exceptions.jdbc4.CommunicationsExcepti:Communications link failure ----mysql连接报错
使用idea做项目时,连接mysql时报错;报错如下:Thelastpacketsuccessfullyreceivedfromtheserverwas1,548millisecondsago.Thelastpacketsentsuccessfullytotheserverwas1,540millisecondsago.###Theerrormayexistincom/liu/dao/Studen