原因时你的properties资源文件中命名和spring关键字冲突
username=root password=root url=jdbc:mysql://localhost:3306/spring driver=com.mysql.cj.jdbc.Driver
换成下面的方法即可解决
jdbc.username=root jdbc.password=root jdbc.url=jdbc:mysql://localhost:3306/spring jdbc.driver=com.mysql.cj.jdbc.Driver
- JdbcTemplate SQLException connection errorCode localhostjdbctemplate sqlexception connection errorcode quot sqlexception connection errorcode sqlexception connection localhost错误 sqlexception errorcode access denied 39 sqlexception localhost password hikaridatasource sqlexception connection hikaripool sqlexception connection exception interrupt mysql localhost 39 connect connection the localhost actions localhost connect server mysql