Acquisition Attempt Failed!!! Clearing pending acquires. While trying to acquire a needed new resour

搭建ssm框架练习，系统启动不起来 问题：事务管理器读不到mysql的数据源 解决：设置idea的警告级别，调到最低，如图 问题：运行时报错（问题的先后忘了，差不多就是这三个）： Acquisition Attempt Failed!!! Clearing pending acquires. While trying to acquire a needed new resour java.sql.

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