关于tomcat启动错误的问题,求大神指点
Error creating bean with name 'daoHelper' defined in ServletContext resource [/WEB-INF/applicationContext-base.xml]: Invocation of init method failed; nested exception is org.springframework.transaction.CannotCreateTransactionException: Could not open JDBC Connection for transaction; nested exception is java.sql.SQLException: Connections could not be acquired from the underlying database!


这是啥意思,新书求指教,刚开始使用这个,不是很懂....

[解决办法]
好吧，祝你好运!