数据库连接查询问题,求助

Question

严重: Servlet.service() for servlet [springMVC] in context with path [/xphr2] threw exception [Request processing 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!] with root cause
com.mchange.v2.resourcepool.CannotAcquireResourceException: A ResourcePool could not acquire a resource from its primary factory or source.

Answer 1

数据库连接没有打开吧