四月 15, 2019 4:19:44 下午 org.springframework.test.context.support.DefaultTestContextBootstrapper getDefaultTestExecutionListenerClassNames
信息: Loaded default TestExecutionListener class names from location [META-INF/spring.factories]: [org.springframework.test.context.web.ServletTestExecutionListener, org.springframework.test.context.support.DirtiesContextBeforeModesTestExecutionListener, org.springframework.test.context.support.DependencyInjectionTestExecutionListener, org.springframework.test.context.support.DirtiesContextTestExecutionListener, org.springframework.test.context.transaction.TransactionalTestExecutionListener, org.springframework.test.context.jdbc.SqlScriptsTestExecutionListener]
四月 15, 2019 4:19:44 下午 org.springframework.test.context.support.DefaultTestContextBootstrapper getTestExecutionListeners
信息: Using TestExecutionListeners: [org.springframework.test.context.web.ServletTestExecutionListener@1e67b872, org.springframework.test.context.support.DirtiesContextBeforeModesTestExecutionListener@60addb54, org.springframework.test.context.support.DependencyInjectionTestExecutionListener@3f2a3a5, org.springframework.test.context.support.DirtiesContextTestExecutionListener@4cb2c100, org.springframework.test.context.transaction.TransactionalTestExecutionListener@6fb554cc, org.springframework.test.context.jdbc.SqlScriptsTestExecutionListener@614c5515]
四月 15, 2019 4:19:44 下午 org.springframework.beans.factory.xml.XmlBeanDefinitionReader loadBeanDefinitions
信息: Loading XML bean definitions from class path resource [spring/spring-dao.xml]
四月 15, 2019 4:19:44 下午 org.springframework.context.support.GenericApplicationContext prepareRefresh
信息: Refreshing org.springframework.context.support.GenericApplicationContext@7dc7cbad: startup date [Mon Apr 15 16:19:44 CST 2019]; root of context hierarchy
四月 15, 2019 4:19:44 下午 com.mchange.v2.log.MLog
信息: MLog clients using java 1.4+ standard logging.
四月 15, 2019 4:19:44 下午 com.mchange.v2.c3p0.C3P0Registry banner
信息: Initializing c3p0-0.9.1.2 [built 21-May-2007 15:04:56; debug? true; trace: 10]

Error querying database. Cause: org.springframework.jdbc.CannotGetJdbcConnectionException: Could not get JDBC Connection; nested exception is java.sql.SQLException: Connections could not be acquired from the underlying database!

The error may exist in file [D:\workplace\o2o\target\classes\mapper\AreaDao.xml]

The error may involve com.zzh.o2o.dao.AreaDao.queryArea

The error occurred while executing a query

Cause: org.springframework.jdbc.CannotGetJdbcConnectionException: Could not get JDBC Connection; nested exception is java.sql.SQLException: Connections could not be acquired from the underlying database!

请教下老师该怎么更正