解决SSM工程中C3P0一直报错问题(短时间却不影响代码执行)

修改applicationContext.xml中的c3p0配置  添加 destroy-method="close" 

<bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource" destroy-method="close">
        <property name="driverClass" value="${db.driver}"/>
        <property name="jdbcUrl" value="${db.url}"/>
        <property name="user" value="${db.username}"/>
        <property name="password" value="${db.password}"/>
        <property name="maxIdleTime" value="${db.maxIdleTime}"/>
        <property name="maxPoolSize" value="${db.maxPoolSize}"/>
        <property name="minPoolSize" value="${db.minPoolSize}"/>
        <property name="acquireRetryDelay" value="${db.acquireRetryDelay}"/>
        <property name="acquireIncrement" value="${db.acquireIncrement}"/>
        <property name="acquireRetryAttempts" value="${db.acquireRetryAttempts}"/>
        <property name="breakAfterAcquireFailure" value="${db.breakAfterAcquireFailure}"/>
    </bean>