c3p0配置数据源一直报错，虽然不影响开发，但是总是报错很让人难受，求大神们帮忙看看，10C币奉上

以下是错误信息：
Failed to destroy resource: com.mchange.v2.c3p0.impl.NewPooledConnection@1e8491f3
java.lang.NullPointerException
at com.mysql.jdbc.StatementImpl.realClose(StatementImpl.java:2307)
at com.mysql.jdbc.PreparedStatement.realClose(PreparedStatement.java:2688)
at com.mysql.jdbc.ConnectionImpl.closeAllOpenStatements(ConnectionImpl.java:1489)
at com.mysql.jdbc.ConnectionImpl.realClose(ConnectionImpl.java:4289)
at com.mysql.jdbc.ConnectionImpl.close(ConnectionImpl.java:1461)
at com.mchange.v2.c3p0.impl.NewPooledConnection.close(NewPooledConnection.java:326)
at com.mchange.v2.c3p0.impl.NewPooledConnection.close(NewPooledConnection.java:115)
at com.mchange.v2.c3p0.impl.C3P0PooledConnectionPool$1.destroyResource(C3P0PooledConnectionPool.java:185)
at com.mchange.v2.resourcepool.BasicResourcePool$5.run(BasicResourcePool.java:576)
at com.mchange.v2.async.ThreadPoolAsynchronousRunner$PoolThread.run(ThreadPoolAsynchronousRunner.java:354)
下面是我配置数据源的配置信息：

貌似是connection归还出现了异常。而且里面有一个空指针异常。希望根据这个思路试试debug

class="com.mchange.v2.c3p0.ComboPooledDataSource"
destroy-method="close">

 <bean id="dataSource"
        class="com.mchange.v2.c3p0.ComboPooledDataSource"
        destroy-method="close">
        <property name="driverClass" value="${c3p0.driverClass}"></property>
        <property name="jdbcUrl" value="${c3p0.url}"></property>
        <property name="user" value="${c3p0.user}"></property>
        <property name="password" value="${c3p0.password}"></property>
        <property name="acquireIncrement" value="${c3p0.acquireIncrement}"></property>
        <property name="initialPoolSize" value="${c3p0.initialPoolSize}"></property>
        <property name="maxIdleTime" value="${c3p0.maxIdleTime}"></property>
        <property name="maxPoolSize" value="${c3p0.maxPoolSize}"></property>
        <property name="minPoolSize" value="${c3p0.minPoolSize}"></property>
        <property name="acquireRetryDelay" value="1000"></property>
        <property name="acquireRetryAttempts" value="60"></property>
        <property name="breakAfterAcquireFailure" value="false"></property>
    </bean>

换个数据源吧，这个前两天在项目中也有遇到，暂时找不到问题，换了dataSourc就没报错了，推荐appach的或者alibaba的