Invalid property &#039…

错误信息：

严重: Exception sending context
initialized event to listener instance of class
[org.springframework.web.context.ContextLoaderListener]
org.springframework.beans.factory.BeanCreationException:
Error creating bean with name 'dataSource' defined in class path
resource [config/applicationContext.xml]: Error setting property
values; nested exception is
org.springframework.beans.NotWritablePropertyException: Invalid
property 'driverClassName' of bean class
[com.mchange.v2.c3p0.ComboPooledDataSource]: Bean property
'driverClassName' is not writable or has an invalid setter method.
Does the parameter type of the setter match the return type of the
getter?
at
org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyPropertyValues(AbstractAutowireCapableBeanFactory.
at
org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.
at
org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.
at
org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.
at
org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.
at
org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.
at
org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.
at
org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.
at
org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.
at
org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.
at
org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.
at
org.springframework.web.context.ContextLoader.configureAndRefreshWebApplicationContext(ContextLoader.
at
org.springframework.web.context.ContextLoader.initWebApplicationContext(ContextLoader.
at
org.springframework.web.context.ContextLoaderListener.contextInitialized(ContextLoaderListener.
at
org.apache.catalina.core.StandardContext.listenerStart(StandardContext.
at
org.apache.catalina.core.StandardContext.startInternal(StandardContext.
at
org.apache.catalina.util.LifecycleBase.start(LifecycleBase.
at
org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.
at
org.apache.catalina.core.ContainerBase.addChild(ContainerBase.
at
org.apache.catalina.core.StandardHost.addChild(StandardHost.
at
org.apache.catalina.startup.HostConfig.deployDescriptor(HostConfig.
at
org.apache.catalina.startup.HostConfig$DeployDescriptor.run(HostConfig.java:

解决方法：
从报错信息中可以看出是[com.mchange.v2.c3p0.ComboPooledDataSource]是这个类下面的属性不正确，所以这里牵涉到dbcp和c3p0两种数据库连接池，在配置数据源的时候，使用这两种数据库连接池的时候，下面的属性是不一样的，这是问题的关键所在。所以只需要确定你用的是哪一种，然后去网上查一下，该类的属性按照对应的进行修改就行了。
dbcp和c3p0的比较：
dbcp相对来说比较高效，但是存在丢失连接的可能，而c3p0则比较稳定。所以个人推荐使用c3p0作为数据库连接池