报错：com.mchange.v2.c3p0.ComboPooledDataSource

org.springframework.beans.factory.CannotLoadBeanClassException: Cannot find class [com.mchange.v2.c3p0.ComboPooledDataSource] for bean with name 'dataSource' defined in URL [file:/D:/workspaces/lxyy_spring/WebRoot/WEB-INF/classes/spring-mvc.xml]; nested exception is java.lang.ClassNotFoundException: com.mchange.v2.c3p0.ComboPooledDataSource

    at org.springframework.beans.factory.support.AbstractBeanFactory.resolveBeanClass(AbstractBeanFactory.java:1266)

    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.predictBeanType(AbstractAutowireCapableBeanFactory.java:581)

    at org.springframework.beans.factory.support.AbstractBeanFactory.isFactoryBean(AbstractBeanFactory.java:1335)

    at org.springframework.beans.factory.support.AbstractBeanFactory.isFactoryBean(AbstractBeanFactory.java:901)

    at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:607)

    at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:932)

    at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:479)

    at org.springframework.web.servlet.FrameworkServlet.configureAndRefreshWebApplicationContext(FrameworkServlet.java:652)

    at org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.java:600)

    at org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.java:666)

    at org.springframework.web.servlet.FrameworkServlet.initWebApplicationContext(FrameworkServlet.java:519)

    at org.springframework.web.servlet.FrameworkServlet.initServletBean(FrameworkServlet.java:460)

    at org.springframework.web.servlet.HttpServletBean.init(HttpServletBean.java:136)

    at javax.servlet.GenericServlet.init(GenericServlet.java:160)

    at org.apache.catalina.core.StandardWrapper.initServlet(StandardWrapper.java:1267)

    at org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.java:1186)

    at org.apache.catalina.core.StandardWrapper.load(StandardWrapper.java:1081)

    at org.apache.catalina.core.StandardContext.loadOnStartup(StandardContext.java:5027)

    at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5314)

    at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)

    at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1559)

    at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1549)

    at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:334)

    at java.util.concurrent.FutureTask.run(FutureTask.java:166)

    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110)

    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603)

    at java.lang.Thread.run(Thread.java:722)

Caused by: java.lang.ClassNotFoundException: com.mchange.v2.c3p0.ComboPooledDataSource

    at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1714)

    at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1559)

    at org.springframework.util.ClassUtils.forName(ClassUtils.java:260)

    at org.springframework.beans.factory.support.AbstractBeanDefinition.resolveBeanClass(AbstractBeanDefinition.java:416)

    at org.springframework.beans.factory.support.AbstractBeanFactory.doResolveBeanClass(AbstractBeanFactory.java:1287)

    at org.springframework.beans.factory.support.AbstractBeanFactory.resolveBeanClass(AbstractBeanFactory.java:1258)

    ... 26 more

缺少c3p0-0.9.1.2.jar

maven管理为

<dependency>

      <groupId>c3p0</groupId>

      <artifactId>c3p0</artifactId>

      <version>0.9.1.2</version>

    </dependency>