关于Spring配置 （Cannot find class [org.apache.commons.dbcp.BasicDataSource] 问题）

myeclipse抛出异常

 org.springframework.beans.factory.CannotLoadBeanClassException: Cannot find class [org.apache.commons.dbcp.BasicDataSource] for bean with name 'dataSource' defined in URL [file:/opt/app-w/apache-tomcat-7.0./webapps/telemetry/WEB-INF/classes/spring/applicationContext.xml]; nested exception is java.lang.ClassNotFoundException: org.apache.commons.dbcp.BasicDataSource
 at org.springframework.beans.factory.support.AbstractBeanFactory.resolveBeanClass(AbstractBeanFactory.java:)
 at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.predictBeanType(AbstractAutowireCapableBeanFactory.java:)
 at org.springframework.beans.factory.support.AbstractBeanFactory.isFactoryBean(AbstractBeanFactory.java:)
 at org.springframework.beans.factory.support.AbstractBeanFactory.isFactoryBean(AbstractBeanFactory.java:)
 at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:)
 at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:)
 at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:)
 at org.springframework.web.context.ContextLoader.configureAndRefreshWebApplicationContext(ContextLoader.java:)
 at org.springframework.web.context.ContextLoader.initWebApplicationContext(ContextLoader.java:)
 at org.springframework.web.context.ContextLoaderListener.contextInitialized(ContextLoaderListener.java:)
 at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:)
 at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:)
 at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:)
 at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:)
 at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:)
 at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:)
 at org.apache.catalina.startup.HostConfig.deployDirectory(HostConfig.java:)
 at org.apache.catalina.startup.HostConfig$DeployDirectory.run(HostConfig.java:)
 at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:)
 at java.util.concurrent.FutureTask.run(FutureTask.java:)
 at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:)
 at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:)
 at java.lang.Thread.run(Thread.java:)
 Caused by: java.lang.ClassNotFoundException: org.apache.commons.dbcp.BasicDataSource
 at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:)
 at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:)
 at org.springframework.util.ClassUtils.forName(ClassUtils.java:)
 at org.springframework.beans.factory.support.AbstractBeanDefinition.resolveBeanClass(AbstractBeanDefinition.java:)
 at org.springframework.beans.factory.support.AbstractBeanFactory.doResolveBeanClass(AbstractBeanFactory.java:)
 at org.springframework.beans.factory.support.AbstractBeanFactory.resolveBeanClass(AbstractBeanFactory.java:)
 ...  more
 -- :: org.springframework.web.context.ContextLoader ERROR Context initialization failed

解决方法：

缺少commons-dbcp.jar、commons-pool.jar这两个包

在pom.xml中加入：

    <dependency>
         <groupId>commons-dbcp</groupId>
         <artifactId>commons-dbcp</artifactId>
         <version>1.4</version>
     </dependency>

     <dependency>
         <groupId>commons-pool</groupId>
         <artifactId>commons-pool</artifactId>
         <version>1.6</version>
     </dependency>