springMVC 配置jdbcTemplate连接Oracle数据库出错错误信息：log4j:WARN No appenders could be found for logger (org.springframework.core.env.StandardEnvironment).log4j:WARN Please initialize the log4j system properly.Exception in thread "main" java.lang.ExceptionInInitializerErrorat com.test.Test.main(Test.java:15)Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name ‘dataSource’ defined in class path resource [springmvc-servlet.xml]: Error setting property values; nested exception is org.springframework.beans.PropertyBatchUpdateException; nested PropertyAccessExceptions (1) are:PropertyAccessException 1: org.springframework.beans.MethodInvocationException: Property ‘driverClassName’ threw exception; nested exception is java.lang.IllegalStateException: Could not load JDBC driver class [oracle.jdbc.driver.OracleDriver]at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyPropertyValues(AbstractAutowireCapableBeanFactory.java:1427)at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1132)at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:522)at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:461)at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:295)at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:223)at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:292)at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:194)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.context.support.ClassPathXmlApplicationContext.<init>(ClassPathXmlApplicationContext.java:139)at org.springframework.context.support.ClassPathXmlApplicationContext.<init>(ClassPathXmlApplicationContext.java:83)at com.utils.SpringUtil.<clinit>(SpringUtil.java:16)… 1 moreCaused by: org.springframework.beans.PropertyBatchUpdateException; nested PropertyAccessExceptions (1) are:PropertyAccessException 1: org.springframework.beans.MethodInvocationException: Property ‘driverClassName’ threw exception; nested exception is java.lang.IllegalStateException: Could not load JDBC driver class [oracle.jdbc.driver.OracleDriver]at org.springframework.beans.AbstractPropertyAccessor.setPropertyValues(AbstractPropertyAccessor.java:101)at org.springframework.beans.AbstractPropertyAccessor.setPropertyValues(AbstractPropertyAccessor.java:57)at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyPropertyValues(AbstractAutowireCapableBeanFactory.java:1424)… 14 more猜想：1.SpringMVC xml配置文件配置错误，把多余的配置信息注释掉，问题依然存在2.dataSource bean中的url、driverClassName、username、password 配置出错
3.缺少jar包，把正确项目的jar包全部拷贝过来，问题未解决（后来发现还是缺少需要的jar包而多了一个不需要的jar包）
4.最后终于发现还是jar包的问题，原来是少了ojdbc14.jar这个jar包，，我以为有了spring.jdbc-3.0.5.jar就不需要ojdbc.jar包了。
如果是连接MySql数据库需要导入mysql-connector-java-5.0.8-bin.jar包
项目的jar包：
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想像力比知识更重要
