以下是使用spring2.5.6整合jdbc时，配置文件applicationContext.xml的写法
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:tx="http://www.springframework.org/schema/tx"
xmlns:aop="http://www.springframework.org/schema/aop"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:jee="http://www.springframework.org/schema/jee"
xsi:schemaLocation="
http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-2.5.xsd
http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-2.5.xsd
http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.5.xsd
http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-2.5.xsd
http://www.springframework.org/schema/jee http://www.springframework.org/schema/jee/spring-jee-2.5.xsd">
<bean id="jdbcUserDAO" class="com.tarena.dao.impl.JdbcUserDAO">
<property name="dataSource" ref="myDataSource"></property>
</bean>
<!--以下的bean制定了所操作的数据库的相关信息 -->
<bean id="myDataSource" class="org.apache.commons.dbcp.BasicDataSource">
<property name="username" value="root"></property>
<property name="password" value=""></property>
<property name="driverClassName" value="com.mysql.jdbc.Driver"></property>
<property name="url" value="jdbc:mysql:///dangdang"></property>
<property name="maxActive" value="15"></property>
<property name="initialSize" value="2"></property>
</bean>
</beans>