源地址：

方法4:在 JdbcTemplate_3的基础上(继承JdbcDaoSupport),改动配置文件,如下(最常用)

<?xml version="1.0" encoding="UTF-8"?>

<beans xmlns=""   xmlns:xsi=""      xmlns:aop=""      xmlns:tx=""      xmlns:context=""   xsi:schemaLocation="                 ">   <bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource" destroy-method="close">       <property name="driverClassName" value="${driverClassName}" />       <property name="url" value="${url}" />       <property name="username" value="${username}" />       <property name="password" value="${password}" />       <property name="initialSize" value="${initialSize}" />       <property name="maxActive" value="${maxActive}" />       <property name="minIdle" value="${minIdle}" />       <property name="maxIdle" value="${maxIdle}" />   </bean>     <bean id="footBallService" class="ajdbc.service.impl.FootBallServiceImpl">      <property name="dataSource" ref="dataSource" />      <!--  <property name="jdbcTemplate" ref="jdbcTemplate" /> -->   </bean>      <context:property-placeholder location="classpath:jdbc.properties" />   <!--    <bean id="jdbcTemplate" class="org.springframework.jdbc.core.JdbcTemplate">       <property name="dataSource" ref="dataSource" />   </bean>   --> </beans>