<?xml version="1.0" encoding="UTF-8" ?>
<beans>
<bean id=...>
<bean id=...>
</beans>
<context:component-scan base-package="....">
:自动扫描以创建 bean 实例;
1. 数据库配置
<context:property-placeholder />
<context:property-placeholder location="classpath:jdbc.properties"/>
数据库配置文件(jdbc.properties)在类路径(classpath,src/main/resources/)下;
<bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource" destroy-method="close" p:driverClassName="${jdbc.driverClassName}" p:url="${jdbc.url}" p:username="${jdbc.username}" p:password="${jdbc.password}"/>