小菜鸟学Spring-读取属性文件值（三）

PropertyPlaceholderConfigurer属性配置文件内容如下所示：

<bean class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer"> <property name="locations" value="classpath:com/foo/jdbc.properties"/></bean><bean id="dataSource" destroy-method="close" class="org.apache.commons.dbcp.BasicDataSource"> <property name="driverClassName" value="${jdbc.driverClassName}"/> <property name="url" value="${jdbc.url}"/> <property name="username" value="${jdbc.username}"/> <property name="password" value="${jdbc.password}"/></bean>

<context:property-placeholder location="classpath:com/foo/jdbc.properties"/>