Spring案例--打印机

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xsi:schemaLocation="http://www.springframework.org/schema/beans
       http://www.springframework.org/schema/beans/spring-beans.xsd">
    <!--注入bean
        id相当于当前bean唯一标识
        class是bean 的全路径
        property注入bean中的属性         必须封装
    -->
    <!--注入墨盒-->
    <bean id="colorInk" class="cn.spring.print.ink.ColorInk"></bean>
    <bean id="blackWhiteInk" class="cn.spring.print.ink.BlackWhiteInk"></bean>
    <!--注入纸张-->
    <bean id="a4Paper" class="cn.spring.print.paper.A4Paper"></bean>
    <bean id="b5Paper" class="cn.spring.print.paper.B5Paper"></bean>
    <!--打印机-->
    <bean id="printer" class="cn.spring.print.printer.Printer">
        <!--将墨盒纸张组合起来-->
        <property name="paper" ref="b5Paper"></property>
        <property name="ink" ref="colorInk"></property>
    </bean>
</beans>