2.减少spring的配置文件:applicationContext-common.xml

最新推荐文章于 2019-08-27 16:54:00 发布

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最新推荐文章于 2019-08-27 16:54:00 发布

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分类专栏： Spring

本文链接：https://blog.youkuaiyun.com/seeds_home/article/details/7906885

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本文介绍了一个使用Spring框架进行Bean配置的例子。展示了如何通过XML文件定义不同类型的Beans，并利用继承特性减少重复代码。具体包括Bean2依赖于Bean3、Bean4及Bean5的配置方式。

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<?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:aop="http://www.springframework.org/schema/aop"
	     xmlns:tx="http://www.springframework.org/schema/tx"
	     xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.0.xsd
           http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-2.0.xsd
           http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-2.0.xsd" default-lazy-init="true">
	 
	 <!-- 
	 <bean id="bean2" class="com.bjpowernode.spring.Bean2">
		<property name="bean3" ref="bean3"/>	
		<property name="bean4">
			<ref bean="bean4"/>
		</property>
		<property name="bean5" ref="bean5"/>
	</bean>
	
	<bean id="bean3" class="com.bjpowernode.spring.Bean3">
		<property name="id" value="100"/>
		<property name="name" value="zhangsan"/>
		<property name="sex" value="nan"/>
	</bean>
	
	<bean id="bean4" class="com.bjpowernode.spring.Bean4">
		<property name="id" value="100"/>
		<property name="name" value="zhangsan"/>
		<property name="sex" value="nan"/>
		<property name="age">
			<value>90</value>
		</property>
	</bean>
	 
	<bean id="bean5" class="com.bjpowernode.spring.Bean5">
		<property name="password" value="123"/>
	</bean>
	 -->
	 
	 <bean id="bean2" class="com.bjpowernode.spring.Bean2">
		<property name="bean3" ref="bean3"/>	
		<property name="bean4">
			<ref bean="bean4"/>
		</property>
		<property name="bean5" ref="bean5"/>
	</bean>
	 
	<bean id="AbstractBean" abstract="true">
		<property name="id" value="100"/>
		<property name="name" value="zhangsan"/>
		<property name="sex" value="nan"/>
	</bean>
	
	<bean id="bean3" class="com.bjpowernode.spring.Bean3" parent="AbstractBean"/>
	
	<bean id="bean4" class="com.bjpowernode.spring.Bean4" parent="AbstractBean">
		<property name="age">
			<value>90</value>
		</property>
	</bean>
	
	<bean id="bean5" class="com.bjpowernode.spring.Bean5">
		<property name="password" value="123"/>
	</bean>
</beans>