Spring. 通过XML装配bean

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1.创建XML配置规范

<?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:context="http://www.springframework.org/schema/context"
	xsi:schemaLocation="http://www.springframework.org/schema/beans
		http://www.springframework.org/schema/beans/spring-beans.xsd
		http://www.springframework.org/schema/context
		http://www.springframework.org/schema/context/spring-context.xsd">
	
	<!-- ... -->
	
</beans>

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2.声明bean

<bean id="loginPanel" class="top.tanmujin.login.loginPanel" />

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3.借助构造器初始化bean

<bean id="loginPanel" class="top.tanmujin.login.loginPanel">
    <constructor-arg ref="compactDisc" />    <!--传递对compactDisc的引用-->
    <constructor-arg value="This is String" />    <!--传递一个字符串-->
    <constructor-arg><null/></constructor-arg>    <!--给构造器传递null-->
    <constructor-arg>        <!--传递list-->
        <list>
            <value>1</value>
            <value>2</value>
            <value>3</value>
            <value>4</value>
        </list>
    </constructor-arg>
    <constructor-arg>        <!--传递list，元素为对 bean 的引用-->
        <list>
            <ref bean="bean1" />
            <ref bean="bean2" />
            <ref bean="bean3" />
            <ref bean="bean4" />
        </list>
    </constructor-arg>
    <constructor-arg>        <!--set与list区别不大-->
        <set>
            <value>1</value>
            <value>2</value>
            <value>3</value>
            <value>4</value>
        </set>
    </constructor-arg>
</bean>

 

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4.为bean设置属性

<bean id="loginPanel" class="top.tanmujin.login.loginPanel" >
    <property name="compactDisc" ref="compactDisc" />    <!--注入bean的引用-->
    <property name="artist" value="The Beatles" />        <!--注入字符串-->
</bean>

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