Spring(三)之容器对象的属性赋值

基本类型赋值

使用property标签，本质是调用setter方法赋值。

<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">
    
    
    
    <bean id="person1" class="helloWorld.Person">
        <property name="name" value="张三">property>
        <property name="age" value="18">property>
    bean>
beans>

复杂类型赋值

赋值null

<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">
    <bean id="person1" class="helloWorld.Person">
        <property name="name">
			<null/>
		property>
    bean>
beans>

自定义对象赋值

比如Person对象中有个Car对象

• 方法1：property标签中定义bean

<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">
    <bean id="person1" class="helloWorld.Person">
        <property name="car">
			<bean class="helloWorld.Car">
				<property name="name" value="兰博基尼">property>
				<property name="price" value="1000000">property>
			bean>
		property>
    bean>
beans>

• 方法2：使用外部引用ref

<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">
    <bean id="person1" class="helloWorld.Person">
        <property name="car" ref="car1">property>
    bean>
    <bean id="car1" class="helloWorld.Car">
		<property name="name" value="兰博基尼">property>
		<property name="price" value="1000000">property>
	bean>
beans>

List对象赋值

<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">
    <bean id="person1" class="helloWorld.Person">
        <property name="books">
        	
			<list>
				
				<bean class="helloWorld.Book"> 
					<property name="bookName" value="西游记">	      
				bean>
				
				<ref bean="book01"/>
			list>
		property>
    bean>
beans>

Map对象赋值

<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">
    <bean id="person1" class="helloWorld.Person">
        <property name="books">
        	
			<map>
				
				<entry key="01" value="tom">entry>
				
				<entry key="02" value-ref="book">entry>
				
				<entry key="03">
				<bean class="book">bean>
				entry>
			map>
		property>
    bean>
beans>