依赖注入和实例化配置文件

applicationContext.xml

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:p="http://www.springframework.org/schema/p"
       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="animal" class="com.neuedu.demo1.Dog">
        <property name="info" value="二哈"></property>
    </bean>
    
    <!-- 三种实例化方式 -->
    <!-- 无参构造方法实例化 -->
    <bean id="bean1" class="com.neuedu.demo2.Bean1"></bean>
    <!-- 静态工厂实例化 -->
    <bean id="bean2" class="com.neuedu.demo2.Bean2Factory" factory-method="getBean2"></bean>
    <!-- 实例工厂实例化 -->
    <bean id="bean3" factory-bean="bean3Factory" factory-method="getBean3"></bean>
    <bean id="bean3Factory" class="com.neuedu.demo2.Bean3Factory"></bean>
    
    <!-- bean的作用范围 -->
    <!-- <bean id="customer" class="com.neuedu.demo3.Customer" scope="session"></bean> -->
    <!-- <bean id="product" class="com.neuedu.demo3.Product" init-method="setup" destroy-method="teardown">
        <property name="name" value="空调"></property>
    </bean> -->
    
    <!-- 构造器注入 -->
    <bean id="car" class="com.neuedu.demo4.Car">
        <constructor-arg name="name" type="java.lang.String" value="奔驰"/>
        <constructor-arg name="price" type="java.lang.Double" value="660000"/>
    </bean>
    <!-- setter注入 -->
    <bean id="car2" class="com.neuedu.demo4.Car2">
        <property name="name" value="宝马"/>
        <property name="price" value="300000"/>
    </bean>
    <!-- <bean id="person" class="com.neuedu.demo4.Person">
        <property name="name" value="小明"/>
        <property name="car2" ref="car2"/>
    </bean> -->
    <!-- 名称空间p注入 -->
    <!-- <bean id="car2" class="com.neuedu.demo4.Car2" p:name="宝马" p:price="400000"/>
    <bean id="person" class="com.neuedu.demo4.Person" p:name="小丽" p:car2-ref="car2"/> -->
    <!-- SpEL注入 -->
    <bean id="person" class="com.neuedu.demo4.Person">
        <property name="name" value="#{personInfo.showName()}"></property>
        <property name="car2" value="#{car2}"></property>
    </bean>
    <bean id="personInfo" class="com.neuedu.demo4.PersonInfo">
        <property name="name" value="小任"></property>
    </bean>
    
    
    <import resource="applicationContext2.xml"/>
    
</beans>