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  • Spring初学之bean之间的关系和bean的作用域

    一、bean之间的关系

    <?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:p="http://www.springframework.org/schema/p"
        xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd">
    <bean id="car" class="spring.beans.autowire.Car" 
    p:carName="奥迪^" p:price="300000"></bean>
    
    <!-- 继承 -->
    <bean id="car2" class="spring.beans.autowire.Car"
     p:price="100000" parent="car"></bean>
    
    <!-- 抽象类 -->
    <bean id="address1" p:city="重庆" abstract="true"></bean>
    
    <bean id="address" class="spring.beans.autowire.Address"
    p:more="梁平" parent="address1"></bean>
    
    <!-- 依赖 -->
    <bean id="person" class="spring.beans.relation.Person" p:name="张三" p:car-ref="car"
    depends-on="address" p:address-ref="address">
    </bean>
    
    </beans>

    二、bean的作用域

      常用的两个作用域就是scope="singleton"和scope="prototype"

    <?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">
        
        <!-- bean的作用域 scope-->
        <bean id="car" class="spring.beans.scope.Car" scope="prototype">
            <property name="name" value="奥迪"></property>
            <property name="price" value="300000"></property>
        </bean>
    
    </beans>
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  • 原文地址:https://www.cnblogs.com/hyyq/p/6701632.html
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