byName 方式
 <!--byName约束:bean当中的域属性名必须跟所注入bean的id相同-->
<bean id="student" class="cn.spring.entity.Student" autowire="byName">
<property name="stu_id" value="1"></property>
<property name="stu_name" value="张三"></property>
</bean> <bean id="teacher" class="cn.spring.entity.Teacher">
<property name="t_id" value="1"></property>
<property name="t_name" value="王洪涛"></property>
</bean>
 
bean当中的域属性名必须跟所注入bean的id相同
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" 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" alt="" />
 
 byType 方式
<!--byType:要求被注入域属性类型只能唯一,与其向兼容的类型也同样不可以-->
<bean id="student2" class="cn.spring.entity.Student" autowire="byType">
<property name="stu_id" value="1"></property>
<property name="stu_name" value="张三"></property>
</bean> <bean id="teacher" class="cn.spring.entity.Teacher">
<property name="t_id" value="1"></property>
<property name="t_name" value="王洪涛"></property>
</bean>
这里的teacher类型在student中只能存在一个才能使用byType自动装配,如果出现同类型(同类型的子类),都无法实现自动装配
 
 
 
 
 
 
 

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