Spring 注入方式

Spring的两种注入
构造器注入
设置注入

构造器注入xml：

    <bean id="injectionService" class="com.imooc.ioc.injection.service.InjectionServiceImpl">        <constructor-arg name="injectionDAO" ref="injectionDAO"></constructor-arg>    </bean>    <bean id="injectionDAO" class="com.imooc.ioc.injection.dao.InjectionDAOImpl">

设置注入：

   <bean id="injectionService" class="com.imooc.ioc.injection.service.InjectionServiceImpl">     <property name="injectionDAO" ref="injectionDAO"></property>     </bean>