spring的構造器注入

//使用構造器注入 public InjectionServiceImpl(InjectionDAO injectionDAO){ this.injectionDAO=injectionDAO; }

//鍵值注入
public void setInjectionDAO(InjectionDAO injectionDAO) {
	this.injectionDAO = injectionDAO;
}

<bean id="injectionService" class="mao.mao.injection.InjectionServiceImpl"> <constructor-arg name="injectionDAO" ref="injectionDao"/> </bean>

<bean id="injectionDao" class="mao.mao.injection.InjectionDAOImpl">
	</bean>

<bean id="injectionService" class="mao.mao.injection.InjectionServiceImpl"> <property name="injectionDAO" ref="injectionDao"/> </bean>

<bean id="injectionDao" class="mao.mao.injection.InjectionDAOImpl">
	</bean>