spring之setter注入

<bean id="userAction" class="com.xx.action.UserAction">
<!--第一种-->
<property name="age" value="13"></property>
<!--第二种-->
<property name="name">
<value>孙权</value>
</property>
</bean>

<bean id="userAction" class="com.xx.action.UserAction">
<property name="userService" ref="userService"></property>
</bean>

<bean id="userService" class="com.xx.service.UserServiceImpl">
<property name="eat" value="吃水果"></property>
</bean>