list:
<bean id="userAction" class="com.xx.action.UserAction">
<property name="list">
<list>
<value>哈哈</value>
<value>嘻嘻</value>
<value>嘎嘎</value>
</list>
</property>
</bean>
set:
<bean id="userAction" class="com.xx.action.UserAction">
<property name="set">
<set>
<value>哈哈</value>
<value>嘻嘻</value>
<value>嘎嘎</value>
</set>
</property>
</bean>