spring的list注入多个值

1. <bean class="com.aaa.beans.list.Student" id="student1" p:name="张三" p:age="18" p:grade-ref="grade" />
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   <!-- stu2 -->
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   <bean class="com.aaa.beans.list.Student" id="student2" p:name="李四" p:age="28" p:grade-ref="grade" />
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   <!-- stu3 -->
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   <bean class="com.aaa.beans.list.Student" id="student3" p:name="王二" p:age="38" p:grade-ref="grade" />
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   <!-- grade -->
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    <bean class="com.aaa.beans.list.Grade" id="grade">
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    <property name="name" value="一班"></property>
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    <property name="students">
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    <list>
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    <ref bean="student1"/>
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    <ref bean="student2"/>
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    <ref bean="student3"/>
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    </list>
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    </property>
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    </bean>
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21. 有点繁琐啊  了解就好