spring 7 bean配置--spEL

1 seEL能调用静态方法or属性

<bean id="car" class="mdd.study.beans.relation.Car">
<property name="brand" value="Audi"></property>
<property name="price" value="300000"></property>
<property name="tyrePerimeter" value="#{T(java.lang.Math).PI*80}"></property>
</bean>

2 可以用来引用其他的bean，也可以用来引用其他的bean属性，且spEL里能使用运算符

<bean id="car" class="mdd.study.beans.relation.Car">
<property name="brand" value="Audi"></property>
<property name="price" value="300000"></property>
<property name="tyrePerimeter" value="#{T(java.lang.Math).PI*80}"></property>
</bean>

<bean id="address" class="mdd.study.beans.relation.Address">
<property name="city" value="WuHan"></property>
<property name="street" value="JieDaoKou"></property>
</bean>

<bean id="person" class="mdd.study.beans.relation.Person">
<property name="car" value="#{car}"></property>
<property name="city" value="#{address.city}"></property>
<property name="info" value="#{car.price>300000?'金领':'白领'}"></property>
</bean>