spring--(4)級聯屬性賦值

兩個類以下
//person

public class Person {
	private String name;
	private int age;
	private Car car;
}

//car類

public class Car {
	private String name;
	private String address;
	private double price;
}

以下是在person類中給car類中的屬性設值，稱之爲級聯屬性賦值

<!-- 配置bean -->
	<bean id="car" class="com.test.spring.beans.Car">
		<property name="name" value="audi"></property>
		<property name="address" value="shanghai"></property>
		<!-- <property name="price" value="200"></property> -->
	</bean>
	
	<!-- 引用bean -->
	<bean id="person" class="com.test.spring.beans.Person">
		<property name="name" value="zhangsan"></property>
		<property name="age" value="30"></property>
		<!-- 使用property的ref屬性創建bean之間的引用關係 -->
		<property name="car" ref="car"></property>
		<!-- 爲級聯屬性賦值，首先必須引用級聯屬性的類 -->
		<property name="car.price" value="35"></property>
	</bean>