spring--(3)引用其余的bean

有以下两个类
//car类

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

//person类

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

很明显，person类引用了car类，xml中配置以下

<!-- 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>
		<!-- 外部bean -->
		<!-- 使用property的ref属性创建bean之间的引用关系 -->
		<!-- <property name="car" ref="car"></property> -->
		
		<!-- 内部bean，不须要写id，他不能为外部bean引用 -->
		<property name="car">
			<bean class="com.test.spring.beans.Car">
				<property name="name" value="ford"></property>
				<property name="address" value="chengdu"></property>
				<property name="price" value="15"></property>
			</bean>
		</property>
	</bean>