通过FactoryBean配置Bean

public class CarFactoryBean implements FactoryBean<Car>{   //实现FactoryBean接口
	private String brand;
	public void setBrand(String brand){
		this.brand = brand;
	}
	//返回bean对象
	@override
	public Car getObjeect() throws Exception{
		return new Car(brand,500000);
	}
	@override
	public Class<?> getObjectType()
	{
		return Car.class;
	}
	@override
		public boolean isSingleton(){
		return true;
	}
}

xml配置

通过FactoryBean来配置Bean的实例

property：配置FactoryBean的属性，但实际返回的实例是FactoryBean的getObject（）方法

<bean id="car" class="...CarFactoryBean">
	<property name="brand" value="BMW"></property>
</bean>