5.1FactoryBean的使用

• T getObject():返回有FactoryBean创建的bean实例，如果isSingleton返回true，则该实例会放到Spring容器中单实例缓存池中。
• boolean isSingleton()：返回有FactoryBean创建的bean实例的作用域是singleton还是prototype。
• class<T> getObjectType():返回FactoryBean创建的bean类型。

public class Car{
 	private int maxSpeed;
    private String brand;
    private double price;
}

public class CarFactoryBean implements FactoryBean<Car>{
 	private String carInfo;
    public Car getObject() throw Exception{
        Car car = new Car();
        String[] infos = carInfo.split(",");
        car.setBrand(infos[0]);
        car.setMaxSpeed(infos[1]);
        car.setprice(Double.valueOf(infos[2]));
        return car;
    }
    public Class<T> getObjectType(){
    	return Car.class;    
    }
    public boolean isSingleton(){
     	return false;   
    }
    public String getCarInfo(){
     	return this.carInfo; 
    }
    public void setCarInfo(String carInfo){
     	this.carInfo = carInfo;   
    }
}

XML配置
<bean id="car" class="CarFactoryBean" carInfo="保时捷,218,1280000"></bean>