public class WQ {int x; } 

public static void main(String[] args) {WQ wq = new WQ();}

@Autowired
private WQ wq;

public class Car {public Car() {}private String brand;private double price;public Car(String brand, double price) {super();this.brand = brand;this.price = price;}public String getBrand() {return brand;}public void setBrand(String brand) {this.brand = brand;}public double getPrice() {return price;}public void setPrice(double price) {this.price = price;}
}

public class StaticCarFactoty {private static Map<String , Car > cars = new HashMap<String ,Car>();static {cars.put("Audi", new Car("Audi",300000));cars.put("Ford", new Car("Ford",200000));}public static Car getCar(String name) {return cars.get(name);}
}

<!--class要写工厂的类；factory-method要写工厂类中用于创建bean的方法-->
<bean id="car1" class="com.wq.factory.StaticCarFactoty"factory-method="getCar">
<constructor-arg value="Audi"></constructor-arg>
</bean>

public class InstanceCarFactory {private Map<String,Car> cars =null;public InstanceCarFactory() {// TODO Auto-generated constructor stubcars = new HashMap<String,Car>();cars.put("Audi", new Car("Audi",300000));cars.put("Ford", new Car("Ford",200000));}public Car getCar(String brand) {return cars.get(brand);}
}

<!-- 通过实例工厂方法，需先实例工厂 -->
<bean id="Carfactory" class="com.wq.factory.InstanceCarFactory"></bean>
<!-- 配置bean -->
<bean id="car2" factory-bean="Carfactory" factory-method="getCar"><constructor-arg value="Ford"></constructor-arg>
</bean>

<bean id="car3" class="com.wq.enties.Car"><property name="brand" value="BMW"></property><property name="price" value="400000"></property>
</bean>

<bean id="car4" class="com.wq.enties.Car"><constructor-arg value="Benz" index="0"></constructor-arg><constructor-arg value="800000" index="1"></constructor-arg>
</bean>

<bean id="car4" class="com.wq.enties.Car"><constructor-arg value="800000" type="java.lang.Double"></constructor-arg><constructor-arg value="Benz" type="java.lang.String"></constructor-arg>
</bean>