Spring的实例工厂方法和静态工厂方法实例代码

 package com.zhu.string.factory; import java.util.HashMap; import java.util.Map; public class StaticCarFactory { /** * 静态工厂方法：直接调用静态方法可以返回Bean的实例 * */ private static Map cars=new HashMap(); static{ cars.put("audi",  new Car(3000, "aodi")); cars.put("fodo",  new Car(3000, "aodi")); } //静态工厂方法 public static Car getCar(String name){ return cars.get(name); } } 

 package com.zhu.string.factory; import java.util.HashMap; import java.util.Map; public class InstanceCarFactory { /** * 实例工厂方法。即调用工厂本身，再调用工厂的实例方法来返回bean实例 */ private Map cars=null; public InstanceCarFactory() { // TODO Auto-generated constructor stub cars=new HashMap(); cars.put("audi", new Car(1000,"audi")); cars.put("dffdas", new Car(2000,"audi")); } public Car getCar(String brand){ return cars.get(brand); } } 

 package com.zhu.string.factory; public class Car { private double price; private String brand; public double getPrice() { return price; } public void setPrice(double price) { this.price = price; } public String getBrand() { return brand; } public void setBrand(String brand) { this.brand = brand; } @Override public String toString() { return "Car [brand=" + brand + ", price=" + price + "]"; } public Car(){ System.out.println("cars....constructor"); } public Car(double price, String brand) { super(); this.price = price; this.brand = brand; } }

 package com.zhu.string.factory; import org.springframework.context.ApplicationContext; import org.springframework.context.support.ClassPathXmlApplicationContext; public class Main { /** * @param args */ public static void main(String[] args) { // TODO Auto-generated method stub ApplicationContext cx=new ClassPathXmlApplicationContext("beans- factory.xml"); Car car1=(Car) cx.getBean("car1"); System.out.println(car1); Car car2=(Car) cx.getBean("car2"); System.out.println(car2); } }