设计模式-2-抽象工厂方法

一、概述

1-抽象工厂提供一个接口,用于创建相关或者依赖对象的家族,而不需要指定具体的实现类2-设计原则(1)开闭(2)多用组合,少继承抽象工厂和工厂方法的区别(1)工厂通过继承解耦;抽象工厂通过组合解耦(2)工厂用于创建一个抽象产品,具体的工厂用于创建具体的产品;抽象工厂用于创建一个产品家族的抽象类型3-使用场合(1)创建产品家族
(2)提供一个产品库,并只想显示器接口而非实现
========抽象食物接口package SheJiMoShiNaDianShi.AbstractFactory.model; /** * Created by hjw on 16/8/28. * 食物辅助接口,用于实现共性,如打印信息 */public interface IFood {    public void printMessage();}    ========抽象食物  package SheJiMoShiNaDianShi.AbstractFactory.model; /** * Created by hjw on 16/8/28. * 抽象的食物对象 */public abstract class AbstractBaseFood {    //类别    protected String kind;    //数量    protected int num;     //单价    protected float price;     //总价    public float totalPrice() {        return this.num * this.price;    }}  ========抽象食物鸡翅package SheJiMoShiNaDianShi.AbstractFactory.model; /** * Created by hjw on 16/8/28. */public abstract class ChickenWings extends AbstractBaseFood implements IFood{    @Override    public void printMessage() {        System.out.println("----"+this.kind+"风味鸡翅,\t 单价:"+this.price + ", \t数量:"+this.num+                ", \t总计:"+this.totalPrice());    }} ========抽象食物汉堡package SheJiMoShiNaDianShi.AbstractFactory.model; /** * Created by hjw on 16/8/28. * 创建不同食物的抽象类 */public abstract class Hamburg extends AbstractBaseFood implements  IFood{    @Override    public void printMessage() {        System.out.println("----"+this.kind+"风味汉堡,\t 单价:"+this.price + ", \t数量:"+this.num+                ", \t总计:"+this.totalPrice());    }}    ========具体食物鸡翅package SheJiMoShiNaDianShi.AbstractFactory.model.kfc; import SheJiMoShiNaDianShi.AbstractFactory.model.ChickenWings; /** * Created by hjw on 16/8/28. * 鸡翅实现类 */public class ChinaChickenWings extends ChickenWings {    /**     * 构造函数     * @param kind     * @param price     * @param num     */    public ChinaChickenWings(String kind,float price,int num) {        this.kind = kind;        this.price = price;        this.num = num;    } }    ========具体食物汉堡package SheJiMoShiNaDianShi.AbstractFactory.model.kfc; import SheJiMoShiNaDianShi.AbstractFactory.model.Hamburg; /** * Created by hjw on 16/8/28. * 创建具体的食物 */public class ChinaHamburg extends Hamburg {    /**     * 构造函数     * @param kind     * @param price     * @param num     */    public ChinaHamburg(String kind,float price,int num) {        this.kind = kind;        this.price = price;        this.num = num;    }}    ========抽象工厂接口package SheJiMoShiNaDianShi.AbstractFactory.itf; import SheJiMoShiNaDianShi.AbstractFactory.model.ChickenWings;import SheJiMoShiNaDianShi.AbstractFactory.model.Hamburg; /** * Created by hjw on 16/8/28. * 抽象工厂接口 */public interface IKfcFactory {    public Hamburg creatHamburg(String kind,float price,int num);    public ChickenWings creatChichenWings(String kind,float price,int num);}  ========具体工厂package SheJiMoShiNaDianShi.AbstractFactory.itf; import SheJiMoShiNaDianShi.AbstractFactory.model.ChickenWings;import SheJiMoShiNaDianShi.AbstractFactory.model.Hamburg;import SheJiMoShiNaDianShi.AbstractFactory.model.kfc.ChinaChickenWings;import SheJiMoShiNaDianShi.AbstractFactory.model.kfc.ChinaHamburg; /** * Created by hjw on 16/8/28. * 具体的工厂 */public class ChinaKfcFactory implements IKfcFactory {    @Override    public Hamburg creatHamburg(String kind, float price, int num) {        return new ChinaHamburg(kind, price, num);    }     @Override    public ChickenWings creatChichenWings(String kind, float price, int num) {        return new ChinaChickenWings(kind, price, num);    }}  =====客户类-通过工厂暴露的方法实现具体对象的创建package SheJiMoShiNaDianShi.AbstractFactory.custom; import SheJiMoShiNaDianShi.AbstractFactory.itf.IKfcFactory;import SheJiMoShiNaDianShi.AbstractFactory.model.ChickenWings;import SheJiMoShiNaDianShi.AbstractFactory.model.Hamburg; /** * Created by hjw on 16/8/28. * 客户类-通过工厂暴露的方法实现具体对象的创建 */public class Custom {    IKfcFactory iKfcFactory;     public Custom(IKfcFactory iKfcFactory) {        this.iKfcFactory = iKfcFactory;    }     public float orderHamburg(String kind, float price, int num){        Hamburg hamburg =  iKfcFactory.creatHamburg(kind, price, num);        hamburg.printMessage();        return hamburg.totalPrice();    }     public float orderChickenWings(String kind, float price, int num){        ChickenWings chickenWings = iKfcFactory.creatChichenWings(kind, price, num);        chickenWings.printMessage();        return chickenWings.totalPrice();    }}  =====apppackage SheJiMoShiNaDianShi.AbstractFactory; import SheJiMoShiNaDianShi.AbstractFactory.custom.Custom;import SheJiMoShiNaDianShi.AbstractFactory.itf.ChinaKfcFactory;import SheJiMoShiNaDianShi.AbstractFactory.itf.IKfcFactory; /** * Created by hjw on 16/8/28. */public class MainApp {    public static void main(String[] args) {        IKfcFactory iKfcFactory = new ChinaKfcFactory();         Custom custom = new Custom(iKfcFactory);         float hamburgMoney = custom.orderHamburg("麻辣", 1.2f, 2);        float chichenWingsMoney = custom.orderChickenWings("奥尔良", 2, 4);        System.out.println("总计: " + (hamburgMoney + chichenWingsMoney));    }}