设计模式之工厂方法模式

设计模式之工厂方法模式

实体类：

/** * 包装接口 */public interface Bag {    void pack();}

import com.enjoy.entity.Bag;/** * 苹果包装 * Created by Peter on 10/9 009. */public class AppleBag implements Bag {    @Override    public void pack() {        System.out.print("--苹果使用纸箱包装");    }}

import com.enjoy.entity.Bag;/** * 香蕉包装 */public class BananaBag implements Bag {    @Override    public void pack() {        System.out.print("--香蕉使用竹萝包装");    }}

import com.enjoy.entity.Bag;/** * 包装工厂方法接口 */public interface BagFactory {    Bag getBag();// 打包指令}

import com.enjoy.entity.Bag;import com.enjoy.entity.bag.AppleBag;/** * 苹果-包装工厂方法 */public class AppleBagFactory implements BagFactory {    public Bag getBag(){        return new AppleBag();    }}

import com.enjoy.entity.Bag;import com.enjoy.entity.bag.BananaBag;/** * 香蕉-包装工厂方法模式 */public class BananaBagFactory implements com.enjoy.create.fatory.fatoryMethod.BagFactory {    public Bag getBag() {        return new BananaBag();    }}

import com.enjoy.entity.Fruit;/** * 水果工厂方法接口 */public interface FruitFactory {    public Fruit getFruit(); // 摘水果指令}

import com.enjoy.entity.fruit.Apple;import com.enjoy.entity.Fruit;/** * 苹果-工厂方法 */public class AppleFactory implements FruitFactory {    @Override    public Fruit getFruit() {        return new Apple();    }}

import com.enjoy.entity.fruit.Banana;import com.enjoy.entity.Fruit;/** * 香蕉-工厂方法 */public class BananaFactory implements FruitFactory {    @Override    public Fruit getFruit() {        return new Banana();    }}

客户端
import com.enjoy.entity.Fruit;
import org.springframework.beans.factory.annotation.Autowired;

/**
 * 工厂方法模式测试
 */
public class FactoryClient {
    @Autowired
    private static FruitFactory fruitFactory;

    public static void main(String[] args) {
        // 初始化苹果工厂
        fruitFactory = new AppleFactory(); // spring配置
        peterdo();
        jamesdo();
    }
    //Peter自己吃苹果
    public static void peterdo() {
        Fruit fruit = fruitFactory.getFruit();
        fruit.draw();
        //。。。直接啃着吃，吃掉了
        System.out.println("-----------------");
    }
    //送给james，切开吃苹果
    public static void jamesdo() {
        Fruit fruit = fruitFactory.getFruit();
        fruit.draw();
        //。。。切开吃
        System.out.println("-----------------");
    }
}