工厂模式

最新推荐文章于 2025-07-17 11:44:24 发布

原创最新推荐文章于 2025-07-17 11:44:24 发布 · 212 阅读

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3 篇文章

订阅专栏

1，静态模式

类图

产品接口

package com.hg.demo.simplemode;

/**
 * 泡面接口
 */
public interface InstantNoodle {

    /**
     * 泡面价格
     * @return
     */
    String noodlePrice();


    /**
     * 面条口味
     * @return
     */
    String noodleFlavor();


    /**
     * 泡面分量
     * @return
     */
    String noodleWeight();


}

产品实现1

package com.hg.demo.simplemode;


/**
 * 康师傅面
 */
public class KangShiFuNoodle implements InstantNoodle{

    @Override
    public String noodlePrice() {
        return "5.5元";
    }

    @Override
    public String noodleFlavor() {
        return "香辣味";
    }

    @Override
    public String noodleWeight() {
        return "220克";
    }
}

产品实现2

package com.hg.demo.simplemode;


/**
 * 老谭酸菜面
 */
public class LaoTanNoodle implements InstantNoodle{

    @Override
    public String noodlePrice() {
        return "4.5元";
    }

    @Override
    public String noodleFlavor() {
        return "酸辣味";
    }

    @Override
    public String noodleWeight() {
        return "200克";
    }
}

工厂静态方法

package com.hg.demo.simplemode;

public class SimpleFactory {


    public static final int TYPE_LT = 1;//老谭
    public static final int TYPE_KSF = 2;//康师傅

    public static InstantNoodle createNoodle(int type){
        switch (type){
            case TYPE_LT:
                return new LaoTanNoodle();
            case TYPE_KSF:
                return new KangShiFuNoodle();
            default:
                return null;
        }
    }

}

客户端调用工厂静态方法生产产品

package com.hg.demo.simplemode;

public class Client {

    public static void main(String[] args) {
        InstantNoodle instantNoodle = SimpleFactory.createNoodle(SimpleFactory.TYPE_LT);
        System.out.println("价格："+instantNoodle.noodlePrice());
        System.out.println("口味："+instantNoodle.noodleFlavor());
        System.out.println("分量："+instantNoodle.noodleWeight());
    }

}

2，工厂方法模式

类图

产品接口

package com.hg.demo.simplemode;

/**
 * 泡面接口
 */
public interface InstantNoodle {

    /**
     * 泡面价格
     * @return
     */
    String noodlePrice();


    /**
     * 面条口味
     * @return
     */
    String noodleFlavor();


    /**
     * 泡面分量
     * @return
     */
    String noodleWeight();


}

产品实现1

package com.hg.demo.simplemode;


/**
 * 康师傅面
 */
public class KangShiFuNoodle implements InstantNoodle{

    @Override
    public String noodlePrice() {
        return "5.5元";
    }

    @Override
    public String noodleFlavor() {
        return "香辣味";
    }

    @Override
    public String noodleWeight() {
        return "220克";
    }
}

产品实现2

package com.hg.demo.simplemode;


/**
 * 老谭酸菜面
 */
public class LaoTanNoodle implements InstantNoodle{

    @Override
    public String noodlePrice() {
        return "4.5元";
    }

    @Override
    public String noodleFlavor() {
        return "酸辣味";
    }

    @Override
    public String noodleWeight() {
        return "200克";
    }
}

工厂接口

package com.hg.demo.methodmode;

public interface BaseFactory {

    InstantNoodle createNoodle(String noodleType);

}

工厂接口实现

package com.hg.demo.methodmode;

public class NoodleFactory implements BaseFactory{

    public static final String TYPE_LT = "LT";//老谭
    public static final String TYPE_KSF = "KSF";//康师傅

    @Override
    public InstantNoodle createNoodle(String noodleType) {
        if("LT".equals(noodleType)){
            return new LaoTanNoodle();
        }else if("KSF".equals(noodleType)){
            return new KangShiFuNoodle();
        }
        return null;
    }
}

客户端

package com.hg.demo.methodmode;

public class Client {

    public static void main(String[] args) {
        BaseFactory factory = new NoodleFactory();
        InstantNoodle noodle = factory.createNoodle("LT");
        System.out.println("价格："+noodle.noodlePrice());
        System.out.println("口味："+noodle.noodleFlavor());
        System.out.println("分量："+noodle.noodleWeight());
    }

}

总结：个人感觉工厂静态模式和工厂方法模式只是工厂实现中一个是静态方法创建产品实例，一个是接口方法创建产品实例，

两种在增加新产品时，都需要修改工厂中的方法，两种模式可能是用到的地方不同，可能我理解还不是很深