工廠方法模式: 又稱工廠模式，通過(guò)定義工廠父類負(fù)責(zé)定義創(chuàng)建對(duì)象的公共接口，而子類則負(fù)責(zé)生成具體的對(duì)象。
導(dǎo)致類個(gè)數(shù)過(guò)多

//鼠標(biāo)產(chǎn)品
public interface Mouse {
    void printBrand();
}
//戴爾鼠標(biāo)
public class DellMouse implements Mouse {
    @Override
    public void printBrand() {
        System.out.println("DELL MOUSE");
    }
}
//惠普鼠標(biāo)
public class HpMouse implements Mouse {
    @Override
    public void printBrand() {
        System.out.println("HP MOUSE");
    }
}

//鼠標(biāo)工廠接口
public interface MouseFactory {
    Mouse getMouse();
}
//戴爾鼠標(biāo)工廠
public class DellMouseFactory implements MouseFactory {
    @Override
    public Mouse getMouse() {
        return new DellMouse();
    }
}
//惠普鼠標(biāo)工廠
public class HpMouseFactory implements MouseFactory {
    @Override
    public Mouse getMouse() {
        return new HpMouse();
    }
}

//測(cè)試
@SpringBootApplication
public class App {
    public static void main(String[] args) {
        SpringApplication.run(App.class);
        MouseFactory mouseFactory = new HpMouseFactory();
        mouseFactory.getMouse().printBrand();
    }
}