java工厂设计模式

最新推荐文章于 2025-06-01 19:34:47 发布

weixin_44692763

最新推荐文章于 2025-06-01 19:34:47 发布

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分类专栏： Java-- 文章标签： java

本文链接：https://blog.youkuaiyun.com/weixin_44692763/article/details/109075900

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原始模式

package com.design.simplefactory;

public abstract class Pizza {
    protected String name; //名字

    //准备原材料, 不同的披萨不一样，因此，我们做成抽象方法
    public abstract void prepare();


    public void bake() {
        System.out.println(name + " baking;");
    }

    public void cut() {
        System.out.println(name + " cutting;");
    }

    //打包
    public void box() {
        System.out.println(name + " boxing;");
    }

    public void setName(String name) {
        this.name = name;
    }
}
package com.design.simplefactory;

public abstract class Pizza {
    protected String name; //名字

    //准备原材料, 不同的披萨不一样，因此，我们做成抽象方法
    public abstract void prepare();


    public void bake() {
        System.out.println(name + " baking;");
    }

    public void cut() {
        System.out.println(name + " cutting;");
    }

    //打包
    public void box() {
        System.out.println(name + " boxing;");
    }

    public void setName(String name) {
        this.name = name;
    }
}

package com.design.simplefactory;

public class GeekPizza extends Pizza {
    @Override
    public void prepare() {
        System.out.println(" 给制作希腊披萨 准备原材料 ");
    }
}

package com.design.simplefactory;

public class CheesePizza extends Pizza {
    @Override
    public void prepare() {
        System.out.println(" 给制作奶酪披萨 准备原材料 ");
    }
}

package com.design.simplefactory;

import org.junit.Test;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;

public class OrderPizza  {

    public OrderPizza(){
        Pizza pizza=null;
        String orderType=getType();
        do {
            orderType=getType();
            if (orderType.equals("greek")){
                pizza=new GeekPizza();
                pizza.setName(" 希腊披萨 ");
            }else if (orderType.equals("cheese")){
                pizza=new CheesePizza();
                pizza.setName(" 奶酪披萨 ");
            }else {
                break;
            }
            pizza.prepare();
            pizza.bake();;
            pizza.cut();
            pizza.box();
        }while (true);

    }

    public String  getType(){

        try {
            BufferedReader reader=new BufferedReader(new InputStreamReader(System.in));
            System.out.println("input pizza 种类:");
            String str = null;
            str = reader.readLine();
            return str;
        } catch (IOException e) {
            e.printStackTrace();
            return null;
        }

    }
}

简单工厂模式的优化

增加了SimpleFactory

package com.design.simplefactory;

public class SimpleFactory {
    //简单工厂模式 也叫 静态工厂模式

    public static Pizza createPizza2(String orderType) {

        Pizza pizza = null;

        System.out.println("使用简单工厂模式2");
        if (orderType.equals("greek")) {
            pizza = new GeekPizza();
            pizza.setName(" 希腊披萨 ");
        } else if (orderType.equals("cheese")) {
            pizza = new CheesePizza();
            pizza.setName(" 奶酪披萨 ");
        }

        return pizza;
    }
}

package com.design.simplefactory;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;

public class OrderPizzaTwo {

    Pizza pizza = null;
    String orderType = "";
    // 构造器
    public OrderPizzaTwo() {

        do {
            orderType = getType();
            pizza = SimpleFactory.createPizza2(orderType);

            // 输出pizza
            if (pizza != null) { // 订购成功
                pizza.prepare();
                pizza.bake();
                pizza.cut();
                pizza.box();
            } else {
                System.out.println(" 订购披萨失败 ");
                break;
            }
        } while (true);
    }

    // 写一个方法，可以获取客户希望订购的披萨种类
    private String getType() {
        try {
            BufferedReader strin = new BufferedReader(new InputStreamReader(System.in));
            System.out.println("input pizza 种类:");
            String str = strin.readLine();
            return str;
        } catch (IOException e) {
            e.printStackTrace();
            return "";
        }
    }
}

工厂方法模式

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package com.atguigu.factory.factorymethod.pizzastore.pizza;

//将Pizza 类做成抽象
public abstract class Pizza {
	protected String name; //名字

	//准备原材料, 不同的披萨不一样，因此，我们做成抽象方法
	public abstract void prepare();

	
	public void bake() {
		System.out.println(name + " baking;");
	}

	public void cut() {
		System.out.println(name + " cutting;");
	}

	//打包
	public void box() {
		System.out.println(name + " boxing;");
	}

	public void setName(String name) {
		this.name = name;
	}
}

package com.atguigu.factory.factorymethod.pizzastore.pizza;

public class BJCheesePizza extends Pizza {

	@Override
	public void prepare() {
		// TODO Auto-generated method stub
		setName("北京的奶酪pizza");
		System.out.println(" 北京的奶酪pizza 准备原材料");
	}

}

package com.atguigu.factory.factorymethod.pizzastore.pizza;

public class BJPepperPizza extends Pizza {
	@Override
	public void prepare() {
		// TODO Auto-generated method stub
		setName("北京的胡椒pizza");
		System.out.println(" 北京的胡椒pizza 准备原材料");
	}
}

package com.atguigu.factory.factorymethod.pizzastore.pizza;

public class LDCheesePizza extends Pizza{

	@Override
	public void prepare() {
		// TODO Auto-generated method stub
		setName("伦敦的奶酪pizza");
		System.out.println(" 伦敦的奶酪pizza 准备原材料");
	}
}

package com.atguigu.factory.factorymethod.pizzastore.pizza;

public class LDPepperPizza extends Pizza{
	@Override
	public void prepare() {
		// TODO Auto-generated method stub
		setName("伦敦的胡椒pizza");
		System.out.println(" 伦敦的胡椒pizza 准备原材料");
	}
}


package com.atguigu.factory.factorymethod.pizzastore.order;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;

import com.atguigu.factory.factorymethod.pizzastore.pizza.Pizza;




public abstract class OrderPizza {

	//定义一个抽象方法，createPizza , 让各个工厂子类自己实现
	abstract Pizza createPizza(String orderType);
	
	// 构造器
	public OrderPizza() {
		Pizza pizza = null;
		String orderType; // 订购披萨的类型
		do {
			orderType = getType();
			pizza = createPizza(orderType); //抽象方法，由工厂子类完成
			//输出pizza 制作过程
			pizza.prepare();
			pizza.bake();
			pizza.cut();
			pizza.box();
			
		} while (true);
	}
	// 写一个方法，可以获取客户希望订购的披萨种类
	private String getType() {
		try {
			BufferedReader strin = new BufferedReader(new InputStreamReader(System.in));
			System.out.println("input pizza 种类:");
			String str = strin.readLine();
			return str;
		} catch (IOException e) {
			e.printStackTrace();
			return "";
		}
	}

}

package com.atguigu.factory.factorymethod.pizzastore.order;

import com.atguigu.factory.factorymethod.pizzastore.pizza.BJCheesePizza;
import com.atguigu.factory.factorymethod.pizzastore.pizza.BJPepperPizza;
import com.atguigu.factory.factorymethod.pizzastore.pizza.Pizza;


public class BJOrderPizza extends OrderPizza {

	
	@Override
	Pizza createPizza(String orderType) {
	
		Pizza pizza = null;
		if(orderType.equals("cheese")) {
			pizza = new BJCheesePizza();
		} else if (orderType.equals("pepper")) {
			pizza = new BJPepperPizza();
		}
		// TODO Auto-generated method stub
		return pizza;
	}

}

package com.atguigu.factory.factorymethod.pizzastore.order;

import com.atguigu.factory.factorymethod.pizzastore.pizza.BJCheesePizza;
import com.atguigu.factory.factorymethod.pizzastore.pizza.BJPepperPizza;
import com.atguigu.factory.factorymethod.pizzastore.pizza.LDCheesePizza;
import com.atguigu.factory.factorymethod.pizzastore.pizza.LDPepperPizza;
import com.atguigu.factory.factorymethod.pizzastore.pizza.Pizza;


public class LDOrderPizza extends OrderPizza {

	
	@Override
	Pizza createPizza(String orderType) {
	
		Pizza pizza = null;
		if(orderType.equals("cheese")) {
			pizza = new LDCheesePizza();
		} else if (orderType.equals("pepper")) {
			pizza = new LDPepperPizza();
		}
		// TODO Auto-generated method stub
		return pizza;
	}

}

package com.atguigu.factory.factorymethod.pizzastore.order;

public class PizzaStore {

	public static void main(String[] args) {
		String loc = "bj";
		if (loc.equals("bj")) {
			//创建北京口味的各种Pizza
			new BJOrderPizza();
		} else {
			//创建伦敦口味的各种Pizza
			new LDOrderPizza();
		}
		// TODO Auto-generated method stub
	}

}