KFC點餐系統（）
阿新 • • 發佈：2018-12-17
同學們應該都去麥當勞或肯德基吃過快餐吧？請同學們參考肯德基官網的資訊模擬肯德基快餐店的收銀系統，合理使用C++/python/Java,結合設計模式（2種以上）至少實現系統的以下功能：
1.正常餐品結算和找零。
2.基本套餐結算和找零。
3.使用優惠劵購買餐品結算和找零。
4.可在一定時間段參與店內活動（自行設計或參考官網資訊）。
5.模擬列印小票的功能（寫到檔案中）。
類圖：
建立IFood介面實現各類食物資訊的列印：
public interface IFood {
/**
* 列印輸出食物資訊
* @return
*/
String printMesage();
}
抽象類AbstractBaseFood
public class AbstractBaseFood {
// 類別
protected String kind;
// 數量
protected int num;
// 價格
protected float price;
//找零
// 合計
public float totalPrice()
{
return this.num * this.price;
}
}
各類果汁的基類Baverage：
public abstract class Beverage extends AbstractBaseFood implements IFood { public String printMesage() { return ("--" + this.kind + "飲料，\t單價：" + this.price + "，\t數量：" + this.num + "，\t合計：" + this.totalPrice()); } }
建立Baverage的具體實現類ChinaBaverage：
public class ChinaBeverage extends Beverage
{
public ChinaBeverage(int num)
{
this.kind = "可樂";
this.price = 6.0f;
this.num = num;
}
}
以此類推分別建立 ChickenWing，FrenchFries，Hamburg抽象類和它們的實現類ChinaChickenWing,FrenchFries,Hamburg 建立抽象工廠IKfcFactory：
public interface IKfcFactory { // 生產漢堡 public ChinaHamburg createHamburg(int num); // 生產薯條 public xtx.FrenchFries createFrenchFries(int num); // 生產雞翅 public ChinaChickenWings createChickenWings(int num); // 生產飲料 public ChinaBeverage createBeverage(int num); }
建立IKfcFactory的實現類ChinaFactory：
public class ChinaKfcFactory implements IKfcFactory
{
// 生產可樂
public ChinaBeverage createBeverage(int num)
{
return new ChinaBeverage(num);
}
// 生產奧爾良烤雞翅
public ChinaChickenWings createChickenWings(int num)
{
return new ChinaChickenWings(num);
}
// 生產薯條
public ChinaFrenchFries createFrenchFries(int num)
{
return new ChinaFrenchFries(num);
}
// 生產麻辣風味雞腿漢堡
public ChinaHamburg createHamburg(int num)
{
return new ChinaHamburg(num);
}
}
建立Customer類實現食物的選擇和檔案儲存：
package xtx.factory.custom;
import java.io.BufferedWriter;
import java.io.FileWriter;
import java.io.IOException;
import xtx.ChinaBeverage;
import xtx.ChinaChickenWings;
import xtx.ChinaFrenchFries;
import xtx.IKfcFactory;
import xtx.ChinaHamburg;
public class Customer
{
// 抽象工廠
private IKfcFactory kfcFactory;
// 構造方法將抽象工廠作為引數傳入
public Customer(IKfcFactory kfcFactory2)
{
this.kfcFactory = kfcFactory2;
}
/**
* 訂購食物
* @throws IOException
*/
private String s[] =new String[5];
public void showbill() throws IOException{
BufferedWriter bw=new BufferedWriter(new FileWriter("D://workspace2Eclipse//xtx//src//xtx//factory//custom//show.txt",true));
bw.write("---------------------賬單如下---------------------");
bw.newLine();
for(int i=0;i<5;i++){
bw.write(s[i]);
bw.newLine();
bw.flush();
}
}
// 訂購麻辣雞腿漢堡
public float orderHamburg(int num) throws IOException
{
// 獲得麻辣雞腿漢堡
ChinaHamburg hamburg = kfcFactory.createHamburg(num);
// 輸出訂購資訊
System.out.print(hamburg.printMesage());
s[0]=hamburg.printMesage();
System.out.print("\n");
// 返回總價
return hamburg.totalPrice();
}
// 訂購奧爾良烤雞翅
public float orderChickenWings(int num)
{
// 獲得奧爾良烤雞翅
ChinaChickenWings chickenWings = kfcFactory.createChickenWings(num);
// 輸出訂購資訊
System.out.print(chickenWings.printMesage());
s[1]=chickenWings.printMesage();
System.out.print("\n");
// 返回總價
return chickenWings.totalPrice();
}
// 訂購薯條
public float orderFrenchFries(int num)
{
// 獲得薯條
ChinaFrenchFries frenchFries = (ChinaFrenchFries) ((IKfcFactory) kfcFactory).createFrenchFries(num);
// 輸出訂購資訊
System.out.print(frenchFries.printMesage());
s[2]=frenchFries.printMesage();
System.out.print("\n");
// 返回總價
return frenchFries.totalPrice();
}
// 訂購可樂
public float orderBeverage(int num)
{
// 獲得可樂
ChinaBeverage beverage = kfcFactory.createBeverage(num);
// 輸出訂購資訊
System.out.print(beverage.printMesage());
s[3]=beverage.printMesage();
System.out.print("\n");
return beverage.totalPrice();
}
//訂購套餐一
public float ordercombo1(int num)
{
// 獲得可樂
ChinaBeverage beverage = kfcFactory.createBeverage(num);
// 獲得麻辣雞腿漢堡
ChinaHamburg hamburg = kfcFactory.createHamburg(num);
s[4]=("--套餐一,\t單價：21,\t數量："+num+"\t\t合計："+(beverage.totalPrice()+hamburg.totalPrice())+"\n");
System.out.print("--套餐一,\t單價：21,\t數量："+num+"\t\t合計："+(beverage.totalPrice()+hamburg.totalPrice())+"\n");
return beverage.totalPrice()+hamburg.totalPrice();
}
}
MainApp：
package xtx.factory.itf;
import java.io.BufferedWriter;
import java.io.FileWriter;
import java.io.IOException;
import java.util.Scanner;
import xtx.IKfcFactory;
import xtx.factory.custom.Customer;
public class MainApp
{
/**
* 主應用程式方法
*
* @param args
* @throws IOException
*/
public static void main(String[] args) throws IOException
{
/**
* 定義一個肯德基（IKfcFactory型別）
*/
IKfcFactory kfcFactory = (IKfcFactory) new ChinaKfcFactory();
Customer customer = new Customer(kfcFactory);
/**
* 開始點餐
*/
// 一個麻辣雞腿漢堡
Scanner in =new Scanner(System.in);
//System.out.print("請輸入付款金額");
System.out.print("-----現有如下產品-----\n");
System.out.print("--麻辣風味漢堡\t單價：15.0.\n--奧爾良風味雞翅\t單價：3.0\n--普通風味薯條\t單價：8.0\n--可樂飲料\t單價：6.0\n--套餐一（麻辣風味漢堡+可樂飲料）\t單價：21\n");
System.out.print("\n-----------------------");
System.out.print("\n請點餐：\n");
System.out.print("請輸入麻辣風味漢堡數量---：");
int a1=in.nextInt();
System.out.print("請輸入奧爾良風味雞翅數量-：");
int a2=in.nextInt();
System.out.print("普通入風味薯條數量------：");
int a3=in.nextInt();
System.out.print("請輸入可樂飲料數量------：");
int a4=in.nextInt();
System.out.print("請輸入套餐份數---------：");
int a5=in.nextInt();
System.out.print("\n------賬單如下-----\n");
float hamhurgMoney = customer.orderHamburg(a1);
// 四個奧爾良烤雞翅
float chickenWingsMoney = customer.orderChickenWings(a2);
// 一包薯條
float frenchFriesMoney = customer.orderFrenchFries(a3);
// 兩杯可樂
float beverageMoney = customer.orderBeverage(a4);
float combo1=customer.ordercombo1(a5);
//
float sum=hamhurgMoney + chickenWingsMoney + frenchFriesMoney + beverageMoney+combo1;
customer.showbill();
System.out.println("總計：" + (sum));
System.out.print("請輸入付款金額:");
int a=in.nextInt();
System.out.print("找零："+(a-sum));
customer.showbill();
BufferedWriter bw=new BufferedWriter(new FileWriter("D://workspace2Eclipse//xtx//src//xtx//factory//custom//show.txt",true));
bw.write("總計: "+sum);
bw.newLine();
bw.write("付款："+a);
bw.newLine();
float y=a-sum;
bw.write("找零："+y);
bw.newLine();
bw.flush();
bw.close();
}
}
執行結果展示：
檔案儲存：