Java外卖点餐系统「附源码」

转载

mob604756fc844f 2021-09-15 11:48:00

tips：

菜品类(菜品id，菜品名，菜品类型，上架时间，单价，月销售，总数量)
管理员类(管理员id，账号，密码)
客户类(客户id，客户名，性别，密码，送餐地址，手机号，创建时间)
订单类(订单号，订单创建时间，菜品id，购买数，客户id，总价格，订单状态)
说明：

菜品类型可自行设计数据类型(int或String)，如1：面食 2：米饭 3：湘菜 …
菜品上架时间、客户创建时间、订单创建时间根据添加时间自动分配系统时间
订单状态类型为int（0:未支付 1：已支付 2：配送中 3：已完成）
要求实现如下功能：
实现不同角色用户登录系统
(1) 管理员登录系统看到如下菜单：① 添加菜品② 查看所有菜品信息(包含分页功能)③ 查看指定类别的菜品信息④ 根据菜品id修改菜品价格⑤ 删除指定id的菜品⑥ 添加客户⑦ 查看客户列表⑧ 删除指定id的客户⑨ 订单列表显示⑩ 根据订单id修改订单状态11 退出(2) 客户登录看到如下菜单：① 显示所有菜品(按菜品销量从高到低排序输出)-------->点餐（输入菜品id和购买数量）② 根据菜品类别显示所有菜品③ 查看所有订单(当前登录用户的)④ 修改密码（当前登录用户的）⑤ 个人信息显示

以上就是全部要求，首先咱们可以先建一个接口，方便对四个管理类进行操作；

package com.softeem.lesson23.test2;


import java.util.List;


public interface DAO<T> {
  void insert(T t);
  T findById(String id);
  List<T> findAll();
  void delete(String id);
}

一、再根据要求，先把四个类的属性类建立起来：

1. Admin类（管理员类）

package com.softeem.lesson23.test2;


public class Admin {
  private String aID;
  private String account;
  private String apwd;
  public Admin() {
    // TODO Auto-generated constructor stub
  }
  public Admin(String aID, String account, String apwd) {
    super();
    this.aID = aID;
    this.account = account;
    this.apwd = apwd;
  }
  public String getaID() {
    return aID;
  }
  public void setaID(String aID) {
    this.aID = aID;
  }
  public String getAccount() {
    return account;
  }
  public void setAccount(String account) {
    this.account = account;
  }
  public String getApwd() {
    return apwd;
  }
  public void setApwd(String apwd) {
    this.apwd = apwd;
  }
  @Override
  public String toString() {
    return "Admin [aID=" + aID + ", account=" + account + ", apwd=" + apwd + "]";
  }
  
}

2. Dishes类（菜品类）

package com.softeem.lesson23.test2;


import java.time.LocalDate;


public class Dishes {
  private String dID;
  private String dname;
  private String dtype;
  private LocalDate dtime;
  private double price;
  private int dsales;
  private int dstocks;


  public Dishes() {
    // TODO Auto-generated constructor stub
  }


  public Dishes(String dID, String dname, String dtype, LocalDate dtime, double price, int dsales, int dstocks) {
    super();
    this.dID = dID;
    this.dname = dname;
    this.dtype = dtype;
    this.dtime = dtime;
    this.price = price;
    this.dsales = dsales;
    this.dstocks = dstocks;
  }


  public String getdID() {
    return dID;
  }


  public void setdID(String dID) {
    this.dID = dID;
  }


  public String getDname() {
    return dname;
  }


  public void setDname(String dname) {
    this.dname = dname;
  }


  public String getDtype() {
    return dtype;
  }


  public void setDtype(String dtype) {
    this.dtype = dtype;
  }


  public LocalDate getDtime() {
    return dtime;
  }


  public void setDtime(LocalDate dtime) {
    this.dtime = dtime;
  }


  public double getPrice() {
    return price;
  }


  public void setPrice(double price) {
    this.price = price;
  }


  public int getDsales() {
    return dsales;
  }


  public void setDsales(int dsales) {
    this.dsales = dsales;
  }


  public int getDstocks() {
    return dstocks;
  }


  public void setDstocks(int dstocks) {
    this.dstocks = dstocks;
  }


  @Override
  public String toString() {
    return "Dishes [菜品id：" + dID + ", 菜品名：" + dname + ", 菜品类型：" + dtype + ", 上架时间：" + dtime + ", 单价：" + price
        + ", 月销量：" + dsales + ", 总数量：" + dstocks + "]";
  }


}

3. Order类（订单类）

package com.softeem.lesson23.test2;


import java.time.LocalDateTime;


public class Order {
  private String OrderID;
  private LocalDateTime utime;
  private Dishes dishes;
  private int Ordernum;
  private String uID;
  private Double Orderprice;
  private int OrderValue;


  public Order() {
    // TODO Auto-generated constructor stub
  }


  public Order(String orderID, LocalDateTime utime, Dishes dishes, int ordernum, String uID, Double orderprice,
      int orderValue) {
    super();
    OrderID = orderID;
    this.utime = utime;
    this.dishes = dishes;
    Ordernum = ordernum;
    this.uID = uID;
    Orderprice = orderprice;
    OrderValue = orderValue;
  }


  public String getOrderID() {
    return OrderID;
  }


  public void setOrderID(String orderID) {
    OrderID = orderID;
  }


  public LocalDateTime getUtime() {
    return utime;
  }


  public void setUtime(LocalDateTime utime) {
    this.utime = utime;
  }


  public Double getOrderprice() {
    return Orderprice;
  }


  public void setOrderprice(Double orderprice) {
    Orderprice = orderprice;
  }


  public Dishes getDishes() {
    return dishes;
  }


  public void setDishes(Dishes dishes) {
    this.dishes = dishes;
  }


  public int getOrdernum() {
    return Ordernum;
  }


  public void setOrdernum(int ordernum) {
    Ordernum = ordernum;
  }


  public String getuID() {
    return uID;
  }


  public void setuID(String uID) {
    this.uID = uID;
  }


  public int getOrderValue() {
    return OrderValue;
  }


  public void setOrderValue(int orderValue) {
    OrderValue = orderValue;
  }


  @Override
  public String toString() {
    return "Order [OrderID=" + OrderID + ", utime=" + utime + ", dishes=" + dishes + ", Ordernum=" + Ordernum
        + ", uID=" + uID + ", Orderprice=" + Orderprice + ", OrderValue=" + OrderValue + "]";
  }


}

4. User类（用户类）

package com.softeem.lesson23.test2;


import java.time.LocalDateTime;


public class User {
  private String uID;
  private String uname;
  private String usex;
  private String upwd;
  private String uadress;
  private String utel;
  private LocalDateTime utime;


  public User() {
    // TODO Auto-generated constructor stub
  }


  public User(String uID, String uname, String usex, String upwd, String uadress, String utel, LocalDateTime utime) {
    super();
    this.uID = uID;
    this.uname = uname;
    this.usex = usex;
    this.upwd = upwd;
    this.uadress = uadress;
    this.utel = utel;
    this.utime = utime;
  }


  public String getuID() {
    return uID;
  }


  public void setuID(String uID) {
    this.uID = uID;
  }


  public String getUname() {
    return uname;
  }


  public void setUname(String uname) {
    this.uname = uname;
  }


  public String getUsex() {
    return usex;
  }


  public void setUsex(String usex) {
    this.usex = usex;
  }


  public String getUpwd() {
    return upwd;
  }


  public void setUpwd(String upwd) {
    this.upwd = upwd;
  }


  public String getUadress() {
    return uadress;
  }


  public void setUadress(String uadress) {
    this.uadress = uadress;
  }


  public String getUtel() {
    return utel;
  }


  public void setUtel(String utel) {
    this.utel = utel;
  }


  public LocalDateTime getUtime() {
    return utime;
  }


  public void setUtime(LocalDateTime utime) {
    this.utime = utime;
  }


  @Override
  public String toString() {
    return "User [uID=" + uID + ", uname=" + uname + ", usex=" + usex + ", upwd=" + upwd + ", uadress=" + uadress
        + ", utel=" + utel + ", utime=" + utime + "]";
  }


}

这一步没什么难度，直接把每一个属性都设置一下，然后设置为私有，注意属性的数据类型，这个很重要，方便后期管理类对其进行操作。

二、属性管理类

这个是整个demo比较难得地方，我的想法是建立Admin属性管理类，Order属性管理类，Dishes属性类，User属性管理类，再在Admin属性管理类里把Order属性管理类，Dishes属性类，User属性管理类先new出来，然后，每个属性管理类实现各自的方法，只需要在Admin属性管理类中调用各个属性管理类的方法，就可以实现通过Admin类管理其他类的数据，但是，每个类需要建一个Map集合，存储各自的元素，此处应该注意每个属性管理类Map的键方便后期对Map进行操作，然后建立菜单类，规定User和Admin能调用的方法。

话不多说，直接上代码，一下代码是通过Admin管理类延伸的，所以先看Admin管理类。

1. Admin管理类

package com.softeem.lesson23.test2;


import java.time.LocalDate;
import java.time.LocalDateTime;
//import java.util.ArrayList;
import java.util.Collections;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.Scanner;
//import java.util.Set;


public class AdminSys implements DAO<Admin> {
  static Map<String, Admin> map = new HashMap<>();
//  static Set<String> keys = map.keySet();
  UserSys u = new UserSys();
  OrderSys o = new OrderSys();
  DishesSys d = new DishesSys();
  Scanner sc = new Scanner(System.in);


  /**
   * 添加菜品
   */
  public void addDishes() {
    System.out.println("请输入您要添加的菜品:(按照:菜品ID/菜品名/菜品类型/单价/月销量/总数量)");
    String str = sc.next();
    String[] info = str.split("/");
    //
    if (info.length < 6) {
      System.out.println("天啦撸，输入失败啦，请重新输入！");
      addDishes();
    } else {
      LocalDate dtime = LocalDate.now();
      Dishes t = new Dishes(info[0], info[1], info[2], dtime, Double.parseDouble(info[3]),
          Integer.parseInt(info[4]), Integer.parseInt(info[5]));
      d.insert(t);
      System.out.println("小主,恭喜你！添加成功了");
    }
  }


  /**
   * 查看所有菜品信息(包含分页功能)
   */
  public void showAllDishes(int pageSize) {
    List<Dishes> list = d.findAll();
    int start = 0;
    //先写一个死循环，进入else后break掉
    while (true) {
      if (list.size() > (pageSize + start)) {
        System.out.println(list.subList(start, pageSize + start));


      } else {
        System.out.println(list.subList(start, list.size()));
        break;
      }
      start = start + pageSize;
    }
  }


  /**
   * 查看指定类别的菜品信息
   * 
   */
  public void selecBytypeOfAdmin() {
    System.out.println("请输入您要查询菜品的类别：");
    String typename = sc.next();
    d.selectBytype(typename);
  }


  /**
   * 根据菜品id修改菜品价格
   */
  public void selectByDishesID() {
    System.out.println("请输入您要查询的菜品id：");
    String id = sc.next();
    Dishes dish = d.findById(id);
    if (dish == null) {
      System.out.println("没有当前id的菜品呢");
    } else {
      System.out.println("当前菜品为：" + dish);
      System.out.println("请输入新的菜品单价：");
      double newprice = sc.nextDouble();
      Dishes t = new Dishes(dish.getdID(), dish.getDname(), dish.getDtype(), dish.getDtime(), newprice,
          dish.getDsales(), dish.getDstocks());
      d.insert(t);
      System.out.println("修改成功" + d.findById(t.getdID()));
    }
  }


  /**
   * 删除指定id的菜品
   * 
   * @param args
   */
  public void deleteDishes() {
    System.out.println("请输入您要删除的菜品id");
    String id = sc.next();
    d.delete(id);
    System.out.println("删除成功！！");
  }


  /**
   * 添加客户
   */
  public void addUser() {
    System.out.println("请输入您要添加的用户:按照(id/姓名/性别/密码/送餐地址/手机号)");
    String str = sc.next();
    String[] info = str.split("/");
    if (info.length < 6) {
      System.out.println("您输入的信息有误，请重新输入....");
      addUser();
    } else {
      LocalDateTime utime = LocalDateTime.now();
      u.insert(new User(info[0], info[1], info[2], info[3], info[4], info[5], utime));
      System.out.println("添加成功");
    }
  }


  /**
   * 查看客户列表
   */
  public void findUser() {
    List<User> userlist = u.findAll();
    for (User user : userlist) {
      System.out.println(user);
    }
  }


  /**
   * 根据id查找指定用户
   */
  public User findUserByid(String id) {
    return u.findById(id);
  }


  /**
   * 删除指定id的客户
   */
  public void deleteUserByAdmin() {
    System.out.println("请输入您要删除的id：");
    String id = sc.next();
    u.delete(id);
  }


  /**
   * 订单列表显示
   */
  public void showAllOrder() {
    List<Order> allOrder = o.findAll();
    for (Order order : allOrder) {
      System.out.println(order);
    }
  }


  /**
   * 根据订单id修改订单状态
   */
  public void changeOrderValue() {
    System.out.println("请输入您要修改状态的订单id");
    String id = sc.next();
    Order order = o.findById(id);
    if (order == null) {
      System.out.println("没有当前id的订单，请检查输入");
    } else {
      System.out.println("已找到当前id订单" + order);
      System.out.println("请输入您要修改的状态：0:未支付 1：已支付 2：配送中 3：已完成");
      int value = sc.nextInt();
      Order t = new Order(order.getOrderID(), order.getUtime(), order.getDishes(), order.getOrdernum(),
          order.getuID(), order.getOrderprice(), value);
      o.insert(t);
      System.out.println("修改成功了！！！");
    }


  }
  /**
   * 显示所有菜品(按菜品销量从高到低排序输出)
   */
  public void showAllDishesByUser() {
    List<Dishes> list = d.findAll();
    Collections.sort(list, (p1, p2) -> p1.getDsales() - p2.getDsales());
    System.out.println(list);
  }


  /**
   * 点餐（输入菜品id和购买数量）
   */
  public void shopDishes(User user) {
    showAllDishesByUser();
    System.out.println("请输入您要购买的id和数量：按照(id/数量)");
    String str = sc.next();
    String[] info = str.split("/");
    // 判断输入是否符合要求，不符合则要求重新输入
    if (info.length < 2) {
      System.out.println("输入有误，请重新输入：");
      shopDishes(user);
    } else {
      LocalDateTime l = LocalDateTime.now();
      // String orderID, LocalDateTime utime, Dishes dishes, int ordernum, String uID,
      // Double orderprice,int orderValue
      Order t = new Order(info[0], l, d.findById(info[0]), Integer.parseInt(info[1]), user.getuID(),
          o.findById(info[0]).getOrderprice(), o.findById(info[0]).getOrderValue());
      o.insert(t);
      System.out.println("订单已生成！！！" + o.findById(info[0]));
    }
  }


  /**
   * 根据菜品类别显示所有菜品
   */
  public void ShowOfTypeByUser() {
    System.out.println("请输入您要查找的类别：");
    String str = sc.next();
    System.out.println(d.findByType(str));


  }


  /**
   * 查看所有订单(当前登录用户的)
   */
  public void showAllOrderByUser(User user) {
    List<Order> list = o.findByuId(user.getuID());
    for (Order order : list) {
      System.out.println(order);
    }
  }


  /**
   * 修改密码（当前登录用户的）
   */
  public void changePwdByUser(User user) {
    u.changepwd(user.getuID());
    System.out.println("修改成功！！");
  }


  /**
   * 个人信息显示
   */
  public void showByUser(User user) {
    User findById = u.findById(user.getuID());
    System.out.println(findById);
  }
   //待补充功能，删除管理员
  @Override
  public void delete(String id) {


  }
  //待补充功能，添加管理员
  @Override
  public void insert(Admin t) {
    // TODO Auto-generated method stub


  }
  //待补充功能，通过id即账号查找管理员
  @Override
  public Admin findById(String id) {


    return map.get(id);
  }
  //待补充功能，显示所有管理员
  @Override
  public List<Admin> findAll() {
    // TODO Auto-generated method stub