登录购物管理系统

package shopping;

import java.util.Date;

public class Customer {

    private int id;
    private String birthday;
    private int score;
    public Customer() {
        super();
        // TODO Auto-generated constructor stub
    }
    public Customer(int id, String birthday, int score) {
        super();
        this.id = id;
        this.birthday = birthday;
        this.score = score;
    }
    @Override
    public String toString() {
        return "Customer [id=" + id + ", birthday=" + birthday + ", score=" + score + "]";
    }
    @Override
    public int hashCode() {
        final int prime = 31;
        int result = 1;
        result = prime * result + id;
        return result;
    }
    @Override
    public boolean equals(Object obj) {
        if (this == obj)
            return true;
        if (obj == null)
            return false;
        if (getClass() != obj.getClass())
            return false;
        Customer other = (Customer) obj;
        if (id != other.id)
            return false;
        return true;
    }
    public int getId() {
        return id;
    }
    public void setId(int id) {
        this.id = id;
    }
    public String getBirthday() {
        return birthday;
    }
    public void setBirthday(String birthday) {
        this.birthday = birthday;
    }
    public int getScore() {
        return score;
    }
    public void setScore(int score) {
        this.score = score;
    }
}

package shopping;

public class Goods {

    private int id;
    private String name;
    private double price;
    private int num;
    public Goods() {
        super();
        // TODO Auto-generated constructor stub
    }
    public Goods(int id, String name, double price, int num) {
        super();
        this.id = id;
        this.name = name;
        this.price = price;
        this.num = num;
    }
    @Override
    public String toString() {
        return "Goods [id=" + id + ", name=" + name + ", price=" + price + ", num=" + num + "]";
    }
    @Override
    public int hashCode() {
        final int prime = 31;
        int result = 1;
        result = prime * result + id;
        return result;
    }
    @Override
    public boolean equals(Object obj) {
        if (this == obj)
            return true;
        if (obj == null)
            return false;
        if (getClass() != obj.getClass())
            return false;
        Goods other = (Goods) obj;
        if (id != other.id)
            return false;
        return true;
    }
    public int getId() {
        return id;
    }
    public void setId(int id) {
        this.id = id;
    }
    public String getName() {
        return name;
    }
    public void setName(String name) {
        this.name = name;
    }
    public double getPrice() {
        return price;
    }
    public void setPrice(double price) {
        this.price = price;
    }
    public int getNum() {
        return num;
    }
    public void setNum(int num) {
        this.num = num;
    }
}

package shopping;

import java.util.Collection;
import java.util.HashMap;
import java.util.Map;

public class GoodsManager {

    private Map<Integer, Goods> map = new HashMap<Integer, Goods>();
    private Map<Integer, Goods> map0 = new HashMap<Integer, Goods>();
    
    public void init() {
        map.put(1, new Goods(1,"addidas运动鞋",880,0));
        map.put(2, new Goods(2,"Kappa网球裙",100,0));
        map.put(3, new Goods(3,"网球拍",990,0));
        map.put(4, new Goods(4,"addidasT恤",400,0));
        map.put(5, new Goods(5,"Nike运动鞋",900,0));
        map.put(6, new Goods(6,"Kappa网球",200,0));
        map.put(7, new Goods(7,"KappaT恤",300,0));
    }
    
    public Collection<Goods> showall() {
        return map.values();
    }
    
    public void add(int id,int num) {
        map0.put(id, new Goods(id,map.get(id).getName(),map.get(id).getPrice(),num));
    }
    
    public Collection<Goods> showbuy() {
        return map0.values();
    }
}

package shopping;

import java.util.Collection;
import java.util.Collections;
import java.util.Scanner;

public class RunProgram {

    private static Scanner input = new Scanner(System.in);
    private static ShoppingManager sm = new ShoppingManager();
    private static GoodsManager gm = new GoodsManager();
    
    public static void main(String[] args) {
        
        sm.init();
        gm.init();
        
        String user;
        String password;
        String user0 = "manager";
        String password0 = "0000";
        
        int n;
        
        while(true) {
            System.out.println("\n\t欢迎使用我行我素购物管理系统1.0版\n");
            System.out.println("* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *\n");
            System.out.println("\t1. 登 录 系 统\n");
            System.out.println("\t2. 更 改 管 理 员 密 码\n");
            System.out.println("\t3. 退 出\n");
            System.out.println("* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *\n");
            System.out.print("请选择,输入数字:");
            n= input.nextInt();
            switch(n) {
            case 1:
                int x=3;
                do {
                    System.out.print("请输入用户名：");
                    user = input.next();
                    System.out.print("请输入密码：");
                    password = input.next();
                    if(user.equals(user0) && password.equals(password0)) {
                        while(true) {
                            System.out.println("\t欢迎使用我行我素购物管理系统\n");
                            System.out.println("* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *\n");
                            System.out.println("\t1. 客 户 信 息 管 理\n");
                            System.out.println("\t2. 购 物 结 算\n");
                            System.out.println("\t3. 真 情 回 馈\n");
                            System.out.println("\t4. 注 销\n");
                            System.out.println("* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *\n");
                            System.out.print("请选择,输入数字:");
                            n= input.nextInt();
                            switch(n) {
                            case 1:
                                while(true) {
                                    System.out.println("我行我素购物管理系统 > 客户信息管理\n");
                                    System.out.println("* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *\n");
                                    System.out.println("\t1. 显 示 所 有 客 户 信 息\n");
                                    System.out.println("\t2. 添 加 客 户 信 息\n");
                                    System.out.println("\t3. 修 改 客 户 信 息\n");
                                    System.out.println("\t4. 查 询 客 户 信 息\n");
                                    System.out.println("* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *\n");
                                    System.out.print("请选择,输入数字或按'n'返回上一级菜单:");
                                    String s = input.next();
                                    switch(s) {
                                    case "n":
                                        break;
                                
                                    case "1":
                                        show();
                                        if(input.next().equals("n")) {
                                            continue;
                                        }else {
                                            break;
                                        }
                                
                                    case "2":
                                        add();
    
                                        if(input.next().equals("n")) {
                                            continue;
                                        }else {
                                            break;
                                        }
                                
                                    case "3":
                                        update();
                                    
                                        if(input.next().equals("n")) {
                                            continue;
                                        }else {
                                            break;
                                        }
                                    
                                    case "4":
                                        find();
                                        if(input.next().equals("n")) {
                                            continue;
                                        }else {
                                            break;
                                        }
                                    }
                                    break;
                                }
                                continue;
                            
                            case 2:
                                accounts();
                            
                                if(input.next().equals("n")) {
                                    continue;
                                }else {
                                    break;
                                }
                            
                            case 3:
                                System.out.println("我行我素购物管理系统 > 真情回馈\n");
                                while(true) {
                                    System.out.println("* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *\n");
                                    System.out.println("\t1. 幸 运 大 放 送\n");
                                    System.out.println("\t2. 幸 运 抽 奖\n");
                                    System.out.println("\t3. 生 日 问 候\n");
                                    System.out.println("* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *\n");
                                    System.out.print("请选择,输入数字或按'n'返回上一级菜单:");
                                    String s = input.next();
                                    switch(s) {
                                    case "n":
                                        break;
                                    
                                    case "1":
                                        max();
                                        if(input.next().equals("n")) {
                                            continue;
                                        }else {
                                            break;
                                        }
                                        
                                    case "2":
                                        System.out.println("我行我素购物管理系统 > 幸运抽奖\n");
                                        System.out.println("是否开始（y/n）：");
                                        if(input.next().equals("y")) {
                                            System.out.println("幸运客户获赠MP3：1711");
                                            System.out.println("请按'n'返回上一级菜单:");
                                            if(input.next().equals("n")) {
                                                continue;
                                            }else {
                                                break;
                                            }
                                        }else {
                                            System.out.println("请按'n'返回上一级菜单:");
                                            if(input.next().equals("n")) {
                                                continue;
                                            }else {
                                                break;
                                            }
                                        }
                                        
                                    case "3":
                                        birthday();
                                        if(input.next().equals("n")) {
                                            continue;
                                        }else {
                                            break;
                                        }
                                        
                                    }
                                    
                                    break;
                                }
                            continue;
                            
                            case 4:
                                break;
                            }
                        
                            break;
                                }
        
                            break;
                        }else {
                            System.out.println("输入错误！您还有"+(--x)+"次机会！\n");
                        }
                    }while(x>0);
                    if(x==0) {
                        System.out.println("对不起！您3次均输入错误！");
                        break;
                    }
                    continue;
            
                case 2:
                    System.out.print("请输入用户名：");
                    user = input.next();
                    System.out.print("请输入密码：");
                    password = input.next();
                
                    if(user.equals("manager") && password.equals("0000")) {
                        System.out.print("请输入新的用户名：");
                        user = input.next();
                        user0 = user;
                        System.out.print("请输入新的密码：");
                        password = input.next();
                        password0 = password;
                        System.out.print("用户名和密码已更改！");
                    }else {
                        System.out.print("抱歉，你没有权限修改！");
                    }
                    continue;
            
                case 3:
                    System.out.println("\n谢谢您的使用！");
                    break;
            
                default:
                    break;
                    }
            
                break;
            }

    }


    private static void birthday() {
        System.out.println("我行我素购物管理系统 > 生日问候\n");
        System.out.print("请输入今天的日期(月/日<用两位表示>)：");
        String date = input.next();
        
        Collection<Customer> s = sm.show();
        boolean b = true;
        for(Customer c : s) {
            if(c.getBirthday().equals(date)) {
                System.out.println("今天是"+c.getId()+"会员的生日，生日快乐！");
                b = false;
            }
        }
        if(b) {
            System.out.println("今天没有过生日的会员！");
        }
        
        System.out.println("\n请按'n'返回上一级菜单:");
    }


    private static void max() {
        System.out.println("我行我素购物管理系统 > 幸运大放送\n");
        Collection<Customer> c = sm.show();
        Customer cus = Collections.max(c,new ScoreComparator());
        System.out.println("具有最高积分的会员是："+cus.getId()+"\t"+cus.getBirthday()+"\t"+cus.getScore());
        System.out.println("恭喜！获赠礼品： 一个价值￥12000.0的苹果笔记本电脑\n");
        System.out.print("请按'n'返回上一级菜单:");
    }

    private static void accounts() {
        System.out.println("我行我素购物管理系统 > 购物结算\n");
        System.out.println("*************************************");
        System.out.println("请选择购买的商品编号：");
        
        Collection<Goods> c = gm.showall();
        
        for(Goods g : c) {
            System.out.println(g.getId()+":"+g.getName());
        }
        
        System.out.println("*************************************\n");
        System.out.print("请输入会员号：");
        int id = input.nextInt();
        
        Customer customer = sm.find(id);
        
        if(c==null) {
            System.out.println("此会员号不存在");
        }else {
        while(true) {
            System.out.print("请输入商品编号：");
            int gid = input.nextInt();
            System.out.print("请输入数目：");
            int number = input.nextInt();
            gm.add(gid, number);
            System.out.print("是否继续（y/n）");
        
            if(input.next().equals("y")) {
                continue;
            }else {
                break;
            }
        }
        
        System.out.println("\n＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊消费清单＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊");
        System.out.println("物品\t单价\t个数\t金额\n");
        
        Collection<Goods> c0 = gm.showbuy();
        
        double sum = 0;
        for(Goods g : c0) {
            System.out.println(g.getName()+"\t￥"+g.getPrice()+"\t"+g.getNum()+"\t￥"+g.getNum()*g.getPrice());
            sum += g.getNum()*g.getPrice();
        }
        
        double discount = 0.85;
        System.out.println("折扣："+discount);
        System.out.println("金额总计:￥"+sum*discount);
        System.out.print("请输入实际交费金额：");
        double actual = input.nextDouble();
        System.out.println("实际交费:￥"+actual);
        System.out.println("找钱：￥"+(actual-sum*discount));
        int score = 66;
        System.out.println("本次购物所获的积分是："+score+"\n");
        sm.update2(id, score);
        }
        
        System.out.println("请按'n'返回上一级菜单:");
    }

    private static void find() {
        System.out.println("我行我素购物管理系统 > 客户信息管理 > 查询客户信息\n");
        System.out.print("请输入会员号：");
        int id = input.nextInt();
        
        Customer c = sm.find(id);
        
        if(c==null) {
            System.out.println("此会员号不存在");
        }else {
            System.out.println("会员号\t生日\t积分");
            System.out.println("------------|------------|---------------");
            System.out.println(c.getId()+"\t"+c.getBirthday()+"\t"+c.getScore());
        }
        System.out.println("\n要继续查询吗（y/n）:");
        if(input.next().equals("y")) {
            find();
        }else {
            System.out.print("请按'n'返回上一级菜单:");
        }
    }

    private static void update() {
        System.out.println("我行我素购物管理系统 > 客户信息管理 > 修改客户信息\n");
        System.out.print("请输入会员号：");
        int id = input.nextInt();
        
        Customer c = sm.find(id);
        
        if(c==null) {
            System.out.println("此会员号不存在");
        }else {
            System.out.println("会员号\t生日\t积分");
            System.out.println("------------|------------|---------------");
            System.out.println(c.getId()+"\t"+c.getBirthday()+"\t"+c.getScore());
        }
        while(true) {
            System.out.println("* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *\n");
            System.out.println("\t1.修 改 会 员 生 日.\n");
            System.out.println("\t2.修 改 会 员 积 分.\n");
            System.out.println("* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *\n");
            System.out.print("请选择，输入数字：");
            int i = input.nextInt();
            switch(i) {
            case 1:
                System.out.print("请输入修改后的生日：");
                String birthday = input.next();
                sm.update1(id, birthday);
                System.out.println("生日信息已更改！");
                System.out.println("是否修改其他属性(y/n):");
                
                if(input.next().equals("y")) {
                    continue;
                }else {
                    System.out.print("\n请按'n'返回上一级菜单:");
                    break;
                }
            
            case 2:
                System.out.print("请输入修改后的会员积分：");
                int score = input.nextInt();
                sm.update2(id, score);
                System.out.println("会员积分已更改！");
                System.out.println("是否修改其他属性(y/n):");
                
                if(input.next().equals("y")) {
                    continue;
                }else {
                    System.out.print("\n请按'n'返回上一级菜单:");
                    break;
                }
        
            default:
                System.out.println("输入错误");
                break;
            }
            break;
        }
    }

    private static void add() {
        System.out.println("我行我素购物管理系统 > 客户信息管理 > 添加客户信息\n");
        System.out.print("请输入会员号(<4位整数>)：");
        int id = input.nextInt();
        System.out.print("请输入会员生日（月/日<用两位数表示>）：");
        String birthday = input.next();
        System.out.print("请输入积分：");
        int score = input.nextInt();
        
        sm.add(id, birthday, score);
        System.out.println("新会员添加成功！");
        System.out.println("继续添加会员吗？（y/n）");
        if(input.next().equals("y")) {
            add();
        }else {
            System.out.print("请按'n'返回上一级菜单:");
        }
    }

    private static void show() {
        System.out.println("我行我素购物管理系统 > 客户信息管理 > 显示客户信息\n");
        System.out.println("会员号\t生日\t积分");
        System.out.println("------------|------------|---------------");
        
        Collection<Customer> collection = sm.show();
        for(Customer customer : collection) {
            System.out.println(customer.getId()+"\t"+customer.getBirthday()+"\t"+customer.getScore());
        }
        
        System.out.print("\n请按'n'返回上一级菜单:");
    }
}

package shopping;

import java.util.Comparator;

public class ScoreComparator implements Comparator{

    @Override
    public int compare(Object o1, Object o2) {
        Customer c1 = (Customer)o1;
        Customer c2 = (Customer)o2;
        return c1.getScore()-c2.getScore();
    }
}

package shopping;

import java.util.Collection;
import java.util.HashMap;
import java.util.Map;

public class ShoppingManager {

    private Map<Integer, Customer> map = new HashMap<Integer, Customer>();
    
    public void add(int id,String birthday,int score) {
        Customer customer = new Customer(id,birthday,score);
        map.put(id, customer);
    }
    
    public void init() {
        map.put(1900, new Customer(1900,"08/05",2000));
        map.put(1711, new Customer(1711,"07/13",4000));
        map.put(1623, new Customer(1623,"06/26",5000));
        map.put(1545, new Customer(1545,"04/08",2200));
        map.put(1464, new Customer(1464,"08/16",1000));
        map.put(1372, new Customer(1372,"12/23",3000));
        map.put(1286, new Customer(1286,"12/21",10080));
    }
    
    public Collection<Customer> show() {
        return map.values();
    }
    
    public void update1(int id,String birthday) {
        map.put(id, new Customer(id,birthday,map.get(id).getScore()));
    }
    
    public void update2(int id,int score) {
        map.put(id, new Customer(id,map.get(id).getBirthday(),score));
    }
    
    public Customer find(int id) {
        if(map.containsKey(id)) {
            return map.get(id);
        }else {
            return null;
        }    
    }    
}