提供了编程的基础技术教程

zl程序教程

您现在的位置是：首页 >  Java

当前栏目

JavaSE综合练习之大数据手机商城

JavaSE 数据 手机
2023-04-18 13:14:19 时间

文章目录

前言

大家好,我是ChinaManor,直译过来就是中国码农的意思,我希望自己能成为国家复兴道路的铺路人,大数据领域的耕耘者,平凡但不甘于平庸的人。

下面是本码农在学习Java基础做的练习题,发出来希望给各位萌新学java有所帮助

需要用到的Jar包 链接：https://pan.baidu.com/s/1Y4CT_ePPKc2lDdh_ylMCew 提取码：didj

手机商城

​ 题干：

​ 根据指定要求，完成手机商城以下功能：

​ 登录、商品列表查询、商品详情、展示购物车商品、访问足迹、添加到购物车、立即购买

一、 登录

​ 题干：

​ 完成【登录】功能：

​ 用户输入用户名和密码完成登录功能

​ 注：用户名和密码在初始化数据中（init方法）已给出

​ 要求：

a. 商品列表查询、商品详情、展示购物车商品、访问足迹、添加到购物车

​ 注：用户只有在登录状态下，才可以访问 付款功能 ！！！

二、 商品列表查询

​ 题干：

​ 完成【商品列表查询】功能：

​ 要求：

三、 商品详情

​ 题干：

​ 完成【商品详情】功能：

​ 要求：

四、 添加到购物车

​ 题干：

​ 完成【添加到购物车】功能：

​ 要求：

五、 立即购买

​ 题干：

​ 完成【立即购买】功能：

​ 要求：

a. 若orders.txt文件不存在，创建该文件

b. 若存储多个购买记录，换行存储（一行一条购买记录）

六、 展示购物车商品

​ 题干：

​ 完成【展示购物车商品】功能：

​ 要求：

七、 访问足迹

​ 题干：

​ 完成【访问足迹】功能：

​ 要求：

参考代码：

Shop.java

package 每日作业17;

import org.apache.commons.io.FileUtils;

import java.io.File;
import java.util.ArrayList;
import java.util.List;
import java.util.Scanner;

/**
 * Created by dingw on 2019/11/17.
 */
public class Shop {
    //品牌集合
    static List<Brand> brandList = new ArrayList<>();
    //用户
    static ArrayList<User> users = new ArrayList<>();
    //购物车
    static ArrayList<Item> carts = new ArrayList<>();
    //访问足迹
    static List<Goods> goodsList = new ArrayList<>();
    //判断登录的标识
    static boolean flag = false;
    //登录人
    static String loginname = "";

    public static void main(String[] args) throws Exception {
        init();
        System.out.println("=====================================大数据手机商城欢迎您========================================");
        one:
        while (true) {
            System.out.println("==========================================================================================");
            System.out.println("【1】 登录");
            System.out.println("【2】 商品列表查询");
            System.out.println("【3】 商品详情");
            System.out.println("【4】 展示购物车商品");
            System.out.println("【5】 访问足迹");
            System.out.println("【6】 退出");
            System.out.print("请选择[1-6]:");
            System.out.println("请输入你的操作");
            Scanner sc = new Scanner(System.in);
            String x = sc.nextLine();
            switch (x) {
                case "1":
                    login();
                    break;
                case "2":
                    findAll();
                    break;
                case "3":
                    findProductById();
                    two:
                    while (true) {
                        System.out.println("***************************************************************************");
                        System.out.println("【1】 添加到购物车");
                        System.out.println("【2】 立即购买");
                        System.out.println("【3】 退出");
                        System.out.print("请选择[1-3]:");
                        System.out.println("请输入你的操作");
                        Scanner sc1 = new Scanner(System.in);
                        String xs = sc1.nextLine();
                        switch (xs) {
                            case "1":
                                addCart();
                                break;
                            case "2":
                                pay();
                                break;
                            default:
                                break two;
                        }
                    }
                    break;
                case "4":
                    showCart();
                    break;
                case "5":
                    historyVisit();
                    break;
                default:
                    break one;
            }

        }

    }

    /**
     * 展示购物车
     */
    public static void showCart() {
        System.out.println("===================================购物车商品如下============================================");
        if (carts.size() == 0) {
            System.out.println("购物车中暂时还没有商品哟，请前往商品首页购物！！！");
        } else {
            System.out.println("货物编号		 货物名称（商品名+颜色）			价格					颜色		购买数量");
            for (Item item : carts) {
                System.out.println(item.getId() + "				" + item.getName() + "				" + item.getPrice() + "				" + item.getColor() + "		" + item.getNum());

            }
        }

    }

    /**
     * 结账
     */
    private static void pay() throws Exception {
        if (flag) {
            System.out.println("请输入货物编号：");
            Scanner sc = new Scanner(System.in);
            String num = sc.nextLine();
            System.out.println("请输入购买数量：");
            String kc = sc.nextLine();
            boolean ss = false;
            for (Brand brand : brandList) {
                for (Goods goods : brand.getGoodsList()) {
                    for (Item item : goods.getItemList()) {
                        if (item.getId().equals(num)) {
                            if (item.getNum() < Integer.parseInt(kc)) {
                                flag = true;
                            } else {
                                System.out.println("货物编号		 货物名称（商品名+颜色）			价格					颜色		购买数量");
                                System.out.println(item.getId() + "				" + item.getName() + "				" + item.getPrice() + "				" + item.getColor() + "		" + kc);
                                System.out.println("=======================================================================");
                                double total = (Math.round(item.getPrice() * 100 * Integer.parseInt(kc))) / 100.0;
                                System.out.println("总计付款：" + total);
                                item.setNum(item.getNum() - Integer.parseInt(kc));
                                FileUtils.write(new File("orders.txt"), loginname + ":" + item.getName() + "," + kc + "," + total + "
", true);
                                return;
                            }
                        }

                    }

                }

            }
            System.out.println("货物编号不存在，请重新输入！！！");
            if (ss) {
                System.out.println("库存不足，请重新购买！");
            }


        } else {
            System.out.println("您还没有登录，请登录.....");
            login();
        }
    }

    /**
     * 添加到购物车
     */
    private static void addCart() {
        System.out.println("请输入货物编号：");
        Scanner sc = new Scanner(System.in);
        String num = sc.nextLine();
        System.out.println("请输入商品数量：");
        String kc = sc.nextLine();
        for (Brand brand : brandList) {
            for (Goods goods : brand.getGoodsList()) {
                for (Item item : goods.getItemList()) {
                    if(carts.contains(item)){
                        for (Item cart : carts) {
                            if (cart.getName().equals(item.getName())&&(cart.getNum()+Integer.parseInt(kc))<=item.getNum()){
                                cart.setNum(cart.getNum()+Integer.parseInt(kc));
                                System.out.println("添加到购物车成功！");
                                return;
                            }

                        }
                    }
                    if (item.getId().equals(num) && Integer.parseInt(kc) <= item.getNum()) {
                        carts.add(new Item(item.getId(), item.getName(), item.getColor(), item.getPrice(), Integer.parseInt(kc)));
                        System.out.println("添加到购物车成功！");
                        return;
                    }

                }

            }

        }
        System.out.println("添加失败");

    }

    /**
     * 访问足迹
     */
    private static void historyVisit() {
        if (goodsList.size() == 0) {
            System.out.println("您还没有访问任何商品哟！");
        } else {
            System.out.println("商品编号		 商品名称				商品介绍");
            for (Goods goods : goodsList) {
                System.out.printf(goods.getGid() + "			  " + goods.getGname() + "			" + goods.getDesc());
                System.out.println();

            }
        }

    }

    /**
     * 商品详情
     */
    private static void findProductById() {
        findAll();
        System.out.println("============================================商品详情========================================");
        System.out.println("请输入您要查询的商品编号：");
        Scanner sc = new Scanner(System.in);
        int num = sc.nextInt();
        System.out.println("货物编号		 货物名称（商品名+颜色）			价格					颜色		库存数");
        for (Brand brand : brandList) {
            for (Goods goods : brand.getGoodsList()) {
                if (goods.getGid() == num) {
                    if (!goodsList.contains(goods)){
                        goodsList.add(goods);
                    }

                    for (Item item : goods.getItemList()) {
                        System.out.println(item.getId() + "				" + item.getName() + "				" + item.getPrice() + "				" + item.getColor() + "		" + item.getNum());

                    }
                }
            }

        }

    }


    /**
     * 查询所有：商品列表查询
     */
    public static void findAll() {
        System.out.println("=========================================商品列表查询======================================");
        System.out.println("商品编号		 商品名称				商品介绍");
        for (Brand brand : brandList) {
            for (Goods goods : brand.getGoodsList()) {
                System.out.printf(goods.getGid() + "			  " + goods.getGname() + "			" + goods.getDesc());
                System.out.println();
            }

        }

    }

    /**
     * 登录
     */
    public static void login() {
        System.out.println("=====================================欢迎使用登录功能=======================================");
        Scanner sc = new Scanner(System.in);
        System.out.println("请输入用户名：");
        String username = sc.nextLine();
        System.out.println("请输入密码: ");
        String password = sc.nextLine();
        for (User user : users) {
            if (user.getUsername().equals(username) && user.getPassword().equals(password)) {
                System.out.println("亲爱的" + username + "，您已登录成功，请开心购物！！！");
                flag = true;
                loginname = username;
                return;
            }

        }
        System.out.println("登录失败，请重新登录！！！");

    }

    /**
     * 初始化数据
     */
    public static void init() {

        users.add(new User(1, "tom", "123"));
        users.add(new User(2, "jack", "456"));

        //货物集合
        List<Item> hwitemList = new ArrayList<>();
        List<Item> hwproitemList = new ArrayList<>();
        List<Item> mzitemList = new ArrayList<>();
        List<Item> mzPitemList = new ArrayList<>();
        List<Item> xmitemList = new ArrayList<>();
        hwitemList.add(new Item("1_1", "华为P20极光色", "极光色", 3788, 10));
        hwitemList.add(new Item("1_2", "华为P20宝石蓝", "宝石蓝", 3788, 10));
        hwproitemList.add(new Item("2_1", "华为P20 Pro极光色", "极光色", 4988, 10));
        hwproitemList.add(new Item("2_2", "华为P20 Pro宝石蓝", "宝石蓝", 4988, 10));
        mzitemList.add(new Item("3_1", "魅族16 th远山白", "远山白", 2698, 10));
        mzPitemList.add(new Item("4_1", "魅族16 th plus远山白", "远山白", 3198, 1));
        xmitemList.add(new Item("5_1", "小米8黑色", "黑色", 2699, 0));

        //商品集合
        List<Goods> hwgoodsList = new ArrayList<>();
        List<Goods> mzgoodsList = new ArrayList<>();
        List<Goods> xmgoodsList = new ArrayList<>();

        hwgoodsList.add(new Goods(1, "华为P20", "华为P20,你值得拥有", hwitemList));
        hwgoodsList.add(new Goods(2, "华为P20 Pro", "华为P20 Pro,你值得拥有", hwproitemList));
        mzgoodsList.add(new Goods(3, "魅族16 th", "高通骁龙845，屏下指纹，AI双摄光学防抖", mzitemList));
        mzgoodsList.add(new Goods(4, "魅族16 th plus", "高通骁龙845，屏下指纹，AI双摄光学防抖", mzPitemList));
        xmgoodsList.add(new Goods(5, "小米8", "骁龙845处理器 / 红外人脸解锁 /AI变焦双摄", xmitemList));


        brandList.add(new Brand(1, "华为", hwgoodsList));
        brandList.add(new Brand(2, "魅族", mzgoodsList));
        brandList.add(new Brand(3, "小米", xmgoodsList));
    }


}

Item.java

package 每日作业17;

/**
 * Created by dingw on 2019/11/17.
 */

/**
 * 货物类：表示具体的手机
 */
public class Item {
    //货物id
    private String id;
    //货物名称（商品名+手机颜色）
    private String name;
    //手机颜色
    private String color;
    //售价
    private double price;
    //库存数
    private int num;

    public Item() {
    }

    public Item(String id, String name, String color, double price, int num) {
        this.id = id;
        this.name = name;
        this.color = color;
        this.price = price;
        this.num = num;
    }

    public String getId() {
        return id;
    }

    public void setId(String id) {
        this.id = id;
    }

    public String getName() {
        return name;
    }

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

    public String getColor() {
        return color;
    }

    public void setColor(String color) {
        this.color = color;
    }

    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;
    }

    @Override
    public boolean equals(Object o) {
        if (this == o) return true;
        if (o == null || getClass() != o.getClass()) return false;

        Item item = (Item) o;

        if (Double.compare(item.price, price) != 0) return false;
        if (num != item.num) return false;
        if (id != null ? !id.equals(item.id) : item.id != null) return false;
        if (name != null ? !name.equals(item.name) : item.name != null) return false;
        return color != null ? color.equals(item.color) : item.color == null;
    }

    @Override
    public int hashCode() {
        int result;
        long temp;
        result = id != null ? id.hashCode() : 0;
        result = 31 * result + (name != null ? name.hashCode() : 0);
        result = 31 * result + (color != null ? color.hashCode() : 0);
        temp = Double.doubleToLongBits(price);
        result = 31 * result + (int) (temp ^ (temp >>> 32));
        result = 31 * result + num;
        return result;
    }
}

Goods.java

package 每日作业17;

import java.util.ArrayList;
import java.util.List;

/**
 * Created by dingw on 2019/11/17.
 */
public class Goods {
    private int gid;
    private String gname;
    private String desc;
    private List<Item> itemList = new ArrayList<>();

    public Goods() {

    }

    public Goods(int gid, String gname, String desc, List<Item> itemList) {
        this.gid = gid;
        this.gname = gname;
        this.desc = desc;
        this.itemList = itemList;
    }

    public int getGid() {
        return gid;
    }

    public void setGid(int gid) {
        this.gid = gid;
    }

    public String getGname() {
        return gname;
    }

    public void setGname(String gname) {
        this.gname = gname;
    }

    public String getDesc() {
        return desc;
    }

    public void setDesc(String desc) {
        this.desc = desc;
    }

    public List<Item> getItemList() {
        return itemList;
    }

    public void setItemList(List<Item> itemList) {
        this.itemList = itemList;
    }

    @Override
    public boolean equals(Object o) {
        if (this == o) return true;
        if (o == null || getClass() != o.getClass()) return false;

        Goods goods = (Goods) o;

        if (gid != goods.gid) return false;
        if (gname != null ? !gname.equals(goods.gname) : goods.gname != null) return false;
        if (desc != null ? !desc.equals(goods.desc) : goods.desc != null) return false;
        return itemList != null ? itemList.equals(goods.itemList) : goods.itemList == null;
    }

    @Override
    public int hashCode() {
        int result = gid;
        result = 31 * result + (gname != null ? gname.hashCode() : 0);
        result = 31 * result + (desc != null ? desc.hashCode() : 0);
        result = 31 * result + (itemList != null ? itemList.hashCode() : 0);
        return result;
    }
}

Brand.java

package 每日作业17;

import java.util.ArrayList;
import java.util.List;

/**
 * Created by dingw on 2019/11/17.
 */
public class Brand {
    private int bid;
    private String bname;
    private List<Goods> goodsList = new ArrayList<>();

    public Brand() {
    }

    public Brand(int bid, String bname, List<Goods> goodsList) {
        this.bid = bid;
        this.bname = bname;
        this.goodsList = goodsList;
    }

    public int getBid() {
        return bid;
    }

    public void setBid(int bid) {
        this.bid = bid;
    }

    public String getBname() {
        return bname;
    }

    public void setBname(String bname) {
        this.bname = bname;
    }

    public List<Goods> getGoodsList() {
        return goodsList;
    }

    public void setGoodsList(List<Goods> goodsList) {
        this.goodsList = goodsList;
    }
}

User.java

package 每日作业17;

/**
 * Created by dingw on 2019/11/17.
 */

/**
 * 用户
 */
public class User {
    //用户id
    private int uid;
    //用户名
    private String username;
    //密码
    private String password;

    public User() {
    }

    public User(int uid, String username, String password) {
        this.uid = uid;
        this.username = username;
        this.password = password;
    }

    public int getUid() {
        return uid;
    }

    public void setUid(int uid) {
        this.uid = uid;
    }

    public String getUsername() {
        return username;
    }

    public void setUsername(String username) {
        this.username = username;
    }

    public String getPassword() {
        return password;
    }

    public void setPassword(String password) {
        this.password = password;
    }
}

总结

以上便是JavaSE综合练习之大数据手机商城 ,喜欢的小伙伴欢迎一键三连!!! 我是manor，一枚相信技术改变世界的码农，我们下期再见

相关文章