16课时作业

Homework.java

package edu.mama.ls16.homework;
import java.io.FileWriter;
import java.io.IOException;
import java.io.OutputStream;
import java.io.Writer;
import java.math.BigDecimal;
import java.time.LocalDate;
import java.time.LocalDateTime;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
public class Homework {
    /**
     * 商城订单数据
     * @return
     */
    public static List<Order> order() {
        /*
        TODO 定义若干个类，描述商城订单信息。创建订单对象，构造集合。
        订单编号、 下单时间、  商品编号、 商品名称、 商品规格、订单备注、实付金额、支付时间、             卖家名称、     买家ID、  买家名称、 收货人姓名、收货人电话、  收货地址（省、市、区、街道小区门牌号）
        D202101   2021-01-02  SKU01     小米手机   8G+128G  蓝色      3999     2021-01-02 12:08:28   小米旗舰店     lilei96  李雷      李有才      13666666666  上海市上海市静安区安心家园2号楼1门501
        D202102   2021-01-02  SKU02     苹果电脑   2021款   银色      13999    2021-01-02 10:12:21   苹果旗舰店     lilei96  李雷      李雷        13888888888  北京市朝阳区望京中国尊86层
        D202103   2021-02-02  SKU02     苹果电脑   2021款   银色      13999    2021-02-02 11:51:37   苹果旗舰店     hmm9822  韩梅梅    韩梅梅      13999999999  浙江省杭州市西湖区湖中心小岛
        D202104   2021-01-08  SKU03     MAC口红    红色              139.9    2021-01-08 09:46:33    李佳奇优选     hmm9822  韩梅梅    韩梅梅      13999999999  浙江省杭州市西湖区湖中心小岛
        D202105   2021-01-31  SKU03     MAC口红    红色              139.9    2021-02-01 01:22:06    李佳奇优选     mdongmei 马冬梅    马冬梅      13777777777  四川省成都市双流机场T2航站楼206-7
         */
        /*
        订单：订单编号、下单时间、  订单备注、实付金额、支付时间、      商品、卖家、买家、收货人
        商品：商品编号、 商品名称、 商品规格、
        卖家：卖家名称
        买家：买家ID、  买家名称
        收货人：收货人姓名、收货人电话、  收货地址（省、市、区、街道小区门牌号）
         */
        Product sku1 = new Product("SKU01", "小米手机", "8G+128G");
        Product sku2 = new Product("SKU02", "苹果电脑", "2021款");
        Product sku3 = new Product("SKU03", "MAC口红", "红色");
        Store store1 = new Store("小米旗舰店");
        Store store2 = new Store("苹果旗舰店");
        Store store3 = new Store("李佳奇优选");
        User ll = new User("lilei96", "李雷");
        User hmm = new User("hmm9822", "韩梅梅");
        User mdm = new User("mdongmei", "马冬梅");
        Address addr1 = new Address("李有才", "13666666666", "上海市上海市静安区安心家园2号楼1门501");
        Address addr2 = new Address("李雷", "13888888888", "北京市朝阳区望京中国尊86层");
        Address addr3 = new Address("韩梅梅", "13999999999", "浙江省杭州市西湖区湖中心小岛");
        Address addr4 = new Address("马冬梅", "13777777777", "四川省成都市双流机场T2航站楼206-7");
        Order order1 = new Order(
                "D202101",
                LocalDate.of(2021,1,2),
                "蓝色",
                new BigDecimal("3999"),
                LocalDateTime.of(2021,1,2,12,8,28),
                sku1,
                store1,
                ll,
                addr1
        );
        Order order2 = new Order(
                "D202102",
                LocalDate.of(2021,1,2),
                "银色",
                new BigDecimal("13999"),
                LocalDateTime.of(2021,1,2,10,12,21),
                sku2,
                store2,
                ll,
                addr2
        );
        Order order3 = new Order(
                "D202103",
                LocalDate.of(2021,2,2),
                "银色",
                new BigDecimal("13999"),
                LocalDateTime.of(2021,2,2,11,51,37),
                sku2,
                store2,
                hmm,
                addr3
        );
        Order order4 = new Order(
                "D202104",
                LocalDate.of(2021,1,8),
                null,
                new BigDecimal("139.9"),
                LocalDateTime.of(2021,1,8,9,46,33),
                sku3,
                store3,
                hmm,
                addr3
        );
        Order order5 = new Order(
                "D202105",
                LocalDate.of(2021,1,31),
                null,
                new BigDecimal("139.9"),
                LocalDateTime.of(2021,2,1,1,22,6),
                sku3,
                store3,
                mdm,
                addr4
        );
        List<Order> orderList = new ArrayList<>();
        orderList.add(order1);
        orderList.add(order2);
        orderList.add(order3);
        orderList.add(order4);
        orderList.add(order5);
//        for (Order order : orderList) {
//            System.out.println(order.getActualAmount());
//        }
        return orderList;
    }
    /**
     * 统计并生成数据文件
     * @param orderList 销售订单
     */
    public static void statistic(List<Order> orderList) {
        /*
        TODO 2021年1月份每个商品的销量和销售额，生成一份数据文件，内容格式如下：
        月份|商品编号|商品名称|销量|销售额
        2021年01月|SKU01|小米手机|1|3999
        2021年01月|SKU02|苹果电脑|2|27998
        2021年01月|SKU03|MAC口红|2|279.8
         */
        Map<String, ProductSales> map = new HashMap<>();
        //统计
        for (Order order : orderList) {
            if (order.getOrderDate().getYear() == 2021 && order.getOrderDate().getMonthValue() == 1) {
                String skuCode = order.getProduct().getCode();
                if (map.containsKey(skuCode)) {
                    map.get(skuCode).addSoldNum(1).addSoldAmount(order.getActualAmount());
                } else {
                    map.put(skuCode, new ProductSales("2021年01月", order.getProduct(), 1, order.getActualAmount()));
                }
            }
        }
        //输出文件
        try(Writer writer = new FileWriter("LS16/res/2021年1月份每个商品的销量和销售额.txt")) {
            writer.write("月份|商品编号|商品名称|销量|销售额\n");
            //输出数据
            for (String key : map.keySet()) {
                String str = String.format(
                        "%s|%s|%s|%d|%s\n",
                        "2021年01月",
                        map.get(key).getSku().getCode(),
                        map.get(key).getSku().getName(),
                        map.get(key).getSoldNum(),
                        map.get(key).getSoldAmount().toString()
                );
                writer.write(str);
            }
        } catch (IOException e) {
            e.printStackTrace();
        }
        /*
        TODO 2021年1月份每个买家的消费总额和购买商品数量，生成一份数据文件，内容格式如下：
        月份|买家ID|买家名称|购买商品数量|消费总额
        2021年01月|lilei96|李雷|2|17998
        2021年01月|hmm9822|韩梅梅|2|14138.9
        2021年01月|mdongmei|马冬梅|1|139.9
         */
        Map<String ,BuyerSales> map1 = new  HashMap<>();
        for (Order order : orderList) {
            if (order.getOrderDate().getYear() == 2021 && order.getOrderDate().getMonthValue() == 1) {
                String userName = order.getBuyer().getName();
                if (map1.containsKey(userName)) {
                    map1.get(userName).addSoldNum(1).addSoldAmount(order.getActualAmount());
                } else {
                    map1.put(userName, new BuyerSales("2021年01月", order.getBuyer(), 1, order.getActualAmount()));
                }
            }
        }
        try(Writer writer = new FileWriter("LS16/res/2021年1月份每个买家的消费总额和购买商品数量.txt")) {
            writer.write("月份|买家ID|买家名称|购买商品数量|消费总额\n");
            //输出数据
            for (String key : map1.keySet()) {
                String str = String.format(
                        "%s|%s|%s|%d|%s\n",
                        "2021年01月",
                        map1.get(key).getUser().getId(),
                        map1.get(key).getUser().getName(),
                        map1.get(key).getSoldNum(),
                        map1.get(key).getSoldAmount().toString()
                );
                writer.write(str);
            }
        } catch (IOException e) {
            e.printStackTrace();
        }
        /*
        TODO 2021年1月份每个卖家的营业额，生成一份数据文件，内容格式如下：
        月份|卖家名称|营业额
        2021年01月|小米旗舰店|3999
        2021年01月|苹果旗舰店|27998
        2021年01月|李佳奇优选|279.8
         */
        Map<String ,StoreSales> map2 = new  HashMap<>();
        for (Order order : orderList) {
            if (order.getOrderDate().getYear() == 2021 && order.getOrderDate().getMonthValue() == 1) {
                String storeName = order.getSeller().getName();
                if (map2.containsKey(storeName)) {
                    map2.get(storeName).addSoldAmount(order.getActualAmount());
                } else {
                    map2.put(storeName, new StoreSales("2021年01月", order.getSeller(), order.getActualAmount()));
                }
            }
        }
        try(Writer writer = new FileWriter("LS16/res/2021年1月份每个卖家的营业额.txt")) {
            writer.write("月份|卖家名称|营业额\n");
            //输出数据
            for (String key : map2.keySet()) {
                String str = String.format(
                        "%s|%s|%s\n",
                        "2021年01月",
                        map2.get(key).getStore().getName(),
                        map2.get(key).getSoldAmount().toString()
                );
                writer.write(str);
            }
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
    public static void main(String[] args) {
        List<Order> orders = order();
        statistic(orders);
    }
}

Product.java
商品（SKU）

package edu.mama.ls16.homework;
/**
 * 商品（SKU）
 */
public class Product {
    //商品编号
    private String code;
    //商品名称
    private String name;
    //商品规格
    private String specs;
    public Product(String code, String name, String specs) {
        this.code = code;
        this.name = name;
        this.specs = specs;
    }
    public String getCode() {
        return code;
    }
    public String getName() {
        return name;
    }
}

Store.java
商城店铺

package edu.mama.ls16.homework;
/**
 * 商城店铺
 */
public class Store {
    //卖家名称
    private String name;
    public Store(String name) {
        this.name = name;
    }
    public String getName() {
        return name;
    }
}

User.java
商城用户（买家）

package edu.mama.ls16.homework;
/**
 * 商城用户（买家）
 */
public class User {
    //买家ID
    private String id;
    //买家名称
    private String name;
    public User(String id, String name) {
        this.id = id;
        this.name = name;
    }
    public String getId() {
        return id;
    }
    public String getName() {
        return name;
    }
}

Address.java
收货地址

package edu.mama.ls16.homework;
/**
 * 收货地址
 */
public class Address {
    //收货人姓名
    private String name;
    //收货人电话
    private String mobile;
    //收货地址
    private String address;
    public Address(String name, String mobile, String address) {
        this.name = name;
        this.mobile = mobile;
        this.address = address;
    }
    public String getName() {
        return name;
    }
    public void setName(String name) {
        this.name = name;
    }
    public String getMobile() {
        return mobile;
    }
    public void setMobile(String mobile) {
        this.mobile = mobile;
    }
    public String getAddress() {
        return address;
    }
    public void setAddress(String address) {
        this.address = address;
    }
}

Order.java
商城订单

package edu.mama.ls16.homework;
import java.math.BigDecimal;
import java.time.LocalDate;
import java.time.LocalDateTime;
/**
 * 商城订单
 */
public class Order {
    //TODO 写下你的代码，包括属性、构造方法、getter和setter、其它方法
    //订单编号
    private String code;
    //下单时间
    private LocalDate orderDate;
    //订单备注
    private String remark;
    //实付金额
    private BigDecimal actualAmount;
    //支付时间
    private LocalDateTime payTime;
    //所售商品
    private Product product;
    //卖家
    private Store seller;
    //买家
    private User buyer;
    //收货地址
    private Address address;
    public Order(String code, LocalDate orderDate, String remark, BigDecimal actualAmount, LocalDateTime payTime, Product product, Store seller, User buyer, Address address) {
        this.code = code;
        this.orderDate = orderDate;
        this.remark = remark;
        this.actualAmount = actualAmount;
        this.payTime = payTime;
        this.product = product;
        this.seller = seller;
        this.buyer = buyer;
        this.address = address;
    }
    public String getCode() {
        return code;
    }
    public void setCode(String code) {
        this.code = code;
    }
    public LocalDate getOrderDate() {
        return orderDate;
    }
    public void setOrderDate(LocalDate orderDate) {
        this.orderDate = orderDate;
    }
    public String getRemark() {
        return remark;
    }
    public void setRemark(String remark) {
        this.remark = remark;
    }
    public BigDecimal getActualAmount() {
        return actualAmount;
    }
    public void setActualAmount(BigDecimal actualAmount) {
        this.actualAmount = actualAmount;
    }
    public LocalDateTime getPayTime() {
        return payTime;
    }
    public void setPayTime(LocalDateTime payTime) {
        this.payTime = payTime;
    }
    public Product getProduct() {
        return product;
    }
    public void setProduct(Product product) {
        this.product = product;
    }
    public Store getSeller() {
        return seller;
    }
    public void setSeller(Store seller) {
        this.seller = seller;
    }
    public User getBuyer() {
        return buyer;
    }
    public void setBuyer(User buyer) {
        this.buyer = buyer;
    }
    public Address getAddress() {
        return address;
    }
    public void setAddress(Address address) {
        this.address = address;
    }
}

ProductSales.java
商品销量统计

package edu.mama.ls16.homework;
import java.math.BigDecimal;
/**
 * 商品销量统计
 */
public class ProductSales {
    private String month;
    //商品
    private Product sku;
    //销售量
    private int soldNum;
    //销售额
    private BigDecimal soldAmount = BigDecimal.ZERO;
    public ProductSales(String month, Product sku, int soldNum, BigDecimal soldAmount) {
        this.month = month;
        this.sku = sku;
        this.soldNum = soldNum;
        this.soldAmount = soldAmount;
    }
    //方法
    public ProductSales addSoldNum(int soldNum) {
        this.soldNum += soldNum;
        return this;
    }
    public ProductSales addSoldAmount(BigDecimal soldAmount) {
        this.soldAmount = this.soldAmount.add(soldAmount);
        return this;
    }
    //getter
    public String getMonth() {
        return month;
    }
    public Product getSku() {
        return sku;
    }
    public int getSoldNum() {
        return soldNum;
    }
    public BigDecimal getSoldAmount() {
        return soldAmount;
    }
}

BuyerSales.java
用户消费统计

package edu.mama.ls16.homework;
import java.math.BigDecimal;
/**
 *  用户消费统计
 */
public class BuyerSales {
    //月份
    private String month;
    //买家
    private User user;
    //销售量
    private int soldNum;
    //销售额
    private BigDecimal soldAmount = BigDecimal.ZERO;
    public BuyerSales(String month, User user, int soldNum, BigDecimal soldAmount) {
        this.month = month;
        this.user = user;
        this.soldNum = soldNum;
        this.soldAmount = soldAmount;
    }
    public BuyerSales addSoldNum(int soldNum) {
        this.soldNum += soldNum;
        return this;
    }
    public BuyerSales addSoldAmount(BigDecimal soldAmount) {
        this.soldAmount = this.soldAmount.add(soldAmount);
        return this;
    }
    public String getMonth() {
        return month;
    }
    public void setMonth(String month) {
        this.month = month;
    }
    public User getUser() {
        return user;
    }
    public void setUser(User user) {
        this.user = user;
    }
    public int getSoldNum() {
        return soldNum;
    }
    public void setSoldNum(int soldNum) {
        this.soldNum = soldNum;
    }
    public BigDecimal getSoldAmount() {
        return soldAmount;
    }
    public void setSoldAmount(BigDecimal soldAmount) {
        this.soldAmount = soldAmount;
    }
}

StoreSales.java
卖家营业额统计

package edu.mama.ls16.homework;
import java.math.BigDecimal;
/**
 *  卖家营业额统计
 */
public class StoreSales {
    //月份
    private String month;
    //店铺
    private Store store;
    //销售额
    private BigDecimal soldAmount = BigDecimal.ZERO;
    public StoreSales(String month, Store store, BigDecimal soldAmount) {
        this.month = month;
        this.store = store;
        this.soldAmount = soldAmount;
    }
    public StoreSales addSoldAmount(BigDecimal soldAmount) {
        this.soldAmount = this.soldAmount.add(soldAmount);
        return this;
    }
    public String getMonth() {
        return month;
    }
    public void setMonth(String month) {
        this.month = month;
    }
    public Store getStore() {
        return store;
    }
    public void setStore(Store store) {
        this.store = store;
    }
    public BigDecimal getSoldAmount() {
        return soldAmount;
    }
    public void setSoldAmount(BigDecimal soldAmount) {
        this.soldAmount = soldAmount;
    }
}

结果