Day12 数据统计-Excel报表

工作台

需求分析和设计

代码导入

package com.sky.controller.admin;

import com.sky.result.Result;
import com.sky.service.WorkspaceService;
import com.sky.vo.BusinessDataVO;
import com.sky.vo.DishOverViewVO;
import com.sky.vo.OrderOverViewVO;
import com.sky.vo.SetmealOverViewVO;
import io.swagger.annotations.Api;
import io.swagger.annotations.ApiOperation;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
import java.time.LocalDateTime;
import java.time.LocalTime;

/**
 * 工作台
 */
@RestController
@RequestMapping("/admin/workspace")
@Slf4j
@Api(tags = "工作台相关接口")
public class WorkSpaceController {

    @Autowired
    private WorkspaceService workspaceService;

    /**
     * 工作台今日数据查询
     * @return
     */
    @GetMapping("/businessData")
    @ApiOperation("工作台今日数据查询")
    public Result<BusinessDataVO> businessData(){
        //获得当天的开始时间
        LocalDateTime begin = LocalDateTime.now().with(LocalTime.MIN);
        //获得当天的结束时间
        LocalDateTime end = LocalDateTime.now().with(LocalTime.MAX);

        BusinessDataVO businessDataVO = workspaceService.getBusinessData(begin, end);
        return Result.success(businessDataVO);
    }

    /**
     * 查询订单管理数据
     * @return
     */
    @GetMapping("/overviewOrders")
    @ApiOperation("查询订单管理数据")
    public Result<OrderOverViewVO> orderOverView(){
        return Result.success(workspaceService.getOrderOverView());
    }

    /**
     * 查询菜品总览
     * @return
     */
    @GetMapping("/overviewDishes")
    @ApiOperation("查询菜品总览")
    public Result<DishOverViewVO> dishOverView(){
        return Result.success(workspaceService.getDishOverView());
    }

    /**
     * 查询套餐总览
     * @return
     */
    @GetMapping("/overviewSetmeals")
    @ApiOperation("查询套餐总览")
    public Result<SetmealOverViewVO> setmealOverView(){
        return Result.success(workspaceService.getSetmealOverView());
    }
}

package com.sky.service.impl;

import com.sky.constant.StatusConstant;
import com.sky.entity.Orders;
import com.sky.mapper.DishMapper;
import com.sky.mapper.OrderMapper;
import com.sky.mapper.SetmealMapper;
import com.sky.mapper.UserMapper;
import com.sky.service.WorkspaceService;
import com.sky.vo.BusinessDataVO;
import com.sky.vo.DishOverViewVO;
import com.sky.vo.OrderOverViewVO;
import com.sky.vo.SetmealOverViewVO;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import java.time.LocalDateTime;
import java.time.LocalTime;
import java.util.HashMap;
import java.util.Map;

@Service
@Slf4j
public class WorkspaceServiceImpl implements WorkspaceService {

    @Autowired
    private OrderMapper orderMapper;
    @Autowired
    private UserMapper userMapper;
    @Autowired
    private DishMapper dishMapper;
    @Autowired
    private SetmealMapper setmealMapper;

    /**
     * 根据时间段统计营业数据
     * @param begin
     * @param end
     * @return
     */
    public BusinessDataVO getBusinessData(LocalDateTime begin, LocalDateTime end) {
        /**
         * 营业额：当日已完成订单的总金额
         * 有效订单：当日已完成订单的数量
         * 订单完成率：有效订单数 / 总订单数
         * 平均客单价：营业额 / 有效订单数
         * 新增用户：当日新增用户的数量
         */

        Map map = new HashMap();
        map.put("begin",begin);
        map.put("end",end);

        //查询总订单数
        Integer totalOrderCount = orderMapper.countByMap(map);

        map.put("status", Orders.COMPLETED);
        //营业额
        Double turnover = orderMapper.sumByMap(map);
        turnover = turnover == null? 0.0 : turnover;

        //有效订单数
        Integer validOrderCount = orderMapper.countByMap(map);

        Double unitPrice = 0.0;

        Double orderCompletionRate = 0.0;
        if(totalOrderCount != 0 && validOrderCount != 0){
            //订单完成率
            orderCompletionRate = validOrderCount.doubleValue() / totalOrderCount;
            //平均客单价
            unitPrice = turnover / validOrderCount;
        }

        //新增用户数
        Integer newUsers = userMapper.countByMap(map);

        return BusinessDataVO.builder()
                .turnover(turnover)
                .validOrderCount(validOrderCount)
                .orderCompletionRate(orderCompletionRate)
                .unitPrice(unitPrice)
                .newUsers(newUsers)
                .build();
    }


    /**
     * 查询订单管理数据
     *
     * @return
     */
    public OrderOverViewVO getOrderOverView() {
        Map map = new HashMap();
        map.put("begin", LocalDateTime.now().with(LocalTime.MIN));
        map.put("status", Orders.TO_BE_CONFIRMED);

        //待接单
        Integer waitingOrders = orderMapper.countByMap(map);

        //待派送
        map.put("status", Orders.CONFIRMED);
        Integer deliveredOrders = orderMapper.countByMap(map);

        //已完成
        map.put("status", Orders.COMPLETED);
        Integer completedOrders = orderMapper.countByMap(map);

        //已取消
        map.put("status", Orders.CANCELLED);
        Integer cancelledOrders = orderMapper.countByMap(map);

        //全部订单
        map.put("status", null);
        Integer allOrders = orderMapper.countByMap(map);

        return OrderOverViewVO.builder()
                .waitingOrders(waitingOrders)
                .deliveredOrders(deliveredOrders)
                .completedOrders(completedOrders)
                .cancelledOrders(cancelledOrders)
                .allOrders(allOrders)
                .build();
    }

    /**
     * 查询菜品总览
     *
     * @return
     */
    public DishOverViewVO getDishOverView() {
        Map map = new HashMap();
        map.put("status", StatusConstant.ENABLE);
        Integer sold = dishMapper.countByMap(map);

        map.put("status", StatusConstant.DISABLE);
        Integer discontinued = dishMapper.countByMap(map);

        return DishOverViewVO.builder()
                .sold(sold)
                .discontinued(discontinued)
                .build();
    }

    /**
     * 查询套餐总览
     *
     * @return
     */
    public SetmealOverViewVO getSetmealOverView() {
        Map map = new HashMap();
        map.put("status", StatusConstant.ENABLE);
        Integer sold = setmealMapper.countByMap(map);

        map.put("status", StatusConstant.DISABLE);
        Integer discontinued = setmealMapper.countByMap(map);

        return SetmealOverViewVO.builder()
                .sold(sold)
                .discontinued(discontinued)
                .build();
    }
}

<select id="countByMap" resultType="java.lang.Integer">
select count(id) from dish
<where>
<if test="status != null"> and status = #{status} </if>
<if test="categoryId != null"> and category_id = #{categoryId} </if>
</where>
</select>

    <select id="countByMap" resultType="java.lang.Integer">
        select count(id) from sky_take_out.setmeal
        <where>
            <if test="status != null"> and status = #{status} </if>
            <if test="categoryId != null"> and category_id = #{categoryId} </if>
        </where>
    </select>

功能测试

Apache POI

介绍

入门案例

首先来看写入

package com.sky.test;

import org.apache.poi.xssf.usermodel.XSSFRow;
import org.apache.poi.xssf.usermodel.XSSFSheet;
import org.apache.poi.xssf.usermodel.XSSFWorkbook;

import java.io.FileNotFoundException;
import java.io.FileOutputStream;

public class POITest {

    /**
     * 通过 POI 创建 Excel 文件并且写入文件内容
     */
    public static void write() throws Exception {
        //在文件中创建一个 excel 文件
        XSSFWorkbook excel = new XSSFWorkbook();
        //在Excel文件中创建一个 sheet 页
        XSSFSheet sheet = excel.createSheet("info");
        //在sheet中创建行对象，rownum 编号从 0 开始
        XSSFRow row = sheet.createRow(1);
        //创建单元格并且写入文件内容
        row.createCell(1).setCellValue("姓名");
        row.createCell(2).setCellValue("城市");

        //创建一个新行
        row = sheet.createRow(2);
        row.createCell(1).setCellValue("张三");
        row.createCell(2).setCellValue("北京");

        //通过输出流将内存中的Excel文件写入到磁盘
        FileOutputStream fileOutputStream = new FileOutputStream(("D:\\Cangqiong-Waimai\\info.xlsx"));
        excel.write(fileOutputStream);

        //关闭资源
        fileOutputStream.close();
        excel.close();
    }

    public static void main(String[] args) throws Exception {
        write();
    }
}

然后来看读出

/**
     * 通过 POI 读取 Excel 文件中的内容
     * @throws Exception
     */
    public static void read() throws Exception{

        InputStream in = new FileInputStream(("D:\\Cangqiong-Waimai\\info.xlsx"));

        //读取磁盘上已经存在的 Excel 文件
        XSSFWorkbook excel = new XSSFWorkbook(in);
        //读取 Excel 文件中的第一个 sheet 页
        XSSFSheet sheet = excel.getSheetAt(0);

        //获取 sheet 页中最后一行的行号
        int lastRowNum = sheet.getLastRowNum();

        for(int i = 1; i <= lastRowNum; i ++){
            //获得某一行
            XSSFRow row = sheet.getRow(i);
            //获得单元格对象
            String stringCellValue1 = row.getCell(1).getStringCellValue();
            String stringCellValue2 = row.getCell(2).getStringCellValue();
            System.out.println(stringCellValue1 + " " + stringCellValue2);
        }

        //关闭资源
        excel.close();
        in.close();
    }

导出运营数据Excel报表

需求分析和设计

注意：当前接口没有返回数据，因为报表导出功能本质上是文件下载，服务端会通过输出流将 Excel 文件下载到客户端浏览器

代码开发

模板文件是已经提供好的

将该文件放在项目中

    /**
     * 导出运营数据报表
     */
    @GetMapping("/export")
    @ApiOperation("导出运营数据报表")
    public void export(HttpServletResponse response){
        log.info("导出运营数据");
        reportService.exportBusinessData(response);
    }

 @Override
    public void exportBusinessData(HttpServletResponse response) {
        //1：查询数据库，获取营业数据 -- 查询最近30天
        LocalDate dateBegin = LocalDate.now().minusDays(30);
        LocalDate dateEnd = LocalDate.now().minusDays(1);


        BusinessDataVO businessDataVO = workspaceService.getBusinessData(LocalDateTime.of(dateBegin, LocalTime.MIN), LocalDateTime.of(dateEnd, LocalTime.MAX));

        //2：通过 POI 将数据写入 Excel 文件中
        InputStream in = this.getClass().getClassLoader().getResourceAsStream("template/运营数据报表模板.xlsx");

        try {
            //基于模板文件创建一个新的 Excel 文件
            XSSFWorkbook excel = new XSSFWorkbook(in);

            //获取表格文件的 Sheet 页
            XSSFSheet sheet = excel.getSheet("Sheet1");

            //填充数据 -- 时间
            sheet.getRow(1).getCell(1).setCellValue("时间：" + dateBegin + " 至 " + dateEnd);

            // 获得第4行
            XSSFRow row = sheet.getRow(3);
            row.getCell(2).setCellValue(businessDataVO.getTurnover());
            row.getCell(4).setCellValue(businessDataVO.getOrderCompletionRate());
            row.getCell(6).setCellValue(businessDataVO.getNewUsers());

            // 获得第5行
            row = sheet.getRow(4);
            row.getCell(2).setCellValue(businessDataVO.getValidOrderCount());
            row.getCell(4).setCellValue(businessDataVO.getUnitPrice());

            //填充明细数据
            for(int i = 0; i < 30; i ++){
                LocalDate date = dateBegin.plusDays(i);
                BusinessDataVO businessData = workspaceService.getBusinessData(LocalDateTime.of(date, LocalTime.MIN), LocalDateTime.of(date, LocalTime.MAX));

                //获得某一行
                row = sheet.getRow(7 + i);
                row.getCell(1).setCellValue(date.toString());
                row.getCell(2).setCellValue(businessData.getTurnover());
                row.getCell(3).setCellValue(businessData.getValidOrderCount());
                row.getCell(4).setCellValue(businessData.getOrderCompletionRate());
                row.getCell(5).setCellValue(businessData.getUnitPrice());
                row.getCell(6).setCellValue(businessData.getNewUsers());
            }

            //3：通过输出流将 Excel 文件下载到客户端浏览器
            ServletOutputStream out = response.getOutputStream();
            excel.write(out);
            //关闭资源
            out.close();
            excel.close();
        } catch (IOException e) {
            e.printStackTrace();
        }


    }

功能测试