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【苍穹外卖项目】Day12

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工作台

需求分析和设计

接口设计：

今日数据接口
订单管理接口
菜品总览接口
套餐总览接口
订单搜索（已完成）
各个状态的订单数量统计（已完成）

代码导入

添加WorkSpaceController.java

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 {@Autowiredprivate 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());}
}

添加WorkspaceService.java

import com.sky.vo.BusinessDataVO;
import com.sky.vo.DishOverViewVO;
import com.sky.vo.OrderOverViewVO;
import com.sky.vo.SetmealOverViewVO;
import java.time.LocalDateTime;public interface WorkspaceService {/*** 根据时间段统计营业数据* @param begin* @param end* @return*/BusinessDataVO getBusinessData(LocalDateTime begin, LocalDateTime end);/*** 查询订单管理数据* @return*/OrderOverViewVO getOrderOverView();/*** 查询菜品总览* @return*/DishOverViewVO getDishOverView();/*** 查询套餐总览* @return*/SetmealOverViewVO getSetmealOverView();}

添加WorkspaceServiceImpl.java

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 {@Autowiredprivate OrderMapper orderMapper;@Autowiredprivate UserMapper userMapper;@Autowiredprivate DishMapper dishMapper;@Autowiredprivate 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();}
}

在SetmealMapper和DishMapper中添加countByMap方法定义

	/*** 根据条件统计菜品数量* @param map* @return*/Integer countByMap(Map map);

在SetmealMapper.xml和DishMapper.xml 中添加对应SQL实现

<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>

Apache POI

介绍

Apache POI 是一个处理Miscrosoft Office各种文件格式的开源项目。简单来说就是，我们可以使用 POI 在 Java 程序中对Miscrosoft Office各种文件进行读写操作。一般情况下，POI 都是用于操作 Excel 文件。

应用场景：

银行网银系统导出交易明细
各种业务系统导出Excel报表
批量导入业务数据

入门案例

导入Apache PoI的maven坐标
将数据写入Excel文件

import org.apache.poi.xssf.usermodel.XSSFCell;
import org.apache.poi.xssf.usermodel.XSSFRow;
import org.apache.poi.xssf.usermodel.XSSFSheet;
import org.apache.poi.xssf.usermodel.XSSFWorkbook;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;public class POITest {/*** 基于POI向Excel文件写入数据* @throws Exception*/public static void write() throws Exception{//在内存中创建一个Excel文件对象XSSFWorkbook excel = new XSSFWorkbook();//创建Sheet页XSSFSheet sheet = excel.createSheet("itcast");//在Sheet页中创建行，0表示第1行XSSFRow row1 = sheet.createRow(0);//创建单元格并在单元格中设置值，单元格编号也是从0开始，1表示第2个单元格row1.createCell(1).setCellValue("姓名");row1.createCell(2).setCellValue("城市");XSSFRow row2 = sheet.createRow(1);row2.createCell(1).setCellValue("张三");row2.createCell(2).setCellValue("北京");XSSFRow row3 = sheet.createRow(2);row3.createCell(1).setCellValue("李四");row3.createCell(2).setCellValue("上海");FileOutputStream out = new FileOutputStream(new File("D:\\itcast.xlsx"));//通过输出流将内存中的Excel文件写入到磁盘上excel.write(out);//关闭资源out.flush();out.close();excel.close();}public static void main(String[] args) throws Exception {write();}
}

读取Excel文件中的数据

import org.apache.poi.xssf.usermodel.XSSFCell;
import org.apache.poi.xssf.usermodel.XSSFRow;
import org.apache.poi.xssf.usermodel.XSSFSheet;
import org.apache.poi.xssf.usermodel.XSSFWorkbook;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;public class POITest {/*** 基于POI读取Excel文件* @throws Exception*/public static void read() throws Exception{FileInputStream in = new FileInputStream(new File("D:\\itcast.xlsx"));//通过输入流读取指定的Excel文件XSSFWorkbook excel = new XSSFWorkbook(in);//获取Excel文件的第1个Sheet页XSSFSheet sheet = excel.getSheetAt(0);//获取Sheet页中的最后一行的行号int lastRowNum = sheet.getLastRowNum();for (int i = 0; i <= lastRowNum; i++) {//获取Sheet页中的行XSSFRow titleRow = sheet.getRow(i);//获取行的第2个单元格XSSFCell cell1 = titleRow.getCell(1);//获取单元格中的文本内容String cellValue1 = cell1.getStringCellValue();//获取行的第3个单元格XSSFCell cell2 = titleRow.getCell(2);//获取单元格中的文本内容String cellValue2 = cell2.getStringCellValue();System.out.println(cellValue1 + " " +cellValue2);}//关闭资源in.close();excel.close();}public static void main(String[] args) throws Exception {read();}
}

导出运营数据Excel报表

需求分析和设计

业务规则：

导出Excel形式的报表文件
导出最近30天的运营数据

注意：

当前接口没有传递参数，因为导出的是最近30天的运营数据，后端计算即可，所以不需要任何参数
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

实现步骤

1). 设计Excel模板文件

2). 查询近30天的运营数据

3). 将查询到的运营数据写入模板文件

4). 通过输出流将Excel文件下载到客户端浏览器

根据接口定义，在ReportController中创建export方法：

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

在ReportServiceImpl实现类中实现导出运营数据报表的方法:

提前将资料中的运营数据报表模板.xlsx拷贝到项目的resources/template目录中

  /**导出近30天的运营数据报表* @param response**/public void exportBusinessData(HttpServletResponse response) {LocalDate begin = LocalDate.now().minusDays(30);LocalDate end = LocalDate.now().minusDays(1);//查询概览运营数据，提供给Excel模板文件BusinessDataVO businessData = workspaceService.getBusinessData(LocalDateTime.of(begin,LocalTime.MIN), LocalDateTime.of(end, LocalTime.MAX));InputStream inputStream = this.getClass().getClassLoader().getResourceAsStream("template/运营数据报表模板.xlsx");try {//基于提供好的模板文件创建一个新的Excel表格对象XSSFWorkbook excel = new XSSFWorkbook(inputStream);//获得Excel文件中的一个Sheet页XSSFSheet sheet = excel.getSheet("Sheet1");sheet.getRow(1).getCell(1).setCellValue(begin + "至" + end);//获得第4行XSSFRow row = sheet.getRow(3);//获取单元格row.getCell(2).setCellValue(businessData.getTurnover());row.getCell(4).setCellValue(businessData.getOrderCompletionRate());row.getCell(6).setCellValue(businessData.getNewUsers());row = sheet.getRow(4);row.getCell(2).setCellValue(businessData.getValidOrderCount());row.getCell(4).setCellValue(businessData.getUnitPrice());for (int i = 0; i < 30; i++) {LocalDate date = begin.plusDays(i);//准备明细数据businessData = workspaceService.getBusinessData(LocalDateTime.of(date,LocalTime.MIN), LocalDateTime.of(date, LocalTime.MAX));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());}//通过输出流将文件下载到客户端浏览器中ServletOutputStream out = response.getOutputStream();excel.write(out);//关闭资源out.flush();out.close();excel.close();}catch (IOException e){e.printStackTrace();}}

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