苍穹外卖--用户统计功能实现

sky-server/src/main/java/com/sky/service/ReportService.java

@@ -1,6 +1,7 @@
 package com.sky.service;
 
 import com.sky.vo.TurnoverReportVO;
+import com.sky.vo.UserReportVO;
 
 import java.time.LocalDate;
 
@@ -12,4 +13,12 @@ public interface ReportService {
      * @return
      */
     TurnoverReportVO getTurnoverStatistics(LocalDate begin, LocalDate end);
+
+    /**
+     * 用户统计
+     * @param begin
+     * @param end
+     * @return
+     */
+    UserReportVO getUserStatistics(LocalDate begin, LocalDate end);
 }

sky-server/src/main/java/com/sky/service/impl/ReportServiceImpl.java

@@ -2,8 +2,10 @@ package com.sky.service.impl;
 
 import com.sky.entity.Orders;
 import com.sky.mapper.OrderMapper;
+import com.sky.mapper.UserMapper;
 import com.sky.service.ReportService;
 import com.sky.vo.TurnoverReportVO;
+import com.sky.vo.UserReportVO;
 import org.apache.commons.lang3.StringUtils;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.stereotype.Service;
@@ -22,6 +24,9 @@ public class ReportServiceImpl implements ReportService {
     @Autowired
     private OrderMapper orderMapper;
 
+    @Autowired
+    private UserMapper userMapper;
+
 
     /**
      * 统计指定时间内每天的营业额数据
@@ -69,4 +74,49 @@ public class ReportServiceImpl implements ReportService {
 
         return turnoverReportVO;
     }
+
+    /**
+     * 用户统计
+     * @param begin
+     * @param end
+     * @return
+     */
+    @Override
+    public UserReportVO getUserStatistics(LocalDate begin, LocalDate end) {
+        //根据对应的日期，将当天的所有已完成的订单查询出来，并统计总金额（sum）
+        List<LocalDate> dateList = new ArrayList<>();
+        dateList.add(begin);
+        //不停地创建日期对象，直到end
+        while (!begin.equals(end)){
+            begin =  begin.plusDays(1);
+            dateList.add(begin);
+        }
+
+        //定义2个集合，分别保存总用户数量和新用户数量
+        //select count(1) from user where create_time < ?;
+        //select count(1) from user where create_time < ? and create_time > ?;
+        List<Integer> totalUserList = new ArrayList<>();
+        List<Integer> newUserList = new ArrayList<>();
+
+        for (LocalDate localDate : dateList) {
+            //根据指定的日期查询，当日的总用户数和新用户数
+            LocalDateTime beginTime = LocalDateTime.of(localDate, LocalTime.MIN);
+            LocalDateTime endTime = LocalDateTime.of(localDate, LocalTime.MAX);
+            Map map = new HashMap();
+            map.put("end", endTime);
+            Integer totalUserCount = userMapper.countByMap(map);
+            totalUserList.add(totalUserCount);
+            map.put("begin", beginTime);
+            Integer newUserCount = userMapper.countByMap(map);
+            newUserList.add(newUserCount);
+        }
+        //封装返回结果
+        UserReportVO userReportVO = UserReportVO.builder()
+                .dateList(StringUtils.join(dateList, ","))
+                .totalUserList(StringUtils.join(totalUserList, ","))
+                .newUserList(StringUtils.join(newUserList, ","))
+                .build();
+
+        return userReportVO;
+    }
 }