首页查询占比优化

wangqian
1 parent bcce1d95
Showing 1 changed file with 17 additions and 7 deletions
urbanops-module-garden/src/main/java/com/zteits/urbanops/module/garden/service/homepage/HomepageSummaryServiceImpl.java
@@ -29,6 +29,7 @@ import java.time.LocalDateTime;
 import java.time.format.DateTimeFormatter;
 import java.util.*;
 import java.util.stream.Collectors;
+import java.util.stream.IntStream;
  
 import static com.zteits.urbanops.framework.security.core.util.SecurityFrameworkUtils.getLoginUserId;
  
@@ -323,17 +324,26 @@ public class HomepageSummaryServiceImpl implements HomepageSummaryService{
         if (totalNum <= 0) {
             percents = Collections.singletonList(0);
         } else {
-            // 3. 先计算四舍五入占比
-            List<Integer> tempPercents = workOrderList.stream()
-                    .map(vo -> (int) Math.round((vo.getTotal() * 100.0) / totalNum))
+           List<Integer> tempPercents = workOrderList.stream()
+                    .map(vo -> {
+                        double percent = (vo.getTotal() * 100.0) / totalNum;
+                        int round = (int) Math.round(percent);
+                        // 核心：只要 >0 的，至少给 1%，不允许出现 0%
+                        return (round == 0 && vo.getTotal() > 0) ? 1 : round;
+                    })
                     .collect(Collectors.toList());
  
-            // 4. 核心：修正总和 = 100%（把差值补到最后一项）
+            // 校准总和 = 100%
             int sum = tempPercents.stream().mapToInt(Integer::intValue).sum();
-            int diff = 100 - sum;
+            int diff = sum - 100; // 多出来的部分，从最大值减掉
+
             if (diff != 0 && !tempPercents.isEmpty()) {
-                int lastIndex = tempPercents.size() - 1;
-                tempPercents.set(lastIndex, tempPercents.get(lastIndex) + diff);
+                // 找出最大值的索引，把差值减掉（最合理，不会出现0）
+                OptionalInt maxIndex = IntStream.range(0, tempPercents.size())
+                        .reduce((i, j) -> tempPercents.get(i) > tempPercents.get(j) ? i : j);
+                if (maxIndex.isPresent()) {
+                    tempPercents.set(maxIndex.getAsInt(), tempPercents.get(maxIndex.getAsInt()) - diff);
+                }
             }
             percents = tempPercents;
         }