----循环插入

src/main/java/com/example/device/controller/DeviceStatus.java

@@ -38,7 +38,7 @@ public class DeviceStatus {
     private ExcelExportService excelExportService;
 
 
-    @Scheduled(cron = "* * 0/1 * * ?")
+    @Scheduled(cron = "0 0 0-23 * * ?")
     // @Scheduled(cron = "0 0 1,5,7,8,11,14,17,19,21,23")
     public void generateDeviceStatus() {
         deviceStatus();
@@ -126,7 +126,6 @@ public class DeviceStatus {
         }
 
         executor.shutdown();
-        calculateSuccessRate();
     }
 
 
@@ -169,12 +168,14 @@ public class DeviceStatus {
 
     /**
      * 成功率和丢包率按小时分组
+     *
      */
+
+    @Scheduled(cron = "0 5 1 * * ?")
     public void calculateSuccessRate() {
 
         LocalDateTime todayStart = LocalDateTime.now().truncatedTo(ChronoUnit.DAYS);
         LocalDateTime currentTime = LocalDateTime.now();
-        Map<String, String> ipMap = new HashMap<>();
 
 
         Status status = new Status();

src/main/java/com/example/device/service/ExcelExportService.java

@@ -47,7 +47,11 @@ public class ExcelExportService {
             rowNum = 2;
                 List<Status> groupItems = entry.getValue();
                 for (Status ignored : groupItems) {
-                    Row row = sheet.createRow(rowNum++);
+                    int a=rowNum++;
+                    Row row = sheet.getRow(a); // 获取指定索引的行
+                    if (row == null) { // 如果行不存在，则创建新行
+                        row = sheet.createRow(a);
+                    }
                     if(flag) {
                         row.createCell(0).setCellValue(ignored.getDeviceName());
                         row.createCell(1).setCellValue(ignored.getDeviceIp());