fix: 修复返回字符串是“”的错误

@@ -3,6 +3,7 @@ package org.thingsboard.server.dao.yunteng.impl;
 import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
 import com.google.common.util.concurrent.*;
 import lombok.RequiredArgsConstructor;
+import org.apache.commons.lang3.StringUtils;
 import org.checkerframework.checker.nullness.qual.Nullable;
 import org.springframework.scheduling.annotation.Async;
 import org.springframework.stereotype.Service;
@@ -79,19 +80,19 @@ public class HomePageServiceImpl implements HomePageService {
     LocalDateTime endTime = LocalDateTime.of(nowTime.toLocalDate(), LocalTime.MAX);
     HomePageTopMessage messageInfo = new HomePageTopMessage(FastIotConstants.MagicNumber.ZERO);
     BaseHomePageTop alarm = new BaseHomePageTop(FastIotConstants.MagicNumber.ZERO);
-    Map<String,Object> queryMap = new HashMap<>();
+    Map<String, Object> queryMap = new HashMap<>();
     List<DeviceDTO> deviceList;
     if (isPtSysAdmin || isPtAdmin) {
       setTenantInfoData(homePageLeftTopDTO, startTime, endTime);
       setCustomerInfoData(homePageLeftTopDTO, startTime, endTime);
     } else if (isTenantAdmin) {
-      queryMap.put("tenantId",tenantId);
+      queryMap.put("tenantId", tenantId);
       setAlarmAndMessageInfo(tenantId, messageInfo, alarm);
 
     } else {
-      String customerId =  userMapper.findCustomerIdByUserId(currentUserId);
-      //查询customerId
-      queryMap.put("customerId",customerId);
+      String customerId = userMapper.findCustomerIdByUserId(currentUserId);
+      // 查询customerId
+      queryMap.put("customerId", customerId);
     }
     deviceList = deviceMapper.findDevices(queryMap);
     homeDeviceInfo = new HomeDeviceInfoDTO(FastIotConstants.MagicNumber.ZERO);
@@ -304,7 +305,11 @@ public class HomePageServiceImpl implements HomePageService {
                     .keySet()
                     .forEach(
                         mapKey -> {
-                          Integer value = Integer.valueOf(tsValueMap.get(mapKey).getValue());
+                          String tsValue = tsValueMap.get(mapKey).getValue();
+                          Integer value =
+                              StringUtils.isEmpty(tsValue)
+                                  ? FastIotConstants.MagicNumber.ZERO
+                                  : Integer.valueOf(tsValue);
                           switch (mapKey) {
                             case "createdAlarmsCount":
                               alarm.setSumCount(value);