fix: 设备最后上数时间，新增字段，接口调用，小程序显示。

intc-modules/intc-iot/src/main/java/com/intc/iot/handler/DeviceDataHandler.java

@@ -40,7 +40,9 @@ import org.springframework.stereotype.Component;
 
 import java.time.Duration;
 import java.time.LocalDateTime;
+import java.time.ZoneId;
 import java.time.format.DateTimeFormatter;
+import java.util.Date;
 import java.util.HashMap;
 import java.util.List;
 import java.util.Map;
@@ -2595,6 +2597,7 @@ public class DeviceDataHandler {
             if (sensorData.getBattery() != null) {
                 updateDevice.setValueBattery(sensorData.getBattery().intValue());
             }
+            updateDevice.setLastReportTime(parseSensorDataTime(sensorData));
             int updated = deviceMapper.updateById(updateDevice);
             if (updated > 0) {
                 log.debug("设备实时数据已更新: {}", deviceName);
@@ -2604,6 +2607,29 @@ public class DeviceDataHandler {
         }
     }
 
+    private Date parseSensorDataTime(DeviceSensorData sensorData) {
+        String time = StrUtil.blankToDefault(sensorData.getCreateTime(), sensorData.getTime());
+        if (StrUtil.isBlank(time)) {
+            return new Date();
+        }
+        try {
+            return Date.from(LocalDateTime.parse(normalizeSensorDataTime(time), DATETIME_FORMATTER)
+                .atZone(ZoneId.systemDefault())
+                .toInstant());
+        } catch (Exception e) {
+            log.warn("解析传感器上数时间失败，使用当前服务器时间: {}", time);
+            return new Date();
+        }
+    }
+
+    private String normalizeSensorDataTime(String time) {
+        String normalized = time.trim();
+        if (normalized.length() > 19) {
+            normalized = normalized.substring(0, 19);
+        }
+        return normalized.replace('T', ' ');
+    }
+
     /**
      * 溶解氧联动控制（参考 C# SetDeviceSwitchLinkedOpen 逻辑）
      * <ul>