fixbug

server-common/src/main/java/com/makeit/module/iot/service/IotProductDeviceService.java

@@ -262,7 +262,7 @@ public class IotProductDeviceService extends IotCommonService {
         try {
 
             ResponseMessage responseMessage = sendPost(url, request);
-            if (responseMessage.getStatus() == 200) {
+            if (responseMessage.getStatus() == 200 && responseMessage.getResult() != null) {
                 IotPagerResult pagerResult = JSON.parseObject(responseMessage.getResult().toString(), IotPagerResult.class);
                 List<DeviceOperationLogEntity> deviceOperationLogEntities = JSONArray.parseArray(pagerResult.getData().toString()).toJavaList(DeviceOperationLogEntity.class);
                 return deviceOperationLogEntities;