修复 水肥机获取状态失败的问题

src/main/java/com/yunfeiyun/agmp/iotm/device/sf/service/impl/IotRunHaoSfServiceImpl.java

@@ -364,10 +364,11 @@ public class IotRunHaoSfServiceImpl extends IIotSfCommService {
         params.put("devBid", devBid);
 
         IotRunHaoSfdata iotRunHaoSfdata = (IotRunHaoSfdata) mongoService.findOne(IotRunHaoSfdata.class, params, "sfdataCreatedDate", "desc");
-        JSONObject dataJson = new JSONObject();
-        if (iotRunHaoSfdata != null) {
-            dataJson = iotRunHaoSfdata.getSfdataContent();
+        if(iotRunHaoSfdata == null){
+            return new JSONObject();
         }
+        JSONObject dataJson = iotRunHaoSfdata.getSfdataContent();
+
         String[] keys = new String[]{"Num-dqqf", "Num-ggsj", "Num-fqs", "Num-lgjg", "Num-lgcs", "Btn-yjqd", "Btn-zdsd"};
         String[] feiKeys = new String[]{"Num-fsjA", "Num-fsjB", "Num-fsjC", "Num-fsjD"};
         JSONObject runStatus = new JSONObject();