diff --git a/zc-business/src/main/java/com/zc/business/controller/DcDeviceController.java b/zc-business/src/main/java/com/zc/business/controller/DcDeviceController.java
index 06802610..bc99bd59 100644
--- a/zc-business/src/main/java/com/zc/business/controller/DcDeviceController.java
+++ b/zc-business/src/main/java/com/zc/business/controller/DcDeviceController.java
@@ -31,6 +31,7 @@ import javax.validation.Valid;
 import java.io.IOException;
 import java.lang.reflect.Field;
 import java.util.*;
+import java.util.stream.Collectors;
 
 /**
  * 设备Controller
@@ -247,16 +248,19 @@ public class DcDeviceController extends BaseController {
             JSONObject formatValue = JSON.parseObject(jsonObject.get("formatValue").toString());
             map.put("1", formatValue.get("1"));
             map.put("3", formatValue.get("3"));
-            map.put("timestamp", formatValue.get("equipmentReportingTime"));
+            map.put("timestamp", formatValue.get("equipmentReportingTime") == null? "":formatValue.get("equipmentReportingTime"));
             list.add(map);
         });
-        Collections.sort(list, new Comparator<Map<String, Object>>() {
+        List<Map<String, Object>> newList = list.stream()
+                .filter(map-> !map.get("timestamp").equals(""))
+                        .collect(Collectors.toList());
+        Collections.sort(newList, new Comparator<Map<String, Object>>() {
             @Override
             public int compare(Map<String, Object> map1, Map<String, Object> map2) {
                 return map1.get("timestamp").toString().compareTo(map2.get("timestamp").toString());
             }
         });
-        return AjaxResult.success(list);
+        return AjaxResult.success(newList);
     }
 
     /**