updates

jeecg-module-system/jeecg-system-biz/src/main/java/org/jeecg/modules/ocr/service/impl/OcrIdentifyServiceImpl.java

@@ -1091,7 +1091,9 @@ public class OcrIdentifyServiceImpl extends ServiceImpl<OcrIdentifyMapper, OcrId
         responseBody.put("allExecutionTime",executionTime);
 
         //=========排序
-        ocrResultDTOList.sort((h1, h2) -> h1.getTag().compareTo(h2.getTag()));
+        if (CollectionUtils.isNotEmpty(ocrResultDTOList)) {
+            ocrResultDTOList.sort((h1, h2) -> h1.getTag().compareTo(h2.getTag()));
+        }
         //============
         responseBody.put("detailList", ocrResultDTOList);
         if (ocrResultDTOList.size()==0) {