Merge branch 'develop' of gitadmin/tuoheng_lc into release

tuoheng-admin/src/main/java/com/tuoheng/admin/service/impl/IndexServiceImpl.java

         }
         List<QuestionListDto> questionListDtoList = questionMapper.getIndexQuestion(getQuestionListDto);
         for(QuestionListDto questionListDto : questionListDtoList){
-            String[] imgHanders = questionListDto.getHandlerImage().split(",");
-            for (int i = 0; i < imgHanders.length; i++) {
-                imgHanders[i] = CommonConfig.imageURL + imgHanders[i];
+            if(questionListDto.getHandlerImage() != null){
+                String[] imgHanders = questionListDto.getHandlerImage().split(",");
+                for (int i = 0; i < imgHanders.length; i++) {
+                    imgHanders[i] = CommonConfig.imageURL + imgHanders[i];
+                }
+                String handerImg = StringUtils.join(imgHanders, ",");
+                questionListDto.setHandlerImage(handerImg);
             }
-            String handerImg = StringUtils.join(imgHanders, ",");
-            questionListDto.setHandlerImage(handerImg);
         }
         return questionListDtoList;
     }
-
-
 }