修改到处

servers/boe-server-all/src/main/java/com/xboe/module/boecase/api/CasesRecommendApi.java

@@ -131,7 +131,9 @@ public class CasesRecommendApi extends ApiBaseController {
         ExcelWriter writer = ExcelUtil.getWriter();
 
         writer.writeHeadRow(ListUtil.toList("标题"));
+        if (CollectionUtil.isNotEmpty(dataList)) {
             writer.write(dataList);
+        }
         response.setContentType("application/vnd.ms-excel;charset=utf-8");
         response.setHeader("Content-Disposition", "attachment;filename=failData.xls");
         ServletOutputStream out = response.getOutputStream();