diff --git a/servers/boe-server-all/src/main/java/com/xboe/module/boecase/api/CasesRecommendApi.java b/servers/boe-server-all/src/main/java/com/xboe/module/boecase/api/CasesRecommendApi.java
index ff551ed7..993e6db0 100644
--- a/servers/boe-server-all/src/main/java/com/xboe/module/boecase/api/CasesRecommendApi.java
+++ b/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"));
-        writer.write(dataList);
+        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();
@@ -193,29 +195,29 @@ public class CasesRecommendApi extends ApiBaseController {
             row.put("总查看时间", it.getReadEndTime());
             return row;
         }).collect(Collectors.toList());
-        if (CollectionUtil.isNotEmpty(rows)){
+        if (CollectionUtil.isNotEmpty(rows)) {
             // 通过工具类创建writer
             try (ExcelWriter writer = ExcelUtil.getWriter(true);
                  // 输出流
                  ServletOutputStream servletOutputStream = response.getOutputStream()
-            ){
+            ) {
                 // 一次性写出内容
                 writer.write(rows, true);
                 // 微调一下每个列的宽度
-                writer.setColumnWidth(0,50);
-                writer.setColumnWidth(1,16);
-                writer.setColumnWidth(2,24);
-                writer.setColumnWidth(3,34);
-                writer.setColumnWidth(4,10);
-                writer.setColumnWidth(5,20);
-                writer.setColumnWidth(6,20);
+                writer.setColumnWidth(0, 50);
+                writer.setColumnWidth(1, 16);
+                writer.setColumnWidth(2, 24);
+                writer.setColumnWidth(3, 34);
+                writer.setColumnWidth(4, 10);
+                writer.setColumnWidth(5, 20);
+                writer.setColumnWidth(6, 20);
                 // 此处的response.setContentType 和教程里的不同
                 response.setContentType("application/octet-stream");
                 // filename就是表格的名字，这个无所谓，反正前端还会重命名
-                response.setHeader("Content-Disposition","attachment;filename=推荐信息.xlsx");
+                response.setHeader("Content-Disposition", "attachment;filename=推荐信息.xlsx");
 
-                writer.flush(servletOutputStream,true);
-            }catch (Exception e){
+                writer.flush(servletOutputStream, true);
+            } catch (Exception e) {
                 throw new RuntimeException(e.getMessage());
             }
         }