diff --git a/src/main/java/com/dsideal/QingLong/Collect/Controller/CollectController.java b/src/main/java/com/dsideal/QingLong/Collect/Controller/CollectController.java
index 5bbfae9e..bbcc9dcc 100644
--- a/src/main/java/com/dsideal/QingLong/Collect/Controller/CollectController.java
+++ b/src/main/java/com/dsideal/QingLong/Collect/Controller/CollectController.java
@@ -532,9 +532,7 @@ public class CollectController extends Controller {
 
             //数据有效行数
             int lastRowNum = sheet.getLastRowNum();
-            if (data_start_row > lastRowNum) {
-                blankSheet.add(i);
-            }
+            if (data_start_row > lastRowNum) blankSheet.add(i);
             //遍历每一列
             List<Record> list = cm.getSheetMapping(upload_excel_filename_finish, i);
             for (Record record : list) {//列
@@ -599,12 +597,10 @@ public class CollectController extends Controller {
         FileOutputStream fileOut = new FileOutputStream(f2);
         wb.write(fileOut);
 
-        if (blankSheet.size() > 0) {
-            String t = "";
-            for (Integer i : blankSheet) {
-                t += i + ",";
-            }
-            t = t.substring(0, t.length() - 1);
+        if (!blankSheet.isEmpty()) {
+            StringBuilder t = new StringBuilder();
+            for (Integer i : blankSheet) t.append(i).append(",");
+            t = new StringBuilder(t.substring(0, t.length() - 1));
             Kv kv = Kv.create();
             kv.set("success", false);
             kv.set("message", "检查到输入的文件中存在空的Sheet表，序号为" + t + "，请下载文件后查看处理后，重新上传！");