From 023ceaaf91447ca5b853392b91c131e7a21f28af Mon Sep 17 00:00:00 2001
From: velenooo <8834950+velenooo@user.noreply.gitee.com>
Date: Wed, 2 Apr 2025 05:20:53 +0000
Subject: [PATCH] =?UTF-8?q?!666=20fix:=20=E6=A8=A1=E6=9D=BF=E5=AF=BC?=
 =?UTF-8?q?=E5=87=BA=E5=A4=9A=E4=B8=AA=E5=AD=97=E6=AE=B5=E4=B8=8B=E6=8B=89?=
 =?UTF-8?q?=E5=80=BC=E8=B6=85=E8=BF=87100=E4=B8=AA=E5=BC=82=E5=B8=B8?=
 =?UTF-8?q?=EF=BC=8C=E9=87=87=E7=94=A8=E5=A4=9A=E4=B8=AAsheet=E7=9A=84?=
 =?UTF-8?q?=E6=96=B9=E6=A1=88=E8=A7=A3=E5=86=B3=E3=80=82=20*=20fix:=20?=
 =?UTF-8?q?=E6=A8=A1=E6=9D=BF=E5=AF=BC=E5=87=BA=E5=A4=9A=E4=B8=AA=E5=AD=97?=
 =?UTF-8?q?=E6=AE=B5=E4=B8=8B=E6=8B=89=E5=80=BC=E8=B6=85=E8=BF=87100?=
 =?UTF-8?q?=E4=B8=AA=E5=BC=82=E5=B8=B8=EF=BC=8C=E9=87=87=E7=94=A8=E5=A4=9A?=
 =?UTF-8?q?=E4=B8=AAsheet=E7=9A=84=E6=96=B9=E6=A1=88=E8=A7=A3=E5=86=B3?=
 =?UTF-8?q?=E3=80=82?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 .../common/excel/core/ExcelDownHandler.java   | 20 ++++++++++---------
 1 file changed, 11 insertions(+), 9 deletions(-)

diff --git a/ruoyi-common/ruoyi-common-excel/src/main/java/org/dromara/common/excel/core/ExcelDownHandler.java b/ruoyi-common/ruoyi-common-excel/src/main/java/org/dromara/common/excel/core/ExcelDownHandler.java
index 32fee7a6c..d10ec70e6 100644
--- a/ruoyi-common/ruoyi-common-excel/src/main/java/org/dromara/common/excel/core/ExcelDownHandler.java
+++ b/ruoyi-common/ruoyi-common-excel/src/main/java/org/dromara/common/excel/core/ExcelDownHandler.java
@@ -291,9 +291,11 @@ public class ExcelDownHandler implements SheetWriteHandler {
      * @param value    下拉选可选值
      */
     private void dropDownWithSheet(DataValidationHelper helper, Workbook workbook, Sheet sheet, Integer celIndex, List<String> value) {
+        //由于poi的写出相关问题，超过100个会被临时写进硬盘，导致后续内存合并会出Attempting to write a row[] in the range [] that is already written to disk
+        String tmpOptionsSheetName = OPTIONS_SHEET_NAME + "_" + currentOptionsColumnIndex;
         // 创建下拉数据表
-        Sheet simpleDataSheet = Optional.ofNullable(workbook.getSheet(WorkbookUtil.createSafeSheetName(OPTIONS_SHEET_NAME)))
-            .orElseGet(() -> workbook.createSheet(WorkbookUtil.createSafeSheetName(OPTIONS_SHEET_NAME)));
+        Sheet simpleDataSheet = Optional.ofNullable(workbook.getSheet(WorkbookUtil.createSafeSheetName(tmpOptionsSheetName)))
+            .orElseGet(() -> workbook.createSheet(WorkbookUtil.createSafeSheetName(tmpOptionsSheetName)));
         // 将下拉表隐藏
         workbook.setSheetHidden(workbook.getSheetIndex(simpleDataSheet), true);
         // 完善纵向的一级选项数据表
@@ -302,9 +304,9 @@ public class ExcelDownHandler implements SheetWriteHandler {
             // 获取每一选项行，如果没有则创建
             Row row = Optional.ofNullable(simpleDataSheet.getRow(i))
                 .orElseGet(() -> simpleDataSheet.createRow(finalI));
-            // 获取本级选项对应的选项列，如果没有则创建
-            Cell cell = Optional.ofNullable(row.getCell(currentOptionsColumnIndex))
-                .orElseGet(() -> row.createCell(currentOptionsColumnIndex));
+            // 获取本级选项对应的选项列，如果没有则创建。上述采用多个sheet,默认索引为1列
+            Cell cell = Optional.ofNullable(row.getCell(0))
+                .orElseGet(() -> row.createCell(0));
             // 设置值
             cell.setCellValue(value.get(i));
         }
@@ -312,13 +314,13 @@ public class ExcelDownHandler implements SheetWriteHandler {
         // 创建名称管理器
         Name name = workbook.createName();
         // 设置名称管理器的别名
-        String nameName = String.format("%s_%d", OPTIONS_SHEET_NAME, celIndex);
+        String nameName = String.format("%s_%d", tmpOptionsSheetName, celIndex);
         name.setNameName(nameName);
         // 以纵向第一列创建一级下拉拼接引用位置
         String function = String.format("%s!$%s$1:$%s$%d",
-            OPTIONS_SHEET_NAME,
-            getExcelColumnName(currentOptionsColumnIndex),
-            getExcelColumnName(currentOptionsColumnIndex),
+            tmpOptionsSheetName,
+            getExcelColumnName(0),
+            getExcelColumnName(0),
             value.size());
         // 设置名称管理器的引用位置
         name.setRefersToFormula(function);