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!666 fix: 模板导出多个字段下拉值超过100个异常，采用多个sheet的方案解决。

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* fix: 模板导出多个字段下拉值超过100个异常，采用多个sheet的方案解决。
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velenooo 2025-04-02 05:20:53 +00:00 committed by 疯狂的狮子Li
parent 9e551a0b2a
commit 023ceaaf91
1 changed files with 11 additions and 9 deletions
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20
ruoyi-common/ruoyi-common-excel/src/main/java/org/dromara/common/excel/core/ExcelDownHandler.java
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@ -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);