From 142f6ad6a0ef4d780ddbe3dce396f56775f5360e Mon Sep 17 00:00:00 2001
From: RuoYi <yzz_ivy@163.com>
Date: 星期一, 21 十一月 2022 12:20:36 +0800
Subject: [PATCH] 兼容Excel下拉框内容过多无法显示的问题(I5XB6I)
---
ruoyi-common/src/main/java/com/ruoyi/common/utils/poi/ExcelUtil.java | 65 +++++++++++++++++++++++++++++++-
1 files changed, 63 insertions(+), 2 deletions(-)
diff --git a/ruoyi-common/src/main/java/com/ruoyi/common/utils/poi/ExcelUtil.java b/ruoyi-common/src/main/java/com/ruoyi/common/utils/poi/ExcelUtil.java
index cd8dd41..dcc4d1e 100644
--- a/ruoyi-common/src/main/java/com/ruoyi/common/utils/poi/ExcelUtil.java
+++ b/ruoyi-common/src/main/java/com/ruoyi/common/utils/poi/ExcelUtil.java
@@ -48,6 +48,7 @@
import org.apache.poi.ss.usermodel.Font;
import org.apache.poi.ss.usermodel.HorizontalAlignment;
import org.apache.poi.ss.usermodel.IndexedColors;
+import org.apache.poi.ss.usermodel.Name;
import org.apache.poi.ss.usermodel.PictureData;
import org.apache.poi.ss.usermodel.Row;
import org.apache.poi.ss.usermodel.Sheet;
@@ -982,8 +983,16 @@
}
if (StringUtils.isNotEmpty(attr.prompt()) || attr.combo().length > 0)
{
- // 提示信息或只能选择不能输入的列内容.
- setPromptOrValidation(sheet, attr.combo(), attr.prompt(), 1, 100, column, column);
+ if (attr.combo().length > 15 || StringUtils.join(attr.combo()).length() > 255)
+ {
+ // 如果下拉数大于15或字符串长度大于255，则使用一个新sheet存储，避免生成的模板下拉值获取不到
+ setXSSFValidationWithHidden(sheet, attr.combo(), attr.prompt(), 1, 100, column, column);
+ }
+ else
+ {
+ // 提示信息或只能选择不能输入的列内容.
+ setPromptOrValidation(sheet, attr.combo(), attr.prompt(), 1, 100, column, column);
+ }
}
}
@@ -1088,6 +1097,58 @@
}
/**
+ * 设置某些列的值只能输入预制的数据,显示下拉框（兼容超出一定数量的下拉框）.
+ *
+ * @param sheet 要设置的sheet.
+ * @param textlist 下拉框显示的内容
+ * @param promptContent 提示内容
+ * @param firstRow 开始行
+ * @param endRow 结束行
+ * @param firstCol 开始列
+ * @param endCol 结束列
+ */
+ public void setXSSFValidationWithHidden(Sheet sheet, String[] textlist, String promptContent, int firstRow, int endRow, int firstCol, int endCol)
+ {
+ String hideSheetName = "combo_" + firstCol + "_" + endCol;
+ Sheet hideSheet = wb.createSheet(hideSheetName); // 用于存储 下拉菜单数据
+ for (int i = 0; i < textlist.length; i++)
+ {
+ hideSheet.createRow(i).createCell(0).setCellValue(textlist[i]);
+ }
+ // 创建名称，可被其他单元格引用
+ Name name = wb.createName();
+ name.setNameName(hideSheetName + "_data");
+ name.setRefersToFormula(hideSheetName + "!$A$1:$A$" + textlist.length);
+ DataValidationHelper helper = sheet.getDataValidationHelper();
+ // 加载下拉列表内容
+ DataValidationConstraint constraint = helper.createFormulaListConstraint(hideSheetName + "_data");
+ // 设置数据有效性加载在哪个单元格上,四个参数分别是：起始行、终止行、起始列、终止列
+ CellRangeAddressList regions = new CellRangeAddressList(firstRow, endRow, firstCol, endCol);
+ // 数据有效性对象
+ DataValidation dataValidation = helper.createValidation(constraint, regions);
+ if (StringUtils.isNotEmpty(promptContent))
+ {
+ // 如果设置了提示信息则鼠标放上去提示
+ dataValidation.createPromptBox("", promptContent);
+ dataValidation.setShowPromptBox(true);
+ }
+ // 处理Excel兼容性问题
+ if (dataValidation instanceof XSSFDataValidation)
+ {
+ dataValidation.setSuppressDropDownArrow(true);
+ dataValidation.setShowErrorBox(true);
+ }
+ else
+ {
+ dataValidation.setSuppressDropDownArrow(false);
+ }
+
+ sheet.addValidationData(dataValidation);
+ // 设置hiddenSheet隐藏
+ wb.setSheetHidden(wb.getSheetIndex(hideSheet), true);
+ }
+
+ /**
* 解析导出值 0=男,1=女,2=未知
*
* @param propertyValue 参数值
--
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