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兼容Excel下拉框内容过多无法显示的问题(I5XB6I)

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RuoYi 2022-11-21 12:20:36 +08:00
parent b4bdd4f306
commit 142f6ad6a0
1 changed files with 63 additions and 2 deletions
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65
ruoyi-common/src/main/java/com/ruoyi/common/utils/poi/ExcelUtil.java
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@ -48,6 +48,7 @@ import org.apache.poi.ss.usermodel.FillPatternType;
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 @@ public class ExcelUtil<T>
}
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);
}
}
}
@ -1087,6 +1096,58 @@ public class ExcelUtil<T>
sheet.addValidationData(dataValidation);
}
/**
* 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
*