兼容Excel下拉框内容过多无法显示的问题(I5XB6I)
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@ -48,6 +48,7 @@ import org.apache.poi.ss.usermodel.FillPatternType;
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import org.apache.poi.ss.usermodel.Font;
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import org.apache.poi.ss.usermodel.Font;
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import org.apache.poi.ss.usermodel.HorizontalAlignment;
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import org.apache.poi.ss.usermodel.HorizontalAlignment;
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import org.apache.poi.ss.usermodel.IndexedColors;
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import org.apache.poi.ss.usermodel.IndexedColors;
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import org.apache.poi.ss.usermodel.Name;
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import org.apache.poi.ss.usermodel.PictureData;
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import org.apache.poi.ss.usermodel.PictureData;
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import org.apache.poi.ss.usermodel.Row;
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import org.apache.poi.ss.usermodel.Row;
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import org.apache.poi.ss.usermodel.Sheet;
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import org.apache.poi.ss.usermodel.Sheet;
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@ -982,8 +983,16 @@ public class ExcelUtil<T>
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}
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}
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if (StringUtils.isNotEmpty(attr.prompt()) || attr.combo().length > 0)
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if (StringUtils.isNotEmpty(attr.prompt()) || attr.combo().length > 0)
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{
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{
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// 提示信息或只能选择不能输入的列内容.
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if (attr.combo().length > 15 || StringUtils.join(attr.combo()).length() > 255)
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setPromptOrValidation(sheet, attr.combo(), attr.prompt(), 1, 100, column, column);
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{
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// 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
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setXSSFValidationWithHidden(sheet, attr.combo(), attr.prompt(), 1, 100, column, column);
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}
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else
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{
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// 提示信息或只能选择不能输入的列内容.
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setPromptOrValidation(sheet, attr.combo(), attr.prompt(), 1, 100, column, column);
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}
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}
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}
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}
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}
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@ -1087,6 +1096,58 @@ public class ExcelUtil<T>
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sheet.addValidationData(dataValidation);
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sheet.addValidationData(dataValidation);
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}
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}
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/**
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* 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).
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*
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* @param sheet 要设置的sheet.
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* @param textlist 下拉框显示的内容
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* @param promptContent 提示内容
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* @param firstRow 开始行
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* @param endRow 结束行
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* @param firstCol 开始列
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* @param endCol 结束列
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*/
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public void setXSSFValidationWithHidden(Sheet sheet, String[] textlist, String promptContent, int firstRow, int endRow, int firstCol, int endCol)
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{
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String hideSheetName = "combo_" + firstCol + "_" + endCol;
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Sheet hideSheet = wb.createSheet(hideSheetName); // 用于存储 下拉菜单数据
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for (int i = 0; i < textlist.length; i++)
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{
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hideSheet.createRow(i).createCell(0).setCellValue(textlist[i]);
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}
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// 创建名称,可被其他单元格引用
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Name name = wb.createName();
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name.setNameName(hideSheetName + "_data");
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name.setRefersToFormula(hideSheetName + "!$A$1:$A$" + textlist.length);
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DataValidationHelper helper = sheet.getDataValidationHelper();
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// 加载下拉列表内容
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DataValidationConstraint constraint = helper.createFormulaListConstraint(hideSheetName + "_data");
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// 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
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CellRangeAddressList regions = new CellRangeAddressList(firstRow, endRow, firstCol, endCol);
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// 数据有效性对象
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DataValidation dataValidation = helper.createValidation(constraint, regions);
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if (StringUtils.isNotEmpty(promptContent))
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{
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// 如果设置了提示信息则鼠标放上去提示
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dataValidation.createPromptBox("", promptContent);
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dataValidation.setShowPromptBox(true);
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}
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// 处理Excel兼容性问题
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if (dataValidation instanceof XSSFDataValidation)
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{
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dataValidation.setSuppressDropDownArrow(true);
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dataValidation.setShowErrorBox(true);
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}
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else
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{
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dataValidation.setSuppressDropDownArrow(false);
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}
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sheet.addValidationData(dataValidation);
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// 设置hiddenSheet隐藏
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wb.setSheetHidden(wb.getSheetIndex(hideSheet), true);
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}
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/**
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/**
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* 解析导出值 0=男,1=女,2=未知
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* 解析导出值 0=男,1=女,2=未知
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*
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*
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