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excel - Apache POI Excel：同一列中的多个数据验证

问题描述

我正在使用 Poi 3.16 版。我正在用 Groovy 编写代码。我尝试在同一列中添加 2 个不同的数据验证。第一个被接受，但第二个失败。有人有想法做对吗？到目前为止非常感谢。

// Something like that
FileOutputStream fileOut = new FileOutputStream("pois-test.xls");
def workbook = new XSSFWorkbook();
def sheet = workbook.createSheet("Sheet1");

 // Create 2 Dropdownlists
addMyValidation(1, 10, 3, 3, new String[]{"One", "Two", "Three"});
addMyValidation(15, 25, 3, 3, new String[]{"A", "B", "C"});   // second one failed without errormessage

Boolean addMyValidation(int firstRow, int lastRow, int firstCol, int lastCol, String[] listOfValue)
{
        def helper     = new XSSFDataValidationHelper(sheet);
        def constraint = helper.createExplicitListConstraint(listOfValue);
        CellRangeAddressList range = new CellRangeAddressList(firstRow, lastRow, firstCol, lastCol);
        def validation = helper.createValidation(constraint, range);

        validation.setErrorStyle(ErrorStyle.STOP);
        validation.setSuppressDropDownArrow(true);
        validation.setEmptyCellAllowed(false);
        validation.setShowPromptBox(true);
        validation.setShowErrorBox(true);

        sheet.addValidationData(validation);

        return (true);
}

标签： excelapachevalidationapache-poi

解决方案

为我使用Java和apache poi. 不过，也应该使用您的Groovy代码。

可能您不完全确定第 15 行实际上在哪里，因为行 ID 和列 ID 都是基于 0 的？

以下完整代码有效：

import java.io.FileOutputStream;

import org.apache.poi.ss.usermodel.*;
import org.apache.poi.xssf.usermodel.XSSFWorkbook;
import org.apache.poi.ss.util.CellRangeAddressList;

public class CreateExcelDataValidation {

 static Sheet sheet = null;

 static boolean addMyValidation(int firstRow, int lastRow, int firstCol, int lastCol, String[] listOfValue) {
  DataValidationHelper helper = sheet.getDataValidationHelper();
  DataValidationConstraint constraint = helper.createExplicitListConstraint(listOfValue);
  CellRangeAddressList range = new CellRangeAddressList(firstRow, lastRow, firstCol, lastCol);
  DataValidation validation = helper.createValidation(constraint, range);

  validation.setErrorStyle(DataValidation.ErrorStyle.STOP);
  validation.setSuppressDropDownArrow(true);
  validation.setEmptyCellAllowed(false);
  validation.setShowPromptBox(true);
  validation.setShowErrorBox(true);

  sheet.addValidationData(validation);

  return true;
 }        

 public static void main(String[] args) throws Exception {

  Workbook workbook = new XSSFWorkbook();
  sheet = workbook.createSheet("Data Validation");

  sheet.createRow(0).createCell(3).setCellValue("Col 3");
  sheet.createRow(1).createCell(0).setCellValue("Row 1");
  sheet.createRow(10).createCell(0).setCellValue("Row 10");
  sheet.createRow(15).createCell(0).setCellValue("Row 15");
  sheet.createRow(25).createCell(0).setCellValue("Row 25");

  addMyValidation(1, 10, 3, 3, new String[]{"One", "Two", "Three"});
  addMyValidation(15, 25, 3, 3, new String[]{"A", "B", "C"});

  FileOutputStream out = new FileOutputStream("CreateExcelDataValidation.xlsx");
  workbook.write(out);
  workbook.close();
  out.close();

 }

}

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