使用Apache POI的Excel下拉列表

Question

我需要使用Apache POI在excel文件中创建一个下拉列表。我能够做到这一点，但我不能使下拉列表中的第一个项目作为默认项目。

public class sd {

/**
 * @param args
 * @throws IOException 
 */
public static void main(String[] args) throws IOException {

DataValidation dataValidation = null;
DataValidationConstraint constraint = null;
DataValidationHelper validationHelper = null;

 XSSFWorkbook wb = new XSSFWorkbook();
 XSSFSheet sheet1=(XSSFSheet) wb.createSheet("sheet1");


    validationHelper=new XSSFDataValidationHelper(sheet1);
    CellRangeAddressList addressList = new  CellRangeAddressList(0,5,0,0);
    constraint =validationHelper.createExplicitListConstraint(new String[]{"SELECT","10", "20", "30"});
    dataValidation = validationHelper.createValidation(constraint, addressList);
    dataValidation.setSuppressDropDownArrow(true);      
    sheet1.addValidationData(dataValidation);

    FileOutputStream fileOut = new FileOutputStream("c:\\temp\\vineet.xlsx");
    wb.write(fileOut);
    fileOut.close();
}

}

Answer 1

要设置默认值，只需setCellValue（“first_item_value”）；

sheet.getRow(1).getCell(index).setCellValue("my_default_value");

我做这件事是因为面对同样的问题。