CODEWITHSUNDEEP
javaexcelspring-mvcapache-poixssf
Aman
Aman

Reputation: 13

Facing an issue while opening .xlsx using MS-Excel in which APACHE POI XSSFDataValidationHelper is used for numeric and date validation

I used Apache POI 3.17, XSSFDataValidationHelper in java to add validation for data like dates and numeric values in .xlsx file, but whenever I am opening the file using MS-Excel it shows

“We found a problem with some content in . Do you want us to try recovering the file as much as we can? If you trust the source of this workbook, then click Yes”

When i checked for this error, I got, this happens when the file is partially corrupted or completely corrupted.

This problem only appear on those .xlsx files where i used any sort of data validation like I mentioned above but also this problem won't happen if I open that .xlsx file in linux environment.

P.S : I am closing workbook and FileOutputStream at the end, have created atleast one sheet under the workbook (obviously)

PFB the code snippet for data validation :-

`XSSFDataValidationHelper dataValidationHelper = new XSSFDataValidationHelper(sheet);

        XSSFDataValidationConstraint numberValidationConstraint =
                (XSSFDataValidationConstraint)
                        dataValidationHelper.createNumericConstraint(
                                XSSFDataValidationConstraint.ValidationType.DECIMAL,
                                XSSFDataValidationConstraint.OperatorType.BETWEEN,
                                String.valueOf(Double.MIN_VALUE),
                                String.valueOf(Double.MAX_VALUE)
                        );

        CellRangeAddressList addressList = new CellRangeAddressList(
                2, 2000, columnCounter, columnCounter);
        XSSFDataValidation numberValidation =(XSSFDataValidation)dataValidationHelper.createValidation(
                numberValidationConstraint, addressList);
        numberValidation.setSuppressDropDownArrow(false);
        numberValidation.setShowErrorBox(true);
        numberValidation.createErrorBox("Invalid data","Only numbers are allowed");
        sheet.addValidationData(numberValidation);`

Upvotes: 0

Views: 720

Answers (1)

Axel Richter
Axel Richter

Reputation: 61880

You cannot use Double.MIN_VALUE and Double.MAX_VALUE in Excel data validation. Excel has more strict restrictions for numeric cell values. You cannot store 1.7976931348623157E308 in a Excel cell, nor you can store 4.9E-324. In Excel cells only 15 significant digits can be stored. So the smallest number you can store is -9.99999999999999E307 and the biggest number you can store is 9.99999999999999E307. So you would must use that numbers to limit the range of possible numbers.

DataValidationConstraint numberValidationConstraint = dataValidationHelper.createNumericConstraint(
 DataValidationConstraint.ValidationType.DECIMAL,
 DataValidationConstraint.OperatorType.BETWEEN,
 //String.valueOf(Double.MIN_VALUE),
 //String.valueOf(Double.MAX_VALUE)
 "-9.99999999999999E307",
 "9.99999999999999E307"
);

But I suspect the goal is allowing only numeric values. This also can be achieved using a custom formula constraint having the formula

=ISNUMBER(OFFSET($A$1,ROW()-1,COLUMN()-1))

Complete example:

import java.io.FileOutputStream;

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

class CreateExcelDataValidation {

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

  //Workbook workbook = new HSSFWorkbook();
  Workbook workbook = new XSSFWorkbook();

  Sheet sheet = workbook.createSheet();

  int columnCounter = 0;
  int fromRow = 2;
  int toRow = 2000;

  DataValidationHelper dataValidationHelper = sheet.getDataValidationHelper();

/*
  DataValidationConstraint numberValidationConstraint = dataValidationHelper.createNumericConstraint(
   DataValidationConstraint.ValidationType.DECIMAL,
   DataValidationConstraint.OperatorType.BETWEEN,
   //String.valueOf(Double.MIN_VALUE),
   //String.valueOf(Double.MAX_VALUE)
   "-9.99999999999999E307",
   "9.99999999999999E307"
  );
*/

  DataValidationConstraint numberValidationConstraint = dataValidationHelper.createCustomConstraint(
   "ISNUMBER(OFFSET($A$1,ROW()-1,COLUMN()-1))"
  );

  CellRangeAddressList addressList = new CellRangeAddressList(fromRow, toRow, columnCounter, columnCounter);
  DataValidation numberValidation = dataValidationHelper.createValidation(numberValidationConstraint, addressList);
  numberValidation.setShowErrorBox(true);
  numberValidation.createErrorBox("Invalid data","Only numbers are allowed");
  sheet.addValidationData(numberValidation);

  FileOutputStream out = null;
  if (workbook instanceof HSSFWorkbook) {
   out = new FileOutputStream("CreateExcelDataValidation.xls");
  } else if (workbook instanceof XSSFWorkbook) {
   out = new FileOutputStream("CreateExcelDataValidation.xlsx");
  }
  workbook.write(out);
  workbook.close();
  out.close();

 }
}

Upvotes: 1

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