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

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英文:

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

问题

我使用了 Apache POI 3.17,在 Java 中使用 XSSFDataValidationHelper 来为 .xlsx 文件中的日期和数值等数据添加验证。但每当我使用 MS-Excel 打开文件时,它显示:

“我们发现了<Excel_filename>中的一些内容问题。您是否希望我们尽量恢复文件?如果您信任此工作簿的来源,请点击“是”。

当我查找此错误时,我得知,当文件部分损坏或完全损坏时,就会发生此问题。

这个问题只会出现在那些使用了上述任何类型数据验证的 .xlsx 文件中,但如果我在 Linux 环境中打开该 .xlsx 文件,则不会出现此问题。

附注:我在最后关闭了工作簿和FileOutputStream,至少在工作簿下创建了一个工作表(显然)

以下是用于数据验证的代码片段:

    `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);`
英文:

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 <Excel_filename>. 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(&quot;Invalid data&quot;,&quot;Only numbers are allowed&quot;);
		sheet.addValidationData(numberValidation);`

答案1

得分: 1

以下是翻译好的内容:

无法在Excel数据验证中使用Double.MIN_VALUEDouble.MAX_VALUE。Excel对数字单元格值有更严格的限制。您无法在Excel单元格中存储1.7976931348623157E308,也无法存储4.9E-324。在Excel单元格中只能存储15个有效数字。因此,您可以存储的最小数字是-9.99999999999999E307,最大数字是9.99999999999999E307。因此,您必须使用这些数字来限制可能数字的范围。

DataValidationConstraint numberValidationConstraint = dataValidationHelper.createNumericConstraint(
 DataValidationConstraint.ValidationType.DECIMAL,
 DataValidationConstraint.OperatorType.BETWEEN,
 "-9.99999999999999E307",
 "9.99999999999999E307"
);

但我怀疑目标是只允许数字值。这也可以通过使用自定义公式约束来实现,公式如下:

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

完整示例:

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();

 }
}
英文:

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)
&quot;-9.99999999999999E307&quot;,
&quot;9.99999999999999E307&quot;
);

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)
&quot;-9.99999999999999E307&quot;,
&quot;9.99999999999999E307&quot;
);
*/
DataValidationConstraint numberValidationConstraint = dataValidationHelper.createCustomConstraint(
&quot;ISNUMBER(OFFSET($A$1,ROW()-1,COLUMN()-1))&quot;
);
CellRangeAddressList addressList = new CellRangeAddressList(fromRow, toRow, columnCounter, columnCounter);
DataValidation numberValidation = dataValidationHelper.createValidation(numberValidationConstraint, addressList);
numberValidation.setShowErrorBox(true);
numberValidation.createErrorBox(&quot;Invalid data&quot;,&quot;Only numbers are allowed&quot;);
sheet.addValidationData(numberValidation);
FileOutputStream out = null;
if (workbook instanceof HSSFWorkbook) {
out = new FileOutputStream(&quot;CreateExcelDataValidation.xls&quot;);
} else if (workbook instanceof XSSFWorkbook) {
out = new FileOutputStream(&quot;CreateExcelDataValidation.xlsx&quot;);
}
workbook.write(out);
workbook.close();
out.close();
}
}

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  • 本文由 发表于 2020年4月10日 19:04:26
  • 转载请务必保留本文链接:https://go.coder-hub.com/61138970.html
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