如文档中所述，Apache POI MissingCellPolicy确实无法正常工作

Question

I'm trying to set up the Apache POI for a Data Driven automation framework in Java. However, I'm kind of stuck, after several searches at the setCellData method.

When I try to check if a Cell in blank, the getCell throws this error:

The method getCell(int, Row.MissingCellPolicy) in the type XSSFRow is
not applicable for the arguments (int, Class<Row>)

And Row.RETURN_BLANK_AS_NULL is not really accepted:

RETURN_BLANK_AS_NULL cannot be resolved or is not a field

Here's my code:

import java.io.FileInputStream;
import java.io.FileOutputStream;
import org.apache.poi.xssf.usermodel.XSSFCell;
import org.apache.poi.xssf.usermodel.XSSFRow;
import org.apache.poi.xssf.usermodel.XSSFSheet;
import org.apache.poi.xssf.usermodel.XSSFWorkbook;

public class ExcelUtils {

    private static XSSFSheet ExcelWSheet;
    private static XSSFWorkbook ExcelWBook;
    private static XSSFCell Cell;
    private static XSSFRow Row;

    public static void setCellData(String Result, int RowNum, int ColNum) throws Exception {

        try {
            Row = ExcelWSheet.getRow(RowNum);
            Cell = Row.getCell(ColNum, Row.RETURN_BLANK_AS_NULL);
            if (Cell == null) {
                Cell = Row.createCell(ColNum);
                Cell.setCellValue(Result);
            } else {
                Cell.setCellValue(Result);
            }

It does continue afterwards, but I'm interested in the 'try' part.

Thanks a lot, Cristian

Answer 1

Your variable Row is a XSSFRow which does not contain the enum field RETURN_BLANK_AS_NULL .

You need to import org.apache.poi.ss.usermodel.Row and then use Row.RETURN_BLANK_AS_NULL .

I suggest you to rename your variable Row to avoid any conflict.

Answer 2

Add an import

import org.apache.poi.ss.usermodel.Row.MissingCellPolicy;

create a variable

private static MissingCellPolicy xRow;

and apply as below

Cell = Row.getCell(ColNum, xRow.RETURN_BLANK_AS_NULL);

This worked for me.

Answer 3

and if you are still find the issue with the missing policy as unexpected type, required class or package, found variable

Then use this line : org.apache.poi.ss.usermodel.Row.MissingCellPolicy.RETURN_BLANK_AS_NULL