线程“主”java.lang.IllegalStateException 中的异常：无法从数字单元格中获取文本值

Question

I have written code as below to fetch value from Excel.

String CID = s1.getRow(i).getCell(0).getStringCellValue();

but in excel, 1st cell is a numeric value, but in above code I am trying to fetch String cell value. thats why I am getting error as :

Exception in thread "main" java.lang.IllegalStateException: Cannot get a text value from a numeric cell

Can anyone please provide a solution for this. how to fetch the numeric value from excel?

Answer 1

getCellType() for any cell gives you the type of the cell.The types are:

Cell.CELL_TYPE_BLANK
Cell.CELL_TYPE_NUMERIC
Cell.CELL_TYPE_STRING
Cell.CELL_TYPE_FORMULA
Cell.CELL_TYPE_BOOLEAN
Cell.CELL_TYPE_ERROR

It is better to use a switch statement and collect the correct type of cell value. There exists getNumericCellValue() and getStringCellValue() functions but it is safer with types.

Answer 2

我不确定，但我认为存在getNumericalCellValue()或getIntegerCellValue()返回你想要的。

Answer 3

Add apostrophe as prefix to that number in cell, automatically it will be converted as text. it had worked for me

Answer 4

Check the cell type first and then get its value.

           row.getCell(index).getCellType();
Number ==> row.getCell(index).getNumericCellValue();
String ==> row.getCell(index).getStringCellValue();

Answer 5

你应该使用它=>

String CID = new BigDecimal(s1.getRow(i).getCell(0).getNumericCellValue()).toString();

Answer 6

String unitPrice = new Float(wb.getSheetAt(0).getRow(0).getCell(7).getNumericCellValue()).toString();

Note: its the best way to get the data in string if the value is stored in the numerical type in excel file. where we are getting the data from 7th cell of 1st row.

Answer 7

final DataFormatter df = new DataFormatter();
final XSSFCell cell = row.getCell(cellIndex);
String valueAsString = df.formatCellValue(cell);

This might help

Answer 8

Below solution worked for me

package dummy;

import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Collections;
import java.util.Iterator;
import java.util.List;

import org.apache.poi.ss.usermodel.Cell;
import org.apache.poi.ss.usermodel.CellStyle;
import org.apache.poi.ss.usermodel.CellType;
import org.apache.poi.ss.usermodel.DataFormatter;
import org.apache.poi.ss.usermodel.DateUtil;
import org.apache.poi.ss.usermodel.FillPatternType;
import org.apache.poi.ss.usermodel.Font;
import org.apache.poi.ss.usermodel.FormulaEvaluator;
import org.apache.poi.ss.usermodel.IndexedColors;
import org.apache.poi.ss.usermodel.Row;
import org.apache.poi.ss.usermodel.Sheet;
import org.apache.poi.ss.usermodel.Workbook;
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;
import org.testng.Assert;

public class read_excel {

    public static void main(String[] args) throws Exception {
        String filename = "abP.xlsx";

        try (FileInputStream fis = new FileInputStream(filename)) {
            XSSFWorkbook workbook = new XSSFWorkbook(fis);
            //XSSFWorkbook workbook = new XSSFWorkbook(fis);
            XSSFSheet sheet = workbook.getSheetAt(0);

            Iterator rows = sheet.rowIterator();
            while (rows.hasNext()) {
                XSSFRow row = (XSSFRow) rows.next();
                Iterator cells = row.cellIterator();
                while (cells.hasNext()) {
                    XSSFCell cell = (XSSFCell) cells.next();

                    CellType type = cell.getCellTypeEnum();
                    if (type == CellType.STRING) {
                        System.out.println("[" + cell.getRowIndex() + ", "
                            + cell.getColumnIndex() + "] = STRING; Value = "
                            + cell.getRichStringCellValue().toString());
                    } else if (type == CellType.NUMERIC) {
                        System.out.println("[" + cell.getRowIndex() + ", "
                                     + cell.getColumnIndex() + "] = NUMERIC; Value = "
                                      + cell.getRawValue());
                        
                      //  System.out.println("[" + cell.getRowIndex() + ", "
                      //      + cell.getColumnIndex() + "] = NUMERIC; Value = "
                       //     + cell.getNumericCellValue());
                    } else if (type == CellType.BOOLEAN) {
                        System.out.println("[" + cell.getRowIndex() + ", "
                            + cell.getColumnIndex() + "] = BOOLEAN; Value = "
                            + cell.getBooleanCellValue());
                    } else if (type == CellType.BLANK) {
                        System.out.println("[" + cell.getRowIndex() + ", "
                            + cell.getColumnIndex() + "] = BLANK CELL");
                    }
                    else if (type == CellType.FORMULA) {
                        System.out.println("[" + cell.getRowIndex() + ", "
                            + cell.getColumnIndex() + "] = BLANK CELL");
                    }
                }
            }
        } catch (FileNotFoundException e) {
            e.printStackTrace();
        }
    }
}

Answer 9

Please add an apostrophe before number in Excel cell. That solved my similar problem when using Revit API. Eg:

'123