无法从数字单元格“Poi”获取文本值

Question

我正在尝试使用 Excel 中的电子表格中的数据，但总是出现此错误，已经尝试将工作表格式化为文本和数字，但错误仍然存在。

我看到有人使用它解决了 cell.setCellType ( Cell.CELL_TYPE_STRING ) ; 但我不知道我的代码中该段落的位置。

WebElement searchbox = driver.findElement(By.name("j_username"));
WebElement searchbox2 = driver.findElement(By.name("j_password"));         

try {
    FileInputStream file = new FileInputStream(new File("C:\paulo.xls")); 
    HSSFWorkbook workbook = new HSSFWorkbook(file);
    HSSFSheet sheet = workbook.getSheetAt(0);

    for (int i=1; i <= sheet.getLastRowNum(); i++){
        String j_username = sheet.getRow(i).getCell(0).getStringCellValue();
        String j_password = sheet.getRow(i).getCell(0).getStringCellValue();

        searchbox.sendKeys(j_username);
        searchbox2.sendKeys(j_password);
        searchbox.submit();  

        driver.manage().timeouts().implicitlyWait(10000, TimeUnit.MILLISECONDS);
    }

    workbook.close();
    file.close();
} catch (FileNotFoundException fnfe) {
    fnfe.printStackTrace();
} catch (IOException ioe) {
    ioe.printStackTrace();

Answer 1

~~Cell cell = sheet.getRow(i).getCell(0); cell.setCellType ( Cell.CELL_TYPE_STRING ); String j_username = cell.getStringCellValue();~~

更新

好的，正如评论中所说，尽管它有效，但它不是从 Excel 的单元格中检索数据的正确方法。

根据手册here:

If what you want to do is get a String value for your numeric cell, stop!. This is not the way to do it. Instead, for fetching the string value of a numeric or boolean or date cell, use DataFormatter instead.

并根据 DataFormatter API

DataFormatter contains methods for formatting the value stored in an Cell. This can be useful for reports and GUI presentations when you need to display data exactly as it appears in Excel. Supported formats include currency, SSN, percentages, decimals, dates, phone numbers, zip codes, etc.

因此，显示数字单元格值的正确方法如下：

 DataFormatter formatter = new DataFormatter(); //creating formatter using the default locale
 Cell cell = sheet.getRow(i).getCell(0);
 String j_username = formatter.formatCellValue(cell); //Returns the formatted value of a cell as a String regardless of the cell type.

Answer 2

如 Apache POI Javadocs 中所述，您不应使用 cell.setCellType(Cell.CELL_TYPE_STRING) 获取数字单元格的字符串值，因为您会失去所有格式

相反，作为 javadocs explain, you should use DataFormatter

DataFormatter 所做的是获取表示存储在文件中的单元格的浮点值，以及应用于它的格式规则，然后 return 为您提供一个看起来像单元格在其中的字符串Excel.

因此，如果您正在查找单元格的字符串，并且看起来与您在 Excel 中看到的差不多，只需执行以下操作：

 // Create a formatter, do this once
 DataFormatter formatter = new DataFormatter(Locale.US);

 .....

 for (int i=1; i <= sheet.getLastRowNum(); i++) {
        Row r = sheet.getRow(i);
        if (r == null) { 
           // empty row, skip
        } else {
           String j_username = formatter.formatCellValue(row.getCell(0));
           String j_password =  formatter.formatCellValue(row.getCell(1));

           // Use these
        }
 }

格式化程序将 return 按原样对单元格进行字符串处理，对于数字单元格，会将样式上的格式设置规则应用于单元格的编号

Answer 3

使用该代码肯定有效，我修改了它。

import java.io.FileInputStream;
import java.io.IOException;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import org.apache.poi.poifs.filesystem.POIFSFileSystem;
//import org.apache.poi.ss.usermodel.Row;
import org.apache.poi.ss.usermodel.*;

public class TestApp {

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

        try {

            Class forName = Class.forName("com.mysql.jdbc.Driver");
            Connection con = null;
            con = DriverManager.getConnection("jdbc:mysql://localhost/tables", "root", "root");
            con.setAutoCommit(false);
            PreparedStatement pstm = null;
            FileInputStream input = new FileInputStream("C:\Users\Desktop\a1.xls");
            POIFSFileSystem fs = new POIFSFileSystem(input);
            Workbook workbook;
            workbook = WorkbookFactory.create(fs);
            Sheet sheet = workbook.getSheetAt(0);
            Row row;
            for (int i = 1; i <= sheet.getLastRowNum(); i++) {
                row = (Row) sheet.getRow(i);
                String name = row.getCell(0).getStringCellValue();
                String add = row.getCell(1).getStringCellValue();

                int  contact = (int) row.getCell(2).getNumericCellValue();

                String email = row.getCell(3).getStringCellValue();

                String sql = "INSERT INTO employee (name, address, contactNo, email) VALUES('" + name + "','" + add + "'," + contact + ",'" + email + "')";
                pstm = (PreparedStatement) con.prepareStatement(sql);
                pstm.execute();
                System.out.println("Import rows " + i);
            }
            con.commit();
            pstm.close();
            con.close();
            input.close();
            System.out.println("Success import excel to mysql table");
        } catch (IOException e) {
        }
    }

}

Answer 4

这会起作用：

WebElement searchbox = driver.findElement(By.name("j_username"));
WebElement searchbox2 = driver.findElement(By.name("j_password"));         


try {

      FileInputStream file = new FileInputStream(new File("C:\paulo.xls")); 
      HSSFWorkbook workbook = new HSSFWorkbook(file);

      HSSFSheet sheet = workbook.getSheetAt(0);

    for (int i=1; i <= sheet.getLastRowNum(); i++){

            HSSFCell j_username = sheet.getRow(i).getCell(0)
            HSSFCell j_password = sheet.getRow(i).getCell(0)

            //Setting the Cell type as String
            j_username.setCellType(j_username.CELL_TYPE_STRING)
            j_password.setCellType(j_password.CELL_TYPE_STRING)

            searchbox.sendKeys(j_username.toString());
            searchbox2.sendKeys(j_password.toString());


            searchbox.submit();       

            driver.manage().timeouts().implicitlyWait(10000, TimeUnit.MILLISECONDS);

    }

      workbook.close();
      file.close();

     } catch (FileNotFoundException fnfe) {
      fnfe.printStackTrace();
     } catch (IOException ioe) {
      ioe.printStackTrace();
     }

Answer 5

使用 DataFormatter 此问题已解决。感谢 "Gagravarr" 最初的 post.

DataFormatter formatter = new DataFormatter();

String empno = formatter.formatCellValue(cell0);

Answer 6

Formatter 在这种情况下可以正常工作。

import org.apache.poi.ss.usermodel.DataFormatter;

FileInputStream fis = new FileInputStream(workbookName);
Workbook workbook = WorkbookFactory.create(fis);
Sheet sheet = workbook.getSheet(sheetName);
DataFormatter formatter = new DataFormatter();
String val = formatter.formatCellValue(sheet.getRow(row).getCell(col));
list.add(val);   //Adding value to list

Answer 7

CellType cell = row.getCell(j).getCellTypeEnum();

switch(cell) {
    case NUMERIC:
        intVal = row.getCell(j).getNumericCellValue();
        System.out.print(intVal);
        break;
    case STRING:
        stringVal = row.getCell(j).getStringCellValue();
        System.out.print(stringVal);
        break;
}

Answer 8

使用代码
cell.setCellType(Cell.CELL_TYPE_STRING);
在读取字符串值之前，这可以帮助你。
我使用的是POI version 3.17 Beta1版本，确保版本兼容性也..

Answer 9

这是解决错误的另一种方法："Cannot get a text value from a numeric cell “Poi”"

转到 Excel Sheet。拖动 Select 您要从 Excel sheet 导入数据的数值。转到格式 > 数字 > 然后 Select "Plain Text" 然后导出为 .xlsx。现在尝试运行脚本

希望一切顺利...！

Cannot get a text value from a numeric cell “Poi”.img

Answer 10

如果您使用 cellIterator 按行处理....那么这对我有用....

  DataFormatter formatter = new DataFormatter();   
  while(cellIterator.hasNext())
  {                         
        cell = cellIterator.next();
        String val = "";            
        switch(cell.getCellType()) 
        {
            case Cell.CELL_TYPE_NUMERIC:
                val = String.valueOf(formatter.formatCellValue(cell));
                break;
            case Cell.CELL_TYPE_STRING:
                val = formatter.formatCellValue(cell);
                break;
        }
    .....
    .....
  }

Answer 11

public class B3PassingExcelDataBase {


    @Test()
    //Import the data::row start at 3 and column at 1: 
    public static void imortingData () throws IOException {

        FileInputStream  file=new         FileInputStream("/Users/Downloads/Book2.xlsx");
        XSSFWorkbook book=new XSSFWorkbook(file);
        XSSFSheet sheet=book.getSheet("Sheet1");

        int rowNum=sheet.getLastRowNum();
        System.out.println(rowNum);

        //get the row and value and assigned to variable to use in application
        for (int r=3;r<rowNum;r++) {

            // Rows stays same but column num changes and this is for only one person. It iterate for other.
             XSSFRow currentRow=sheet.getRow(r);

             String fName=currentRow.getCell(1).toString();
             String lName=currentRow.getCell(2).toString();
             String phone=currentRow.getCell(3).toString();
             String email=currentRow.getCell(4).toString()

               //passing the data
                yogen.findElement(By.name("firstName")).sendKeys(fName);    ;
                yogen.findElement(By.name("lastName")).sendKeys(lName); ;
                yogen.findElement(By.name("phone")).sendKeys(phone);    ;

        }

        yogen.close();


    }

}

Answer 12

不同细胞类型的辅助方法：

private static String returnStringValue(Cell cell) {
    CellType cellType = cell.getCellType();

    switch (cellType) {
        case NUMERIC:
            double doubleVal = cell.getNumericCellValue();
            return String.valueOf(doubleVal);
        case STRING:
            return cell.getStringCellValue();
        case ERROR:
            return String.valueOf(cell.getErrorCellValue());
        case BLANK:
            return "";
        case FORMULA:
            return cell.getCellFormula();
        case BOOLEAN:
            return String.valueOf(cell.getBooleanCellValue());
    }
    return "error decoding string value of the cell";
}

无法从数字单元格“Poi”获取文本值

Cannot get a text value from a numeric cell “Poi”

java

apache-poi