尝试将webtable导出为ex​​cel时出现无效的选择器错误

Question

错误提示： 给定的选择器表[class ='stats_table data_grid'] tbody tr [0] td [0]无效或不会导致WebElement 。出现以下错误： InvalidSelectorError：无效或非法选择指定

观察： 我已经检查了cssSelector没有[ “+ R +”]和[ “+ C +”]，它是有效的。 所以这个错误来自添加[“+ r +”]和[“+ c +”]，我无法缓解它。我的总体目标是从mlb.com/stats的webtable中获取数据，并将其输入Excel表格中。几乎99％的代码工作正常， 除了无效的cssSelector问题。

我的代码是：

package automate; 

import java.io.FileOutputStream; 
import java.io.IOException; 
import java.util.List; 
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.openqa.selenium.By; 
import org.openqa.selenium.WebDriver; 
import org.openqa.selenium.WebElement; 
import org.openqa.selenium.firefox.FirefoxDriver; 

public class MLBtoXL { 


    static WebDriver driver = new FirefoxDriver(); 

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

     // Navigate to mlb.com/stats 
     driver.navigate().to("http://goo.gl/El1PIV"); 

     WebElement table = driver.findElement(By.cssSelector 
       ("table[class='stats_table data_grid']")); 

     List<WebElement> irow = table.findElements(By.tagName("tr")); 
     int iRowCount = irow.size(); 

     List<WebElement> icol = table.findElements(By.tagName("td")); 
     int iColCount = icol.size(); 

     FileOutputStream fos = new FileOutputStream 
       ("/Users/HARSHENDU/Desktop/MLBtoXL.xlsx"); 

     XSSFWorkbook wb = new XSSFWorkbook(); 
     XSSFSheet ws = wb.createSheet("Team Stats"); 

     for(int r=0; r<=iRowCount; r++) { 
      XSSFRow excelrow = ws.createRow(r); 
      for(int c=0; c<iColCount; c++) { 


// Invalid selector exception coming up for the following cssSelector. 
       WebElement cellval = driver.findElement 
(By.cssSelector("table[class='stats_table data_grid'] tbody tr ["+r+"] td ["+c+"]")); 
       String cellcontent = cellval.getText(); 
       XSSFCell excelcell = excelrow.createCell(c); 
       excelcell.setCellType(XSSFCell.CELL_TYPE_STRING); 
       excelcell.setCellValue(cellcontent); 
      } 
      System.out.println(""); 
     } 

    fos.flush(); 
    wb.write(fos); 
    fos.close(); 

     end(); 

    } 

    public static void end() { 
     driver.close(); 
     driver.quit(); 
    } 

} 

Answer 1

我相信使用XPath能够解决您的问题：

WebElement cellval = driver.findElement(By.XPath("//table[@class='stats_table data_grid']/tbody/tr["+r+"]/td["+c+"]")); 

Answer 2

您需要添加index属性。尝试

WebElement cellval = driver.findElement(By.cssSelector("table[class='stats_table data_grid'] tbody tr[index="+r+"] td[index="+c+"]");