Selenium Webdriver：如何使用 xpath 过滤器？

Question

在此处使用 HTML 表的情况下，我正在尝试遵循 Selenium Webdrive 基本教程

http://www.toolsqa.com/selenium-webdriver/handling-tables-selenium-webdriver/

该页面中 "Practice Exercise 1" 的代码不起作用：问题似乎与此处的 xpath 过滤器有关

String sCellValue = driver.findElement(By.xpath(".//*[@id='post-1715']/div/div/div/table/tbody/tr[1]/td[2]")).getText();

这里

driver.findElement(By.xpath(".//*[@id='post-1715']/div/div/div/table/tbody/tr[1]/td[6]/a")).click();

示例代码中使用的页面是这个

http://www.toolsqa.com/automation-practice-table/

我尝试使用 Firebug 更改直接从页面提取 xpath 的代码，我的新代码如下

package practiceTestCases;

import java.util.concurrent.TimeUnit;

import org.openqa.selenium.By;

import org.openqa.selenium.WebDriver;

import org.openqa.selenium.firefox.FirefoxDriver;

public class PracticeTables_00 {

private static WebDriver driver = null;

public static void main(String[] args) {

        driver = new FirefoxDriver();

        driver.manage().timeouts().implicitlyWait(10, TimeUnit.SECONDS);

        driver.get("http://www.toolsqa.com/automation-practice-table");

        //Here we are storing the value from the cell in to the string variable

        String sCellValue = driver.findElement(By.xpath("/html/body/div[1]/div[3]/div[2]/div/div/table/tbody/tr[1]/td[2]")).getText();

        System.out.println(sCellValue);

        // Here we are clicking on the link of first row and the last column

        driver.findElement(By.xpath("/html/body/div[1]/div[3]/div[2]/div/div/table/tbody/tr[1]/td[6]/a")).click();        

        System.out.println("Link has been clicked otherwise an exception would have thrown");

        driver.close();

}

}

尝试执行还是报错

Exception in thread "main" org.openqa.selenium.NoSuchElementException: Unable to locate element: {"method":"xpath","selector":"/html/body/div[1]/div[3]/div[2]/div/div/table/tbody/tr[1]/td[2]"}

我在 Windows 7

上使用 Eclipse Luna

有什么建议吗？提前谢谢你...

切萨雷

Answer 1

你的xpath是错误的。如我所见，您尝试从第二个 row/first 列获取内容（如果您不计算 headers）。在 http://www.toolsqa.com/automation-practice-table/ 页面上尝试以下代码：

/html/body/div[2]/div[3]/div[2]/div/div/table/tbody/tr[2]/td[1]

或

//*[@id='content']/table/tbody/tr[2]/td[1]

如果您运行 getText() 它将 return 以下值： Saudi Arabia

Answer 2

正如他们在练习测试场景中给出的那样，xpath 已更改。 xpath 中的 ID 或 className 可能会更改。所以根据更新的 HTML 代码更改 xpath。

这里我已经改变了一切：

 import java.util.concurrent.TimeUnit;

 import org.openqa.selenium.By;
 import org.openqa.selenium.WebDriver;
 import org.openqa.selenium.firefox.FirefoxDriver;

public class PracticeTables_00 {

private static WebDriver driver = null;

public static void main(String[] args) {

    driver = new FirefoxDriver();

    driver.manage().timeouts().implicitlyWait(10, TimeUnit.SECONDS);

    driver.get("http://www.toolsqa.com/automation-practice-table");

    // Here we are storing the value from the cell in to the string variable

    String sCellValue = driver
            .findElement(
                    By.xpath(".//*[@id='content']/table/tbody/tr[1]/td[2]"))
            .getText();

    System.out.println(sCellValue);

    // Here we are clicking on the link of first row and the last column

    driver.findElement(
            By.xpath(".//*[@id='content']/table/tbody/tr[1]/td[6]/a"))
            .click();

    System.out
            .println("Link has been clicked otherwise an exception would have thrown");

    driver.close();

    }

   }

Selenium Webdriver：如何使用 xpath 过滤器？

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