Question

我需要点击动态加载的页面的特定元素。滚动页面时生成的Web元素。类似于jabong网页。

我尝试在jabong网页上这样做，这是我的代码

    WebDriver driver = new FirefoxDriver();
    driver.manage().window().maximize();
    driver.navigate().to("http://www.jabong.com/men/clothing/"
            + "?source=topnav");


    driver.manage().timeouts().implicitlyWait(10, TimeUnit.SECONDS);
    System.out.println("Close the modal popup");
    driver.findElement(By.id("jab-vchr-cls")).click();
    driver.manage().timeouts().implicitlyWait(0, TimeUnit.SECONDS);

      /**
       * while(true) loop is required to search the 
       * element until element found.We put find
       * element within try-catch and if it get 
       * exception it scroll the page and again 
       * try to find the element.
       */
    while(true) {

            ((JavascriptExecutor)driver).executeScript("window.scrollBy(0,100)", "");
        try {
            WebElement element = driver.findElement(By.xpath("//*[@id='http:    //static3.jassets.com/p/The-Indian-Garage-Co.-Checks-Red-Casual-Shirt-2889-679124-1-catalog.jpg']/img"));
            Wait<WebDriver> wait_element=new WebDriverWait(driver, 10);
            wait_element.until(ExpectedConditions.elementToBeClickable(element));
            element.click();
            System.out.println("!!!!!!!!!!!!!!At Last Get Success!!!!!!!!!!!!!!!!");
            break;

        }
        catch (Exception ex) {
            Logger.getLogger(Test.class.getName()).log(Level.SEVERE, null, ex);
            System.out.println(ex.getMessage());
        }
        }

} }

我的问题是

1.有没有更好的方法来做这件事？

2.如何让这个脚本更快？

Answer 1

你可以这样做，如果你想避免while（true）虽然我不认为这个循环有任何问题。

    boolean reachedbottom = Boolean.parseBoolean(js.executeScript("return $(document).height() == ($(window).height() + $(window).scrollTop());").toString());

    while (!reachedbottom) {
        ((JavascriptExecutor) driver).executeScript("window.scrollBy(0,600)", "");
        try {
            reachedbottom=Boolean.parseBoolean(js.executeScript("return $(document).height() == ($(window).height() + $(window).scrollTop());").toString());
            WebElement element = driver.findElement(By.xpath("//*[@id='http://static3.jassets.com/p/The-Indian-Garage-Co.-Checks-Red-Casual-Shirt-2889-679124-1-catalog.jpg']/img"));
            Wait<WebDriver> wait_element = new WebDriverWait(driver, 5);
            wait_element.until(ExpectedConditions.elementToBeClickable(element));
            element.click();
            System.out.println("!!!!!!!!!!!!!!At Last Get Success!!!!!!!!!!!!!!!!");
            break;
        } catch (Exception ex) {
            Logger.getLogger(Test.class.getName()).log(Level.SEVERE, null, ex);
            System.out.println(ex.getMessage());
        }
    }

Answer 2

在Getting Started with Selenium框架中，AutomationTest#waitForElement方法是处理事情的好方法。它是webdriver等待的替代品，但工作原理完全相同。

/**
 * Private method that acts as an arbiter of implicit timeouts of sorts.. sort of like a Wait For Ajax method.
 */
private WebElement waitForElement(By by) {
    int attempts = 0;
    int size = driver.findElements(by).size();

    while (size == 0) {
        size = driver.findElements(by).size();
        if (attempts == MAX_ATTEMPTS) fail(String.format("Could not find %s after %d seconds",
                                                         by.toString(),
                                                         MAX_ATTEMPTS));
        attempts++;
        try {
            Thread.sleep(1000); // sleep for 1 second.
        } catch (Exception x) {
            fail("Failed due to an exception during Thread.sleep!");
            x.printStackTrace();
        }
    }

    if (size > 1) System.err.println("WARN: There are more than 1 " + by.toString() + " 's!");

    return driver.findElement(by);
}

你可以把它从无限循环中取出来。如果页面在10秒内没有加载某些东西，那么我会说这是一个需要纠正的应用程序问题。将其从无限循环中取出，并使用上面指定的waitForElement之类的内容，或者只使用WebDriverWait类。

此外，您不必滚动到元素。我还没有找到做这样事情的理由。只要该元素在DOM上，它就应该能够被操作。

使用Selenium WebDriver java单击动态加载页面的元素

2 个答案: