Question

我试图找出一个页面上的项目数量是通信课程。所有项目都包含相同的类名称。它一直返回0大小，但是当我使用xpath helper验证它时，我使用的xpath给出正确的cont。这是我的硒代码：

 @Test(priority=2)
 public void AddItems() throws InterruptedException
 driver.findElement(By.linkText("CORRESPONDENCE COURSES")).click();
 List <WebElement> listele = driver.findElements(By.xpath("//*[@id='custom-
 block-grid']/div/ul/div[1]/li"));

 System.out.println(listele.size());

HTML是：

<div class="small-9 columns product-card left" role="main" id="card-width" style="padding-left: 10px; float: right !important">
  <article>
    <ul class="small-block-grid-2 cp-inline-block padding-card ng-scope" ng- repeat="data in testseriesData" style="">
      <li id="custom-block-grid" class="">
        <div class="panel card-background card-shadow">
          <ul class="no-bullet">
            <div class="image-card-container">
              <li class="card-pointer image-align-card" ui-sref="description({cName: 'books', id: data.id})" href="#/books/description/id=750">
                <img ng src="https://d2fldgtygklyv6.cloudfront.net/SSC_Corr_Course_with_test_HINDI_1500195234532.png" class="img-card-dim" src="https://d2fldgtygklyv6.cloudfront.net/SSC_Corr_Course_with_test_HINDI_1500195234532.png">
              </li>
            </div>
            <span class="line-clamp card-pointer label-card title-border-top ng-binding" ui-sref="description({cName: 'books', id: data.id})" href="#/books/description/id=750">SSC Correspondence Course (HINDI MEDIUM)</span>
            <div class="price-field">
              <del class="fade ng-binding"><i class="icon-rupee icon-rupee-buy-card" aria-hidden="true"></i>4,499</del>
              <span class="cp-float-right selling-price ng-binding"><i class="icon-rupee icon-rupee-buy-card" aria-hidden="true"></i>3,599</span>
            </div>
            <div class="add-to-cart listing-add-to-cart margin-force-zero sf-button-secondary" ng-click="addToCart(data)" role="button" tabindex="0">
              <span class="icon-cart icon-cart-buy-card"></span>
              <span>ADD TO CART</span>
            </div>
          </ul>
        </div>
      </li>
    </ul>
  </article>
</div>
<div class="small-9 columns product-card left" role="main" id="card-width" style="padding-left: 10px; float: right !important">
  <article>
    <ul class="small-block-grid-2 cp-inline-block padding-card ng-scope" ng- repeat="data in testseriesData" style="">
      <li id="custom-block-grid" class="">
        <div class="panel card-background card-shadow">
          <ul class="no-bullet">
            <div class="image-card-container">
              <li class="card-pointer image-align-card" ui-sref="description({cName: 'books', id: data.id})" href="#/books/description/id=750">
                <img ng src="https://d2fldgtygklyv6.cloudfront.net/SSC_Corr_Course_with_test_HINDI_1500195234532.png" class="img-card-dim" src="https://d2fldgtygklyv6.cloudfront.net/SSC_Corr_Course_with_test_HINDI_1500195234532.png">
              </li>
            </div>
            <span class="line-clamp card-pointer label-card title-border-top ng-binding" ui-sref="description({cName: 'books', id: data.id})" href="#/books/description/id=750">SSC Correspondence Course (HINDI MEDIUM)</span>
            <div class="price-field">
              <del class="fade ng-binding"><i class="icon-rupee icon-rupee-buy-card" aria-hidden="true"></i>4,499</del>
              <span class="cp-float-right selling-price ng-binding"><i class="icon-rupee icon-rupee-buy-card" aria-hidden="true"></i>3,599</span>
            </div>
            <div class="add-to-cart listing-add-to-cart margin-force-zero sf-button-secondary" ng-click="addToCart(data)" role="button" tabindex="0">
              <span class="icon-cart icon-cart-buy-card"></span>
              <span>ADD TO CART</span>
            </div>
          </ul>
        </div>
      </li>
    </ul>
  </article>
</div>
<div class="small-9 columns product-card left" role="main" id="card-width" style="padding-left: 10px; float: right !important">
  <article>
    <ul class="small-block-grid-2 cp-inline-block padding-card ng-scope" ng- repeat="data in testseriesData" style="">
      <li id="custom-block-grid" class="">
        <div class="panel card-background card-shadow">
          <ul class="no-bullet">
            <div class="image-card-container">
              <li class="card-pointer image-align-card" ui-sref="description({cName: 'books', id: data.id})" href="#/books/description/id=750"><img ng src="https://d2fldgtygklyv6.cloudfront.net/SSC_Corr_Course_with_test_HINDI_1500195234532.png" class="img-card-dim" src="https://d2fldgtygklyv6.cloudfront.net/SSC_Corr_Course_with_test_HINDI_1500195234532.png">
              </li>
            </div>
            <span class="line-clamp card-pointer label-card title-border-top ng-binding" ui-sref="description({cName: 'books', id: data.id})" href="#/books/description/id=750">SSC Correspondence Course (HINDI MEDIUM)</span>
            <div class="price-field">
              <del class="fade ng-binding"><i class="icon-rupee icon-rupee-buy-card" aria-hidden="true"></i>4,499</del>
              <span class="cp-float-right selling-price ng-binding"><i class="icon-rupee icon-rupee-buy-card" aria-hidden="true"></i>3,599</span>
            </div>
            <div class="add-to-cart listing-add-to-cart margin-force-zero sf-button-secondary" ng-click="addToCart(data)" role="button" tabindex="0">
              <span class="icon-cart icon-cart-buy-card"></span>
              <span>ADD TO CART</span>
            </div>
          </ul>
        </div>
      </li>
    </ul>
  </article>
</div>

同样适用于其他项目

Answer 1

如果它在浏览器中测试时有效，但在脚本运行时没有，那么很可能是时间问题。代码运行速度很快，可能在页面加载完成之前返回0。解决此问题的方法是添加等待WebDriverWait。

示例代码如下。等待返回等待的元素集合，因此您可以将其粘贴到List中，就像使用代码一样，然后打印集合的size()。我将变量的名称更改为更具描述性的courses，而不是listele。它将帮助您和其他人更轻松地阅读和理解您的代码。

By locator = By.cssSelector("article");
// By locator = By.xpath("//*[@id='custom-block-grid']/div/ul/div[1]/li");
List<WebElement> courses = new WebDriverWait(driver, 10).until(ExpectedConditions.visibilityOfAllElementsLocatedBy(locator));
System.out.println(courses.size());

另一件事......因为你只计算课程数量，所以用article标签表示，这样你就可以计算那些使你的定位器变得简单的东西。

我得到一个列表的大小是0但是当我使用x路径助手验证它时它显示正确的项目数

1 个答案: