我想使用WebElement.findElement()API使用XPATH在父节点内定位一个节点//span[@class='child- class']。我以为这会让我回到<div>父母那边。但是,它将返回我在整个DOM树中找到的第一个。我使用了错误的XPATH吗?
WebElement.findElement()
//span[@class='child- class']
<div>
我也曾尝试使用.//span[@class='child-class']XPATH,但这确实会返回任何东西。
.//span[@class='child-class']
谢谢。
更新:
给定下面的HTML,我想为子标题<span>和子日期定义一个定位器,<span>并使用WebElement.findElement()API对其进行定位,而不管父级是“ // a / li [1]”还是“ // a” / li [2]“
<span>
<a> <li> parent 1 <div> <span class="child-title child-style">title 1</span> <span class="child-date child-style"> date 1</span> <span class="child-author">author 1</span> </div> </li> </a> <a> <li> parent 2 <div> <span class="child-title child-style">title 2</span> <span class="child-date child-style"> date 2</span> <span class="child-author">author 3</span> </div> </li> </a> <a> <li> parent 3 <div> <span class="child-title child-style">title 3</span> <span class="child-date child-style"> date 3</span> <span class="child-author">author 3</span> </div> </li> </a>
我有一个WebElement parent2初始化,并使用位于"//a/li[2]",
WebElement parent2
"//a/li[2]"
WebElement child = parent2.findElement(By.xpath("//span[@class='child- author']")); 会给我“作者1”
WebElement child = parent2.findElement(By.xpath("//span[@class='child- author']"));
WebElement child = parent2.findElement(By.xpath("span[@class='child- author']")); 会给我 NoSuchElementException
WebElement child = parent2.findElement(By.xpath("span[@class='child- author']"));
NoSuchElementException
我的示例代码有2条评论
1-使用您发布的HTML,找不到xpath // a / li [2](我们只有3个元素带有// a / li [1])
2-假设我们有正确的代码,则需要了解Xpath中单斜杠和双斜杠之间的区别
a/b (single slash): select element that has "tag b" and "stands right after" an element that has "a tag"
例如:
<a> <b> <d> <c> </c> </d> </b> </a>
和
a//b (double slash): select element that has "tag b" and is n-level-child an element that has "a tag"
<a> <c> <d> <b> </b> </d> </c> </a>
所以,用你的代码
<a> <li> parent 1 <div> <span class="child-title child-style">title 1</span> <span class="child-date child-style"> date 1</span> <span class="child-author">author 1</span> </div> </li> </a>
如果要获取日期信息,应使用
WebElement parent = driver.findElement(By.xpath("//a/li")); WebElement date = parent.findElement(By.xpath("div/span[contains(@class, 'child-date')]")); WebElement date = parent.findElement(By.xpath("//span[contains(@class, 'child-date')]"));
代码
WebElement date = parent.findElement(By.xpath("span[contains(@class, 'child-date')]"));
将带出NoSuchElementException,因为[li]标签之后没有[span]标签
希望帮助