使用XPATH或CSS Selector在Selenium中查找元素
[英]Find element in Selenium using XPATH or CSS Selector
问题描述
I m trying to find the element "import" using Selenium Webdriver in C#. 
我试图在C＃中使用Selenium Webdriver找到元素“import”。 Have tried the following codes but nothing find it. 尝试过以下代码但没有找到它。
driver.FindElement(By.XPath("//*[@class='menu_bg']/ul/li[3]")).Click();
driver.FindElement(By.XPath("//*[@id='import']/a")).Click();
driver.FindElement(By.CssSelector("#import>a")).Click();
driver.FindElement(By.XPath("//*[@class='menu_bg']/ul/li[3]/a")).Click();
driver.FindElement(By.CssSelector("ul[@class='menu_bg']>li[value='3']")).Click();
Please help me out. 请帮帮我。 Design page looks like below: 设计页面如下所示：
<body>
<div class="header_bg"></div>
<div class="menu_bg">
<ul class="menu">
<li id="retrieve"></li>
<li id="scan" class="test"></li>
<li id="import">
<a target="main" href="import/import.aspx" onclick="clickme(this,'import')">Import</a>
</li>
<li id="admin"></li>
<li id="help"></li>
<li style="float: right;"></li>
</ul>
</div>
</body>
All the time I got the error as below: 我一直得到如下错误：
unable to find the element
3 个解决方案
解决方案1
2 2014-06-09 13:54:49
XPath indexers are 1-based, as opposed to most other languages whereby they are 0-based. XPath索引器是基于1的，而不是大多数其他语言，它们是从0开始的。
This means you are actually targetting the 2nd li element, which has no anchor element. 这意味着您实际上是在定位第二个 li元素，它没有anchor元素。
So: 所以：
//*[@class='menu_bg']/ul/li[3]/a
However, this XPath query is not great and is too strict on position - thus although this newly fixed XPath above should work, I'd advise you to think of something else. 但是，这个XPath查询不是很好，并且位置太严格 - 因此虽然上面这个新修复的XPath 应该可以工作，但我建议你想一些其他的东西。
解决方案2
1 2014-06-10 09:53:00
解决方案3
0 2015-12-03 15:01:35
You can do this by chaining Selenium 'FindElement' like so; 你可以通过链接Selenium的'FindElement'来做到这一点;
driver.FindElement(By.Id("import")).FindElement(By.TagName("a")); which will give you the child of the element with ID that has a tag of 'a'. 这将为您提供具有标记为“a”的ID的元素的子元素。
Another way you could do this is by casting your Driver to an IJavascriptExecutor and executing javascript directly in the browser using a JQuery selector. 另一种方法是将Driver转换为IJavascriptExecutor并使用JQuery选择器直接在浏览器中执行javascript。 I find this better for more complex Selenium lookups; 我发现这对于更复杂的Selenium查找更好;
((IJavascriptExecutor)Driver).ExecuteScript("$("a[target='main'][href='import/import.aspx'])").click();
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