通过xpath Selenium java选择动态生成的ID的Web元素 [英] Selecting WebElements with dynamically generated ids by xpath Selenium java
问题描述
我需要在下拉窗口中选择一个元素。每当我打开我正在测试的网站的下拉窗口时，网站会随机为该下拉窗口生成一个ID。下拉窗口的先前实例是可见的（使用Firebug）但不可选。有一个静态路径，但只有在我使用ChromeDriver测试它时才有效，而不是在我使用FirefoxDriver时。通过类名定位动态生成的元素（下拉窗口的每个实例具有相同的类）在我第一次尝试时起作用，但每次使用ChromeDriver和FirefoxDriver后我都会收到错误。我认为它可能试图找到第一个实例，但不是可选择的实例。
I need to select an element in a dropdown window. Every time I open the dropdown window in the site I am testing, the website randomly generates an id for that dropdown window. Previous instances of the dropdown window are visible (using Firebug) but not selectable. There is a static path but it only works when I test it with ChromeDriver, and not when I use FirefoxDriver. Locating the dynamically generated elements by class name (each instance of the dropdown window has the same class) works the first time I try it but I get errors every time after that using both ChromeDriver and FirefoxDriver. I think it may be attempting to locate that first instance, but not the selectable instance.
这是我的动态代码：
driver.findElement(By.xpath("//div[@class='really long name for drop down menu']/ul/li[2]")).click();
这是我的静态代码：
driver.findElement(By.xpath("//option[normalize-space(.)='Text']")).click();
这里是动态HTML：
<html class="FakeName1" style="">
<body style="margin: 0px; background-color: rgb(219, 230, 244);">
<form id="Form1" action="MenuSelector.aspx?Ihopethisstuffisnotimportant" method="post">
<div id="Menu1384921" class="really long name for drop down menu" style="overflow-y: auto; width: 438px; height: 320px; position: absolute; visibility: hidden; left: 165px; top: 88px; display: none;">
<div id="Menu1092875" class="really long name for drop down menu" style="overflow-y: auto; width: 438px; height: 320px; position: absolute; visibility: visible; left: 165px; top: 88px;">
<ul>
<li unselectable="on"></li>
<li unselectable="on">Text</li>
</ul>
</div>
</body>
</html>
这里是静态HTML：
<div id="ThingList" style="width:100%;">
<table id="Table1" style="margin: 0px; padding: 0px; width: 100%; border-spacing: 4px;">
<tbody>
<tr>
<td align="right" style="width: 20%; font-size: 9pt;">Select a Thing: </td>
<td>
<select id="bThings" class="bInput" style="width: 436px;" onchange="javascript:setTimeout('__doPostBack(\'bThings\',\'\')', 0)" name="bThings">
<option value=""></option>
<option value="2">Text</option>
</select>
</td>
</tr>
</tbody>
</table>
</div>
推荐答案
尝试这种方法：
获取所有元素。
java.util.List<WebElement> elements = driver.findElements(By.xpath("//div[@class='really long name for drop down menu']/ul/li[2]"));
elements[elements.count - 1].click();
这应该点击该特定类的最后一个元素。
That should click the last element with that particular class.
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