Css Selector for the Log Out button

问题:

I have a LogOut button in a page. I am trying to automate it in Selenium.Following is the source code for that element.

<a class="_2k0gmP" data-reactid="53" href="#">Log Out</a>

This is the code that i am using

driver.findElement(By.cssSelector("._2k0gmP[text='Log Out']"));

But i am repeatedly getting No Such Elemet found exception and sometimes Invalid Selector Exception. Could somebody please help me with this ?

回答1:

You are getting InvalidSelectorException because you can't use cssSelector to find element based on it's inner HTML text. For that you could use xpath or linkText selectors.

xpath: driver.findElement(By.xpath(".//a[text()='Log Out']");

linkText: driver.findElement(By.linkText("Log Out"));

NoSuchElement exception was probably thrown because you left out _ in class selector as @gecki said so your selector was searching for class which doesn't exist.

回答2:

Do not leave out the underscore:

driver.findElement(By.cssSelector("._2k0gmP[text='Log Out']"));

However, in this case I would prefer

driver.findElement(By.linkText("Log Out"));

回答3:

xpath:

driver.findElement(By.xpath("//a[text()='Log Out']");