为什么我找不到这个 xpath 按钮？

Question

我尝试使用 selenium 通过 xpath 单击按钮，但它不起作用，我不知道为什么

它总是说：

selenium.common.exceptions.NoSuchElementException：消息：没有这样的元素：无法找到元素：{“method”：“xpath”，“selector”：“我在下面写的方式”}

元素显示如下：

<button class="dCJp8 afkep"><span aria-label="load comments" class="glyphsSpriteCircle_add__outline__24__grey_9 u-__7"></span></button>

#i already tried this ways: 
browser.find_element_by_xpath("//button[class='dCJp8 afkep']").click()
browser.find_element_by_xpath("//button[text()='load comments'").click()

#and i also tried it like this:
browser.find_element_by_xpath("/html/body/div[1]/section/main/div/div[1]/article/div[3]/div[1]/ul/li/div/button").click()
browser.find_element_by_xpath("/html/body/div[5]/div[2]/div/article/div[3]/div[1]/ul/li/div/button").click()
#but everything wont work

这里是代码，如果你们想自己尝试一下（第 13 和 14 行登录）

from selenium import webdriver
from time import sleep

browser = webdriver.Chrome()

url = "https://www.instagram.com/"
browser.get(url)

sleep(1)
browser.find_element_by_xpath("/html/body/div[2]/div/div/div/div[2]/button[1]").click()
#Login
browser.find_element_by_xpath("/html/body/div[1]/section/main/article/div[2]/div[1]/div/form/div/div[1]/div/label/input").send_keys("Username")
browser.find_element_by_xpath("/html/body/div[1]/section/main/article/div[2]/div[1]/div/form/div/div[2]/div/label/input").send_keys("Password")
browser.find_element_by_xpath("/html/body/div[1]/section/main/article/div[2]/div[1]/div/form/div/div[3]/button").click()
sleep(3)

browser.find_element_by_xpath("/html/body/div[1]/section/main/div/div/div/div/button").click()
browser.find_element_by_xpath("/html/body/div[4]/div/div/div/div[3]/button[2]").click()
url = "https://www.instagram.com/p/CLMCNSenf-E/"
browser.get(url)

#try:
 #   browser.find_element_by_xpath("/html/body/div[1]/section/main/div/div[1]/article/div[3]/div[1]/ul/li/div/button").click()
#except:
 #   browser.find_element_by_xpath("/html/body/div[1]/section/main/div/div[1]/article/div[3]/div[1]/ul/li/div/button").click()

browser.find_element_by_xpath("//button[text()='load comments'").click()

Answer 1

您的xpath 似乎有误。属性名应该以@开头

试试下面xpath

//button[@class='dCJp8 afkep']

代码：

browser.find_element_by_xpath("//button[@class='dCJp8 afkep']").click()

Answer 2

//button[./span[@aria-label='load comments']]

您也可以将其用作 xpath。

Answer 3

也许在你的方法中尝试一个异常

public static void clickCatchingStaleException(WebElement element) {

    try {
        element.click();
    } catch (Exception e) {
                    element.click();
    }
}

或者可能点击操作

public static void clickWithActions(WebDriver wd, WebElement element) {
    Actions actions = new Actions(wd);
    actions.moveToElement(element).click().perform();
}