Selenium 异常 NoSuchElementException：无法定位元素：{"method":"xpath","selector":

Question

当运行将此代码从 find_element_by_xpath 更改为 find_element 时（By.XPATH 我现在遇到无法定位元素的错误。

        search_btn = self.driver.find_element(By.XPATH, "//*[@id='viewContainer']/app-listing-container/app-search-container/app-search-form-container/form/div[3]/button[2]")
        time.sleep(4)
        search_btn.click()
        time.sleep(5)
'''
DevTools listening on ws://127.0.0.1:63724/devtools/browser/c4f952a3-afd0-4074-8aaf-452394b3300d
[22840:23968:0212/182455.570:ERROR:chrome_browser_main_extra_parts_metrics.cc(227)] START: ReportBluetoothAvailability(). If you don't see the END: message, this is crbug.com/1216328.
[22840:23968:0212/182455.570:ERROR:chrome_browser_main_extra_parts_metrics.cc(230)] END: ReportBluetoothAvailability()
[22840:23968:0212/182455.571:ERROR:chrome_browser_main_extra_parts_metrics.cc(235)] START: GetDefaultBrowser(). If you don't see the END: message, this is crbug.com/1216328.
[22840:19460:0212/182455.579:ERROR:device_event_log_impl.cc(214)] [18:24:55.579] USB: usb_device_handle_win.cc:1049 Failed to read descriptor from node connection: A device attached to the system is not functioning. (0x1F)
[22840:19460:0212/182455.587:ERROR:device_event_log_impl.cc(214)] [18:24:55.587] USB: usb_device_handle_win.cc:1049 Failed to read descriptor from node connection: A device attached to the system is not functioning. (0x1F)
[22840:23968:0212/182455.590:ERROR:chrome_browser_main_extra_parts_metrics.cc(239)] END: GetDefaultBrowser()
Traceback (most recent call last):
  File "C:\!!!Angela\Paid screen scraper\data scraping\data scraping\my_ui_scrapy12.py", line 277, in show_page
    search_btn = self.driver.find_element(
  File "C:\Users\vwalt_000\AppData\Local\Programs\Python\Python310\lib\site-packages\selenium\webdriver\remote\webdriver.py", line 1244, in find_element
    return self.execute(Command.FIND_ELEMENT, {
  File "C:\Users\vwalt_000\AppData\Local\Programs\Python\Python310\lib\site-packages\selenium\webdriver\remote\webdriver.py", line 424, in execute
    self.error_handler.check_response(response)
  File "C:\Users\vwalt_000\AppData\Local\Programs\Python\Python310\lib\site-packages\selenium\webdriver\remote\errorhandler.py", line 247, in check_response
    raise exception_class(message, screen, stacktrace)
selenium.common.exceptions.NoSuchElementException: Message: no such element: Unable to locate element: {"method":"xpath","selector":"//*[@id='viewContainer']/app-listing-container/app-search-container/app-search-form-container/form/div[3]/button[2]"}
  (Session info: chrome=98.0.4758.82)

Answer 1

异常信息很清楚：

NoSuchElementException

您是否尝试过您的 XPATH - 如果它给出了正确的元素？

现在看起来像：

//*[@id='viewContainer']/app-listing-container/app-search-container/app-search-form-container/form/div[3]/button[2]

更好的描述是哪个元素有这样的id，比如：

//button[@id='id-name']

并尽量省略

div[3]/button[2]

如果要添加更多元素（如更多按钮），您的 XPATH 将失败。

另外，可能是这个元素还没有加载。您可以添加 explicit wait.

更新：

用于处理来自页面的 Xpath 定位器，您可以使用 Firefox 浏览器的扩展程序：

您也可以使用浏览器的控制台。

Selenium 异常 NoSuchElementException：无法定位元素：{"method":"xpath","selector":

Selenium Exception NoSuchElementException: Unable to locate element: {"method":"xpath","selector":

selenium

python-3.x

selenium-webdriver