如何让Selenium按钮点击工作

Question

我是一个完全的初学者，我有一个网站，我想通过python selenium点击一个按钮，我尝试了很多东西，但我无法让它发挥作用。

import time
from selenium import webdriver
from selenium.webdriver.support.ui import WebDriverWait
from selenium.webdriver.common.by import By
from selenium.webdriver.support import expected_conditions as EC

chromedriver_location = executable_path=r"C:UsersHPDesktopchromedriver_win32chromedriver.exe"
driver = webdriver.Chrome(chromedriver_location)
driver.get('https://maskun.org/donate/')
donate_button = WebDriverWait(driver, 20).until(EC.element_to_be_clickable((By.XPATH, "//button[contains(@class, 'give-btn advance-btn')] and text()='Donate Now']")))
donate_button.click()

现在，我得到错误：

Traceback (most recent call last):
File "d:pythonprojectsmaskun.py", line 13, in <module>
donate_button = WebDriverWait(driver, 20).until(EC.element_to_be_clickable((By.XPATH, "//button[contains(@class, 'give-btn advance-btn')] and text()='Donate Now']")))
File "C:PythonPython310libsite-packagesseleniumwebdriversupportwait.py", line 81, in until
value = method(self._driver)
File "C:PythonPython310libsite-packagesseleniumwebdriversupportexpected_conditions.py", line 312, in _predicate
target = driver.find_element(*target)  # grab element at locator
File "C:PythonPython310libsite-packagesseleniumwebdriverremotewebdriver.py", line 856, in find_element
return self.execute(Command.FIND_ELEMENT, {
File "C:PythonPython310libsite-packagesseleniumwebdriverremotewebdriver.py", line 429, in execute
self.error_handler.check_response(response)
File "C:PythonPython310libsite-packagesseleniumwebdriverremoteerrorhandler.py", line 243, in check_response
raise exception_class(message, screen, stacktrace)
selenium.common.exceptions.InvalidSelectorException: Message: invalid selector: Unable to locate an element with the xpath expression //button[contains(@class, 'give-btn advance-btn')] and text()='Donate Now'] because of the following error:
SyntaxError: Failed to execute 'evaluate' on 'Document': The string '//button[contains(@class, 'give-btn advance-btn')] and text()='Donate Now']' is not a valid XPath expression.      
(Session info: chrome=106.0.5249.119)
Stacktrace:
Backtrace:
Ordinal0 [0x00B51ED3+2236115]
Ordinal0 [0x00AE92F1+1807089]
Ordinal0 [0x009F66FD+812797]
Ordinal0 [0x009F92B4+823988]
Ordinal0 [0x009F9165+823653]
Ordinal0 [0x009F9400+824320]
Ordinal0 [0x00A25352+1004370]
Ordinal0 [0x00A257CB+1005515]
Ordinal0 [0x00A57632+1209906]
Ordinal0 [0x00A41AD4+1120980]
Ordinal0 [0x00A559E2+1202658]
Ordinal0 [0x00A418A6+1120422]
Ordinal0 [0x00A1A73D+960317]
Ordinal0 [0x00A1B71F+964383]
GetHandleVerifier [0x00DFE7E2+2743074]
GetHandleVerifier [0x00DF08D4+2685972]
GetHandleVerifier [0x00BE2BAA+532202]
GetHandleVerifier [0x00BE1990+527568]
Ordinal0 [0x00AF080C+1837068]
Ordinal0 [0x00AF4CD8+1854680]
Ordinal0 [0x00AF4DC5+1854917]
Ordinal0 [0x00AFED64+1895780]
BaseThreadInitThunk [0x76046739+25]
RtlGetFullPathName_UEx [0x77858FD2+1218]
RtlGetFullPathName_UEx [0x77858F9D+1165]

如果我检查铬上的按钮，我会得到：

<button class="give-btn advance-btn" tabindex="1">Donate Now<i class="fas fa-chevron-right"></i></button>

XPath是：

//*[@id="give-form-746-1"]/div[1]/button

Answer 1

您需要先切换到帧，而不是find_elemnt

driver.get('https://maskun.org/donate/')
iframe = driver.find_element(By.XPATH, "//iframe[@name='give-embed-form']")
driver.switch_to.frame(iframe)
donate_button = driver.find_element(By.XPATH, "//button[contains(text(), 'Donate Now')]")

Answer 2

XPath表达式中存在语法错误
此外，您需要向下滚动页面并切换到iframe块，因为该按钮位于iframe内
以下代码适用于

import time
from selenium import webdriver
from selenium.webdriver.chrome.service import Service
from selenium.webdriver.chrome.options import Options
from selenium.webdriver.support.ui import WebDriverWait
from selenium.webdriver.common.by import By
from selenium.webdriver.support import expected_conditions as EC
options = Options()
options.add_argument("start-maximized")
webdriver_service = Service('C:webdriverschromedriver.exe')
driver = webdriver.Chrome(service=webdriver_service, options=options)
url = 'https://maskun.org/donate/'
driver.get(url)
wait = WebDriverWait(driver, 20)
driver.execute_script("window.scrollBy(0, arguments[0]);", 600)
time.sleep(1)
wait.until(EC.frame_to_be_available_and_switch_to_it((By.CSS_SELECTOR, "iframe[name='give-embed-form']")))
wait.until(EC.presence_of_element_located((By.XPATH, "//button[contains(@class, 'give-btn advance-btn') and text()='Donate Now']"))).click()

当你用在iframe内部完成工作时，不要忘记从它切换

driver.switch_to.default_content()