selenium.common.exceptions.WebDriverException:消息:尝试使用Selenium和Python单击元素时，无法将数据转换为对象 [英] selenium.common.exceptions.WebDriverException: Message: Failed to convert data to an object while trying to click an element with Selenium and Python

问题描述

在登录按钮后尝试在页面上单击按钮的是以下HTML

im trying to click a button on a page after logging in the button is the following HTML

<div id="carrierDashboardControls">
      <button class="yms-button-primary" ng-click="refresh()">
         <t>Refresh</t>
      </button>
      <button class="yms-button-primary-alt ng-isolate-scope" ng-csv="fetchData()" lazy-load="true" 
  csv-header="getCsvHeader" filename="carrier-dashboard.csv" field-separator=",">CSV
      </button>
</div>

在此有2个按钮，我想单击一个与班级有关的按钮"yms-button-primary-alt ng-isolate-scope"但是我得到以下错误

there are 2 buttons in this and i want to click the one with class "yms-button-primary-alt ng-isolate-scope" however i get the follwing error

单击此按钮将下载CSV文件，但现在我收到错误消息"selenium.common.exceptions.WebDriverException:消息:无法将数据转换为对象"

this button will download a CSV file when clicked but right now i get the error "selenium.common.exceptions.WebDriverException: Message: Failed to convert data to an object"

当前正在使用以下代码，请注意，由于业务性质，实际的网址无法共享(由于登录后发生重定向，我两次导航到该网址)

im currently using the below code, note the actual url's cannot be shared due to the nature of the business (i navigate to the url twice due to a redirection after login)

from selenium import webdriver
from selenium.webdriver.common.keys import Keys
from bs4 import BeautifulSoup
import re
import pandas as pd
import os


url = "THE URL"
username = 'USERNAME'
password = 'PASSWORD'

driver = webdriver.Firefox(executable_path=r'MYPATH/geckodriver.exe')
driver.implicitly_wait(100)
driver.get(url)

user_field = driver.find_element_by_id("ap_email")
pass_field = driver.find_element_by_id("ap_password")
sign_in = driver.find_element_by_id("signInSubmit")
user_field.send_keys(username)
pass_field.send_keys(password)
sign_in.click()
driver.implicitly_wait(100)
driver.get(url)
CSV_BUTTON = driver.find_element_by_class_name("yms-button-primary-alt ng-isolate-scope")
CSV_BUTTON.click()

作为补充，我想处理此后下载的文件，因为如果可能的话，我希望使用当前日期和时间自动重命名该文件?

as an added note i would like to manipulate the file that is downloaded afterwards as i would like to have it auto renamed with current date and time if this is possible ?

下面的完整堆栈

Traceback (most recent call last):
  File "C:/Users/USER/PycharmProjects/YMS scrape/venv/YMS Sel#.py", line 26, in <module>
    CSV_BUTTON = driver.find_element_by_class_name("yms-button-primary-alt ng-isolate-scope")
  File "C:\Users\USER\Anaconda3\envs\YMS scrape\lib\site-packages\selenium\webdriver\remote\webdriver.py", line 564, in find_element_by_class_name
    return self.find_element(by=By.CLASS_NAME, value=name)
  File "C:\Users\USER\Anaconda3\envs\YMS scrape\lib\site-packages\selenium\webdriver\remote\webdriver.py", line 978, in find_element
    'value': value})['value']
  File "C:\Users\USER\Anaconda3\envs\YMS scrape\lib\site-packages\selenium\webdriver\remote\webdriver.py", line 321, in execute
    self.error_handler.check_response(response)
  File "C:\Users\USER\Anaconda3\envs\YMS scrape\lib\site-packages\selenium\webdriver\remote\errorhandler.py", line 242, in check_response
    raise exception_class(message, screen, stacktrace)
selenium.common.exceptions.WebDriverException: Message: Failed to convert data to an object

推荐答案

所需元素是动态元素，可通过延迟加载，因此要对元素进行 click()，就必须诱导 WebDriverWait 为 element_to_be_clickable()，您可以使用以下任一

The desired element is an dynamic element which becomes visible through lazy-loading, so to click() on the element you have to induce WebDriverWait for the element_to_be_clickable() and you can use either of the following Locator Strategies:

• 使用 CSS_SELECTOR :

WebDriverWait(driver, 20).until(EC.element_to_be_clickable((By.CSS_SELECTOR, "button.yms-button-primary-alt.ng-isolate-scope[csv-header='getCsvHeader'][ng-csv^='fetchData']"))).click()

使用 XPATH :

WebDriverWait(driver, 20).until(EC.element_to_be_clickable((By.XPATH, "//button[@class='yms-button-primary-alt ng-isolate-scope' and @csv-header='getCsvHeader'][contains(., 'CSV')]"))).click()

注意:您必须添加以下导入:

Note : You have to add the following imports :

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

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