在Selenium中的空iframe但已填入浏览器（python） [英] Empty iframe in Selenium yet filled in browser (python)

问题描述

我正在尝试控制Spotify的浏览器播放器。所有控件都放在iframe部分中。

I'm trying to control Spotify's browser player. All of the controls are put inside iframe sections.

问题： Selenium WebDriver对象中的iframe是EMPTY。然而，iframe在ACTUAL浏览器中填充了正确的内容。

Problem: The iframes are EMPTY in the Selenium WebDriver object. Yet, the iframes are filled with the correct content in the ACTUAL browser.

代码示例：

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

import time

username = 'myusername'
base_url = 'https://play.spotify.com/user/spotifydiscover/playlist/76HML2OQXigkyKopqYkeng'

browser = None

def login():
    global browser
    password = input("Password: ")
    browser = webdriver.Firefox()
    browser.get(base_url)

    browser.find_element_by_id('has-account').click()

    browser.find_element_by_id('login-usr').clear()
    browser.find_element_by_id('login-usr').send_keys(username)

    browser.find_element_by_id('login-pass').clear()
    browser.find_element_by_id('login-pass').send_keys(password)
    browser.find_element_by_id('login-pass').submit()

def next_track():
    global browser
    wrapper = browser.find_element_by_id("section-collection")
    print(wrapper.get_attribute('innerHTML').encode('utf-8'))
    iframe = wrapper.find_element_by_tag_name('iframe')
    print(iframe.get_attribute('innerHTML').encode('utf-8'))
    sub = browser.switch_to_frame(iframe)
    sub.find_element_by_id('next').click()

def test():
    login()
    time.sleep(14) # Adjusted until page is 100% fully loaded
    next_track()
    time.sleep(40)

推荐答案

问题在于：

iframe = wrapper.find_element_by_tag_name('iframe')

页面上有多个 iframes ，您对此感兴趣 app-player id：

There are multiple iframes on the page and you are interested in the one with app-player id:

browser.switch_to_frame("app-player")
# now use browser.find_element_* to locate elements inside iframe

另请注意使用 time.sleep 会使您的自动化代码严重脆弱且通常比需要的速度慢 - 而是使用显式等待等待页面上满足的特定条件。

Also note that using time.sleep makes your automation code seriously fragile and usually slower than needed - instead use Explicit Waits to wait for the specific conditions to be met on a page.

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