Question

网页（请参阅下面的driver.get()）似乎有一个表名为table的表。我似乎无法使用下面的代码找到它。

我的印象是我可以使用Selenium找到这些类型的Javascript元素。

import time

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

driver.quit()
driver = webdriver.PhantomJS()

driver.get('http://investsnips.com/list-of-publicly-traded-micro-cap-diversified-biotechnology-and-pharmaceutical-companies/')


content = driver.find_element_by_css_selector('table.table')
x = driver.find_element_by_class_name("table")

我收到此错误（内容或x工作）

NoSuchElementException: Message: {"errorMessage":"Unable to find element with class name 'table'","request":{"headers":{"Accept":"application/json","Accept-Encoding":"identity","Connection":"close","Content-Length":"94","Content-Type":"application/json;charset=UTF-8","Host":"127.0.0.1:49464","User-Agent":"Python http auth"},"httpVersion":"1.1","method":"POST","post":"{\"using\": \"class name\", \"value\": \"table\", \"sessionId\": \"a988f310-65da-11e7-a655-01f6986e9e41\"}","url":"/element","urlParsed":{"anchor":"","query":"","file":"element","directory":"/","path":"/element","relative":"/element","port":"","host":"","password":"","user":"","userInfo":"","authority":"","protocol":"","source":"/element","queryKey":{},"chunks":["element"]},"urlOriginal":"/session/a988f310-65da-11e7-a655-01f6986e9e41/element"}}
Screenshot: available via screen

Answer 1

iframe中的表格。您必须在找到表格之前切换iframe。请参阅下面的代码。

driver = webdriver.PhantomJS()

driver.get('http://investsnips.com/list-of-publicly-traded-micro-cap-diversified-biotechnology-and-pharmaceutical-companies/')

#Find the iframe tradingview_xxxxx and then switch into the iframe
iframeElement = driver.find_element_by_css_selector('iframe[id*="tradingview_"]')
driver.switch_to_frame(iframeElement)
#Wait for the table
waitForPresence = WebDriverWait(driver, 10)
waitForPresence.until(EC.presence_of_element_located((By.CSS_SELECTOR,'table.table'))
theTable = driver.find_element_by_css_selector('table.table')

如何解决find_element_by_class_name（）抛出“无法找到具有类名的元素'...'”？

1 个答案: