我无法从使用python3.6.0+selenium 3.4.3的javascript函数生成的链接下载PDF文件

Question

URL是：site

通过将selenium与Firefox 47.0.2二进制文件和Python3.6.0一起使用，在这个页面上，我点击“Pesquisar”按钮，在下一页中，我用日期范围（格式为d/m/y）填写表单，然后再次单击新的“Pesquisar”按钮，我会得到一个PDF文档列表，然后我想下载它们。在

当我打印页面源代码时，我可以看到生成的链接，但我不明白为什么selenium无法定位这些链接。在

简化代码如下：

from selenium import webdriver
from selenium.webdriver.support.ui import Select
from selenium.webdriver.firefox.firefox_binary import FirefoxBinary
from selenium.webdriver.support.ui import WebDriverWait
from selenium.webdriver.support import expected_conditions as EC
from selenium.webdriver.common.by import By
from datetime import datetime, date, timedelta
from calendar import monthrange
import time


driver = webdriver.Firefox(firefox_profile=profile, firefox_binary=binary, capabilities=capabilities)
driver.maximize_window()
wait = WebDriverWait(driver, 10)

months = range(1, 13)
limits = monthrange(2017, 8)

#num_docs = limites[1]-limites[0]

date_input_begin = '{num:0{width}}'.format(num=limits[0], width=2) + '08' + '2017'
date_input_end = '{num:0{width}}'.format(num=limits[1], width=2) + '08' + '2017'

today = datetime.now().date()
date = today

date = date - timedelta(24)

driver.get("http://dje.trf2.jus.br/DJE/Paginas/Externas/inicial.aspx")

driver.find_element_by_id("ctl00_ContentPlaceHolder_ctrInicial_btnPesquisar").click()

wait.until(EC.presence_of_element_located(
    (By.XPATH, '//*[@id="ctl00_ContentPlaceHolder_ctrFiltraPesquisaDocumentos_btnFiltrar"]')))

select1 = Select(driver.find_element_by_id("ctl00_ContentPlaceHolder_ctrFiltraPesquisaDocumentos_ddlAreaJudicial"))
select1.select_by_index(3)

select2 = Select(driver.find_element_by_id("ctl00_ContentPlaceHolder_ctrFiltraPesquisaDocumentos_ddlRegistrosPaginas"))
select2.select_by_index(6)

element_date_begin = driver.find_element_by_id(
    'ctl00_ContentPlaceHolder_ctrFiltraPesquisaDocumentos_tbxDataInicial')
element_date_begin.clear()
element_date_begin.send_keys(date_input_begin)

element_date_end = driver.find_element_by_id(
    'ctl00_ContentPlaceHolder_ctrFiltraPesquisaDocumentos_tbxDataFinal')
element_date_end.clear()
element_date_end.send_keys(date_input_end)

driver.find_element_by_id('ctl00_ContentPlaceHolder_ctrFiltraPesquisaDocumentos_btnFiltrar').submit()

wait.until(EC.presence_of_element_located((By.ID, 'ctl00_ContentPlaceHolder_ctrFiltraPesquisaDocumentos_btnFiltrar')))
wait.until(EC.element_to_be_clickable((By.ID, 'ctl00_ContentPlaceHolder_ctrFiltraPesquisaDocumentos_btnFiltrar')))

time.sleep(5)
driver.find_element_by_id('ctl00_ContentPlaceHolder_ctrFiltraPesquisaDocumentos_btnFiltrar').click()

wait.until(EC.presence_of_element_located(
    (By.XPATH, '//*[@id="ctl00_ContentPlaceHolder_ctrListaDiarios_udtVisualizaAdmRj_lblNomeCaderno"]')))

driver.find_element_by_xpath(
    '//*[@id="ctl00_ContentPlaceHolder_ctrListaDiarios_udtVisualizaAdmRj_grvCadernos_ct102_lnkData"]').click()

但是，当我通过ID或XPATH查找链接时，我得到以下错误：

File "C:\Users\b2002032064079\Anaconda3\lib\site-packages\selenium\webdriver\remote\errorhandler.py", line 194, in check_response raise exception_class(message, screen, stacktrace) selenium.common.exceptions.NoSuchElementException: Message: Unable to locate element: {"method":"xpath","selector":"//*[@id=\"ctl00_ContentPlaceHolder_ctrListaDiarios_udtVisualizaAdmRj_grvCadernos_ct102_lnkData\"]"}

我是刮胡子的新手，我会非常感谢你的帮助！谢谢您！在

Answer 1

首先：你在用哪种浏览器？ 2： 你的网站很慢。也许试着多等一会儿。 3： xpath正确吗？我认为问题出在XPATH上 尝试在chrome上使用XPath助手进行检查。在