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python - Selenium Python Element.click 不工作

问题描述

我是 Selenium 的新手，我正在尝试模仿网站上的用户操作来下载 csv 文件。

当我手动执行时，“获取数据”按钮会生成链接“以 csv 格式下载文件”，但它不适用于自动化。

我收到一个异常，说找不到链接。

以下是我尝试过的事情：

** 这是我不明白的异常情况。我浏览了 html 文件以了解它是如何工作的，并且有 javascript 可以验证输入数据。所以我猜如果输入数据不正确，“get_data”将不起作用。

所以我尝试通过 sendkeys 输入符号“SBIN”后显示文本

打印（driver.find_element_by_id（“符号”）.text）

这打印为空。不确定这是否有问题。

非常感谢您的解决方案，因为它可以为我节省大量的手动工作来获取库存数据。

这是 KunduK youtube.com/watch?v=hBjjfPIeSCQ&feature=youtu.be 建议的更改的视频

这是网站。 https://www1.nseindia.com/products/content/equities/equities/eq_security.htm

这是 webdriver 的 python 脚本。

# -*- coding: utf-8 -*-
from selenium import webdriver
from selenium.webdriver.common.by import By
from selenium.webdriver.common.keys import Keys
from selenium.webdriver.support.ui import Select
from selenium.common.exceptions import NoSuchElementException
from selenium.common.exceptions import NoAlertPresentException
import unittest, time, re

class Test1(unittest.TestCase):
    def setUp(self):
        self.driver = webdriver.Firefox()
        self.driver.implicitly_wait(30)
        self.verificationErrors = []
        self.accept_next_alert = True

    def test_1(self):
        driver = self.driver
        driver.get("https://www1.nseindia.com/products/content/equities/equities/eq_security.htm")
        driver.find_element_by_id("dataType").click()
        driver.find_element_by_xpath("(.//*[normalize-space(text()) and normalize-space(.)='Get historical data for:'])[1]/following::option[3]").click()
        driver.find_element_by_id("symbol").click()
        driver.find_element_by_id("symbol").clear()
        driver.find_element_by_id("symbol").send_keys("SBIN")
        driver.find_element_by_id("series").click()
        Select(driver.find_element_by_id("series")).select_by_visible_text("EQ")
        driver.find_element_by_xpath("(.//*[normalize-space(text()) and normalize-space(.)='Select series :'])[1]/following::option[15]").click()
        Select(driver.find_element_by_id("dateRange")).select_by_visible_text("24 Months")
        driver.find_element_by_xpath("(.//*[normalize-space(text()) and normalize-space(.)='For past:'])[1]/following::option[8]").click()
        driver.find_element_by_id("get").click()
        driver.find_element_by_link_text("Download file in csv format").click()

    def is_element_present(self, how, what):
        try: self.driver.find_element(by=how, value=what)
        except NoSuchElementException as e: return False
        return True

    def is_alert_present(self):
        try: self.driver.switch_to_alert()
        except NoAlertPresentException as e: return False
        return True

    def close_alert_and_get_its_text(self):
        try:
            alert = self.driver.switch_to_alert()
            alert_text = alert.text
            if self.accept_next_alert:
                alert.accept()
            else:
                alert.dismiss()
            return alert_text
        finally: self.accept_next_alert = True

    def tearDown(self):
        self.driver.quit()
        self.assertEqual([], self.verificationErrors)

if __name__ == "__main__":
    unittest.main()

标签： pythonseleniumselenium-webdriver

解决方案

Induce WebDriverWait() 和element_to_be_clickable() 并遵循 xpath 以单击 csv 文件链接。

其次要从你必须使用的输入元素中获取值element.get_attribute('value')

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
from selenium.webdriver.support.select import Select

driver = webdriver.Chrome()
driver.get("https://www1.nseindia.com/products/content/equities/equities/eq_security.htm")
driver.find_element_by_id("dataType").click()
driver.find_element_by_xpath(
    "(.//*[normalize-space(text()) and normalize-space(.)='Get historical data for:'])[1]/following::option[3]").click()
driver.find_element_by_id("symbol").click()
driver.find_element_by_id("symbol").clear()
driver.find_element_by_id("symbol").send_keys("SBIN")
# To get the value from input text
print(WebDriverWait(driver, 5).until(EC.element_to_be_clickable((By.CSS_SELECTOR, 'input#symbol'))).get_attribute(
    'value'))
driver.find_element_by_id("series").click()
Select(driver.find_element_by_id("series")).select_by_visible_text("EQ")
driver.find_element_by_xpath(
    "(.//*[normalize-space(text()) and normalize-space(.)='Select series :'])[1]/following::option[15]").click()
Select(driver.find_element_by_id("dateRange")).select_by_visible_text("24 Months")
driver.find_element_by_xpath(
    "(.//*[normalize-space(text()) and normalize-space(.)='For past:'])[1]/following::option[8]").click()
# driver.find_element_by_id("get").click()    

WebDriverWait(driver, 10).until(EC.element_to_be_clickable((By.ID, "get"))).click()
WebDriverWait(driver, 10).until(EC.element_to_be_clickable((By.XPATH, "//a[text()='Download file in csv format']"))).click()

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