
    def modis_get(self):
        n = 0
        with open('data.txt', 'r') as f:
            for line in f.readlines():
                if n == 0:
                    self.driver.get(line)
                    pyautogui.typewrite(self.username, 0.1)
                    pyautogui.press('tab')
                    pyautogui.typewrite(self.password, 0.1)
                    pyautogui.press('tab')
                    time.sleep(0.5)
                    pyautogui.press('enter')
                    n += 1
                    print(f'开始下载第{n}个数据')
                else:
                    self.driver.get(line)
                    n += 1
                    print(f'开始下载第{n}个数据')

2、下载路径管理，浏览器默认的下载路径是C:\Users\86182\Downloads，如果数据量大最好更改路径下载便于管理。


    def path_change(self, path=r'C:\Users\86182\Downloads'):
 
        chrome_options = webdriver.ChromeOptions()
        prefs = {'profile.default_content_settings.popups': 0,  # 防止保存弹窗
                 'download.default_directory': path,  # 设置默认下载路径
                 "profile.default_content_setting_values.automatic_downloads": 1  # 允许多文件下载
                 }
        chrome_options.add_experimental_option('prefs', prefs)
        self.driver = webdriver.Chrome(options=chrome_options)

3、关于浏览器下载路径的设置，一定要先执行设置方法，再执行下载方法。


    def main_get(self):
        self.path_change(self.new_path)
        self.modis_get()

完整代码：


'''****************selenium模拟登录并实现通过浏览器下载数据**********************
    作者：荷兰豆养殖专家
    ps：该方法纯属歪门邪道
'''
 
from selenium import webdriver
import pyautogui
import time
 
 
class Selenium_modis_get(object):
    def __init__(self, new_path=None, username=None, pd=None, target_path=None):
        self.new_path = new_path
        self.username = username
        self.password = pd
        self.target_path = target_path
 
    def modis_get(self):
        n = 0
        with open(self.target_path, 'r') as f:
            for line in f.readlines():
                if n == 0:
                    self.driver.get(line)
                    pyautogui.typewrite(self.username, 0.1)
                    pyautogui.press('tab')
                    pyautogui.typewrite(self.password, 0.1)
                    pyautogui.press('tab')
                    time.sleep(0.5)
                    pyautogui.press('enter')
                    n += 1
                    print(f'开始下载第{n}个数据')
                else:
                    self.driver.get(line)
                    n += 1
                    print(f'开始下载第{n}个数据')
 
    def path_change(self, path=r'C:\Users\86182\Downloads'):
 
        chrome_options = webdriver.ChromeOptions()
        prefs = {'profile.default_content_settings.popups': 0,  # 防止保存弹窗
                 'download.default_directory': path,  # 设置默认下载路径
                 "profile.default_content_setting_values.automatic_downloads": 1  # 允许多文件下载
                 }
        chrome_options.add_experimental_option('prefs', prefs)
        self.driver = webdriver.Chrome(options=chrome_options)
 
 
    def main_get(self):
        self.path_change(self.new_path)
        self.modis_get()
 
 
if __name__ == '__main__':
    modis = Selenium_modis_get(target_path='你的目标文件路径（绝对）',new_path=r'你希望下载的路径', username='你的username', pd='')
    modis.main_get()
    # modis.path_change()#数据下载完之后单独执行此代码即可改回默认下载路径(modis.main_get()注释掉)

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