我想用下面的代码(由F.Hoque开发)从本网站下载一个PDF文件。
import scrapy
from scrapy_selenium import SeleniumRequest
from selenium import webdriver
from selenium.webdriver.chrome.options import Options
from selenium.webdriver.support.ui import WebDriverWait
from selenium.webdriver.common.by import By
from selenium.webdriver.support import expected_conditions as EC
class TestSpider(scrapy.Spider):
name = 'test'
def start_requests(self):
yield SeleniumRequest(
url='https://www.ons.gov.uk',
callback=self.parse,
wait_time = 3,
screenshot = True
)
def parse(self, response):
driver = response.meta['driver']
driver.save_screenshot('screenshot.png')
WebDriverWait(driver, 20).until(EC.element_to_be_clickable((By.NAME, "q"))).send_keys("Education and childcare")
driver.save_screenshot('screenshot_1.png')
click_button=driver.find_element_by_xpath('//*[@id="nav-search-submit"]').click()
driver.save_screenshot('screenshot_2.png')
click_button=driver.find_element_by_xpath('//*[@id="results"]/div[1]/div[2]/div[1]/h3/a/span').click()
click_button=driver.find_element_by_xpath('//*[@id="main"]/div[2]/div[1]/section/div/div[1]/div/div[2]/h3/a/span').click()
click_button=driver.find_element_by_xpath('//*[@id="main"]/div[2]/div/div[1]/div[2]/p[2]/a').click()
另外,我不确定settings.py要将其添加到哪个www.example.com文件中(因为运行代码需要它):
# Middleware
DOWNLOADER_MIDDLEWARES = {
'scrapy_selenium.SeleniumMiddleware': 800
}
# Selenium
from shutil import which
SELENIUM_DRIVER_NAME = 'chrome'
SELENIUM_DRIVER_EXECUTABLE_PATH = which('chromedriver')
SELENIUM_DRIVER_ARGUMENTS = ['--headless']
我正在通过Anaconda 3使用Spyder,我有五个不同的settings.py文件。以下是它们各自的位置:
"C:\Users\David\anaconda3\Lib\site-packages\scrapy\commands\settings.py"
"C:\Users\David\anaconda3\pkgs\bokeh-2.3.2-py38haa95532_0\Lib\site-packages\bokeh\settings.py"
"C:\Users\David\anaconda3\Lib\site-packages\bokeh\settings.py"
"C:\Users\David\anaconda3\pkgs\isort-5.8.0-pyhd3eb1b0_0\site-packages\isort\settings.py"
"C:\Users\David\anaconda3\Lib\site-packages\isort\settings.py"
我settings.py应该将第二个代码保存到以下哪个www.example.com文件中?
1条答案
按热度按时间bqjvbblv1#
Scrapy可以使用媒体/图像管道下载PDF文件/图像。请查看输出,它们只包含PDF链接,而不是文件。您会注意到,该URL在末尾没有
.pdf
扩展名,而不是只有链接,如果它有.pdf
,那么它将是一个文件,只有这样,我才可以从这里使用Scrapy媒体管道下载PDF文件。如果你点击输出文件,那么它将手动开始downlown.我不知道端点/pdf
可以转化为.pdf,然后可以下载输出: