如何使用 selenium IDE 和 python 从 pdf 页面（链接）获取所有页面文本

Question

我正在尝试从 PDF 页面获取文本，因为我将使用 XPATH selenium IDE 和 python 逐个点击 pdf 页面链接但它给了我空数据，有时它给了我一页 PDF 内容 页面，但不是特定格式。

如何从pdf链接的所有页面中获取文本？

这是我的代码：

from selenium import webdriver
from selenium.common.exceptions import TimeoutException
from selenium.webdriver.common.by import By
from selenium.webdriver.support.ui import WebDriverWait
from selenium.webdriver.support import expected_conditions as EC 

url = "http://www.incredibleindia.org"
driver = webdriver.Firefox()
driver.get(url) 
# wait for menu to being loaded
WebDriverWait(driver,10).until(EC.presence_of_element_located((By.CSS_SELECTOR, "div.menu li > a")))

#article under media tab 
article_link = [a.get_attribute('href') for a in   driver.find_elements_by_xpath("html/body/div[3]/div/div[1]/div[2]/ul/li[3]/ul/li[6]/a")]
#all important news links under trade tab 
for link in article_link:
    print link
    driver.get(link) 
    #check article sublinks css available on article link page
    try:
         WebDriverWait(driver, 10).until(EC.presence_of_element_located((By.CSS_SELECTOR, "div.article-full-div")))
    except TimeoutException:
         print driver.title, "No news links under media tab"
    #alrticle sub links under article tab 
    article_sub_links = [a.get_attribute('href') for a in   driver.find_elements_by_xpath(".//*[@id='article-content']/div/div[2]/ul/li/a")]

    print "article sub links"
    for link in article_sub_links:
        print link

        driver.get(link)  
        try:
            WebDriverWait(driver, 10).until(EC.presence_of_element_located((By.CSS_SELECTOR, "div.textLayer")))
        except TimeoutException:
            print driver.title, "No news links under media tab"

        content = [a.text for a in driver.find_elements_by_xpath(".//*[contains(@id,'pageContainer')]")] 
        print content 
        for data in content:
            print data

输出：

http://www.incredibleindia.org/en/media-black-2/articles
article sub links
http://www.incredibleindia.org/images/articles/Ajanta.pdf
[u'', u'', u'']



http://www.incredibleindia.org/images/articles/Bedhaghat.pdf
404 - Error: 404 No news links under media tab` 
[]
http://www.incredibleindia.org/images/articles/Bellur.pdf
[u'', u'', u'']



http://www.incredibleindia.org/images/articles/Bidar.pdf
[u'', u'', u'']



http://www.incredibleindia.org/images/articles/Braj.pdf
[u'', u'', u'', u'']




http://www.incredibleindia.org/images/articles/Carnival.pdf
[u'', u'', u'']`

Answer 1

我认为您需要进入“textlayer”（div 元素，每个页面容器内都有class="textlayer"）。您还需要在异常处理块中使用continue：

for link in article_sub_links:
    driver.get(link)

    try:
        WebDriverWait(driver, 10).until(EC.visibility_of_element_located((By.CSS_SELECTOR, "div.textLayer")))
    except TimeoutException:
        print driver.title, "Empty content"
        continue

    content = [a.text for a in driver.find_elements_by_css_selector("div[id^=pageContainer] div.textLayer")]
    for data in content:
        print data