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#coding:utf-8

"""

下载煎蛋妹子到本地，通过selenium、正则表达式、phantomjs、Beautifulsoup实现

"""

import re

import os

from selenium import webdriver

from selenium.webdriver.support.wait import WebDriverWait

from selenium.webdriver.support import expected_conditions as EC

from selenium.webdriver.common.by import By

from selenium.common.exceptions import TimeoutException

from bs4 import BeautifulSoup

from urllib import urlretrieve

#解决谷歌浏览器正受到自动测试软件的控制

# options = webdriver.ChromeOptions()

# options.add_argument('disable-infobars')

url = '//jandan.net/ooxx'

# driver = webdriver.Chrome(chrome_options=options)

driver = webdriver.PhantomJS()

wait = WebDriverWait(driver, 30)

#下载的煎蛋妹子保存的文件夹

img_save_file = 'images'

#获取总页数。打开煎蛋网-妹子图默认页面可以获取到总页数

def get_default_page_num():

    try:

        driver.get(url)

        page_element = wait.until(EC.presence_of_element_located((By.CSS_SELECTOR, '.current-comment-page')))

        return page_element.text

    except TimeoutException:

        get_default_page_num()

#获取图片的url

def get_img_url(page_number):

    img_url_list = []

    url = r'//jandan.net/ooxx/page-'+ str(page_number) + r'#comments'

    print url

    # url = '//www.baidu.com'

    html = driver.get(url)

    try:

        driver.get(url)

        wait.until(EC.presence_of_element_located((By.CSS_SELECTOR, '#comments > ol img')))

    except TimeoutException:

        print "打开页面失败，重新加载该页面"

        get_img_url(page_number)

    #获取页面html元素

    html = driver.page_source

    #通过BeautifulSoup解析

    soup = BeautifulSoup(html, 'html.parser')

    #找出所有为img的标签

    imgs = soup.find_all('img')

    #gif图片需要获取ora_src属性，才是完整的gif图片。has_attr 判断是否有某个属性，attrs可以获取属性值

    for img in imgs:

        if img.has_attr('org_src'):

            img_url = img.attrs['org_src']

        else:

            img_url = img.attrs['src']

        img_url_list.append(img_url)

    return img_url_list

#下载图片，通过urllib的urlretrieve实现

def download_img(img_url):

    img_name = img_url.split('/')[-1]

    img_save_path = img_save_file + '/' +img_name

    urlretrieve(img_url, img_save_file + '/' + img_name)

#创建图片存储所在的文件夹

def add_img_save_file(img_save_file):

    if os.path.exists(img_save_file):

        pass

    else:

        os.makedirs(img_save_file)

def main():

    add_img_save_file(img_save_file)

    #通过正则表达式提取当前的页数

    partner = re.compile(r'(\d+)')

    content = get_default_page_num()

    total_pages = partner.search(content).group()

    for i in range(1, int(total_pages) + 1):

        print "正在下载第" + str(i) + '的图片，url为：',

        img_url_list = get_img_url(str(i))

        for img_url in img_url_list:

            download_img(img_url)

if __name__ == '__main__':

main()

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