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spider.py
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from urllib.parse import urlparse
from bs4 import BeautifulSoup
from urllib import parse
from domain import *
from general import *
from blog_parse import *
from selenium import webdriver
from selenium.common.exceptions import StaleElementReferenceException
import itertools
import requests
import time
class Spider:
project_name = ''
base_url = ''
domain_name = ''
user_id = ''
queue_file = ''
crawled_file = ''
queue = set()
crawled = set()
driver = None
def __init__(self, project_name, base_url, domain_name):
Spider.project_name = 'user\\' + project_name
Spider.base_url = base_url
Spider.domain_name = domain_name
Spider.queue_file = Spider.project_name + '/queue.txt'
Spider.crawled_file = Spider.project_name + '/crawled.txt'
if (Spider.driver == None):
# selenium web browser 관련설정
path = "C:\\Users\\rhyme\\Downloads\\chromedriver_win32\\chromedriver.exe"
options = webdriver.ChromeOptions()
options.add_argument('--headless')
options.add_argument('--window-size=1920x1080')
options.add_argument('--disable-gpu')
Spider.driver = webdriver.Chrome(executable_path=path, options=options)
self.boot()
self.crawl_page('First spider', Spider.base_url)
# Creates directory and files for project on first run and starts the spider
@staticmethod
def boot():
create_project_dir(Spider.project_name)
create_data_files(Spider.project_name, Spider.base_url)
Spider.queue = file_to_set(Spider.queue_file)
Spider.crawled = file_to_set(Spider.crawled_file)
# Get Blogger's unique attribute in page url (only can use on naver blog)
@staticmethod
def get_blogger_ID(page_url):
id = urlparse(page_url).path.replace("/", "")
return id
# Updates user display, fills queue and updates files
@staticmethod
def crawl_page(thread_name, page_url):
Pdomain_name = get_sub_domain_name(page_url).split('.')
# medium 블로그 크롤링 시 이용
if Pdomain_name[-2] == "medium":
print('Queue ' + str(len(Spider.queue)) + ' | Crawled ' + str(len(Spider.crawled)))
Spider.gather_links_in_medium(Spider.base_url, Spider.driver)
Spider.driver.close()
Spider.driver.switch_to.window(Spider.driver.window_handles[0])
Spider.queue.remove(page_url)
Spider.crawled.add(page_url)
Spider.update_files()
# db.yml 파일 사용 시 주석처리 해줘야 함. (동적 블로그 크롤링)
elif Pdomain_name[-2] == "blogspot":
print('Queue ' + str(len(Spider.queue)) + ' | Crawled ' + str(len(Spider.crawled)))
Spider.gather_links_in_sync_web(page_url, Spider.driver)
# 켜져있는 tab을 1개 빼고 모두 제거
for i in range(len(Spider.driver.window_handles)-1):
Spider.driver.close()
Spider.driver.switch_to.window(Spider.driver.window_handles[0])
Spider.crawled.add(page_url)
Spider.queue.remove(page_url)
Spider.update_files()
# blog.naver.com // brunch.co.kr 전용 크롤링
# naver 일 때, linear함수의 int 인자값으로 0, brunch 일 때, 인자값으로 1 입력
elif (len(Pdomain_name) > 2 and
(Pdomain_name[-3] == "brunch" or Pdomain_name[-2] == "naver")):
idx = 0
if (Pdomain_name[-3] == "brunch"): idx = 1
Spider.user_id = Spider.get_blogger_ID(Spider.base_url)
Spider.find_links_in_linear(page_url, Spider.user_id, idx)
Spider.queue.remove(page_url)
Spider.update_files()
# 그 외 블로그 크롤링 시 사용하는 코드
else:
# print(thread_name + ' now crawling ' + page_url)
print('Queue ' + str(len(Spider.queue)) + ' | Crawled ' + str(len(Spider.crawled)))
Spider.gather_links(Spider.base_url, page_url)
Spider.queue.remove(page_url)
Spider.crawled.add(page_url)
Spider.update_files()
@staticmethod
def is_not_anchor_link(url):
# find('#') 값이 -1일 경우 발견하지 못함("#"이 string 내에 없음)을 의미한다.
if url.split('/')[-1].find('#') != -1:
return False
return True
# Converts raw response data into readable information and checks for proper html formatting
@staticmethod
def gather_links(base_url, page_url):
# maximum blog article is 200 per blog
if len(Spider.crawled) >= 200:
return
try:
if page_url in Spider.crawled:
return
try:
req = requests.get(page_url,
headers = {'User-Agent': 'Mozilla/5.0 (Macintosh; Intel Mac OS X 10_11_5) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/50.0.2661.102 Safari/537.36'})
req.raise_for_status()
except requests.HTTPError as e:
print("Error : 페이지가 존재하지 않습니다. ")
return
soup = BeautifulSoup(req.text, 'html.parser')
res = soup.find_all('a', href=True)
for link in res:
url = parse.urljoin(base_url, link.get('href'))
Spider.add_links_to_queue(url)
parse_content(base_url, page_url, req.text)
except Exception as e:
print("[ERROR:gather_links] : ", str(e))
return
# Saves queue data to project files
@staticmethod
def add_links_to_queue(link):
if link in Spider.crawled:
return
if (link.find("https") == 0):
link = link.replace("https", "http")
# cheking is same domain
link_domain = get_domain_name(link)[0:len(Spider.domain_name)]
if Spider.domain_name in link_domain and Spider.is_not_anchor_link(link):
Spider.queue.add(link)
@staticmethod
def find_links_in_linear(base_url, userid, num):
URL_FORMAT = ["http://blog.naver.com/PostList.nhn?blogId={blog_id}¤tPage={page}"
, "http://brunch.co.kr/{blog_id}/{page}"]
Blog_platform = URL_FORMAT[num]
size_of_block = 0
# 브런치 블로그 크롤링 , num = 1
# 요청을 보낸 뒤, 페이지가 없을 경우 iteration을 종료한다.
if num == 1:
unconnected = 0
for page in itertools.count(start=1):
if (unconnected >= 8):
break
url = Blog_platform.format(blog_id=userid, page=page)
try:
r = requests.get(url)
r.raise_for_status()
except requests.HTTPError as e:
print(e)
unconnected += 1
continue
Spider.crawled.add(url)
print("Now Crawling : " + url + " | Crawled : " + str(len(Spider.crawled)))
size_of_block += 1
parse_content(urlparse(Spider.base_url).netloc, url, r.text)
if (size_of_block >= 10):
Spider.update_files()
size_of_block = 0
else:
# 네이버 블로그 리디렉션
page = 1
# page를 1부터 증가시켜 100개의 page만 확인한다.
while (page < 101):
url = Blog_platform.format(blog_id=userid, page=page)
r = requests.get(url)
soup = BeautifulSoup(r.text, 'html.parser')
redirected_url = soup.find_all('a', {'class': 'fil5 pcol2'})
redirected_url += soup.find_all('a', {
'class': "url pcol2 _setClipboard _returnFalse _se3copybtn _transPosition"})
redirection_url_format = "https://blog.naver.com/PostView.nhn?blogId={blogid}&logNo={log_No}&categoryNo=0&parentCategoryNo=0&viewDate=¤tPage=1&postListTopCurrentPage=1&from=menu"
try:
print("Now Crawling : " + url + " | Crawled : " + str(len(Spider.crawled)))
for i in range(0, len(redirected_url)):
if (redirected_url[i].get('class') == 'fil5 pcol2'
or redirected_url[i].get('class')[0] == 'fil5'):
real_url = redirected_url[i].get('href')
if (real_url.count("/") >= 4):
logNo = urlparse(real_url).path.replace("/", "")[len(userid):]
# href 태그가 id.blog.me 형식일 경우 path 값에는 log 만 존재한다.
else:
logNo = urlparse(real_url).path.replace("/", "")
Spider.crawled.add(redirection_url_format.format(blogid=userid, log_No=logNo))
else:
real_url = redirected_url[i].get('title')
logNo = urlparse(real_url).path.replace("/", "")[len(userid):]
Spider.crawled.add(redirection_url_format.format(blogid=userid, log_No=logNo))
# crawled.txt에 url 추가 후 size_of_block +1
size_of_block += 1
req = requests.get(redirection_url_format.format(blogid=userid, log_No=logNo))
parse_content(urlparse(Spider.base_url).netloc,
redirection_url_format.format(blogid=userid, log_No=logNo), req.text)
# if crawler gathers 50 links in the queue, update crawled.txt file.
if (size_of_block >= 10):
Spider.update_files()
size_of_block = 0
page += 1
except Exception as e:
print("네이버 블로그 크롤링 error발생 : " + e)
break
# 추가되지않고 남아있는 url을 모두 update해준다.
Spider.update_files()
# blogspot 동적 페이지 용 크롤러
@staticmethod
def add_links_in_sync_web(link):
is_same_domain = True
try:
if (link in Spider.queue) or (link in Spider.crawled):
return False
# .com, .kr이 다르더라도 id, platform이 같은 경우는
# 같은 블로그의 글로 취급한다.
for i in range(len(Spider.base_url) - 3):
if Spider.domain_name[i] != get_domain_name(link)[i]:
return False
return is_same_domain
except Exception as e:
print(str(e))
return
@staticmethod
def gather_links_in_sync_web(page_url, driver, num):
openurl = "window.open('{url}');"
openurl = openurl.format(url=page_url)
driver.execute_script(openurl)
driver.switch_to.window(driver.window_handles[-1])
time.sleep(1)
# 동적 blogspot
if (num == 1):
raw_links = driver.find_elements_by_xpath("//a[@href]")
# 이미지 파일같은 쓸모없는 링크를 전부 제외한 set()을 만든다.
normal = set()
j = 0
while (j < len(raw_links)) :
for raw in raw_links:
# 긁어온 URL이 image/ pdf/ javascript 인지 확인
try:
isItImage = raw.get_attribute("href")
if (isItImage.find(".jpg") != -1 or isItImage.find(".png") != -1
or isItImage.find(".PNG") != -1 or isItImage.find("pdf") != -1
or isItImage.find("javascript:void(0)") != -1 or isItImage.find("#") != -1
or isItImage.find("feeds") != -1 or isItImage.find("search") != -1):
j += 1
continue
# 긁어온 URL이 같은 도메인이 아닐 경우/ 이미 queue에 존재하는 경우 continue
if (Spider.add_links_in_sync_web(isItImage) != True):
j += 1
continue
j += 1
normal.add(isItImage)
except StaleElementReferenceException as e:
j += 1
i =0
while (i< len(normal)):
for link in normal:
try:
# 글 하나만 존재하는 링크일 경우 parse_content 이후 서버에 보내준다.
if (link.count("/") > 4 and
(link.find("html") != -1 or link[-1] != "/")):
print("Crawl sync link : " + link)
Spider.crawled.add(link)
openurl = "window.open('{url}');"
openurl = openurl.format(url=link)
driver.execute_script(openurl)
driver.switch_to.window(driver.window_handles[-1])
data = Spider.parse_sync_blogspot(urlparse(Spider.base_url).netloc, link, driver)
if (data == False): continue
buffered_document_send(data)
driver.close()
driver.switch_to.window(driver.window_handles[0])
# 글 하나만 있는 링크가 아닐 경우 다시 접속해서 다른 링크가 있는지 확인한다.(queue에 추가)
else:
Spider.queue.add(link)
i += 1
except StaleElementReferenceException as e:
i += 1
print(str(e))
@staticmethod
def add_links_in_medium(link):
Spider.crawled.add(link)
# medium 페이지 용 크롤러 (도메인 판별)
@staticmethod
def gather_links_in_medium(base_url, driver):
openurl = "window.open('{url}');"
openurl = openurl.format(url=base_url)
try:
driver.execute_script(openurl)
driver.switch_to.window(driver.window_handles[-1])
lenOfPage = driver.execute_script(
"window.scrollTo(0, document.body.scrollHeight);var lenOfPage=document.body.scrollHeight;return lenOfPage;")
match = False
while (match == False):
lastCount = lenOfPage
time.sleep(3)
lenOfPage = driver.execute_script(
"window.scrollTo(0, document.body.scrollHeight);var lenOfPage=document.body.scrollHeight;return lenOfPage;")
if lastCount == lenOfPage: match = True
raw_links = driver.find_elements_by_xpath("//a[@href]")
for link in raw_links:
href = link.get_attribute("href")
if (href.find('/p/') != -1):
href = base_url + "/" + href[href.find('/p/') + 3: href.find('?')]
print("Crawl : " + href)
Spider.add_links_in_medium(href)
html = requests.get(href)
html = html.text
parse_content(Spider.base_url, href, html)
except Exception as e:
print(str(e))
@staticmethod
def update_files():
set_to_file(Spider.queue, Spider.queue_file)
set_to_file(Spider.crawled, Spider.crawled_file)
@staticmethod
def parse_sync_blogspot(base_url, page_url, driver):
try:
d = {}
d['blog'] = base_url
d['url'] = page_url
title = driver.find_elements_by_xpath('//*[@id="Blog1"]/div[1]/div/div/div/div[1]/h3')\
+ driver.find_elements_by_xpath('//*[@id="Blog1"]/div/article/div/div/h3')
content = driver.find_elements_by_xpath('//*[@class="post-body entry-content"]') \
+ driver.find_elements_by_xpath('//*[@class="post-body entry-content float-container"]')
date = driver.find_elements_by_xpath('//*[@id="Blog1"]/div/article/div/div/div[2]/div/span/a/time') \
+ driver.find_elements_by_xpath('//*[@id="Blog1"]/div[1]/div/div/div/div[1]/div[3]/div[1]/span[2]/a/abbr')
date = date[0].get_attribute("title")[0:10]
d['date'] = date[0].text
d['title'] = title[0].text
d['content'] = content[0].text
return d
except IndexError as e:
print("Index out of range error 발생\n")
return False