def __init__(self,
worker_num=10,
chunk_size=10000,
log_interval=600,
data_dir='data',
log_dir='log'):
self.chunk_size = chunk_size
self.log_interval = log_interval
self.urls = Queue()
self.results = Queue()
self.url_cache = Set()
self.name_cache = Set()
self.black_urls = Set()
self.black_cache = Dict()
self.chunk_num = 0
self.parser = HtmlParser(home='https://baike.baidu.com')
self.last = 0
self.state = 1
if not os.path.exists(data_dir):
os.mkdir(data_dir)
if not os.path.exists(log_dir):
os.mkdir(log_dir)
self.data_dir = data_dir
self.log_dir = log_dir
self.writer = Thread(target=self._write)
self.logger = Timer(log_interval, self._log)
self.spiders = [Thread(target=self._scrap) for _ in range(worker_num)]
def __init__(self, provider=None, charset=None):
'''
target: (url, charset, provider)
url - 页面url
provider - 解析页面的 parse provider (js文件)
charset - 页面编码
'''
self._targets = []
self._proceeding_cursor = 0
self.parser = HtmlParser()
self._default_request_headers = {} #默认的http请求头
self._default_provider = provider
self._default_charset = charset
def gl(self, html):
hrefs = set()
parser = HtmlParser(html)
for href in parser.hrefs:
u_parse = urlparse(href)
if u_parse.netloc == '' or u_parse.netloc == self.domain:
hrefs.add(href)
return hrefs
def find_signature(self, html_content):
# return True if it finds signature in script content else False
# we have to parse HTML since script only works if HTML is correct syntax.
parser = HtmlParser(html_content)
if any(self.SIGNATURE in s for s in parser.script_text):
return True
else:
return False
def parseHtml(self, base_url, html):
try:
parser = HtmlParser()
parsing_result = parser.parse(html, False)
[title_text, full_text, core_text, rest_text, all_links, etc_datas] = parsing_result
tree = parser.tree
title = ""
body = ""
write_time = 0
imgs = None
res = dict()
s_id = tree.root.id
view_node = tree.root
e_id = view_node.findENode()
(
extractedContent,
rest_text,
links_in_summary,
imgs,
core_len,
text_list,
) = tree.root.getTextImageWithPosition(s_id, e_id, "IN")
body_pieces = extractedContent.split()
body_text = " ".join(body_pieces)
body = body_text.replace("|11818|", "&")
res["all_links"] = all_links
res["links"] = links_in_summary
res["image_count"] = len(imgs)
res["images"] = list()
for i_link in imgs:
r_image = parser.makePerfectURL(i_link)
res["images"].append(r_image)
res["embed_links"] = parser.embed_links
res["meta_data"] = parser.meta_dict
res["body_extension"] = rest_text.strip()
return body, res
except Exception, msg:
pass
class SpiderWorker(object):
def __init__(self, url, size=20):
self.url = url
self.pool = ProxiesPool()
self.parser = HtmlParser(url)
self.url_manager = URLSManager(url_pattern=url, size=size)
self.writer = FileWriter()
@Decorator.time
def start(self):
self.url_manager.add_url(self.url)
while self.url_manager.has_next():
hd = HtmlDownloader(proxies=self.pool.get_proxy_ip())
url = self.url_manager.get_url()
data = hd.download(url)
urls = self.parser.simple_tags(data, 'a', attributes=['href'])
self.url_manager.add_urls([url_.get('href') for url_ in urls])
title = self.parser.element(data, 'title')
title = title.getText() if title else 'unknown'
self.writer.load_data('[%s] %s' % (title, url))
self.writer.writer()
def __init__(self, provider = None, charset = None):
'''
target: (url, charset, provider)
url - 页面url
provider - 解析页面的 parse provider (js文件)
charset - 页面编码
'''
self._targets = []
self._proceeding_cursor = 0
self.parser = HtmlParser()
self._default_request_headers = {} #默认的http请求头
self._default_provider = provider
self._default_charset = charset
def __update_proxy_pool(self):
downloader = HtmlDownloader()
proxy_pool = ProxiesPool()
parser = HtmlParser()
data = downloader.download(self.proxy_site)
speed_times = parser.multilevel_tags(data, [{'tr': None}, {'div': {'class': 'bar'}}])
ip_data = parser.elements(data, 'tr')[1:]
speed = speed_times[::2]
times = speed_times[1::2]
for i, ip in enumerate(ip_data):
d = {}
for j, value in enumerate(filter(lambda x: x, ip_data[i].text.split('\n'))):
if j == 0:
d['ip'] = value
elif j == 1:
d['port'] = value
continue
if len(d.keys()) != 2:
continue
if self.__re_number(speed[i].get('title')) > 1 \
or self.__re_number(times[i].get('title')) > 1:
continue
proxy_pool.add({'http': '%s:%s' % (d.get('ip'), d.get('port'))})
def get_links(self, html):
"""
Parse return link in html contents
by finding href attribute in a tag.
"""
hrefs = set()
parser = HtmlParser(html)
# get href tags from parsed results
for href in parser.hrefs:
u_parse = urlparse(href)
# check whether href content is same domain with seed url
if u_parse.netloc == '' or u_parse.netloc == self.domain:
hrefs.add(href)
return hrefs
class Spider():
_proceed_num = 10 #最大抓取页面数
_proceed_wait = 2 #每个页面抓取之间间隔
'''
(parse) provider 是一段js脚本，用来解析页面dom，产生数据
数据再通过 __callback__ 传给 Spider 的 onparsed 事件
'''
_default_provider = None #默认的provider方法
_default_charset = None
logger = logger().instance()
def __init__(self, provider=None, charset=None):
'''
target: (url, charset, provider)
url - 页面url
provider - 解析页面的 parse provider (js文件)
charset - 页面编码
'''
self._targets = []
self._proceeding_cursor = 0
self.parser = HtmlParser()
self._default_request_headers = {} #默认的http请求头
self._default_provider = provider
self._default_charset = charset
@staticmethod
def setupCookies():
'''
可开启cookie支持，用于需登录验证等页面的抓取
'''
cookie_jar = cookielib.CookieJar()
opener = urllib2.build_opener(urllib2.HTTPCookieProcessor(cookie_jar))
urllib2.install_opener(opener)
def setRequestHeader(self, key, value):
self._default_request_headers[key] = value
def setUserAgent(self, ua=Webkit().userAgent):
'''
请求带上 User-Agent
'''
self.setRequestHeader('User-Agent', ua)
def append(self, url, charset=None, provider=None, headers={}, body={}):
'''
添加一个新的抓取目标
'''
request_headers = {}
request_headers.update(self._default_request_headers)
request_headers.update(headers)
#self.logger.info(request_headers)
self._targets.append(
(url, charset or self._default_charset, provider
or self._default_provider, request_headers, body))
def proceed(self, proceed_num=None, proceed_wait=None):
proceed_num = proceed_num or self._proceed_num
proceed_wait = proceed_wait or self._proceed_wait
while (self._proceeding_cursor < len(self._targets)
and self._proceeding_cursor < proceed_num):
try:
target = self._targets[self._proceeding_cursor]
self.logger.info('new proceeding... target: ' + target[0])
(url, charset, provider, headers, body) = target
script = "require('" + provider + "');"
self.parser.parse(url,
charset,
headers,
body,
script,
callback=self.onparsed)
except Exception, ex:
self.logger.error(ex)
self.logger.debug(traceback.format_exc())
finally:
def _read_in_format(self, file):
return HtmlParser(file)
def __init__(self, url, size=20):
self.url = url
self.pool = ProxiesPool()
self.parser = HtmlParser(url)
self.url_manager = URLSManager(url_pattern=url, size=size)
self.writer = FileWriter()
class Spider(object):
def __init__(self,
worker_num=10,
chunk_size=10000,
log_interval=600,
data_dir='data',
log_dir='log'):
self.chunk_size = chunk_size
self.log_interval = log_interval
self.urls = Queue()
self.results = Queue()
self.url_cache = Set()
self.name_cache = Set()
self.black_urls = Set()
self.black_cache = Dict()
self.chunk_num = 0
self.parser = HtmlParser(home='https://baike.baidu.com')
self.last = 0
self.state = 1
if not os.path.exists(data_dir):
os.mkdir(data_dir)
if not os.path.exists(log_dir):
os.mkdir(log_dir)
self.data_dir = data_dir
self.log_dir = log_dir
self.writer = Thread(target=self._write)
self.logger = Timer(log_interval, self._log)
self.spiders = [Thread(target=self._scrap) for _ in range(worker_num)]
def start(self, url):
new_urls, new_data = self.parser.parse(url)
self.results.put(new_data)
self.url_cache.add(url)
self.name_cache.add(new_data['name'])
for url in new_urls:
self.urls.put(url)
self.logger.start()
self.writer.start()
for spider in self.spiders:
spider.start()
def _write(self):
"""只使用self.results
"""
while self.state:
self.chunk_num += 1
n = 0
with open(
os.path.join(self.data_dir,
'{}.json'.format(self.chunk_num)),
'wb') as fp:
while n < self.chunk_size:
if not self.results.empty():
result = self.results.get()
line = json.dumps(result, ensure_ascii=False) + '\n'
fp.write(line.encode('utf8'))
n += 1
else:
sleep(10)
def _log(self):
now = len(self.name_cache)
increase = now - self.last
self.last = now
if increase == 0:
self.state = 0
print('Exit: no entities scraped in this round.')
exit()
else:
with open(os.path.join(self.log_dir, 'log'), 'ab+') as fp:
message = '新增词条数量：{}，已抓取词条数量：{}；已获取url数量：{}，缓存任务数量：{}，缓存结果数量：{}.'.format(
increase,
now,
len(self.url_cache),
self.urls._qsize(),
self.results._qsize(),
) + '\n'
fp.write(message.encode('utf8'))
timer = Timer(self.log_interval, self._log)
timer.start()
def _scrap(self):
while self.state:
if not self.urls.empty():
url = self.urls.get()
try:
new_urls, new_data = self.parser.parse(url)
except:
self.url_cache.remove(url)
# 多次请求不成功的url加入黑名单
if url not in self.black_cache:
self.black_cache[url] = 1
self.black_cache[url] += 1
if self.black_cache[url] >= 3:
self.black_urls.add(url)
continue
name = new_data['name']
if name not in self.name_cache:
self.name_cache.add(name)
if new_data['infomation']: #剔除没有属性信息的词条
self.results.put(new_data)
for url in new_urls:
if url not in self.url_cache and url not in self.black_urls:
self.url_cache.add(url)
self.urls.put(url)
else:
sleep(10)
# -*- coding: utf-8-*-
import sys, requests, json, os, io
from parser import HtmlParser
from datahandler import DataHandler
if __name__ == '__main__':
parse = HtmlParser()
datahandler = DataHandler()
datahandler.SaveFiles()
# 判断要检索的范围
downList = []
with open('./data/error_page.txt') as data_file:
downList = json.load(data_file)
parser = HtmlParser()
parser.pages = downList
parser.bar = ProgressBar(total=len(downList))
parser.parse()
class Spider():
_proceed_num = 10 #最大抓取页面数
_proceed_wait = 2 #每个页面抓取之间间隔
'''
(parse) provider 是一段js脚本，用来解析页面dom，产生数据
数据再通过 __callback__ 传给 Spider 的 onparsed 事件
'''
_default_provider = None #默认的provider方法
_default_charset = None
logger = logger().instance()
def __init__(self, provider = None, charset = None):
'''
target: (url, charset, provider)
url - 页面url
provider - 解析页面的 parse provider (js文件)
charset - 页面编码
'''
self._targets = []
self._proceeding_cursor = 0
self.parser = HtmlParser()
self._default_request_headers = {} #默认的http请求头
self._default_provider = provider
self._default_charset = charset
@staticmethod
def setupCookies():
'''
可开启cookie支持，用于需登录验证等页面的抓取
'''
cookie_jar = cookielib.CookieJar()
opener = urllib2.build_opener(urllib2.HTTPCookieProcessor(cookie_jar))
urllib2.install_opener(opener)
def setRequestHeader(self, key, value):
self._default_request_headers[key] = value
def setUserAgent(self, ua = Webkit().userAgent):
'''
请求带上 User-Agent
'''
self.setRequestHeader('User-Agent', ua)
def append(self, url, charset = None , provider = None, headers = {}, body = {}):
'''
添加一个新的抓取目标
'''
request_headers = {}
request_headers.update(self._default_request_headers)
request_headers.update(headers)
#self.logger.info(request_headers)
self._targets.append((url, charset or self._default_charset, provider or self._default_provider, request_headers, body))
def proceed(self, proceed_num = None, proceed_wait = None):
proceed_num = proceed_num or self._proceed_num
proceed_wait = proceed_wait or self._proceed_wait
while(self._proceeding_cursor < len(self._targets) and self._proceeding_cursor < proceed_num):
try:
target = self._targets[self._proceeding_cursor]
self.logger.info('new proceeding... target: ' + target[0])
(url, charset, provider, headers, body) = target
script = "require('" + provider + "');"
self.parser.parse(url, charset, headers, body, script, callback=self.onparsed)
except Exception, ex:
self.logger.error(ex)
self.logger.debug(traceback.format_exc())
finally:
