def process_response(self, request, response, spider):
"""Only allow HTTP response types that match the given regular
expressions whitelist. Each spider must define a whitelist
iterable containing regular expressions whose content types
the spider wishes to download.
"""
whitelist = getattr(spider, "whitelist", None)
if not whitelist:
return response
content_type = response.headers.get('content-type', None)
if not content_type:
logging.info(
"spider {}: ignored: {} does not contain a content-type header"
.format(spider.name, response.url))
raise IgnoreRequest()
if self.is_content_type_okay(whitelist, content_type):
return response
logging.info(
"spider {}: ignored: {} has type {}, which was not whitelisted".
format(spider.name, response.url, content_type))
raise IgnoreRequest()
def process_request(self, request, spider):
if hasattr(
request, 'meta'
) and 'webdriver' in request.meta and request.meta['webdriver'].get(
'name', '') == 'selenium_grid':
driver = self.get_driver()
if driver:
try:
meta = request.meta['webdriver']
action = meta.get('module', None)
if not action:
raise IgnoreRequest(
'selenium grid request must have "act" item in meta'
)
m = importlib.import_module('zeus_actions.' + action)
f = getattr(m, 'act')
if f is None or not hasattr(f, '__call__'):
raise IgnoreRequest(
'module %s must implement "act" method' % action)
self.driver.get(request.url)
f(self.driver)
body = self.driver.page_source
return HtmlResponse(url=request.url,
body=body,
request=request,
encoding='utf-8')
finally:
#self.driver.close()
pass
def process_request(self, request, spider):
# Called for each request that goes through the downloader
# middleware.
# Must either:
# - return None: continue processing this request
# - or return a Response object
# - or return a Request object
# - or raise IgnoreRequest: process_exception() methods of
# installed downloader middleware will be called
# if request.url.rstrip() in self.bing_archive:
# raise IgnoreRequest()
for word in self.word_to_ignore:
if word.lower() in request.url.lower():
raise IgnoreRequest()
for ext in self.extensions_to_ignore:
if request.url.lower().endswith(ext):
raise IgnoreRequest()
# with open(self.bing_archive_path,'a') as f:
# f.write(request.url+"\n")
self.visited_urls.append(request.url)
return None
def process_response(self, request, response, spider):
"""
要考虑两种情况，一是被封，二是ip 失效
:param request:
:param response:
:param spider:
:return:
"""
proxy_str = request.meta['proxy']
proxy = ProxyItem.parse(proxy_str)
# 持有的是方法，只有一个实例，所以并发时 self.proxy 应该是不准确的，需从 request 获取
code, _ = douyin.parse_result(response.body.decode())
if code == 1:
proxy_manager.success(proxy)
elif code == 2:
proxy_manager.banned(proxy)
if douyin_spider.ANONYMOUS:
# 匿名则忽略并继续 ，不匿名返回处理
raise IgnoreRequest()
else:
return response
else:
proxy_manager.fail(proxy)
raise IgnoreRequest()
return response
def process_request(self, request, spider): # todo pylint:disable=unused-argument
"""Process incoming request."""
parsed_uri = urlparse(request.url)
domain = '{uri.scheme}://{uri.netloc}/'.format(uri=parsed_uri)
if '.onion' in domain:
if domain[-7:-1] != '.onion':
msg = 'Ignoring request %s, not .onion domain.' % domain
logging.info(msg)
raise IgnoreRequest() # Not .onion domain
# Drop connections to the old onion v2 addresses and other invalid domains
if len(
domain.split('.')[-2].replace('http://', '').replace(
'https://', '')) != 56:
msg = 'Ignoring request %s, not v3 onion domain.' % domain
logging.info(msg)
raise IgnoreRequest() # Not a valid onion v3 address
# List of proxies available
if parsed_uri.scheme == "https": # For those few HTTPS onion websites
tor_proxy_list = settings.get('HTTPS_PROXY_TOR_PROXIES')
else: # Plain text HTTP without TLS
tor_proxy_list = settings.get('HTTP_PROXY_TOR_PROXIES')
# Always select the same proxy for the same onion domain
# This will keep only one underlining Tor circuit to the onion service
# Onion addresses form an uniform distribution
# Therefore this address can be used as a seed for random
hash = '{uri.netloc}'.format(uri=parsed_uri).replace(".onion", "")
random.seed(hash) # A seed for randomness is the onion domain
# Always select the same proxy for the same onion address
request.meta['proxy'] = random.choice(tor_proxy_list)
elif ".i2p" in domain and ".i2p." not in domain:
if parsed_uri.scheme == "https":
request.meta['proxy'] = settings.get('HTTPS_PROXY_I2P')
else:
request.meta['proxy'] = settings.get('HTTP_PROXY_I2P')
def process_request(self, request, spider):
# Get meta prices for comparaison
price = request.meta.get('prop_price', False)
discount_price = request.meta.get('discount_price', False)
if price and discount_price: # It's discount item
# Format prices
price = self.Utils.format_price(price)
discount_price = self.Utils.format_price(discount_price)
# Check price
if price == 0 or discount_price == 0:
raise IgnoreRequest('isRequestItem_price_null')
if price == discount_price:
raise IgnoreRequest('isRequestItem_prices_egal')
# Check if exist
if (request.url, str(discount_price), str(price)) in self.items:
self.DB.update(request.url)
raise IgnoreRequest('already exist')
else:
# Remove it in case
self.DB.delete_one(request.url)
elif price or discount_price: # It's not discount item
raise IgnoreRequest('not_discount_item')
def process_request(self, request, spider):
path = urlparse(request.url).path or '/'
for allow_path in spider.allow_path:
if not match(escape(allow_path), path):
raise IgnoreRequest("outside scope %s")
for deny_path in spider.deny_path:
if match(escape(deny_path), path):
raise IgnoreRequest("outside scope %s")
def process_exception(self, request, exception, spider):
# 出现异常时（超时）使用代理
print("\n出现异常，正在使用代理重试....\n")
if isinstance(exception, pymysql.DatabaseError):
raise IgnoreRequest("数据库错误，不做处理")
if isinstance(exception, (HttpError, DNSLookupError, TimeoutError)):
lines = self.get_proxies()
current_proxy = lines[random.randint(0, len(lines) - 1)].strip()
# 对当前reque加上代理
print("更换代理为{}".format(current_proxy))
raise IgnoreRequest("超过最大请求，{}\t被跳过".format(request.url))
def process_exception(self, request, exception, spider):
# 没有新房时日志记录
province, city = request.meta['data']
if isinstance(exception, DNSLookupError) and isinstance(spider, XinFangSpider) and '/loupan' in request.url:
spider.logger.error(f'{province}-{city} 没有新房。。。')
raise IgnoreRequest()
# return TextResponse(url=request.url, body='没有新房'.encode())
# 没有二手房时日志记录
elif isinstance(exception, DNSLookupError) and spider.name == 'erShouFang' and '/ershoufang' in request.url:
spider.logger.error(f'{province}-{city} 没有二手房。。。')
raise IgnoreRequest()
elif isinstance(exception, DNSLookupError) and spider.name == 'zuFang' and '/zufang' in request.url:
spider.logger.error(f'{province}-{city} 没有租房信息。。。')
raise IgnoreRequest()
def process_response(self, request, response, spider):
"""Process response hook."""
allowed_domains = getattr(spider, 'allowed_domains', None)
blacklist_urls = getattr(spider, 'blacklist_urls', [])
url = response.url
# Offsite check
if not is_url_in_domains(url, allowed_domains):
raise IgnoreRequest(request)
# Blacklist check
for bad_url in blacklist_urls:
if (isinstance(bad_url, str) and url == bad_url) \
or bad_url.search(url):
raise IgnoreRequest(request)
return response
def process_request(self, request, spider):
request.headers['User-Agent'] = random.choice(self.user_agents)
# Drop requests for "other-make"
if 'other-make' in request.url:
raise IgnoreRequest('Other make ignored.')
# Drop duplicate Request
if request.url in self.requests:
raise IgnoreRequest('Dropping duplicate {0}'.format(request.url))
# Otherwise, add URL to seen list
else:
self.requests |= request.url
def process_response(self, request, response, spider):
text = response.text
if text.startswith("<script>") and "__jsl_clearance" in text:
if '__jsl_clearance' in request.cookies:
spider.log("Calculate __jsl_clearance value wrong, Ignore this Request", level=WARNING)
raise IgnoreRequest()
try:
key, value = get_anti_spider_clearance(text.strip()).split("=", 1)
clearance = {key: value}
except:
spider.log("Calculate __jsl_clearance error, Ignore this Request", level=WARNING)
raise IgnoreRequest()
else:
return request.replace(dont_filter=True, cookies=clearance)
return response
def process_request(self, request, spider):
if request.meta.get('dont_cache', False):
return
# Skip uncacheable requests
if not self.policy.should_cache_request(request):
request.meta['_dont_cache'] = True # flag as uncacheable
return
# Look for cached response and check if expired
cachedresponse = self.storage.retrieve_response(spider, request)
if cachedresponse is None:
self.stats.inc_value('httpcache/miss', spider=spider)
if self.ignore_missing:
self.stats.inc_value('httpcache/ignore', spider=spider)
raise IgnoreRequest("Ignored request not in cache: %s" %
request)
return # first time request
# Return cached response only if not expired
cachedresponse.flags.append('cached')
if self.policy.is_cached_response_fresh(cachedresponse, request):
self.stats.inc_value('httpcache/hit', spider=spider)
return cachedresponse
# Keep a reference to cached response to avoid a second cache lookup on
# process_response hook
request.meta['cached_response'] = cachedresponse
def process_response(self, request, response, spider):
if 'x-ignore-response' in request.url:
raise IgnoreRequest()
elif 'x-error-response' in request.url:
_ = 1 / 0
else:
return response
def process_request(self, request, spider):
digest = hash(request.url)
if digest in self.visited:
raise IgnoreRequest("Duplicated url %s"%(request.url))
else:
self.visited.append(digest)
return None
def _redirect(self, redirected, request, spider, reason):
ttl = request.meta.setdefault('redirect_ttl', self.max_redirect_times)
redirects = request.meta.get('redirect_times', 0) + 1
if ttl and redirects <= self.max_redirect_times:
redirected.meta['redirect_times'] = redirects
redirected.meta['redirect_ttl'] = ttl - 1
redirected.meta['redirect_urls'] = request.meta.get('redirect_urls', []) + \
[request.url]
redirected.dont_filter = request.dont_filter
redirected.priority = request.priority + self.priority_adjust
logger.debug(
"Redirecting (%(reason)s) to %(redirected)s from %(request)s",
{
'reason': reason,
'redirected': redirected,
'request': request
},
extra={'spider': spider})
return redirected
else:
logger.debug("Discarding %(request)s: max redirections reached",
{'request': request},
extra={'spider': spider})
raise IgnoreRequest("max redirections reached")
def parse_category(self, response: HtmlResponse) -> HtmlResponse:
"""
List category and traverse product pages.
"""
products_query = response.css(
"section#bc-sf-filter-products > div.product-grid-item")
if not products_query:
raise IgnoreRequest('Product items not found')
self.logger.info(
f'parse product_categories len: {len(products_query)}')
for pdp in products_query.css('div.product-grid-item'):
item_loader = ProductLoader(item=UrgeItem(), selector=pdp)
item_loader.add_css('product_name',
'div.product-text > p.title::text')
item_loader.add_css('product_brand',
'div.product-text > h2.vendor.h5::text')
# get regular product price through OR (,).
item_loader.add_css(
'product_price',
'div.product-text p.price s::text , span[itemprop="price"]::text'
)
item_loader.add_css(
'product_sale_price',
'div.product-text p.sale span[itemprop="price"]::text')
if 'href' in pdp.css('a').attrib:
product_url = pdp.css('a').attrib['href']
yield response.follow(product_url,
callback=self.product_page,
meta={'item': item_loader.load_item()})
def process_request(self, request, spider):
# Called for each request that goes through the downloader
# middleware.
# Must either:
# - return None: continue processing this request
# - or return a Response object
# - or return a Request object
# - or raise IgnoreRequest: process_exception() methods of
# installed downloader middleware will be called
headers = {
'Host': 'twitter.com',
# 'User-Agent': "Opera/9.80 (Macintosh; Intel Mac OS X 10.6.8; U; fr) Presto/2.9.168 Version/11.52",
'Accept':
'text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3',
'Accept-Language': 'zh-CN,zh;q=0.9'
}
try:
content = requests.get(url=request.url, headers=headers).text
except Exception as e:
raise IgnoreRequest(e)
response = HtmlResponse(url=request.url,
body=content,
request=request,
encoding='utf-8')
return response
def test_process_spider_exception(self):
assert self.instance.counters == {'all': 0, 'error': 0}
self.instance.save_response = mock.Mock()
# all conditions are true
self.instance.on_error_enabled = True
self.instance.process_spider_exception('err-response', Exception(),
self.spider)
assert self.instance.counters == {'all': 0, 'error': 1}
# on_error flag is disabled, skipping
self.instance.on_error_enabled = False
self.instance.process_spider_exception('err-response', Exception(),
self.spider)
assert self.instance.counters == {'all': 0, 'error': 1}
# exceeded error limit
self.instance.on_error_enabled = True
self.instance.counters['error'] = 11
self.instance.process_spider_exception('err-response', Exception(),
self.spider)
assert self.instance.counters == {'all': 0, 'error': 11}
# skip IgnoreRequest
self.instance.limits['error'] = 12
self.instance.process_spider_exception('err-response', IgnoreRequest(),
self.spider)
assert self.instance.counters == {'all': 0, 'error': 11}
# all conditions are true again
self.instance.limits['all'] = 12
self.instance.process_spider_exception('err-response', Exception(),
self.spider)
assert self.instance.counters == {'all': 0, 'error': 12}
def _redirect(self, redirected, request, spider, reason):
reason = response_status_message(reason)
redirects = request.meta.get('redirect_times', 0) + 1
if redirects <= self.max_redirect_times:
redirected.meta['redirect_times'] = redirects
redirected.meta['redirect_urls'] = request.meta.get('redirect_urls', []) + \
[request.url]
redirected.meta['priority'] = redirected.meta[
'priority'] + self.priority_adjust
self.logger.debug("Redirecting %s to %s from %s for %s times " %
(reason, redirected.url, request.url,
redirected.meta.get("redirect_times")))
return redirected
else:
self.logger.info("Discarding %s: max redirections reached" %
request.url)
# 错误信息记录出错的url ，而不是最初的url
# request.meta["url"] = request.url
if request.meta.get("callback") == "parse":
# 对于分类页失败，总数+1
self.crawler.stats.inc_total_pages(
crawlid=request.meta['crawlid'])
self.logger.error(
" in redicrect request error to failed pages url:%s, exception:%s, meta:%s"
% (request.url, reason, request.meta))
raise IgnoreRequest("max redirections reached:%s" % reason)
def process_request_2(self, rp, request, spider):
if rp is not None and not rp.can_fetch(to_native_str(self._useragent),
request.url):
logger.debug("Forbidden by robots.txt: %(request)s",
{'request': request},
extra={'spider': spider})
raise IgnoreRequest()
def _redirect(self, redirected, request, spider, reason):
ttl = request.meta.setdefault("redirect_ttl", self.max_redirect_times)
redirects = request.meta.get("redirect_times", 0) + 1
if ttl and redirects <= self.max_redirect_times:
redirected.meta["redirect_times"] = redirects
redirected.meta["redirect_ttl"] = ttl - 1
redirected.meta["redirect_urls"] = request.meta.get(
"redirect_urls", []) + [request.url]
redirected.meta["redirect_reasons"] = request.meta.get(
"redirect_reasons", []) + [reason]
redirected.dont_filter = request.dont_filter
redirected.priority = request.priority + self.priority_adjust
logger.debug(
"Redirecting (%(reason)s) to %(redirected)s from %(request)s",
{
"reason": reason,
"redirected": redirected,
"request": request
},
extra={"spider": spider},
)
return redirected
else:
logger.debug(
"Discarding %(request)s: max redirections reached",
{"request": request},
extra={"spider": spider},
)
raise IgnoreRequest("max redirections reached")
def process_request(self, request, spider):
if spider.use_selenium():
driver = SeleniumDriver(
request.meta.get('proxy', None),
request.meta['site_settings'].headless
).driver
cookies = request.meta['site_settings'].cookies
if len(cookies) >= 1:
# Selenium can only add cookies to
# the domain that it is already on
driver.get(request.url)
driver.delete_all_cookies()
for cookie in cookies:
driver.add_cookie(cookie)
try:
driver.get(request.url)
except TimeoutException:
raise IgnoreRequest()
self._wait_for_page(driver, spider, request)
return HtmlResponse(
driver.current_url,
body=driver.page_source,
encoding='UTF-8',
request=request
)
def process_response(self, request, response, spider):
# If we hit an ignorable error (eg. "payment required") then ignore the request
if response.status in self.ignore_http_codes:
raise IgnoreRequest(
"Skipping page which returned a status code that we ignore.")
# If we hit a 'service unavailable' error then increase the delay
if response.status in self.delay_http_codes:
self.delay_interval += self.delay_increment
spider.logger.info(
"Too many requests - server returned an error (code {}). "
"Adding {:.2f}s delay to future requests. "
"Current delay interval is {:.2f}s".format(
response.status, self.delay_increment,
self.delay_interval))
self.num_responses = 0
# If we manage to hit 'num_responses_threshold' responses in a row
# without problems then reduce the delay
else:
self.num_responses += 1
if self.delay_interval and self.num_responses >= self.num_responses_threshold:
self.delay_interval = max(
self.delay_interval - self.delay_increment, 0)
spider.logger.info(
"Made {} requests without a server error. "
"Reducing delay for future requests by {:.2f}s. "
"Current delay interval is {:.2f}s".format(
self.num_responses, self.delay_increment,
self.delay_interval))
self.num_responses = 0
# Wait if the delay is non-zero
if self.delay_interval:
time.sleep(self.delay_interval)
return super().process_response(request, response, spider)
def process_request(self, request, spider):
# print(request.url)
if len(self.crawled_urls) % 100 == 0:
print("Crawled sets: ", len(self.crawled_urls))
if request.url in self.crawled_urls:
print("Duplicate request", request.url)
raise IgnoreRequest()
elif any(x in request.url for x in self.deny_url_contains):
raise IgnoreRequest()
else:
self.crawled_urls.add(request.url)
return None
def process_request(self, request, spider):
if request.meta.get('captcha_request', False):
return
if self.paused:
self.queue.append((request, spider))
raise IgnoreRequest('Crawling paused, because CAPTCHA is '
'being solved')
def process_response(self, request, response, spider):
# 处理下载完成的response
# 排除状态码不是304的所有以3为开头的响应
http_code = response.status
if http_code // 100 == 2:
global count
count = 0
return response
if http_code // 100 == 3 and http_code != 304:
# 获取重定向的url
# url = response.headers['location']
# domain = urlparse.urlparse(url).netloc
# 判断重定向的url的domain是否在allowed_domains中
# if domain in spider.allowed_domains:
# return Request(url=url, meta=request.meta)
# else:
count
if count == 1:
sendMessage_warning()
# print count
count += 1
#把request返回到下载器
return request.replace(dont_filter=True)
if http_code // 100 == 4:
# 需要注意403不是响应错误，是无权访问
raise IgnoreRequest(u'404')
if http_code // 100 == 5:
return request.replace(dont_filter=True)
def process_request(self, request, spider):
url = request.url
key = hashlib.md5(url).hexdigest()
info = self.mongo.find_one({'key': key})
if info:
logger.warn("ingore repeat url: %s" % request.url)
raise IgnoreRequest("ingore repeat url: %s" % request.url)
def process_request(self, request, spider: CollectAnnotableUrlsSpider):
parsed_url = urlparse(request.url)
domain = parsed_url.netloc
domain_without_www = domain.replace('www.', '')
if domain_without_www in self.limit_per_domain:
max_visits_domain = self.limit_per_domain[
domain_without_www] * MAX_VISITED_REQUIRED_MATCHED_RATIO
limit_by_visits_reached = self.counter_visited.get(
domain_without_www, 0) >= max_visits_domain
limit_by_matches_reached = self.counter_matched.get(
domain_without_www,
0) >= self.limit_per_domain[domain_without_www]
if limit_by_visits_reached or limit_by_matches_reached:
spider.logger.info(
f'process_request() filtering request for domain {domain_without_www}: '
f'visited: {self.counter_visited[domain_without_www]}, '
f'matched: {self.counter_matched[domain_without_www]}')
raise IgnoreRequest()
spider.logger.info(
f'process_request() accepting request for domain {domain_without_www}: '
f'visited: {self.counter_visited[domain_without_www]}, '
f'matched: {self.counter_matched[domain_without_www]}')
return None
def process_request(self, request, spider):
if not request.url:
return None
channel_id = request.meta.get('channel_id', 0)
if is_dup_detail(request.url, spider.name, channel_id):
raise IgnoreRequest("Spider: %s, DeDuplicationRequest: %s" %
(spider.name, request.url))
