关于python：请求在连续发送多个请求时停止

Requests stops when multiple requests sent in a row

我正在使用scrapy和python请求解析在线商店，在我得到所有信息之后我再提出一个请求通过python请求获取数量，并且几分钟之后蜘蛛停止工作
我不知道造成麻烦的是什么。有什么建议？

Scrapy日志：

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2014-05-08 15:27:57+0300 [scrapy] DEBUG: Start adding sku1270594 to a cart.
INFO:requests.packages.urllib3.connectionpool:Starting new HTTP connection (1): www.sds.com.au
DEBUG:requests.packages.urllib3.connectionpool:"GET /product/trefoil-tee-by-adidas-in-black-camo-grey HTTP/1.1" 200 20223
INFO:requests.packages.urllib3.connectionpool:Starting new HTTP connection (1): www.sds.com.au
DEBUG:requests.packages.urllib3.connectionpool:"POST /common/ajaxResponse.jsp;jsessionid=34E95C7662D0F5084FF971CC5693E6E8.store-node1?_DARGS=/browse/product.jsp.addToCartForm HTTP/1.1" 200 146
2014-05-08 15:27:59+0300 [scrapy] DEBUG: End adding sku1270594 to a cart.
2014-05-08 15:27:59+0300 [scrapy] DEBUG: Success. quantity of sku1270594 is 16.
2014-05-08 15:28:00+0300 [sds] DEBUG: Updating product info sku1270594
2014-05-08 15:28:00+0300 [sds] DEBUG: Added new price sku1270594
2014-05-08 15:28:00+0300 [sds] DEBUG: Scraped from <200 http://www.sds.com.au/product/trefoil-tee-by-adidas-in-black-camo-grey>
2014-05-08 15:28:00+0300 [sds] DEBUG: Updating product info sku901159
2014-05-08 15:28:00+0300 [sds] DEBUG: Added new price sku901159
2014-05-08 15:28:00+0300 [sds] DEBUG: Scraped from <200 http://www.sds.com.au/product/two-palm-tee-by-folke-in-chalk>
2014-05-08 15:28:00+0300 [sds] DEBUG: Updating product info sku901163
2014-05-08 15:28:00+0300 [sds] DEBUG: Added new price sku901163
2014-05-08 15:28:00+0300 [sds] DEBUG: Scraped from <200 http://www.sds.com.au/product/two-palm-tee-by-folke-in-chalk>
2014-05-08 15:28:00+0300 [scrapy] DEBUG: Start adding sku1270591 to a cart.
INFO:requests.packages.urllib3.connectionpool:Starting new HTTP connection (1): www.sds.com.au
DEBUG:requests.packages.urllib3.connectionpool:"GET /product/trefoil-tee-by-adidas-in-black-camo-grey HTTP/1.1" 200 20225
INFO:requests.packages.urllib3.connectionpool:Starting new HTTP connection (1): www.sds.com.au

就是这样。控制台中没有任何事情发生了。
这是获取数量的函数：

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def get_qty(self, item):
r = requests.get(item['url'])
cookie_cart_user = dict(r.cookies)
sel = Selector(text=r.text, type="html")
session = sel.xpath('//input[@name="_dynSessConf"]/@value').extract()[0]
# print session
# print cookie_cart_user
add_to_cart_url = 'http://www.sds.com.au/common/ajaxResponse.jsp;jsessionid=%s?_DARGS=/browse/product.jsp.addToCartForm' % cookie_cart_user['JSESSIONID']
# ok, so we're adding one item
log.msg("Adding %s to a cart." % item['internal_id'], log.DEBUG)
headers = {
'User-Agent': USER_AGENT,
'Accept': 'application/json, text/javascript, */*; q=0.01',
'Connection': 'close',
}
s = requests.session()
s.keep_alive = False
r = requests.post(add_to_cart_url,
data=self.generate_form_data(item, 10000, session),
cookies=cookie_cart_user,
headers=headers,
timeout=10)
response = r.json()
r.close()
try:
quantity = int(re.findall(u'\d+', response['formErrors'][0]['errorMessage'])[0])
log.msg("Success. quantity of %s is %s." % (item['internal_id'], quantity), log.DEBUG)
return quantity
except Exception, e:
log.msg('Error getting data-cart-item on product %s. Error: %s' % (item['internal_id'], str(e)), log.ERROR)
with open("log/%s.html" % item['internal_id'],"w") as myfile:
myfile.write('%s' % r.text.encode('utf-8'))

相关讨论

好吧，Jan Vlcinsky建议深入记录请求，经过一些挖掘后我决定重新组织我的代码，这给了我正确的答案，现在一切都很好。

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def get_qty(self, item):
log.msg("Start adding %s to a cart." % item['internal_id'], log.DEBUG)
logging.basicConfig(level=logging.DEBUG)
sess = requests.Session()
sess.keep_alive = False
adapter = HTTPAdapter(max_retries=50)
sess.mount('http://', adapter)
r = sess.get(item['url'])
cookie_cart_user = dict(r.cookies)
sel = Selector(text=r.text, type="html")
session = sel.xpath('//input[@name="_dynSessConf"]/@value').extract()[0]
add_to_cart_url = 'http://www.sds.com.au/common/ajaxResponse.jsp;jsessionid=%s?_DARGS=/browse/product.jsp.addToCartForm' % cookie_cart_user['JSESSIONID']
headers = {
'User-Agent': USER_AGENT,
'Accept': 'application/json, text/javascript, */*; q=0.01',
}
r = sess.post(add_to_cart_url,
data=self.generate_form_data(item, 10000, session),
cookies=cookie_cart_user,
headers=headers,
)
log.msg("End adding %s to a cart." % item['internal_id'], log.DEBUG)
try:
response = r.json()
r.close()
quantity = int(re.findall(u'\d+', response['formErrors'][0]['errorMessage'])[0])
log.msg("Success. quantity of %s is %s." % (item['internal_id'], quantity), log.DEBUG)
return quantity
except Exception, e:
log.msg('Error getting data-cart-item on product %s. Error: %s' % (item['internal_id'], str(e)), log.ERROR)
with open("log/%s.html" % item['internal_id'],"w") as myfile:
myfile.write('%s' % r.text.encode('utf-8'))

现在，如果发生错误，日志说

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2014-05-08 16:00:10+0300 [scrapy] DEBUG: Start adding sku1210352 to a cart.
INFO:requests.packages.urllib3.connectionpool:Starting new HTTP connection (1): www.sds.com.au
WARNING:requests.packages.urllib3.connectionpool:Retrying (50 attempts remain) after connection broken by 'error(60, 'Operation timed out')': /product/startlet-gilet-fleece-jacket-by-zoo-york-in-black
INFO:requests.packages.urllib3.connectionpool:Starting new HTTP connection (2): www.sds.com.au
DEBUG:requests.packages.urllib3.connectionpool:"GET /product/startlet-gilet-fleece-jacket-by-zoo-york-in-black HTTP/1.1" 200 20278
DEBUG:requests.packages.urllib3.connectionpool:"POST /common/ajaxResponse.jsp;jsessionid=EEA02CE768B288DD302896F6A8C4780F.store-node2?_DARGS=/browse/product.jsp.addToCartForm HTTP/1.1" 200 145
2014-05-08 16:01:14+0300 [scrapy] DEBUG: End adding sku1210352 to a cart.

在那之后它就会重新开始，并继续发生任何事情