def downloadFreshDocuments ( ):
"""
Based on the media items in data/item directory, download 10 webpages
with a query from the first line in each item file. Keep querying until
10 pages have been successfullly download. Sleep for 60 seconds before
requesting url results from the metaSearch engine. This throttling was
successful with Google's ajax api on 2/10/15.
Once pages are downloaded, parse, stem, and store them with the
storePageAndHeader function.
"""
for query, itemName, itemType in mediaItems( 'data/item' ):
count = 10 - len(db.lookupUrlsForItem( itemName, itemType ))
start = 0
while ( count > 0 ):
time.sleep( 60 )
urlList, start = metaSearch.executeQuery( db, query, count, start )
for url in urlList:
webPage, headers = spider.fetch( url )
if ( webPage ):
storePageAndHeader( url, webPage, headers, itemName, itemType )
count -= 1
if ( count <= 0 ):
break
def jd_save2db(data, opt):
skus = data['skuid']
url = 'http://p.3.cn/prices/mgets?skuIds=J_%s&type=1' % skus #(',J_'.join(skus))
o = {'referer': opt.url}
# print opt
resp = spider.fetch(url, o)
jscode = resp.text #[{'p': '769.00', 'm': '859.00', 'id': 'J_954086'}]
obj = Global()
info = None
with PyV8.JSContext(obj) as ctx:
c = ctx.eval(jscode)
info = PyV8.convert(c)
# print info
print '++++++++++++++++++++++++++++++++++++++++++++++++++++++++'
data['price'] = info[0]['p']
data['old_price'] = info[0]['m']
data['title'] = data['name'].decode('utf8')
save2db(data, opt)
def cache(self):
"""Fetches photo via HTTP and caches it."""
try:
self.logger.info("Fetching and caching photo '%s'" % self.title)
content_types = [
'image/jpeg',
'image/gif',
'image/png'
]
resp, content = spider.fetch(self.photo_url, valid_content_types=content_types)
self.logger.debug('HTTP Status: %s' % str(resp.status))
if resp.status == 200:
self.logger.debug('Saving photo to cache')
f = open(self._get_cached_original_fn(), 'w')
f.write(content)
f.close()
except:
self.logger.exception("Problem caching photo!")
from spider import fetch
if __name__ == '__main__':
fetch()
def parse(self):
"""Fetches Tumblr API data and parses it."""
self.logger.info("Fetching API data at '%s'" % self.api_url)
self.http_response, self.http_content = spider.fetch(self.api_url)
self.logger.info("Parsing API data for entries...")
t = tumblr.parse(self.api_url)
for post in t.posts:
try:
if post.type == 'regular':
self.logger.info("Tumblr post type: regular")
e = Post()
e.title = post.title
e.summary = post.content
e.content = post.content
elif post.type == 'link':
if 'link' in self.excluded_types:
self.logger.debug("Skipping Tumblr link")
continue
else:
self.logger.info("Tumblr post type: link")
e = Link()
e.title = post.title
e.summary = post.content
e.content = post.content
e.url = post.related
e.comments = post.url
elif post.type == 'quote':
self.logger.info("Tumblr post type: quote")
e = Quote()
e.summary = post.content
# Chop the smart quotes that Tumblr automatically
# adds to to a quote
e.summary = e.summary.lstrip("“").rstrip("”")
e.content = e.summary
# Get the quote's citation, and, if possible its source
e.citation = post.source
try:
soup = BeautifulSoup(e.citation)
e.citation_url = soup.find('a').get('href')
e.via = e.citation_url
except AttributeError:
e.citation_url = None
elif post.type == 'photo':
self.logger.info("Tumblr post type: photo")
e = Photo()
e.photo_type = 'tumblr'
e.title = ''
e.summary = post.caption
#e.content = e.summary
# post.urls is a dictionary of photo URLs keyed by size.
# Let's get the big one.
e.photo_url = post.urls['500']
e.cached_url = config.IMAGES_URL + '/' + e._get_cached_original_shortname()
self.logger.debug("Tumblr photo URL: '%s'" % e.photo_url)
e.cache()
e.set_dimensions()
e.set_content()
# Conversation, Video, and Audio post types aren't
# going to be implemented for a while
elif post.type == 'conversation':
# TODO: Support Tumblr conversations
self.logger.info("Tumblr post type: conversation")
continue
#e = Conversation()
elif post.type == 'video':
# TODO: Support Tumblr videos
self.logger.info("Tumblr post type: video")
continue
#e = Video()
elif post.type == 'audio':
# TODO: Support Tumblr audio
self.logger.info("Tumblr post type: audio")
continue
#e = Audio()
e.source.name = self.name
e.source.url = self.url
if e.url == '':
e.url = post.url
e.author = self.owner
e.date = post.date
e.date_parsed = parse_date(post.date)
self.logger.debug("Tumblr post date: %s" % e.date_as_string(e.date_parsed))
self.logger.info("Entry title: '%s'" % e.title)
self.logger.debug("Entry URL: '%s'" % e.url)
self.entries.append(e)
except AttributeError:
# FIXME: Why is this exception handler here???
pass
def parse(self):
"""Fetches the contents of the weblog's feed and parses it.
Each entry in the feed becomes an Entry object, and each entry
attribute is normalized."""
self.logger.info("Fetching feed '%s'" % self.feed_url)
self.http_response, self.http_content = spider.fetch(self.feed_url)
self.logger.info("Parsing feed for entries...")
feed_data = feedparser.parse(self.feed_url)
self.id = feed_data.feed.get("id", "")
self.name = feed_data.feed.get("title", self.name)
self.generator = feed_data.feed.get("generator", None)
self.url = feed_data.feed.get("link", self.url)
self.logger.debug("Weblog URL: '%s'" % self.url)
self.tagline = feed_data.feed.get("tagline", "")
self.updated = feed_data.feed.get("updated", None)
self.updated_parsed = feed_data.feed.get("updated_parsed", None)
self.rights = feed_data.feed.get("rights", None)
self.atom = self.is_atom(feed_data.version)
for entry in feed_data.entries:
# This method will be inherited by all other feed-based
# sources; because we assume that the only difference between
# feeds of type Weblog, Linklog, and Commentlog is the
# presentation of their entries, instantiating the appropriate
# entry class here means that we don't have to write new
# parse() methods for Linklog and Commentlog.
if self.type == "linklog":
e = Link()
# NOTE: The following is a workaround for a feedparser bug.
# http://code.google.com/p/feedparser/issues/detail?id=129
if self.is_delicious():
self.atom = False
elif self.type == "commentlog":
e = Quote()
else:
e = Post()
e.source.name = self.name
e.source.url = self.url
e.atom = self.atom
e.title = entry.get("title", "")
self.logger.info("Entry title: '%s'" % e.title)
e.author = entry.get("author", self.owner)
try:
e.author_url = entry.author_detail["href"]
except (AttributeError, KeyError):
e.author_url = None
e.summary = entry.get("summary", "")
# Need to get 'content[x]["value"]', not just 'content',
# and we prefer something marked "text/html"
try:
html_types = ["text/html", "application/xhtml+xml", "application/xml", "text/xml", "text/plain"]
for content in entry["content"]:
if content["type"] in html_types:
e.content = content["value"]
continue
except (KeyError, IndexError, AttributeError):
e.content = e.summary
# Atom weblog feeds should used 'rel="related"' for
# the linked page, so need to make sure we get that link
# and not the 'alternate' or 'via' link.
e.url = entry.get("link", None)
try:
for link in entry.links:
if link["rel"] == "via":
e.via = link["href"]
break
else:
e.via = None
for link in entry.links:
if link["rel"] == "related":
e.url = link["href"]
break
else:
e.url = entry.link
except AttributeError:
# In rare cases, entry.links is not populated
pass
e.comments = entry.get("comments", None)
# 'alternate' represents the linklog entry itself,
# which is often a comments page
if self.type == "linklog":
e.comments = e.get_delicious_url()
if e.comments is None:
try:
for link in entry.links:
if link["rel"] == "alternate":
e.comments = link["href"]
except AttributeError:
# In rare cases, entry.links is not populated
pass
# Now, get tags/categories
try:
if len(entry.tags) > 0:
for tag in entry.tags:
e.tags.append(tag.term)
except AttributeError:
# No tags! Forget it.
pass
# Nix the comments property if it's the same link as the permalink
if e.url == e.comments:
e.comments = None
# Put together the Atom <source> info, if applicable
if e.atom:
e.atom_source = AtomSource()
try:
e.atom_source.id = self.id
e.atom_source.title = sanitize(self.name)
e.atom_source.url = self.url
e.atom_source.updated = self.updated
except AttributeError:
self.logger.exception("Trouble getting Atom source for '%s'!" % self.name)
e.atom_source = None
else:
e.atom_source = None
# DATES!
e.date = entry.get("date")
e.date_parsed = entry.get("date_parsed")
self.logger.debug("Entry date: %s" % e.date_as_string(e.date_parsed))
e.published = entry.get("published", e.date)
e.published_parsed = entry.get("published_parsed", e.date_parsed)
e.updated = entry.get("updated", e.date)
e.updated_parsed = entry.get("updated_parsed", e.date_parsed)
e.created = entry.get("created", e.date)
e.created_parsed = entry.get("created_parsed", e.date_parsed)
# Build GUID
# Use backup_id if feed doesn't provide one already
backup_id = e.get_tag_uri(e.date_parsed, e.url)
e.id = entry.get("id", backup_id)
# Done parsing this entry
self.entries.append(e)
def test_one():
import pdb
pdb.set_trace()
res = fetch(url)
doc = fromstring(d.text.decode('utf-8', errors='ignore'))
parse_category(doc)
def extract_product_detail(url, doc, res=''):
'''
desc:
通过详情页获取一系列信息,入库
'''
if not doc.xpath('//div[@class="breadcrumb"]'):
logger.info('extract_product_detail --- url %s %s' %
(url, u'全球购不处理!!!'))
return
if doc.xpath('//div[@class="breadcrumb"]//a/text()')[0] == u"首页":
logger.info('extract_product_detail --- url %s %s' %
(url, u'闪购页面暂时不处理!!!'))
return
_this_dao = Product.select().where(Product.purl == url).first()
if _this_dao:
logger.info('extract_product_detail --- product %s exist' % (url))
return
# pid
pid = re.search('http://item.jd.com/(?P<id>\d*).html',
url).groupdict()['id']
# product brand
brand = doc.xpath('//*[@id="parameter-brand"]/li/a[1]')[0].text_content()
# same detail page not contains brand img ,so set null
_brand_img = doc.xpath('//*[@id="extInfo"]/div[1]/a/img/@src')
if _brand_img:
brand_img = _brand_img[0]
brand_img = perfect_href(brand_img)
else:
brand_img = ''
# product img
imgs = doc.xpath('//div[@class="spec-items"]/ul/li/img/@src')
fix_img = lambda x: re.sub('/n5/', '/imgzone/', "http:" + x)
imgs = map(fix_img, imgs)
img_first = imgs.pop(0)
# pname
pname = doc.xpath('//div[@id="product-intro"]//div[@id="itemInfo"]//h1'
)[0].text_content()
# 价格
_price_url = "http://p.3.cn/prices/get?skuid=J_{pid}"
price = None
_price_res = fetch(_price_url.format(pid=pid))
if _price_res.status_code == 200:
price = json.loads(_price_res.text)[0]['p']
else:
raise ("Not Parse Price")
# 面包屑 == category
_cat_body = parse_category(url, doc, res)
if not ProductAndCategory.select().where(
ProductAndCategory.pid == pid).first():
_cat_body.update({'pid': int(pid)})
ProductAndCategory.create(**_cat_body)
data = {
'pid': pid,
'purl': url,
'pname': pname.encode('utf-8'),
'brand': brand.encode('utf-8'),
'brand_img': brand_img,
'product_img': img_first,
'price': price,
'extra': json.dumps({'img': imgs})
}
try:
Product.create(**data)
logger.info('product success save--- url: %s' % (url))
except IntegrityError:
logger.info('product faild repeat --- url: %s' % (url))
except Exception, e:
ex = traceback.format_exc()
logger.error('product faild exception --- url: %s\n %s' % (url, ex))
