def go_yahoo():
'''抓取雅虎的所有公司'''
baseCrawl = BaseCrawl()
baseExtract = BaseExtract()
cxn_db = None
try:
cxn_db = get_cxn_db()
cur_db = cxn_db.cursor()
in_sql = """ insert into yahoo_comps (code_name,crawl_time,return_type,add_time,count)
values (%s,now(),%s,now(),1)
on duplicate key update crawl_time = now(),return_type = %s,count=count+1 """
code_names = get_comps()
logger.info("number of companys is %d"%len(code_names))
for code in code_names:
logger.debug("crawl %s, start............ "%code)
status,headlines_links = go_crawl_headlines(code,baseCrawl,baseExtract)
cur_db.execute(in_sql,(code,status,status))
if status == 0 and len(headlines_links) > 0:
extract_headlines_news(code,headlines_links,cur_db)
logger.debug("crawl %s, end.............. "%code)
except:
logger.error("crawl_page failed ,Error:%s" % traceback.format_exc())
finally:
if cxn_db:
cxn_db.close()
def go_yahoo():
'''抓取雅虎的所有公司'''
baseCrawl = BaseCrawl()
baseExtract = BaseExtract()
cxn_db = None
try:
cxn_db = get_cxn_db()
cur_db = cxn_db.cursor()
in_sql = """ insert into yahoo_comps (code_name,crawl_time,return_type,add_time,count)
values (%s,now(),%s,now(),1)
on duplicate key update crawl_time = now(),return_type = %s,count=count+1 """
code_names = get_comps()
logger.info("number of companys is %d" % len(code_names))
for code in code_names:
logger.debug("crawl %s, start............ " % code)
status, headlines_links = go_crawl_headlines(
code, baseCrawl, baseExtract)
cur_db.execute(in_sql, (code, status, status))
if status == 0 and len(headlines_links) > 0:
extract_headlines_news(code, headlines_links, cur_db)
logger.debug("crawl %s, end.............. " % code)
except:
logger.error("crawl_page failed ,Error:%s" % traceback.format_exc())
finally:
if cxn_db:
cxn_db.close()
def go_google():
logger.info("crawl google finance start......")
source_type = SOURCE_TYPE_GOOGLE
code_names_file = 'code_name_vol.lst'
url_prefix = 'https://www.google.com/finance/company_news?q='
req_referer = 'https://www.google.com/finance'
finance_home = ['https://www.google.com/finance','https://news.google.com/news/section?ned=us&topic=b']
extracteNewsurls = GoogleExtracteNewsurls()
go_newsextrac(source_type,code_names_file,url_prefix,req_referer,finance_home,extracteNewsurls)
logger.info("crawl google finance end......")
def go_yahoo():
logger.info("crawl yahoo finance start......")
source_type = SOURCE_TYPE_YAHOO
code_names_file = 'code_name_vol.lst'
url_prefix = 'http://finance.yahoo.com/q/h?s='
req_referer = 'http://finance.yahoo.com/'
finance_homes = ['http://finance.yahoo.com/']
extracteNewsurls = YahooExtracteNewsurls()
go_newsextrac(source_type,code_names_file,url_prefix,req_referer,finance_homes,extracteNewsurls)
logger.info("crawl yahoo finance end......")
def go_newsextrac(source_type, code_names_file, url_prefix, req_referer,
finance_homes, extracteNewsurls):
'''抓取所有的新闻链接、抽取并存储
@param source_type: 抓取来源：比如yahoo、google等
@param code_names_file: 公司上市代码列表
@param url_prefix: 拼接上市公司新闻url的前缀
@param req_referer: 抓取前连，防封禁
@param finance_homes: 财经频道首页地址
@param extracteNewsurls: 个性化的抽取对象
'''
baseCrawl = BaseCrawl()
baseExtract = BaseExtract()
cxn_db = None
try:
cxn_db = get_cxn_db()
cur_db = cxn_db.cursor()
#构造一个boolm filter
initUrlsBloomFilter(cur_db, source_type)
in_sql = """ insert into com_news_extract_state (url,code_name,crawl_time,return_type,add_time,crawl_count,source_type)
values (%s,%s,now(),%s,now(),1,%s)
on duplicate key update crawl_time = now(),return_type = %s,crawl_count=crawl_count+1,source_type = %s """
news_chanel_urls = get_compnewsurls(code_names_file, url_prefix,
finance_homes)
logger.info("number of companys is %d" % len(news_chanel_urls))
for code, news_chanel_url in news_chanel_urls:
logger.debug("crawl %s, start............ " % news_chanel_url)
is_finance_home = False
if code == FINANCE_HOME:
is_finance_home = True
status, news_links = extracteNewsurls.extracte(news_chanel_url,
is_finance_home,
baseCrawl,
baseExtract,
req_referer,
try_times=1)
cur_db.execute(in_sql, (news_chanel_url, code, status, source_type,
status, source_type))
if status == 0 and len(news_links) > 0:
extract_news(code, news_links, source_type, cur_db)
logger.debug("crawl %s, end.............. " % code)
logger.info("number of news url is %s" % NEWS_URL_EXTRACTE)
except:
logger.error("crawl_page failed ,Error:%s" % traceback.format_exc())
finally:
if cxn_db:
cxn_db.close()
def go_yahoo():
logger.info("crawl yahoo finance start......")
source_type = SOURCE_TYPE_YAHOO
code_names_file = 'code_name_vol.lst'
url_prefix = 'http://finance.yahoo.com/q/h?s='
req_referer = 'http://finance.yahoo.com/'
finance_homes = ['http://finance.yahoo.com/']
extracteNewsurls = YahooExtracteNewsurls()
go_newsextrac(source_type, code_names_file, url_prefix, req_referer,
finance_homes, extracteNewsurls)
logger.info("crawl yahoo finance end......")
def go_google():
logger.info("crawl google finance start......")
source_type = SOURCE_TYPE_GOOGLE
code_names_file = 'code_name_vol.lst'
url_prefix = 'https://www.google.com/finance/company_news?q='
req_referer = 'https://www.google.com/finance'
finance_home = [
'https://www.google.com/finance',
'https://news.google.com/news/section?ned=us&topic=b'
]
extracteNewsurls = GoogleExtracteNewsurls()
go_newsextrac(source_type, code_names_file, url_prefix, req_referer,
finance_home, extracteNewsurls)
logger.info("crawl google finance end......")
def go_newsextrac(source_type,code_names_file,url_prefix,req_referer,finance_homes,extracteNewsurls):
'''抓取所有的新闻链接、抽取并存储
@param source_type: 抓取来源：比如yahoo、google等
@param code_names_file: 公司上市代码列表
@param url_prefix: 拼接上市公司新闻url的前缀
@param req_referer: 抓取前连，防封禁
@param finance_homes: 财经频道首页地址
@param extracteNewsurls: 个性化的抽取对象
'''
baseCrawl = BaseCrawl()
baseExtract = BaseExtract()
cxn_db = None
try:
cxn_db = get_cxn_db()
cur_db = cxn_db.cursor()
#构造一个boolm filter
initUrlsBloomFilter(cur_db,source_type)
in_sql = """ insert into com_news_extract_state (url,code_name,crawl_time,return_type,add_time,crawl_count,source_type)
values (%s,%s,now(),%s,now(),1,%s)
on duplicate key update crawl_time = now(),return_type = %s,crawl_count=crawl_count+1,source_type = %s """
news_chanel_urls = get_compnewsurls(code_names_file,url_prefix,finance_homes)
logger.info("number of companys is %d"%len(news_chanel_urls))
for code,news_chanel_url in news_chanel_urls:
logger.debug("crawl %s, start............ "%news_chanel_url)
is_finance_home = False
if code == FINANCE_HOME:
is_finance_home = True
status,news_links = extracteNewsurls.extracte(news_chanel_url,is_finance_home,baseCrawl,baseExtract,req_referer,try_times = 1)
cur_db.execute(in_sql,(news_chanel_url,code,status,source_type,status,source_type))
if status == 0 and len(news_links) > 0:
extract_news(code,news_links,source_type,cur_db)
logger.debug("crawl %s, end.............. "%code)
logger.info("number of news url is %s"%NEWS_URL_EXTRACTE)
except:
logger.error("crawl_page failed ,Error:%s" % traceback.format_exc())
finally:
if cxn_db:
cxn_db.close()
def extracte(self,
news_chanel_url,
is_finance_home,
baseCrawl,
baseExtract,
req_referer,
try_times=1):
'''抽取频道首页或者每个公司新闻频道中得所有urls,
每个页面最多抓取 MAX_TRY_TIMES+1 次
@param news_chanel_url: 抓取的链接，
@param is_finance_home:是否是finance_home，可能需要单独处理
@param baseCrawl: 封装的抓取基类
@param baseExtract: 封装的抽取基类
@param try_times: 重试次数
@return: 抓取状态，抽取的新闻链接
'''
logger.info("crawl %s, %d time" % (news_chanel_url, try_times))
time.sleep(IDEL_TIME * (try_times - 1))
status = 2
html = ''
try:
status, html = baseCrawl.crawl_page(news_chanel_url,
req_referer=req_referer)
#返回频道下面所有新闻链接
news_links = []
if status == 200:
status = 0
logger.info("crawl %s, success " % news_chanel_url)
news_links = self.extracteUrls(baseExtract, html,
is_finance_home)
elif status in [301, 302]:
status = 1
logger.info("crawl %s, no data,fail" % news_chanel_url)
else:
if try_times <= MAX_TRY_TIMES:
return self.extracte(news_chanel_url, is_finance_home,
baseCrawl, baseExtract, req_referer,
try_times + 1)
else:
status = 2
logger.error("crawl %s, %d time,fail" %
(news_chanel_url, try_times))
except:
logger.error("crawl %s, failed ,Error:%s" %
(news_chanel_url, traceback.format_exc()))
return status, news_links
def go_crawl_headlines(code_name, baseCrawl, baseExtract, try_times=1):
'''雅虎金融每个公司页面的新闻抓取的抓取,每个页面最多抓取 MAX_TRY_TIMES+1 次
@param req_url: 抓取的链接，形如：http://finance.yahoo.com/q/h?s=bidu
@param baseCrawl: 封装的抓取基类
@param baseExtract: 封装的抽取基类
@param try_times: 重试次数
@return: 抓取状态，抽取的新闻链接，
'''
req_url = 'http://finance.yahoo.com/q/h?s=%s' % code_name
logger.info("crawl %s, %d time" % (req_url, try_times))
time.sleep(IDEL_TIME * try_times)
status, html = baseCrawl.crawl_page(req_url, req_referer=REQ_REFER)
#返回新闻链接
headlines_links = []
if status == 200:
status = 0
logger.info("crawl %s, success " % req_url)
beautifulSoup = baseExtract.get_bs(html)
content = beautifulSoup.find(
'div', {'class': 'mod yfi_quote_headline withsky'})
if content is None:
logger.info("extract %s is none " % req_url)
else:
for link in beautifulSoup.findAll('a'):
headlines_links.append(link.get('href'))
elif status in [301, 302]:
status = 1
logger.info("crawl %s, no data,fail" % req_url)
else:
if try_times <= MAX_TRY_TIMES:
return go_crawl_headlines(req_url, baseCrawl, baseExtract,
try_times + 1)
else:
status = 2
logger.error("crawl %s, %d time,fail" % (req_url, try_times))
return status, headlines_links
def go_crawl_headlines(code_name,baseCrawl,baseExtract,try_times = 1):
'''雅虎金融每个公司页面的新闻抓取的抓取,每个页面最多抓取 MAX_TRY_TIMES+1 次
@param req_url: 抓取的链接，形如：http://finance.yahoo.com/q/h?s=bidu
@param baseCrawl: 封装的抓取基类
@param baseExtract: 封装的抽取基类
@param try_times: 重试次数
@return: 抓取状态，抽取的新闻链接，
'''
req_url = 'http://finance.yahoo.com/q/h?s=%s'%code_name
logger.info("crawl %s, %d time"%(req_url,try_times))
time.sleep(IDEL_TIME * try_times)
status,html = baseCrawl.crawl_page(req_url, req_referer = REQ_REFER)
#返回新闻链接
headlines_links = []
if status == 200:
status = 0
logger.info("crawl %s, success "%req_url)
beautifulSoup = baseExtract.get_bs(html)
content = beautifulSoup.find('div', {'class':'mod yfi_quote_headline withsky'})
if content is None:
logger.info("extract %s is none "%req_url)
else:
for link in beautifulSoup.findAll('a'):
headlines_links.append(link.get('href'))
elif status in [301,302]:
status = 1
logger.info("crawl %s, no data,fail"%req_url)
else:
if try_times <= MAX_TRY_TIMES:
return go_crawl_headlines(req_url,baseCrawl,baseExtract,try_times+1)
else:
status = 2
logger.error("crawl %s, %d time,fail"%(req_url,try_times))
return status,headlines_links
def extracte(self,news_chanel_url,is_finance_home,baseCrawl,baseExtract,req_referer,try_times = 1):
'''抽取频道首页或者每个公司新闻频道中得所有urls,
每个页面最多抓取 MAX_TRY_TIMES+1 次
@param news_chanel_url: 抓取的链接，
@param is_finance_home:是否是finance_home，可能需要单独处理
@param baseCrawl: 封装的抓取基类
@param baseExtract: 封装的抽取基类
@param try_times: 重试次数
@return: 抓取状态，抽取的新闻链接
'''
logger.info("crawl %s, %d time"%(news_chanel_url,try_times))
time.sleep(IDEL_TIME * (try_times-1))
status = 2
html = ''
try:
status,html = baseCrawl.crawl_page(news_chanel_url, req_referer = req_referer)
#返回频道下面所有新闻链接
news_links = []
if status == 200:
status = 0
logger.info("crawl %s, success "%news_chanel_url)
news_links = self.extracteUrls(baseExtract,html, is_finance_home)
elif status in [301,302]:
status = 1
logger.info("crawl %s, no data,fail"%news_chanel_url)
else:
if try_times <= MAX_TRY_TIMES:
return self.extracte(news_chanel_url,is_finance_home, baseCrawl, baseExtract, req_referer, try_times+1)
else:
status = 2
logger.error("crawl %s, %d time,fail"%(news_chanel_url,try_times))
except:
logger.error("crawl %s, failed ,Error:%s" % (news_chanel_url,traceback.format_exc()))
return status,news_links
