def developParser():
'''
规则开发例子
'''
test_parser = {
'webname': '佛山市人民政府门户网站',
'urls': ['http://www.foshan.gov.cn/'],
'type': 'regular',
'pattern':
r"<li class=[\s\S]*?href='([\s\S]*?)' title='([\s\S]*?)'[\s\S]*?([0-9]{4}-[0-9]{2}-[0-9]{2})",
'position': {
'title': 1,
'href': 0,
'time': 2
}
}
html_parser = Html_Parser()
r = Html_Downloader.download(test_parser['urls'][0])
print(r)
info_list, info_node = html_parser.parse(r, test_parser)
for infoList in info_list:
print(infoList)
print('=============')
for infoNode in info_node:
print(infoNode)
def crawl(self, parser):
"""
爬取
:param parser:
:return:
"""
html_parser = Html_Parser()
for url in parser['urls']:
response = Html_Downloader.download(url)
if response is not None:
proxy_list = html_parser.parse(response, parser)
if proxy_list is not None:
# 检查爬取到的proxy
count, new = 0, 0
for proxy in proxy_list:
count += 1
proxy_str = '%s:%s' % (proxy['ip'], proxy['port'])
if proxy_str not in self.proxies_set:
self.proxies_set.add(proxy_str)
new += 1
self.sqlhelper.insert(proxy)
self.url_count += 1
logger.info(
'%d/%d -- <%s> 获取%d, 未记录的%d' %
(self.url_count, self.url_total, url, count, new))
else:
self.url_count += 1
logger.warning('%d/%d -- <%s> 解析数据错误' %
(self.url_count, self.url_total, url))
else:
self.url_count += 1
logger.warning('%d/%d -- <%s> 下载页面错误' %
(self.url_count, self.url_total, url))
def crawl(self, parser):
proxys = []
html_parser = Html_Parser()
for url in parser['urls']:
response = Html_Downloader.download(url)
if response != None:
proxylist = html_parser.parse(response, parser)
if proxylist != None:
proxys.extend(proxylist)
return proxys
def crawl(self, parser):
html_parser = Html_Parser()
for url in parser['urls']:
response = Html_Downloader.download(url)
if response is not None:
proxylist = html_parser.parse(response, parser)
if proxylist is not None:
for proxy in proxylist:
proxy_str = '%s:%s' % (proxy['ip'], proxy['port'])
if proxy_str not in self.proxies:
self.proxies.add(proxy_str)
self.queue.put(proxy)
def crawl(self, parser):
html_parser = Html_Parser()
for url in parser['urls']:
response = Html_Downloader.download(url)
if response is not None:
proxylist = html_parser.parse(response, parser)
if proxylist is not None:
for proxy in proxylist:
proxy_str = '%s:%s' % (proxy['ip'], proxy['port'])
if proxy_str not in self.proxies:
self.proxies.add(proxy_str)
while True:
if self.queue.full():
time.sleep(0.1)
else:
self.queue.put(proxy)
break
def crawl(self, parser):
html_parser = Html_Parser()
for url in parser['urls']:
print('crawl的URL是：', url)
response = Html_Downloader.download(url)
if response is not None:
proxylist = html_parser.parse(response, parser)
if proxylist is not None:
for proxy in proxylist:
proxy_str = '%s:%s' % (proxy['ip'], proxy['port'])
if proxy_str not in self.proxies:
# self.proxies.add(proxy_str) #感觉没作用
# print('新爬取得代理IP')
# print(proxy)
while True:
if self.queue.full():
time.sleep(0.1)
else:
# print('将新的爬取到的代理IP放入队列')
self.queue.put(proxy)
break