查询阿里巴巴关键字排名

原创
2014/01/13 16:23
阅读数 329

记录下自己实现阿里巴巴关键词排名查询的主要代码及pyquery、urllib库的基础用法

  1. urllib 基础模块的应用,通过该类获取到url中的html文档信息,内部可以重写代理的获取方法

    <!-- lang: python -->

    class ProxyScrapy(object): def init(self): self.proxy_robot = ProxyRobot() self.current_proxy = None self.cookie = cookielib.CookieJar()

    def __builder_proxy_cookie_opener(self):
    cookie_handler = urllib2.HTTPCookieProcessor(self.cookie)
    handlers = [cookie_handler]

     if PROXY_ENABLE:
         self.current_proxy = ip_port = self.proxy_robot.get_random_proxy()
         proxy_handler = urllib2.ProxyHandler({'http': ip_port[7:]})
         handlers.append(proxy_handler)
    
     opener = urllib2.build_opener(*handlers)
     urllib2.install_opener(opener)
     return opener
    

    def get_html_body(self,url): opener = self.__builder_proxy_cookie_opener()

     request=urllib2.Request(url)
     #request.add_header("Accept-Encoding", "gzip,deflate,sdch")
     #request.add_header("Accept", "text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8")
     #request.add_header("Cache-Control", "no-cache")
     #request.add_header("Connection", "keep-alive")
    
     try:
         response = opener.open(request,timeout=2)
    
         http_code = response.getcode()
         if http_code == 200:
             if PROXY_ENABLE:
                 self.proxy_robot.handle_success_proxy(self.current_proxy)
             html = response.read()
             return html
         else:
             if PROXY_ENABLE:
                 self.proxy_robot.handle_double_proxy(self.current_proxy)
             return self.get_html_body(url)
     except Exception as inst:
         print inst,self.current_proxy
         self.proxy_robot.handle_double_proxy(self.current_proxy)
         return self.get_html_body(url)
    
  2. [代码]根据输入的公司名及关键词列表,返回每个关键词的排名

    <!-- lang: python -->

    def search_keywords_rank(keyword_company_name, keywords): def get_context(url): start=clock() html=curl.get_html_body(url) finish=clock() print url,(finish-start)

     d = pq(html)
     items = d("#J-items-content .ls-item")
     items_c = len(items)
     print items_c
     if items_c < 38:
         return get_context(url)
     return items, items_c
    

    result = OrderedDict() for keyword in keywords: for page_index in range(1,9): u = url % (re.sub('\s+', '_', keyword.strip()), page_index) items, items_c = get_context(u) b = False for item_index in range(0, items_c): e=items.eq(item_index).find('.title a') p_title = e.text() p_url = e.attr('href')

             e=items.eq(item_index).find('.cright h3 .dot-product')
             company_name = e.text()
             company_url = e.attr('href')
    
             if  keyword_company_name in company_url:
                 total_index = (page_index-1)*38 +item_index+1+(0 if page_index==1 else 5)
                 print 'page %s, index %s, total index %s' % (page_index, item_index+1, total_index)
                 b = True
                 if keyword not in result:
                     result[keyword] = (p_title, p_url, page_index, item_index+1, total_index, u)
                 break
         if b:
             break
    

    return result

http://www.freeb2bmarket.com/keywordtool/

由于想放在web服务器上面,这个web页面实际上是用tonardo做的, 在php和tonado同用一个端口的话又用了nginx做前端代理服务器,对nginx的设置也是这次应用的一个学习点吧 ;)

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