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    python使用urllib模块和pyquery实现阿里巴巴排名查询

    作者:admin 时间:2021-06-12 18:29

    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

    复制代码 代码如下:

    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)

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