python使用urllib模块和pyquery实现阿里巴巴排名查询

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)