Get CNVD's cookie

    def getCookie(self):
        #get cookies
        spiderFirefox = webdriver.Firefox()
        
        spiderFirefox.get("http://www.cnvd.org.cn/")
        
        time.sleep(5)
        cookies = ""
        for cookie in spiderFirefox.get_cookies():
            cookies += u"%s=%s; "%(cookie["name"], cookie["value"])
        spiderFirefox.close()
        return cookies