參考文獻：利用EditThisCookie獲取cookie跳過登陸驗證（醫(yī)脈通）

EditThisCookie是一款可以管理Chrome瀏覽器中cookies的插件，用戶可以利用EditThisCookie添加，刪除，編輯，搜索翩隧，鎖定和屏蔽cookies。

我們手動登陸醫(yī)脈通后，利用 EditThisCookie 導(dǎo)出 cookie腾窝，并將其保存到一個txt文件中

這時cookie已被我們成功獲取
下一步將cookie附入我們每次的請求，如下代碼所示

cookie_jar = cookielib.MozillaCookieJar()
cookies = open('cookie.txt').read()
for cookie in json.loads(cookies):
    cookie_jar.set_cookie(cookielib.Cookie(version=0, name=cookie['name'],             
    value=cookie['value'], port=None, port_specified=False,   
    domain=cookie['domain'],     domain_specified=False, 
    domain_initial_dot=False, path=cookie['path'], path_specified=True, 
    secure=cookie['secure'], expires=None, discard=True, comment=None, 
    comment_url=None, rest={'HttpOnly': None}, rfc2109=False))

opener = urllib2.build_opener(urllib2.HTTPCookieProcessor(cookie_jar),urllib2.HTTPHandler)

urllib2.install_opener(opener)

現(xiàn)在我們已經(jīng)將cokie放入urllib2包中了居砖，以后每次訪問的時候cookielib都會幫我們自動管理cookie虹脯，不需要我們操心啦！悯蝉！

爬蟲

其實cookie不用我們管后归形，爬蟲就是很普通的urllib2的爬蟲了，沒有什么特別的鼻由。

代碼

# -*- coding: utf-8 -*-

import json
import urllib2
import cookielib

from pyquery import PyQuery as pq

class YMT(object):

    def __init__(self):
        """
        讀取從 EditThisCookie 上獲取的cookie
        并將其綁定到 urllib2 上
        以后每次爬蟲訪問網(wǎng)站時都會自動帶上cookie暇榴，不再需要人工參與
        """

        cookie_jar = cookielib.MozillaCookieJar()
        cookies = open('cookie.txt').read()
        for cookie in json.loads(cookies):
            cookie_jar.set_cookie(cookielib.Cookie(version=0, name=cookie['name'], value=cookie['value'], port=None, port_specified=False, domain=cookie['domain'], domain_specified=False, domain_initial_dot=False, path=cookie['path'], path_specified=True, secure=cookie['secure'], expires=None, discard=True, comment=None, comment_url=None, rest={'HttpOnly': None}, rfc2109=False))

        opener = urllib2.build_opener(urllib2.HTTPCookieProcessor(cookie_jar),urllib2.HTTPHandler)
        urllib2.install_opener(opener)

    def _get(self, url):
        """
        :param url: 需要訪問的url
        :return:    返回該url的網(wǎng)頁內(nèi)容
        """

        request = urllib2.Request(url=url)
        request.add_header('Referer', 'http://meddic.medlive.cn/search/search.do')
        response = urllib2.urlopen(request)
        data = response.read()
        return data

    def get_word_translate(self,word):
        """
        :param word: 需要翻譯的英文單詞
        :return: 如果有對應(yīng)英文的中文，則返回該中文翻譯蕉世，否則返回None
        """

        url = 'http://meddic.medlive.cn/search/search.do?word=%s' % word.replace(' ','+')
        html = self._get(url)

        # 用 pyquery 定位翻譯
        q = pq(html)
        paraphrase_list = q('.paraphrase_list')

        for paraphrase in paraphrase_list:
            p = pq(paraphrase)

            if p('.dictionary').text() == '英漢醫(yī)學(xué)短語詞典':
                return p('.dictionary_message').text()

        return None


if __name__ == '__main__':
    ymt = YMT()
    word = 'Whipple disease'
    print ymt.get_word_translate(word)