icbc.py

#!/usr/bin/env python
# -*- coding:utf-8 -*-

import requests
from pyquery import PyQuery as pq

headers = {
    'User-Agent': 'Mozilla/5.0 (Windows NT 6.3; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/41.0.2272.101 Safari/537.36',
    'Origin': 'http://www.icbc.com.cn',
    'Referer': 'http://www.icbc.com.cn/ICBCDynamicSite2/other/rmbdeposit.aspx',
    'Host': 'www.icbc.com.cn',
}

def get_viewstate():
    res = requests.get('http://www.icbc.com.cn/ICBCDynamicSite2/other/rmbdeposit.aspx',headers=headers).content
    viewstate = pq(res)("#__VIEWSTATE").attr.value
    return viewstate

def get_rate(date):
    data = {
        '__EVENTTARGET':'Sel_Date',
        '__EVENTARGUMENT':'',
        '__LASTFOCUS':'',
        '__VIEWSTATE':get_viewstate(),
        'Sel_Date':date,
    }
    r = requests.post('http://www.icbc.com.cn/ICBCDynamicSite2/other/rmbdeposit.aspx',headers=headers,data=data)
    return r.content

if __name__ == '__main__':
    print get_rate('2015-05-11')