import urllib2
def post_data(app_para_dct):
content = ""
if app_para_dct:
para_dct = {}
para_dct['a'] = 'a'
para_dct['b'] = 'b'
url = """http://gw.api.taobao.com/router/rest"""
para_data = urllib.urlencode(para_dct)
f = urllib2.urlopen(url, para_data)
content = f.read()
return content