进行post或者get请求一个网页时返回值为：请使用微信打开页面
解决办法为在请求的头部信息加上userAgent的值来伪装微信内置浏览器去请求
url = "http://xxxxxxxx"
params = {"phone":phone,"name":name}
params = urllib.urlencode(params)
req_header = {"User-Agent":"Mozilla/5.0 (Linux; U; Android 2.3.6; zh-cn; GT-S5660 Build/GINGERBREAD) AppleWebKit/533.1 (KHTML, like Gecko) Version/4.0 Mobile Safari/533.1 MicroMessenger/4.5.255"}
req = urllib2.Request(url,params,req_header)
res = urllib2.urlopen(req)
res = res.read()