微信获取用户的openid和详细信息

#encoding=utf-8
__author__ = 'kevinlu1010@qq.com'


def get_redirect_url(uri, is_info=0):
    '''
    获取url，改url可以访问微信的网址，然后会重定向回来我们的网址，而且附带访问的微信用户的信息
    uri 需要跳转到的uri  如/cherrs
    is_info 是否获取详细信息，如果为1，就获取用户的详细信息，包括名字，图片，否则就获取基本信息，只有open_id
    返回 url
    '''
    pre_url = 'http://xxxx.xxxxx.com'
    appid = 'wxxxxxxxxxxxxxxxxxeb'
    scope = 'snsapi_userinfo' if is_info else 'snsapi_base'
    data = {'redirect_uri': pre_url + uri,
            'appid': appid,
            'response_type': 'code',
            'scope': scope,
            'state': '123'}

    urlencode = urllib.urlencode(data)
    wei_url = 'https://open.weixin.qq.com/connect/oauth2/authorize?' + urlencode + '#wechat_redirect'

    return wei_url

def get_base_info(code):
    '''
    通过获取的code，访问微信的api，获取用户基本信息(只有openid)
    return 用户的open id
    '''
    if not code: return ''
    url = 'https://api.weixin.qq.com/sns/oauth2/access_token'
    try:
        data = {'appid': const.appid, 'secret': const.secret, 'code': code, 'grant_type': 'authorization_code'}
        post_body = urllib.urlencode(data)
        f = urllib2.urlopen(url, post_body).read()
        r = ast.literal_eval(f) #字符串转换成字典
        return r['openid']
    except:
        return ''

def get_detail_info(code):
    '''
    获取用户的详细信息
    return dict {'userID':'','nickname':''m',headimgurl':''}
    '''
    ret = {}
    url = 'https://api.weixin.qq.com/sns/oauth2/access_token'
    try:
        data = {'appid': const.appid, 'secret': const.secret, 'code': code, 'grant_type': 'authorization_code'}
        post_body = urllib.urlencode(data)
        f = urllib2.urlopen(url, post_body).read()
        r = ast.literal_eval(f) #字符串转换成字典

        #获取用户详细信息
        access_token = r['access_token']
        ret['userID'] = r['openid']
        url = 'https://api.weixin.qq.com/sns/userinfo?access_token=%s&openid=%s&lang=zh_CN' % (
            access_token, ret['userID'])
        f = urllib2.urlopen(url).read()
        r = ast.literal_eval(f) #字符串转换成字典
        ret['nickname'] = urllib.unquote(r['nickname'])
        ret['headimgurl'] = urllib.unquote(r['headimgurl'])
    except urllib2.URLError, e:
        return ret
    return ret