String code=request.getParameter("code");
        StringBuilder param=new StringBuilder("grant_type=authorization_code");
        TaobaoClient client=new DefaultTaobaoClient("http://gw.api.taobao.com/router/rest", appKey, appSecret);
        UserGetRequest req=new UserGetRequest();
        req.setFields("user_id,uid,nick,sex,buyer_credit,seller_credit,location,created,last_visit,birthday,type,status,alipay_no,alipay_account,alipay_account,email,consumer_protection,alipay_bind");
        try {
            UserGetResponse userResponse = client.execute(req , code);
        } catch (ApiException e) {
            e.printStackTrace();
        }