Oauth oauth = new Oauth();
try {
AccessToken at = oauth.getAccessTokenByCode(req.getParameter("code"));
para.putParameter(ICallBackParameter.ACCESS_TOKEN, at);
logger.info("Access Token:"+at);
User user=storeService.find(User.class,at.getAccessToken());
if (user == null){
user = new User();
user.setAccessToken(at.getAccessToken());
storeService.store(user);
}else {
logger.info("user:"+user);
}
} catch (WeiboException e) {