/**
* 获取token，适用于获取access_token和刷新token
*
* @param accessTokenUrl 实际请求token的地址
* @return token对象
*/
private AuthToken getToken(string accessTokenUrl)
{
var reqParams = new Dictionary <string, object>
{
{ "Host", "https://login.microsoftonline.com" },
{ "Content-Type", "application/x-www-form-urlencoded" },
};
var reqParamDic = GlobalAuthUtil.parseUrlObject(accessTokenUrl);
var response = HttpUtils.RequestPost(accessTokenUrl, JsonConvert.SerializeObject(reqParamDic), reqParams);
var accessTokenObject = response.parseObject();
this.checkResponse(accessTokenObject);
var authToken = new AuthToken();
authToken.accessToken = accessTokenObject.getString("access_token");
authToken.tokenType = accessTokenObject.getString("token_type");
authToken.expireIn = accessTokenObject.getInt32("expires_in");
authToken.refreshToken = accessTokenObject.getString("refresh_token");
authToken.scope = accessTokenObject.getString("scope");
return(authToken);
}