private AlibabaException GetAlibabaException(WebException webException)
{
AlibabaException alibabaException = null;
byte[] buffer = this.m_bufferManager.TakeBuffer(BUFFER_POOL_ITEM_SIZE);
try {
using (HttpWebResponse response = (HttpWebResponse)webException.Response) {
if (response != null)
{
string content = response.GetResponseString(buffer);
ChinaAlibabaErrorInfo info = this.m_jsonSerializer.Deserialize <ChinaAlibabaErrorInfo>(content);
alibabaException = new AlibabaException(info.error_description ?? info.error_message, (int)response.StatusCode, webException);
}
else
{
alibabaException = new AlibabaException(webException.Message, 500, webException);
}
}
} catch (Exception ex) {
alibabaException = new AlibabaException(string.Format("Error occurred when parse error response: {0}", ex.Message), 500, ex);
} finally {
this.m_bufferManager.ReturnBuffer(buffer);
}
return(alibabaException);
}
private void ProcessReturnValue <TReturn>(Exception error, string content, Action <Exception, TReturn> callback)
{
TReturn value = default(TReturn);
if (error == null && content != null)
{
try {
value = this.m_jsonSerializer.Deserialize <TReturn>(content);
} catch (Exception ex) {
error = new AlibabaException(string.Format("Error occurred when parse response content: {0}", ex.Message), 500, ex);
}
}
callback(error, value);
}
private void SendHttpRequest(HttpWebRequest request, Action <Exception, string> callback)
{
NetworkRequestAsyncTimeout.RegisterRequest(request.BeginGetResponse((ar) => {
string content = null;
Exception error = null;
byte[] buffer = this.m_bufferManager.TakeBuffer(BUFFER_POOL_ITEM_SIZE);
try {
using (HttpWebResponse response = (HttpWebResponse)request.EndGetResponse(ar)) {
content = response.GetResponseString(buffer);
}
} catch (WebException ex) {
error = this.GetAlibabaException(ex);
} catch (Exception ex) {
error = new AlibabaException(string.Format("Error occurred when send HTTP request: {0}", ex.Message), 500, ex);
} finally {
this.m_bufferManager.ReturnBuffer(buffer);
}
callback(error, content);
}, null), request, this.m_timeout);
}
private void SendPostRequest(string url, IDictionary <string, string> args, Encoding encoding, Action <Exception, string> callback)
{
HttpWebRequest request = this.CreateRequest(url, WebRequestMethods.Http.Post, encoding);
string queryString = AlibabaHelper.GetQueryString(args, encoding ?? this.m_defaultEncoding);
byte[] data = queryString.Length > 0 ? (encoding ?? this.m_defaultEncoding).GetBytes(queryString) : null;
if (data != null)
{
request.ContentLength = data.Length;
NetworkRequestAsyncTimeout.RegisterRequest(request.BeginGetRequestStream((ar) => {
Exception error = null;
try {
using (Stream writer = request.EndGetRequestStream(ar)) {
writer.Write(data, 0, data.Length);
}
} catch (WebException ex) {
error = this.GetAlibabaException(ex);
} catch (Exception ex) {
error = new AlibabaException(string.Format("Error occurred when send POST data: {0}", ex.Message), 500, ex);
}
if (error != null)
{
callback(error, null);
}
else
{
this.SendHttpRequest(request, callback);
}
}, null), request, this.m_timeout);
}
else
{
this.SendHttpRequest(request, callback);
}
}
/// <summary>
/// 接受回调请求后向平台换取Token。
/// </summary>
/// <param name="application">应用信息。</param>
/// <param name="callbackRequest">回调请求。</param>
public override async Task<AuthorizationResult> GetTokenAsync(Application application, HttpRequest callbackRequest)
{
#region 获取Token请求参数
//从请求报文中获取签名
string code = callbackRequest.Params["Code"];
//授权类型，使用authorization_code即可
string grant_type = "authorization_code";
//是否需要返回refresh_token，如果返回了refresh_token，原来获取的refresh_token也不会失效，除非超过半年有效期
string need_refresh_token = "true";
//app唯一标识，即appKey
string client_id = application.AppKey;
//app密钥
string client_secret = application.Secret;
//app入口地址
string redirect_uri = application.RedirectUrl;
#endregion
#region 生成请求URL
string url = application.Platform.TokenUrl.Replace("YOUR_APPKEY", application.AppKey);
string para = string.Format("grant_type={0}&need_refresh_token={1}&client_id= {2}&client_secret= {3}&redirect_uri={4}&code={5}",
grant_type, need_refresh_token, client_id, client_secret, redirect_uri, code);
#endregion
#region 发送请求及返回结果
try
{
//发送请求报文
string json = await HttpHelp.GetStrAsync(url + "?" + para);
//判断是否返回异常
if (json.Contains("error"))
{
AlibabaException alibabaException = await Task.Factory.StartNew(() => { return JsonConvert.DeserializeObject<AlibabaException>(json); });
//抛出异常
if (string.IsNullOrWhiteSpace(alibabaException.Error))
{
throw EtpException.Create(application.Platform.Name, alibabaException.Error_code.ToString(), alibabaException.Error_message, "", "");
}
else
{
throw EtpException.Create(application.Platform.Name, alibabaException.Error, alibabaException.Error_description, "", "");
}
}
else
{
//把返回的json字符串反序列化
AlibabaJson alibabaJson = await Task.Factory.StartNew(() => { return JsonConvert.DeserializeObject<AlibabaJson>(json); });
//填充AuthorizationResult数据
return new AuthorizationResult()
{
Token = alibabaJson.Access_token,
OpenId =alibabaJson.AliId,
RefreshToken = alibabaJson.Refresh_token,
UserName = alibabaJson.MemberId,
ExpireAt = DateTime.Now.AddMinutes(-1).AddSeconds(alibabaJson.Expires_in),
RefreshExpireAt = DateTime.Parse(alibabaJson.Refresh_token_timeout.Substring(0, 4) + "-" +
alibabaJson.Refresh_token_timeout.Substring(4, 2) + "-" +
alibabaJson.Refresh_token_timeout.Substring(6, 2) + " " +
alibabaJson.Refresh_token_timeout.Substring(8, 2) + ":" +
alibabaJson.Refresh_token_timeout.Substring(10, 2) + ":" +
alibabaJson.Refresh_token_timeout.Substring(12, 2))
};
}
}
catch (Exception ex)
{
throw ex;
}
#endregion
}
