从非Web客户端调用ASP.NET 2.0身份验证服务

我从来没有得到过答案,但最终在 this tutorial . 简短的回答是肯定的,我必须在相当低的水平上管理Ajax请求/响应。假设您有一个需要验证的用户名和密码,那么首先需要为其获取一个验证cookie。我用过 Json.NET library from Newtonsoft 对于JSON序列化和反序列化,您可以使用任何东西。

Cookie GetFormAuthenticationCookie(string username, string password)
        {
            string uriString = ServerName + AUTH_SERVICE_URL;
            Uri uri = new Uri(uriString);

            // Need to cast this to HttpWebRequest to set CookieContainer property
            // With a null CookieContainer property on the request, we'd get an
            // empty HttpWebRequest.Cookies property
            HttpWebRequest request = WebRequest.Create(uri) as HttpWebRequest;
            request.Method = "POST";
            request.ContentType = "application/json; charset=utf-8";
            request.CookieContainer = new CookieContainer(); // needed to get non-empty Cookies collection back in response object

            // requestContents needs to look like this:
            // {
            //     username = 'theUserName',
            //     password = 'thePassword',
            //     createPersistentCookie = false
            // }
            string requestContents = GetJsonForLoginRequest(username, password);

            byte[] postData = Encoding.UTF8.GetBytes(requestContents);
            request.ContentLength = postData.Length;
            using (Stream dataStream = request.GetRequestStream())
            {
                dataStream.Write(postData, 0, postData.Length);
            }

            HttpWebResponse response = (HttpWebResponse)request.GetResponse();
            if (response.StatusCode != HttpStatusCode.OK)
            {
                throw new WebException("Response returned HttpStatusCode " + response.StatusCode);
            }

            // For now, assuming response ContentType is "application/json; charset=utf-8"
            object responseJson;
            using (Stream responseStream = response.GetResponseStream())
            {
                StreamReader reader = new StreamReader(responseStream);
                string responseString = reader.ReadToEnd();

                responseJson = JavaScriptConvert.DeserializeJson(responseString);
            }

            if (responseJson is bool)
            {
                bool authenticated = (bool)responseJson;
                if (authenticated)
                {
                    // response was "true"; return the cookie
                    return response.Cookies[".ASPXFORMSAUTH"];
                }
                else
                {
                    // apparently the login failed
                    return null;
                }
            }
            else
            {
                return null;
            }
        }

接下来,将cookie添加到后续请求中。在我的例子中,这意味着将cookie添加到我使用的Web服务代理的cookieContainer中。

我无法使AuthenticationService工作。当我试图从我的winforms应用程序调用authentication_json_AppService.axd时,我一直收到404个错误。所以我最终编写了自己的JSON身份验证webmethod。

抱歉,这不是C,我的项目是vb.net。我用过这个 http://progtutorials.tripod.com/Authen.htm 作为参考。

<WebMethod(EnableSession:=True)>
<ScriptMethod(ResponseFormat:=ResponseFormat.Json)>
Public Function Login(ByVal username As String, ByVal password As String) As Boolean

    Dim result As Boolean = False

    ' If (FormsAuthentication.Authenticate(username,password)) ' this may also work to authenticate
    If (Membership.ValidateUser(username, password)) Then 
        FormsAuthentication.SetAuthCookie(username, False)

        Dim ticket As FormsAuthenticationTicket = New FormsAuthenticationTicket(username, False, 30)
        Dim ticketString As String = FormsAuthentication.Encrypt(ticket)

        Dim cookie As HttpCookie = New HttpCookie(FormsAuthentication.FormsCookieName, ticketString)
        Context.Response.Cookies.Add(cookie)

        result = True

    End If

    Return result

End Function

请确保您的web.config中的匿名用户可以访问您的身份验证Web服务。

  <location path="Authentication.asmx">
    <system.web>
      <authorization>
        <allow users="*" />
      </authorization>
    </system.web>
  </location>