Twitter:在 C# 中验证用户名和密码 [英] Twitter: verifying username and password in C#

问题描述

悬赏问题

我使用的是 c# 3.5 Window Forms 应用程序.我正在使用接受的答案中提到的代码.我得到以下错误

I am using c# 3.5 Window Forms Application. I am using the code mentioned in the accepted answer. and I am getting below error

验证用户名和密码的示例代码将不胜感激

悬赏问题结束

我有一个具有以下用例的应用程序:当用户第一次开始使用该应用程序时，他输入了他的用户名和密码.然后，在更晚的阶段，应用程序可能会更新其状态.

I have an application with the following use-case: when the user first starts using the application, he inputs his username and password. Then, at a much later stage, the application may update his status.

目前我正在使用 Twitterizer，但我相信这个问题超出了我正在使用的特定库的范围.以下是两行相关的代码:

Currently I'm using Twitterizer, but I believe the question is beyond the scope of the specific library I'm using. Following are the two relevant lines of code:

Twitter twitter = new Twitter("username", "password", "source"); 
twitter.Status.Update("update");

如果用户名/密码不正确，Twitter 对象的构造不会抛出异常.这可能是因为此时没有发送任何内容.另一方面，如果用户名/密码无效，状态更新会抛出异常.

The construction of the Twitter object does not throw an exception if the username/password are incorrect. This is probably because nothing is sent at this point. On the other hand, the status update does throw an exception if the username/password are invalid.

我的问题是我想在用户输入时验证用户名/密码，而不是在尝试发布更新时.

My problem is that I want to validate the username/password at the point of user input, not when trying to post the update.

如何在不发布任何内容的情况下验证用户名/密码(在 Twitterizer 或其他方式中)?

How can I validate the username/password without posting anything (in Twitterizer or otherwise)?

推荐答案

快速浏览 peSHIr 提到的 verify_credentials API，我编写了一个小程序，它似乎可以解决问题.已经晚了，但我能够对其进行几次测试，并且似乎可以正常工作.

Taking a quick look at the verify_credentials API as mentioned by peSHIr, I wrote a little routine which seems to do the trick. It's late, but I was able to test it a couple of times and seems to work.

在我的函数中，如果我得到一个 HttpResponseCode.OK，我只是返回 true，如果我得到其他任何东西或抛出异常，我就会返回 false.如果 Twitter 不喜欢 uid/密码，则会抛出异常并显示 401 错误(未授权).

In my function, I am just returning true if I I get an HttpResponseCode.OK, and false if I get anything else or an exception is thrown. If twitter does not like the uid/password an exception will be thrown with a 401 error (not authorized.)

public bool CheckTwitterCredentials(string UserName, string Password)
{
    // Assume failure
    bool Result = false;

    // A try except block to handle any exceptions
    try {
        // Encode the user name with password
        string UserPass = Convert.ToBase64String(
            System.Text.Encoding.UTF8.GetBytes(UserName + ":" + Password));

        // Create our HTTP web request object
        HttpWebRequest Request = 
            (HttpWebRequest)WebRequest.Create("http://twitter.com/account/verify_credentials.xml");

        // Set up our request flags and submit type
        Request.Method = "GET";
        Request.ContentType = "application/x-www-form-urlencoded";

        // Add the authorization header with the encoded user name and password
        Request.Headers.Add("Authorization", "Basic " + UserPass);

        // Use an HttpWebResponse object to handle the response from Twitter
        HttpWebResponse WebResponse = (HttpWebResponse)Request.GetResponse();

        // Success if we get an OK response
        Result = WebResponse.StatusCode == HttpStatusCode.OK;
    } catch (Exception Ex) {
        System.Diagnostics.Debug.WriteLine("Error: " + Ex.Message);
    }

    // Return success/failure
    return Result;
}

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