C# 非常奇怪的错误？

我收到了一个我没有预料到的401错误。我100%确信密码和用户名是正确的。当我在邮递员身上试用它时，它起作用了，我得到了我期望的数据。但是在这段代码中，.downloadstring方法返回一个401错误。我创建了一个新的harvest帐户，并尝试使用相同的代码访问该帐户，只需更改密码和用户名，即可获得所需的API数据。是否有其他原因导致错误密码或用户名错误401被缓存

public List<Project> GetAllProjects()
{
    uri = "https://bruh.harvestapp.com/projects";
    jsonPath = Path.Combine(HostingEnvironment.MapPath("~/App_Data"), "projects.json");

    using (WebClient webClient = new WebClient())
    {
        webClient.Headers[HttpRequestHeader.ContentType] = "application/json";
        webClient.Headers[HttpRequestHeader.Accept] = "application/json";
        webClient.Headers[HttpRequestHeader.Authorization] = "Basic " + Convert.ToBase64String(new ASCIIEncoding().GetBytes(usernamePassword));

        string response = webClient.DownloadString(uri);

        projectsList = JsonConvert.DeserializeObject<List<Wrapper>>(response).Select(p => p.project).ToList();
    }

    return projectsList;
}

根据harvest的C代码示例，有几件事需要更改：

static void Main(string[] args)
{
  HttpWebRequest request; 
  HttpWebResponse response = null; 
  StreamReader reader; 
  StringBuilder sbSource; 
  // 1. Set some variables specific to your account.
  string uri = "https://yoursubdomain.harvestapp.com/projects";
  string username="youremail@somewhere.com";
  string password="yourharvestpassword";
  string usernamePassword = username + ":" + password;

  ServicePointManager.ServerCertificateValidationCallback = Validator;

try
  { 
     request = WebRequest.Create(uri) as HttpWebRequest; 
     request.MaximumAutomaticRedirections = 1;
     request.AllowAutoRedirect = true;

     // 2. It's important that both the Accept and ContentType headers are
     // set in order for this to be interpreted as an API request.
     request.Accept = "application/xml"; 
     request.ContentType = "application/xml"; 
     request.UserAgent = "harvest_api_sample.cs";
     // 3. Add the Basic Authentication header with username/password string.
     request.Headers.Add("Authorization", "Basic " + Convert.ToBase64String(new ASCIIEncoding().GetBytes(usernamePassword)));

     using (response = request.GetResponse() as HttpWebResponse) 
     { 
        if (request.HaveResponse == true && response != null) 
        { 
           reader = new StreamReader(response.GetResponseStream(), Encoding.UTF8);
           sbSource = new StringBuilder(reader.ReadToEnd());
           // 4. Print out the XML of all projects for this account.
           Console.WriteLine(sbSource.ToString()); 
        } 
     } 
  } 

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我在用你在《邮递员》上说的那个词。让我怀疑这一点。您是否使用Fiddler检查请求是否100%相同？我认为真正的问题在于请求头。您在授权方面有问题。您是否检查了HARVEST-API接受标头的格式。或者你是否发送了正确的令牌，即。用户名：密码或者如果你使用的是基本身份验证，它说用户名+：+密码应该在标题中发送。我让它工作了。问题是密码中包含一个§符号，c在读取时有问题。。。无论如何，谢谢你抽出时间