Question

尝试发送发布请求（在邮递员中工作正常），但在C＃中不断收到401未经授权的异常。这是我的代码：

var httpClient = new HttpClient();
var creds = string.Format("{0}:{1}", "username", "password");
var basicAuth = string.Format("Basic {0}", Convert.ToBase64String(Encoding.UTF8.GetBytes(creds)));
httpClient.DefaultRequestHeaders.Add("Authorization", basicAuth);

var requestMessage = new HttpRequestMessage(HttpMethod.Post, url);
requestMessage.Content = new StringContent(postData, Encoding.UTF8, "application/json");
requestMessage.Headers.Authorization = new AuthenticationHeaderValue("Basic", "encodedValue==");

var post = httpClient.SendAsync(requestMessage);
post.Wait();

使用HttpWebRequest时发生相同的事情：

var webReq = (HttpWebRequest)WebRequest.Create(url);
webReq.Headers.Add("Authorization","Basic encodedValue==");
webReq.Method = "POST";
webReq.ContentType = "application/json";

try
{
    using (var streamWriter = new StreamWriter(webReq.GetRequestStream()))
    {
        streamWriter.Write(json);
        streamWriter.Flush();
        streamWriter.Close();
    }

    var httpResponse = (HttpWebResponse)webReq.GetResponse();
    using (var streamReader = new StreamReader(httpResponse.GetResponseStream()))
    {
        response = streamReader.ReadToEnd();
    }
}

有人有什么想法可以尝试吗？ PS（encodedValue ==已正确编码）

Answer 1

HttpClient在重定向时丢失其标头。

因此，请确保使用正确的API地址。如果您的API不允许不安全的连接，但是您使用“ http://your-api-address.xy/”而不是“ https://your-api-address.xy/”，它将返回重定向，并且客户端将丢失标头。

Answer 2

请试试这个代码

using (HttpClient client = new HttpClient())
{
    var byteArray = Encoding.ASCII.GetBytes("user:passowrd");

    client.DefaultRequestHeaders.Authorization = new System.Net.Http.Headers.AuthenticationHeaderValue("Basic", Convert.ToBase64String(byteArray));

    var response = client.SendAsync(object);
}

具有授权和JSON数据的C＃HttpClient发布-401未经授权

2 个答案: