我有一个HttpClient,我正在使用一个REST API。但是,我在设置授权标头时遇到了麻烦。我需要将标头设置为我从执行OAuth请求中接收到的令牌。 我看到了一些。net的代码,建议如下:
httpClient.DefaultRequestHeaders.Authorization = new Credential(OAuth.token);
然而,凭据类在WinRT中不存在。有人知道如何设置授权头吗?
我有一个HttpClient,我正在使用一个REST API。但是,我在设置授权标头时遇到了麻烦。我需要将标头设置为我从执行OAuth请求中接收到的令牌。 我看到了一些。net的代码,建议如下:
httpClient.DefaultRequestHeaders.Authorization = new Credential(OAuth.token);
然而,凭据类在WinRT中不存在。有人知道如何设置授权头吗?
当前回答
如果您正在使用Visual Studio IISExpress调试模式并连接到HTTP端口而不是HTTPS端口,您可能会发现身份验证头被删除。
切换到SLL连接,它们将再次出现。
不确定原因,可能是设置重定向HTTP流量,导致身份验证被删除。
其他回答
使用System.Net.Http程序集的AuthenticationHeaderValue类
public AuthenticationHeaderValue(
string scheme,
string parameter
)
我们可以像这样设置或更新httpclient现有的授权头:
httpclient.DefaultRequestHeaders.Authorization = new AuthenticationHeaderValue("Bearer", TokenResponse.AccessToken);
request.DefaultRequestHeaders.Authorization =
new AuthenticationHeaderValue(
"Basic", Convert.ToBase64String(
System.Text.ASCIIEncoding.ASCII.GetBytes(
$"{yourusername}:{yourpwd}")));
使用基本授权和Json参数。
using (HttpClient client = new HttpClient())
{
var request_json = "your json string";
var content = new StringContent(request_json, Encoding.UTF8, "application/json");
var authenticationBytes = Encoding.ASCII.GetBytes("YourUsername:YourPassword");
client.DefaultRequestHeaders.Authorization = new AuthenticationHeaderValue("Basic",
Convert.ToBase64String(authenticationBytes));
client.DefaultRequestHeaders.Accept.Add(new MediaTypeWithQualityHeaderValue("application/json"));
var result = await client.PostAsync("YourURL", content);
var result_string = await result.Content.ReadAsStringAsync();
}
使用c# HttpClient设置基本身份验证。下面的代码为我工作。
using (var client = new HttpClient())
{
var webUrl ="http://localhost/saleapi/api/";
var uri = "api/sales";
client.BaseAddress = new Uri(webUrl);
client.DefaultRequestHeaders.Accept.Add(new MediaTypeWithQualityHeaderValue("application/json"));
client.DefaultRequestHeaders.ConnectionClose = true;
//Set Basic Auth
var user = "username";
var password = "password";
var base64String =Convert.ToBase64String( Encoding.ASCII.GetBytes($"{user}:{password}"));
client.DefaultRequestHeaders.Authorization = new AuthenticationHeaderValue("Basic",base64String);
var result = await client.PostAsJsonAsync(uri, model);
return result;
}
BaseWebApi.cs
public abstract class BaseWebApi
{
//Inject HttpClient from Ninject
private readonly HttpClient _httpClient;
public BaseWebApi(HttpClient httpclient)
{
_httpClient = httpClient;
}
public async Task<TOut> PostAsync<TOut>(string method, object param, Dictionary<string, string> headers, HttpMethod httpMethod)
{
//Set url
HttpResponseMessage response;
using (var request = new HttpRequestMessage(httpMethod, url))
{
AddBody(param, request);
AddHeaders(request, headers);
response = await _httpClient.SendAsync(request, cancellationToken);
}
if(response.IsSuccessStatusCode)
{
return await response.Content.ReadAsAsync<TOut>();
}
//Exception handling
}
private void AddHeaders(HttpRequestMessage request, Dictionary<string, string> headers)
{
request.Headers.Accept.Clear();
request.Headers.Accept.Add(new MediaTypeWithQualityHeaderValue("application/json"));
if (headers == null) return;
foreach (var header in headers)
{
request.Headers.Add(header.Key, header.Value);
}
}
private static void AddBody(object param, HttpRequestMessage request)
{
if (param != null)
{
var content = JsonConvert.SerializeObject(param);
request.Content = new StringContent(content);
request.Content.Headers.ContentType = new MediaTypeHeaderValue("application/json");
}
}
SubWebApi.cs
public sealed class SubWebApi : BaseWebApi
{
public SubWebApi(HttpClient httpClient) : base(httpClient) {}
public async Task<StuffResponse> GetStuffAsync(int cvr)
{
var method = "get/stuff";
var request = new StuffRequest
{
query = "GiveMeStuff"
}
return await PostAsync<StuffResponse>(method, request, GetHeaders(), HttpMethod.Post);
}
private Dictionary<string, string> GetHeaders()
{
var headers = new Dictionary<string, string>();
var basicAuth = GetBasicAuth();
headers.Add("Authorization", basicAuth);
return headers;
}
private string GetBasicAuth()
{
var byteArray = Encoding.ASCII.GetBytes($"{SystemSettings.Username}:{SystemSettings.Password}");
var authString = Convert.ToBase64String(byteArray);
return $"Basic {authString}";
}
}