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
我是这样做的:
using (HttpClient httpClient = new HttpClient())
{
Dictionary<string, string> tokenDetails = null;
var messageDetails = new Message { Id = 4, Message1 = des };
HttpClient client = new HttpClient();
client.BaseAddress = new Uri("http://localhost:3774/");
var login = new Dictionary<string, string>
{
{"grant_type", "password"},
{"username", "sa@role.com"},
{"password", "lopzwsx@23"},
};
var response = client.PostAsync("Token", new FormUrlEncodedContent(login)).Result;
if (response.IsSuccessStatusCode)
{
tokenDetails = JsonConvert.DeserializeObject<Dictionary<string, string>>(response.Content.ReadAsStringAsync().Result);
if (tokenDetails != null && tokenDetails.Any())
{
var tokenNo = tokenDetails.FirstOrDefault().Value;
client.DefaultRequestHeaders.Add("Authorization", "Bearer " + tokenNo);
client.PostAsJsonAsync("api/menu", messageDetails)
.ContinueWith((postTask) => postTask.Result.EnsureSuccessStatusCode());
}
}
}
这个you-tube视频帮了我大忙。请查看一下。 https://www.youtube.com/watch?v=qCwnU06NV5Q
在这种情况下,你想发送HttpClient请求与持有者令牌,这段代码可以是一个很好的解决方案:
var requestMessage = new HttpRequestMessage
{
Method = HttpMethod.Post,
Content = new StringContent(".....", Encoding.UTF8, "application/json"),
RequestUri = new Uri(".....")
};
requestMessage.Headers.Authorization = new AuthenticationHeaderValue("Bearer", "Your token");
var response = await _httpClient.SendAsync(requestMessage);
对于现在(2021年)找到这个旧线程的人,请看看这个关于HttpClientFactory的文档,它是可注入的,也会在每个请求上重新运行,避免过期的令牌,这将使它对承载令牌,生成的客户端,池等有用。
TL;DR:使用HttpClientFactory和一个DelegatingHandler,它将作为与您配置的客户端的所有外发请求的中间件。
这就是我如何为Azure身份添加我的承载者(由Azure管理),但你当然可以获得你想要的令牌;
using Microsoft.Azure.Services.AppAuthentication;
using System.Net.Http;
using System.Threading;
using System.Threading.Tasks;
public class BearerTokenHandler : DelegatingHandler
{
public BearerTokenHandler(AzureServiceTokenProvider tokenProvider, string resource)
{
TokenProvider = tokenProvider;
Resource = resource;
}
public AzureServiceTokenProvider TokenProvider { get; }
public string Resource { get; }
protected override async Task<HttpResponseMessage> SendAsync(HttpRequestMessage request, CancellationToken cancellationToken)
{
if (!request.Headers.Contains("Authorization"))
{
// Fetch your token here
string token = await TokenProvider.GetAccessTokenAsync(Resource);
request.Headers.Authorization = new System.Net.Http.Headers.AuthenticationHeaderValue("Bearer", token);
}
return await base.SendAsync(request, cancellationToken);
}
}
我在Startup中这样配置我的类型化客户端(用NSwag生成);
var accessTokenProvider = new AzureServiceTokenProvider("<your-connection-string-for-access-token-provider>");
builder.Services.AddHttpClient<IOrdersClient, OrdersClient>().ConfigureHttpClient(async conf =>
{
conf.BaseAddress = new Uri("<your-api-base-url>");
}).AddHttpMessageHandler(() => new BearerTokenHandler(accessTokenProvider, "https://your-azure-tenant.onmicrosoft.com/api"));
然后你可以在任何你喜欢的地方注入你的IOrdersClient,所有的请求都会有承载者。
这可能有助于设置标题:
WebClient client = new WebClient();
string authInfo = this.credentials.UserName + ":" + this.credentials.Password;
authInfo = Convert.ToBase64String(Encoding.Default.GetBytes(authInfo));
client.Headers["Authorization"] = "Basic " + authInfo;
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();
}