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[英]ASP.NET Core 5 Web API no sign in authentication handler is registered for the Scheme 'cookies'
[英]ASP.NET Core Web API - JWT Message Handler - No Registered Type Error
我为我的 Web API 项目创建了一个 JWT 令牌处理程序。 这个想法是,这个 API 只是通往其他 API 的网关,并且在它们之间共享一个令牌。 因此,当对我的 API 进行呼叫并将呼叫转发给另一个时,我想自动转发附加到初始请求的 JWT。
我制作了一个自定义 MessageHandler ,如下所示:
public class JwtTokenHeaderHandler : DelegatingHandler
{
private readonly HttpContext httpContext;
public JwtTokenHeaderHandler(HttpContext httpContext)
{
this.httpContext = httpContext;
}
protected override async Task<HttpResponseMessage> SendAsync(
HttpRequestMessage request,
CancellationToken cancellationToken)
{
string savedToken = await this.httpContext.GetTokenAsync("access_token");
request.Headers.Add("bearer", savedToken);
return await base.SendAsync(request, cancellationToken);
}
}
然后我在 Startup 中将其注册为服务,如下所示:
services.AddTransient<HttpMessageHandler>(p => p.GetRequiredService<JwtTokenHeaderHandler>());
IHttpClientBuilder serviceClientBuilder = services.AddHttpClient<IService, Service>(client =>
{
client.BaseAddress = new Uri(this.Configuration.GetValue<string>("ServiceURL"));
}).AddHttpMessageHandler<JwtTokenHeaderHandler>();
应用程序一直运行,直到发出请求,然后出现此异常:
执行请求时发生未处理的异常。
System.InvalidOperationException:未注册“Application.API1.JwtTokenHeaderHandler”类型的服务。 在 Microsoft.Extensions.DependencyInjection.ServiceProviderServiceExtensions.GetRequiredService(IServiceProvider provider, Type serviceType) 在 Microsoft.Extensions.DependencyInjection.ServiceProviderServiceExtensions.GetRequiredService[T](IServiceProvider provider) 在 Microsoft.Extensions.DependencyInjection.HttpClientBuilderExtensions.<>c__4`1.b__4_1 (HttpMessageHandlerBuilder b) 在 Microsoft.Extensions.Http.DefaultHttpClientFactory.<>c__DisplayClass17_0.g__Configure|0(HttpMessageHandlerBuilder b) 在 Microsoft.Extensions.Http.LoggingHandlerBuilder HttpMessageHandlerBuilder0__(HttpMessageHandlerBuilder)0(HttpMessageHandlerBuilder)0
首先,直接注入HttpContext
会导致问题。 使用IHttpContextAccessor
并在 Send 方法中访问上下文。
public class JwtTokenHeaderHandler : DelegatingHandler {
private readonly IHttpContextAccessor accessor;
public JwtTokenHeaderHandler(IHttpContextAccessor accessor) {
this.accessor = accessor;
}
protected override async Task<HttpResponseMessage> SendAsync(HttpRequestMessage request, CancellationToken cancellationToken) {
string savedToken = await accessor.HttpContext.GetTokenAsync("access_token");
request.Headers.Add("bearer", savedToken);
return await base.SendAsync(request, cancellationToken);
}
}
Next GetRequiredService
在请求的服务未向集合注册时抛出该异常,因此请确保向容器注册处理程序
笔记
处理程序类型必须注册为临时服务。
参考AddHttpMessageHandler<THandler>(IHttpClientBuilder)
services.AddTransient<JwtTokenHeaderHandler>();
这样JwtTokenHeaderHandler
可以在服务提供者请求时解析
services.AddTransient<HttpMessageHandler>(p => p.GetRequiredService<JwtTokenHeaderHandler>());
services.AddHttpClient<IService, Service>(client => {
client.BaseAddress = new Uri(this.Configuration.GetValue<string>("ServiceURL"));
}).AddHttpMessageHandler<JwtTokenHeaderHandler>();
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