JWT Bearer ASP.Net Core 3.1用户在服务器上为空

Question

今天，我一直在尝试使用Microsoft.AspNetCore.Authentication.JwtBearer库将JSON Web令牌信息绑定到HttpContext.User。

问题：每次调用服务器时，我都可以使用[Authorize]属性进入函数，但是User对象完全为空。很高兴知道每个用户是谁。

我在客户端解码的JWT：

我的客户端函数在服务器上调用[Authorize] C＃方法：

testAuth() {
    let token = localStorage.getItem("jwt");
    console.log(this.jwtHelper.decodeToken(token)); // Where I got the decoded JWT picture
    this.http.get(this.baseUrl + "Authentication/Test", {
      headers: new HttpHeaders({
        "Content-Type": "application/json",
        "Authentication": "Bearer " + token
      })
    }).subscribe(response => {
      console.log(response); // never happens
    }, err => {
      console.log(err); // always happens because User.Identity is null
    });
  }

[服务器方法，其中User.Identity始终为空白，但是我们可以通过[Authorize]属性来允许它：

[HttpGet]
[Authorize]
public IActionResult Test()
{
    // User.Identity is always blank, so a 500 error is thrown because Name == null
    return Ok(HttpContext.User.Identity.Name);
}

中间件管道：Startup.cs中的ConfigureServices（）：

services.AddControllers();

            // Enable CORS (cross origin requests) so other sites can send requests to the auth API
            services.AddCors();

            // JWT
            // Use JSON Web Tokens for auth
            services.AddAuthentication(opt => {
                opt.DefaultAuthenticateScheme = JwtBearerDefaults.AuthenticationScheme;
                opt.DefaultChallengeScheme = JwtBearerDefaults.AuthenticationScheme;
            })
            .AddJwtBearer(x =>
            {
                x.RequireHttpsMetadata = false;
                x.SaveToken = true;
                x.TokenValidationParameters = new TokenValidationParameters
                {
                    ValidateAudience = true,
                    ValidateIssuerSigningKey = true,
                    ValidateLifetime = false,
                    IssuerSigningKey = new SymmetricSecurityKey(System.Text.Encoding.UTF8.GetBytes(Configuration.GetValue<string>("JwtInfo:SecretKey"))),
                    ValidIssuer = Configuration.GetValue<string>("JwtInfo:ServerAddress", "http://localhost:44351/"), // Address that this project is running on
                    ValidAudience = Configuration.GetValue<string>("JwtInfo:ValidRecipients", "http://localhost:44364/") // Addresses of projects that are allowed to access this API
                };
            });

Startup.cs中的Configure（）：

app.UseHttpsRedirection();

            app.UseRouting();

            // Allow CORS (cross origin requests)
            // This must come before routing, authentication, and endpoints
            app.UseCors(option => option
                .AllowAnyOrigin()
                .AllowAnyMethod()
                .AllowAnyHeader());

            // Use JWT authentication
            app.UseAuthentication();
            app.UseAuthorization();

我如何正确地将JWT声明绑定到用户的声明？

如果用户空白，我如何通过[授权]？

感谢您的帮助！

Answer 1

您需要使用IHttpContextAccessor并在configure services方法中注册依赖项。