使用有效的JWT令牌获得401未经授权

Question

我建立了一个API来注册用户或登录用户。如果用户登录成功，它将返回一个有效小时的JWT令牌。我已经在要从中获取数据的控制器的顶部添加了[Authorize]，但是即使我将令牌添加到请求中，它也会在Postman中不断返回Unauthorized 401。我尝试了人们在其他博客上发表过的所有解决方案，但对我没有任何帮助。有人可以帮我还是有同样的问题？

启动类：

public void ConfigureServices(IServiceCollection services)
        {
            services.AddControllers();
            services.AddSwaggerGen(c =>
            {
                c.SwaggerDoc("v1", new Microsoft.OpenApi.Models.OpenApiInfo { Title = "AuthApi", Version = "v1" });
            });
            services.AddControllers().AddNewtonsoftJson(options =>
                options.SerializerSettings.ReferenceLoopHandling = Newtonsoft.Json.ReferenceLoopHandling.Ignore
            );
            services.AddCors(c =>
                    {
                        c.AddPolicy("def", builder =>
                        {
                            builder.WithOrigins("http://localhost:4200").AllowAnyMethod().AllowAnyHeader().AllowCredentials();
                        });
                    });


            // For Entity Framework  
            services.AddDbContext<ApplicationDbContext>(options => options.UseSqlServer(Configuration.GetConnectionString("DefaultConnection")));

            // For Identity  
            services.AddIdentity<ApplicationUser, IdentityRole>(o =>
            {
                // configure identity options
                o.Password.RequireDigit = false;
                o.Password.RequireLowercase = false;
                o.Password.RequireUppercase = false;
                o.Password.RequireNonAlphanumeric = false;
                o.Password.RequiredLength = 6;
            })
                .AddEntityFrameworkStores<ApplicationDbContext>()
                .AddDefaultTokenProviders();

            // Adding Authentication  
            services.AddAuthentication(options =>
            {
                options.DefaultAuthenticateScheme = JwtBearerDefaults.AuthenticationScheme;
                options.DefaultChallengeScheme = JwtBearerDefaults.AuthenticationScheme;
                options.DefaultScheme = JwtBearerDefaults.AuthenticationScheme;
            })

            // Adding Jwt Bearer  
            .AddJwtBearer(options =>
            {
                options.SaveToken = true;
                options.RequireHttpsMetadata = false;
                options.TokenValidationParameters = new TokenValidationParameters()
                {
                    ValidateIssuer = true,
                    ValidateAudience = true,
                    ValidAudience = Configuration["JWT:ValidAudience"],
                    ValidIssuer = Configuration["JWT:ValidIssuer"],
                    IssuerSigningKey = new SymmetricSecurityKey(Encoding.UTF8.GetBytes(Configuration["JWT:Secret"]))
                };
            });
        }

        // This method gets called by the runtime. Use this method to configure the HTTP request pipeline.
        public void Configure(IApplicationBuilder app, IWebHostEnvironment env)
        {
            if (env.IsDevelopment())
            {
                app.UseDeveloperExceptionPage();
            }

            app.UseSwagger();

            app.UseSwaggerUI(c =>
            {
                c.SwaggerEndpoint("swagger/v1/swagger.json", "LoginAPI v1");
                c.RoutePrefix = string.Empty;
            });

            app.UseCors("def");

            app.UseHttpsRedirection();

            app.UseRouting();

            app.UseAuthentication();

            app.UseAuthorization();

            app.UseEndpoints(endpoints =>
            {
                endpoints.MapControllers();
            });
        }

我想从以下类中检索数据的控制器类

namespace auth.Controllers
{
    [Authorize]
    [ApiController]
    [Route("[controller]")]
    public class WeatherForecastController : ControllerBase
    {
        private static readonly string[] Summaries = new[]
        {
            "Freezing", "Bracing", "Chilly", "Cool", "Mild", "Warm", "Balmy", "Hot", "Sweltering", "Scorching"
        };

        private readonly ILogger<WeatherForecastController> _logger;

        public WeatherForecastController(ILogger<WeatherForecastController> logger)
        {
            _logger = logger;
        }

        [HttpGet]
        public IEnumerable<WeatherForecast> Get()
        {
            var rng = new Random();
            return Enumerable.Range(1, 5).Select(index => new WeatherForecast
            {
                Date = DateTime.Now.AddDays(index),
                TemperatureC = rng.Next(-20, 55),
                Summary = Summaries[rng.Next(Summaries.Length)]
            })
            .ToArray();
        }
    }
}

我的身份验证控制器，用于登录用户：

        [HttpPost]
        [Route("login")]
        public async Task<IActionResult> Login([FromBody] LoginModel model)
        {
            // Finds and returns a user, if any, who has the specified user name.
            var user = await userManager.FindByNameAsync(model.Username);

            // Checks if username was valid to an user and
            // returns a flag indicating whether the given password is valid for the specified user.
            if (user != null && await userManager.CheckPasswordAsync(user, model.Password))
            {
                // Gets a list of role names the specified user belongs to.
                var userRoles = await userManager.GetRolesAsync(user);

                var authClaims = new List<Claim>
                {
                    new Claim(ClaimTypes.Name, user.UserName),
                    new Claim(JwtRegisteredClaimNames.Jti, Guid.NewGuid().ToString())
                };

                // Loop through the user roles
                // Add all userRoles as a claim to authClaims 
                foreach (var userRole in userRoles)
                {
                    authClaims.Add(new Claim(ClaimTypes.Role, userRole));
                }

                // Generates a key to sign in
                var authSigninKey = new SymmetricSecurityKey(Encoding.UTF8.GetBytes(_configuration["JWT:Secret"]));

                // Create the token
                var token = new JwtSecurityToken(
                    issuer: _configuration["JWT:ValidIssuer"],
                    audience: _configuration["JWT:Audience"],
                    expires: DateTime.Now.AddHours(3),
                    claims: authClaims,
                    signingCredentials: new SigningCredentials(authSigninKey, SecurityAlgorithms.HmacSha256)
                );

                return Ok(new
                {
                    token = new JwtSecurityTokenHandler().WriteToken(token),
                    SecurityTokenNoExpirationException = token.ValidTo
                });
            }
            return Unauthorized();
        }

输出：

Appsettings.json：