C# ASP.NET Core 5.0 - 为什么在使用 [Authorization] 时甚至不调用该方法

Question

我有 JWT 令牌和 API。

在 startup.cs - 我有 jwt 授权的配置：

public void ConfigureServices(IServiceCollection services)
        {
            SetupJWTServices(services);
            services.AddControllers();
            services.AddSwaggerGen(c =>
            {
                c.SwaggerDoc("v3", new OpenApiInfo { Title = "MyTitle", Version = "v3" });
                c.OperationFilter<AddSwaggerService>();
                c.AddSecurityDefinition("Bearer", new OpenApiSecurityScheme
                {
                    Description = "JWT Token authorization",
                    Name = "Authorization",
                    In = ParameterLocation.Header,
                    Type = SecuritySchemeType.ApiKey,
                });
            }
            );
        }
private static void SetupJWTServices(IServiceCollection services)
        {
            string key = "secret Public key Token";      
            var issuer = "myIssuer";
            byte[] publicKey = Convert.FromBase64String(key);
            var ecdsa = ECDsa.Create();
            ecdsa.ImportSubjectPublicKeyInfo(source: publicKey, bytesRead: out _);            
services.AddAuthentication(JwtBearerDefaults.AuthenticationScheme).AddJwtBearer(options =>
            {
                options.TokenValidationParameters = new TokenValidationParameters
                {
                    ValidateIssuer = true,
                    ValidateAudience = false,
                    ValidateIssuerSigningKey = true,
                    ValidIssuer = issuer,
                    ValidAudience = issuer,
                    IssuerSigningKey = new ECDsaSecurityKey(ecdsa),
                    ValidAlgorithms = new[]
                    {
                        @"ES256"
                    }
                };
                options.Events = new JwtBearerEvents
                {
                    OnAuthenticationFailed = context =>
                    {
                        if (context.Exception.GetType() == typeof(SecurityTokenExpiredException))
                        {
                            context.Response.Headers.Add("Token-Expired", "true");
                        }
                        return Task.CompletedTask;
                    }
                };
            });
        }
public void Configure(IApplicationBuilder app, IWebHostEnvironment env)
        {
            if (env.IsDevelopment())
            {
                app.UseDeveloperExceptionPage();
                app.UseSwagger();
                app.UseSwaggerUI(c => {
                    c.SwaggerEndpoint("/swagger/v3/swagger.json", "MyAPIService");
                });
            }
            app.UseHttpsRedirection();
            app.UseRouting();
            app.UseAuthorization();
            app.UseAuthentication();
            app.UseEndpoints(endpoints =>
            {
                endpoints.MapControllers();
            });
        }

然后我在控制器中得到了方法，我称之为：

[Authorize]
        [HttpGet("CreateNewPassword")]
        public IActionResult CreateNewPassword(string Password)
        {
            if (User.Identity.IsAuthenticated)
            {
                if (User.Identity is ClaimsIdentity identity)
                {
                    _ = identity.Claims;
                }
                return Json(new { YourNewHashedPassword = Helpers.GetNewHashedText(Password) });
            }
            else
            {
                return Json(new { ErrorMessage = "JWT is invalid!" });
            }
        }

问题是：

如果我将 [Authorize] 放在方法上方 - 调用时甚至不执行该方法（来自 swagger 和来自邮递员的相同行为）并自动为 401 returned

如果我删除 [Authorize] 行为是 - 根据 JWT 令牌是正确的 - 所以如果 JWT 来自 POSTMAN 无效 - 它 returns 401 with ErrorMessage（没问题） - 如果 JWT来自 POSTMAN 的令牌是可以的 - 它 return 是一个新密码（这只是我的测试方法）

但是！当我删除 [Authorize] 并从 swagger 执行调用时 - 总是有消息 401（没有错误消息） - 因为缺少带有 JWT 令牌的 header。

问题是：

我如何使用 [Authorize] - 因此 swagger 和邮递员将正确执行该方法：当 JWT 正确时 = 它将以常规方式执行当 JWT 无效时 = 它将 return 401...

Answer 1

好像认证授权中间件的顺序不对。你先有 UseAuthorization。

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

试试这个：

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

C# ASP.NET Core 5.0 - 为什么在使用 [Authorization] 时甚至不调用该方法

C# ASP.NET Core 5.0 - Why the method is not even called, when [Authorization] is used

c#

authentication

authorization

jwt

asp.net-core