HttpContext.Session.SetString在.net Core 3.1中不起作用

如何解决HttpContext.Session.SetString在.net Core 3.1中不起作用

我在使用的会话中添加字符串

HttpContext.Session.SetString("CaptchaCode",result.CaptchaCode);

但是当我想通过以下方式获得价值时返回null：

context.Session.GetString("CaptchaCode");

.net core 3.1的解决方案是什么？

这是我的Startup.cs ConfigureServices和Configure：

        public void Configure(IApplicationBuilder app,IWebHostEnvironment env)
        {
            if (env.IsDevelopment())
            {
                app.UseDeveloperExceptionPage();
            }
            else
            {
                app.UseExceptionHandler(builder =>
                {
                    builder.Run(async context =>
                    {
                        context.Response.StatusCode = (int)HttpStatusCode.InternalServerError;
                        var error = context.Features.Get<IExceptionHandlerFeature>();
                        if (error != null)
                        {
                            context.Response.AddApplicationError(error.Error.Message);
                            await context.Response.WriteAsync(error.Error.Message);
                        }
                    });
                });
            }

            app.UseSession();
            app.UseAuthentication();
            app.UseCors(x => x.AllowAnyOrigin().AllowAnyMethod().AllowAnyHeader());
            app.UseDefaultFiles();
            app.UseStaticFiles();
            FileExtensionContentTypeProvider contentTypes = new FileExtensionContentTypeProvider();
            app.UseStaticFiles();
            app.UseResponseCompression();
            app.UseMvc();
            app.UseRouting();
            app.UseAuthorization();
            app.UseEndpoints();

        }

这是我的ConfigureService：

public void ConfigureServices(IServiceCollection services)
        {
            services.AddDbContext<>(options => options
            .UseSqlServer(Configuration.GetConnectionString("")));
            services.AddMvc(option => option.EnableEndpointRouting = false)
            .AddNewtonsoftJson(options => { options.SerializerSettings.ReferenceLoopHandling = Newtonsoft.Json.ReferenceLoopHandling.Ignore; });
            services.AddAutoMapper(typeof(Startup));
            services.AddCors();
            services.AddAuthentication(JwtBearerDefaults.AuthenticationScheme).AddJwtBearer(options =>
            {
                options.TokenValidationParameters = new TokenValidationParameters
                {
                    ValidateIssuerSigningKey = true,IssuerSigningKey = new SymmetricSecurityKey(Encoding.ASCII.GetBytes(Configuration.GetSection("AppSettings:Token").Value)),ValidateIssuer = false,ValidateAudience = false
                };
            });
            services.Configure<GzipCompressionProviderOptions>(options =>
                {
                    options.Level = CompressionLevel.Optimal;
                });
            services.AddResponseCompression(options =>
                {
                    options.EnableForHttps = true;
                    options.Providers.Add<GzipCompressionProvider>();
                });
            services.AddControllers();

            services.AddRazorPages()
            .AddNewtonsoftJson();

            services.AddDistributedMemoryCache();
            services.AddHttpContextAccessor();
            services.Configure<CookiePolicyOptions>(options =>
            {
                options.CheckConsentNeeded = context => false;
                options.MinimumSameSitePolicy = SameSiteMode.None;
            });
            services.AddSession(options =>
            {
                options.IdleTimeout = TimeSpan.FromMinutes(20);
                options.Cookie.HttpOnly = true;
                options.Cookie.IsEssential = true;
            });
            // Add the processing server as IHostedService
            services.AddHttpClient();

            //services
            services.AddScoped<IAuthService,AuthService>();
            services.AddScoped<IEventService,EventService>();
            services.AddScoped<IFileUploadService,FileUploadService>();
            services.AddScoped<IOrganizerService,OrganizerService>();
            services.AddScoped<IPanelService,PanelService>();
            services.AddScoped<IHomeService,HomeService>();

            //repository
            services.AddScoped<IAuthRepository,AuthRepository>();
            services.AddScoped<IEventRepository,EventRepository>();
            services.AddScoped<IOrganizerRepository,OrganizerRepository>();
            services.AddScoped<IPanelRepository,PanelRepository>();
            services.AddScoped<IHomeRepository,HomeRepository>();

        }

我完全配置了会话，但直到对我不起作用。 我强调我在.net core 3.1中工作

解决方法

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