IApplicationBuilder 不包含定义 UseEndpoints。 app.UseEndpoints(...) 无法在 ASP.NET 核心上工作

IApplicaionBuilder dos not contain a definition UseEndpoints. app.UseEndpoints(...) not workin on ASP.NET CORE

我正在尝试将 signalR 合并到我的项目中,但是当我尝试使用 app.UseEndpoints(...) 时,它给我一个错误提示“IApplicationBuilder 不包含 UserEndpoints。这是代码在我的 StartUp class:

    // This method gets called by the runtime. Use this method to configure the HTTP request pipeline.
    public void Configure(IApplicationBuilder app, IHostingEnvironment env)
    {


        if (env.IsDevelopment())
        {
            app.UseDeveloperExceptionPage();
            app.UseDatabaseErrorPage();
        }
        else
        {
            app.UseExceptionHandler("/Home/Error");
            app.UseHsts();
        }


        app.UseHttpsRedirection();
        app.UseStaticFiles();
        app.UseCookiePolicy();

        app.UseAuthentication();

        //SIGNAL R - ERROR
        app.UseEndpoints(endpoints =>
        {
            endpoints.MapHub<ChatHub>("/myHub");
        });



        app.UseMvc(routes =>
        {
            routes.MapRoute(
                name: "default",
                template: "{controller=Home}/{action=Index}/{id?}");
        });
    }
}

我该怎么办?

我的中心:

 public class MyHub : Microsoft.AspNet.SignalR.Hub
   {
    public async Task PostMarker(string latitude, string longitude) 
    {
        await Clients.All.SendAsync("ReceiveLocation", latitude, longitude);
    }
}

根据您的评论,您的目标是 .NET Core 2.1,但是 the UseEndpoints extension method was introduced in 3.0

要在 2.1 中添加 SignalR,首先确保您的 ConfigureServices 方法中有 services.AddSignalR();。其次,你应该在 Configure 方法中使用 app.UseSignalR,而不是 UseEndpoints.

像这样:

app.UseSignalR(route =>
{
    route.MapHub<MyHub>("/myHub");
});