Asp.net mvc MVC两个Html.Action在一个视图中

我正在使用MVC 5，最近遇到了一个问题：

我有一个控制器[HomeController]和一个带有2个Partial1和Partial2的视图。 我尝试使用Html.Action命令呈现这两个部分（因为我希望调用相应的操作）

所有操作都在HomeController中

该代码在本地主机和开发环境（Visual Studio 2015）上运行良好。 当我在Azure上发布项目时，在尝试执行视图时出现以下错误：

A single instance of controller 'HomeController' cannot be used to handle
multiple requests. If a custom controller factory is in use, make sure that
it creates a new instance of the controller for each request.  

我尝试在“部分”操作上使用[ChildActionOnly]并返回PartialViewResult，但没有成功

我知道我可以使用RenderPartial，但是，因为我想进行数据库调用来初始化部分，所以我需要使用Html.Action

对这个问题有什么想法吗

代码

看法

---

我最好的猜测是，您正在使用IoC（控制反转）模式，并且确实使用IoC容器（Castle Windsor、Autofac等）实例化了控制器。这是真的吗？如果是，请确保控制器未注册为单例，或者其生存期不是“每个web请求”。每次需要新控制器时，都应该对其进行实例化，即其寿命应该是短暂的（用温莎城堡的术语来说）。

经过长时间的研究和多次测试后，答案总是这么简单：

清理->重建（本地）

发布->选中“在目标位置删除其他文件”（以清除azure上的项目应用程序）

---

非常感谢你的回答和努力

发布您的代码-

HomeController

，以及所有视图。您是否使用DI（依赖注入/控制反转）容器-例如Castle Windsor？我添加了一些代码和更多信息。这个错误是来自WebAPI项目还是MVC项目？您提到正在使用StructureMap—这是用于MVC和WebAPI，还是仅用于WebAPI？如果是这种情况，最好查看注册。StructureMap仅由WebAPI项目使用。错误来自MVC，而不是WebAPI。而且只有当它发布在Azure上，而不是在Dev Env上时。

public ActionResult ParentView()
{
    return View();
}

[ChildActionOnly]
public PartialViewResult _ChildView1()
{
   WebApi Client3 = new WebApi();

   Guid currentId = Guid.Empty;
   if (Session["CurrentId"] != null)
   {
        currentId = (Guid)Session["CurrentId"];
   }

   ResponseList retModel = Client3 .GetThingsFromDB(currentId);

   return PartialView("~/Views/Home/Folder/_View1.cshtml", retModel);
}

[ChildActionOnly]
public PartialViewResult _ChildView2()
{
   WebApi Client3 = new WebApi();

   Guid currentId = Guid.Empty;
   if (Session["CurrentId"] != null)
   {
        currentId = (Guid)Session["CurrentId"];
   }

   ResponseList retModel = Client3.GetThingsFromDB(currentId);

   return PartialView("~/Views/Home/Folder/_View2.cshtml", retModel);
}

<div class="seperator">
@{
    Html.RenderAction("_ChildView1","Home");
}
</div>

<div class="seperator">
@{
    Html.RenderAction("_ChildView2","Home");                            
}
</div>

using Microsoft.AspNet.Identity;
using Microsoft.Owin;
using Microsoft.Owin.Security.Cookies;
using Microsoft.Owin.Security.Facebook;
using Microsoft.Owin.Security.Google;
using Owin.Security.Providers.Instagram;
using Newtonsoft.Json.Linq;
using Owin;
using System;
using System.Net.Http;
using System.Security.Claims;
using System.Threading.Tasks;
using System.Web.Helpers;
using System.Configuration;

    [assembly: OwinStartup(typeof(Startup))]
    namespace WebPortal
    {
        public partial class Startup
    {
        public void Configuration(IAppBuilder app)
        {
            ConfigureAuth(app);
        }

        public void ConfigureAuth(IAppBuilder app)
        {
            app.UseCookieAuthentication(new CookieAuthenticationOptions
            {
                AuthenticationType = DefaultAuthenticationTypes.ApplicationCookie,
                LoginPath = new PathString("/Authorize/Login")
            });


            app.UseExternalSignInCookie(DefaultAuthenticationTypes.ExternalCookie);

            var fbOptions = new FacebookAuthenticationOptions
            {
                Provider = new YoohBridgeFacebookAuthenticationProvider(),
                SignInAsAuthenticationType = DefaultAuthenticationTypes.ExternalCookie,
                AppId = ConfigurationManager.AppSettings["facebook.clientid"].ToString(),
                AppSecret = ConfigurationManager.AppSettings["facebook.clientsecret"].ToString(),
                BackchannelHttpHandler = new FacebookBackChannelHandler(),
                UserInformationEndpoint = "https://graph.facebook.com/v2.4/me?fields=id,name,email,first_name,last_name,location"
            };



            app.UseFacebookAuthentication(fbOptions);

            app.UseGoogleAuthentication(new GoogleOAuth2AuthenticationOptions()
            {
                ClientId = ConfigurationManager.AppSettings["google.clientid"].ToString(),
                ClientSecret = ConfigurationManager.AppSettings["google.clientsecret"].ToString()
            });



            AntiForgeryConfig.UniqueClaimTypeIdentifier = ClaimTypes.NameIdentifier;
        }
    }

    public class MyFacebookAuthenticationProvider : FacebookAuthenticationProvider
    {
        public MyFacebookAuthenticationProvider() : base() { }

        public override void ApplyRedirect(FacebookApplyRedirectContext context)
        {
            context.Response.Redirect(context.RedirectUri + "&display=popup");
        }
    }

    public class FacebookBackChannelHandler : HttpClientHandler
    {
        protected override async System.Threading.Tasks.Task<HttpResponseMessage> SendAsync(HttpRequestMessage request, System.Threading.CancellationToken cancellationToken)
        {
            if (!request.RequestUri.AbsolutePath.Contains("/oauth"))
            {
                request.RequestUri = new Uri(request.RequestUri.AbsoluteUri.Replace("?access_token", "&access_token"));
            }

            return await base.SendAsync(request, cancellationToken);
        }
    }
}

at System.Web.WebPages.WebPageExecutingBase.NormalizeLayoutPagePath(String layoutPagePath)
   at System.Web.WebPages.WebPageBase.PopContext()
   at System.Web.WebPages.WebPageBase.ExecutePageHierarchy(WebPageContext pageContext, TextWriter writer, WebPageRenderingBase startPage)
   at System.Web.Mvc.RazorView.RenderView(ViewContext viewContext, TextWriter writer, Object instance)
   at System.Web.Mvc.BuildManagerCompiledView.Render(ViewContext viewContext, TextWriter writer)
   at System.Web.Mvc.ViewResultBase.ExecuteResult(ControllerContext context)
   at System.Web.Mvc.ControllerActionInvoker.InvokeActionResult(ControllerContext controllerContext, ActionResult actionResult)
   at System.Web.Mvc.Async.AsyncControllerActionInvoker.<>c__DisplayClass21.<BeginInvokeAction>b__1e(IAsyncResult asyncResult)
   at System.Web.Mvc.Async.AsyncResultWrapper.WrappedAsyncResult`1.CallEndDelegate(IAsyncResult asyncResult)
   at System.Web.Mvc.Async.AsyncResultWrapper.WrappedAsyncResultBase`1.End()
   at System.Web.Mvc.Async.AsyncControllerActionInvoker.EndInvokeAction(IAsyncResult asyncResult)
   at System.Web.Mvc.Controller.<BeginExecuteCore>b__1d(IAsyncResult asyncResult, ExecuteCoreState innerState)
   at System.Web.Mvc.Async.AsyncResultWrapper.WrappedAsyncVoid`1.CallEndDelegate(IAsyncResult asyncResult)
   at System.Web.Mvc.Async.AsyncResultWrapper.WrappedAsyncResultBase`1.End()
   at System.Web.Mvc.Controller.EndExecuteCore(IAsyncResult asyncResult)
   at System.Web.Mvc.Controller.<BeginExecute>b__15(IAsyncResult asyncResult, Controller controller)
   at System.Web.Mvc.Async.AsyncResultWrapper.WrappedAsyncVoid`1.CallEndDelegate(IAsyncResult asyncResult)
   at System.Web.Mvc.Async.AsyncResultWrapper.WrappedAsyncResultBase`1.End()
   at System.Web.Mvc.Controller.EndExecute(IAsyncResult asyncResult)
   at System.Web.Mvc.Controller.System.Web.Mvc.Async.IAsyncController.EndExecute(IAsyncResult asyncResult)
   at System.Web.Mvc.MvcHandler.<BeginProcessRequest>b__5(IAsyncResult asyncResult, ProcessRequestState innerState)
   at System.Web.Mvc.Async.AsyncResultWrapper.WrappedAsyncVoid`1.CallEndDelegate(IAsyncResult asyncResult)
   at System.Web.Mvc.Async.AsyncResultWrapper.WrappedAsyncResultBase`1.End()
   at System.Web.Mvc.MvcHandler.EndProcessRequest(IAsyncResult asyncResult)
   at System.Web.Mvc.MvcHandler.System.Web.IHttpAsyncHandler.EndProcessRequest(IAsyncResult result)
   at System.Web.HttpApplication.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute()
   at System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously)