在IIS服务器上的PUT API调用期间不会触发Application_BeginRequest

Question

背景

我有一个带有WebAPI组件的MVC应用程序.我正在使用jQuery和AJAX来传递和接收来自WebAPI的数据.我依赖于在每次调用期间触发的Application_BeginRequest来执行一些平凡的任务.

问题

Application_BeginRequest始终触发对WebAPI的GET和POST调用.然而,当我做PUT调用的WebAPI的的Application_BeginRequest并没有开火,导致应用程序无法运行任务.实际上接收到PUT调用,因为正在执行控制器中的相应方法.

我在我的web.config文件中启用了PUT(如下所示).如何启用PUT方法调用以触发Application_BeginRequest方法？

注意: Application_BeginRequest在使用IIS Express时触发PUT调用,但在使用完整版本的IIS时则不触发.

项目:完整的项目可以在这里下载:BeginRequestFail.zip

Web.Config中

<?xml version="1.0" encoding="utf-8"?>
<configuration>

  <system.web>
    <compilation debug="true" targetFramework="4.5" />
    <pages>
      <namespaces>
        <add namespace="System.Web.Helpers" />
        <add namespace="System.Web.Mvc" />
        <add namespace="System.Web.Mvc.Ajax" />
        <add namespace="System.Web.Mvc.Html" />
        <add namespace="System.Web.Optimization" />
        <add namespace="System.Web.Routing" />
        <add namespace="System.Web.WebPages" />
      </namespaces>
    </pages>
  </system.web>
  <system.webServer>
    <httpErrors errorMode="Custom" existingResponse="PassThrough">
      <remove statusCode="404" subStatusCode="-1" />
      <remove statusCode="403" subStatusCode="-1" />
      <remove statusCode="500" subStatusCode="-1" />
      <error statusCode="404" path="/Error/404" responseMode="ExecuteURL" />
      <error statusCode="403" path="/Error/403" responseMode="ExecuteURL" />
      <error statusCode="500" path="/Error/500" responseMode="ExecuteURL" />
    </httpErrors>
    <validation validateIntegratedModeConfiguration="false" />
    <modules>
      <remove name="UrlRoutingModule-4.0" />
      <add name="UrlRoutingModule-4.0" type="System.Web.Routing.UrlRoutingModule" preCondition="" />
      <remove name="WebDAVModule"/>
    </modules>
    <handlers>
      <remove name="ExtensionlessUrlHandler-ISAPI-4.0_32bit" />
      <remove name="ExtensionlessUrlHandler-ISAPI-4.0_64bit" />
      <remove name="ExtensionlessUrlHandler-Integrated-4.0" />
      <add name="ExtensionlessUrlHandler-ISAPI-4.0_32bit" path="*." verb="GET,HEAD,POST,DEBUG,PUT,DELETE,PATCH,OPTIONS" modules="IsapiModule" scriptProcessor="%windir%\Microsoft.NET\Framework\v4.0.30319\aspnet_isapi.dll" preCondition="classicMode,runtimeVersionv4.0,bitness32" responseBufferLimit="0" />
      <add name="ExtensionlessUrlHandler-ISAPI-4.0_64bit" path="*." verb="GET,HEAD,POST,DEBUG,PUT,DELETE,PATCH,OPTIONS" modules="IsapiModule" scriptProcessor="%windir%\Microsoft.NET\Framework64\v4.0.30319\aspnet_isapi.dll" preCondition="classicMode,runtimeVersionv4.0,bitness64" responseBufferLimit="0" />
      <add name="ExtensionlessUrlHandler-Integrated-4.0" path="*." verb="GET,HEAD,POST,DEBUG,PUT,DELETE,PATCH,OPTIONS" type="System.Web.Handlers.TransferRequestHandler" preCondition="integratedMode,runtimeVersionv4.0" />
    </handlers>
  </system.webServer>
  <runtime>
    <assemblyBinding xmlns="urn:schemas-microsoft-com:asm.v1">
      <dependentAssembly>
        <assemblyIdentity name="DotNetOpenAuth.Core" publicKeyToken="2780ccd10d57b246" />
        <bindingRedirect oldVersion="1.0.0.0-4.0.0.0" newVersion="4.1.0.0" />
      </dependentAssembly>
      <dependentAssembly>
        <assemblyIdentity name="DotNetOpenAuth.AspNet" publicKeyToken="2780ccd10d57b246" />
        <bindingRedirect oldVersion="1.0.0.0-4.0.0.0" newVersion="4.1.0.0" />
      </dependentAssembly>
      <dependentAssembly>
        <assemblyIdentity name="System.Web.Helpers" publicKeyToken="31bf3856ad364e35" />
        <bindingRedirect oldVersion="1.0.0.0-2.0.0.0" newVersion="2.0.0.0" />
      </dependentAssembly>
      <dependentAssembly>
        <assemblyIdentity name="System.Web.Mvc" publicKeyToken="31bf3856ad364e35" />
        <bindingRedirect oldVersion="1.0.0.0-4.0.0.0" newVersion="4.0.0.0" />
      </dependentAssembly>
      <dependentAssembly>
        <assemblyIdentity name="System.Web.WebPages" publicKeyToken="31bf3856ad364e35" />
        <bindingRedirect oldVersion="1.0.0.0-2.0.0.0" newVersion="2.0.0.0" />
      </dependentAssembly>
      <dependentAssembly>
        <assemblyIdentity name="WebGrease" publicKeyToken="31bf3856ad364e35" />
        <bindingRedirect oldVersion="1.0.0.0-1.3.0.0" newVersion="1.3.0.0" />
      </dependentAssembly>
        <dependentAssembly>
          <assemblyIdentity name="System.Web.Mvc" publicKeyToken="31bf3856ad364e35" culture="neutral" />
          <bindingRedirect oldVersion="0.0.0.0-4.0.0.0" newVersion="4.0.0.0" />
        </dependentAssembly>
      </assemblyBinding>
  </runtime>
</configuration>

的Global.asax.cs

protected void Application_BeginRequest(object sender, EventArgs e) //Not triggered with PUT
        {
            Application["BeginRequest"] = _Scounter++;
        }

Answer 1

你的代码有效。不确定你的计数器，所以我将其更改为：

public class MvcApplication : System.Web.HttpApplication
{
    public static int BeginRequestCounter = 0;

    protected void Application_BeginRequest(object sender, EventArgs e)
    {
        BeginRequestCounter++;
    }
}

（删除其他代码以指出我更改的内容）

<p>@BeginRequestFail.MvcApplication.BeginRequestCounter</p>

请记住，当您执行 AJAX 调用时，页面上的计数器不会更新 - 刷新页面后您将看到计数器已正确增加。

但不确定为什么要在 Mvc 项目中引用 WebApi 项目？我要么把它们分开，要么把它们合二为一，以避免出现任何奇怪的情况。就我个人而言，我的 WebApi 将是完全独立的，因为它不应该与任何其他 Web 应用程序有任何关系 - 至少这是我设计数据 API 的方式。