Web API + jQuery AJAX DELETE 请求返回 404

Question

我的 ASP.NET WebAPI 和 MVC 应用程序在我请求 PUT 或 DELETE 时返回 404 错误。它曾经返回 405，但我通过启用 CORS 解决了这个问题。我尝试了各种不同的解决方案（禁用 WebDAV、更改路由、将查询字符串放入请求中），但 none 似乎对我有用。我希望我只是错过了一些非常简单的事情。这是我应用程序中每个相关文件的相关简化代码：

jQuery AJAX 请求：

$.ajax({
    url: "api/Signout?id=3",
    type: "DELETE",
    crossDomain: true,
});

SignoutController（GET 和 POST 方法在这里工作得很好）：

public void Delete([FromUri] int id)
{
    //Do things
}

WebApiConfig 路由：

config.Routes.MapHttpRoute(
    name: "DefaultApi",
    routeTemplate: "api/{controller}/{id}",
    defaults: new { id = RouteParameter.Optional }
);

//For another part of the application
config.Routes.MapHttpRoute(
    name: "SaveSignout",
    routeTemplate: "api/{controller}/{signout}"
);

Web.config:

<system.webServer>
  <httpProtocol>
    <customHeaders>
      <clear />
      <add name="Access-Control-Allow-Origin" value="*" />
      <add name="Access-Control-Allow-Headers" value="Origin, X-Requested-With, Content-Type, Accept" />
      <add name="Access-Control-Allow-Methods" value="GET, POST, PUT, DELETE, OPTIONS" />
    </customHeaders>
  </httpProtocol>
  <modules>
    <remove name="FormsAuthenticationModule" />
    <remove name="WebDAVModule"/>
  </modules>
  <handlers>
    <remove name="WebDAV" />
    <remove name="ExtensionlessUrlHandler-ISAPI-4.0_64bit" />
    <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" />
  </handlers>
</system.webServer>

RouteConfig.cs（在其他地方看到过）

routes.IgnoreRoute("{*x}", new { x = @".*\.asmx(/.*)?" });

Fiddler DELETE 请求（简化引用）：

DELETE /api/Signout?id=45 HTTP/1.1
Host: localhost:51301
Connection: keep-alive
Cache-Control: no-cache
Authorization: Negotiate (large base64 here)
Pragma: no-cache
Accept: */*
Origin: http://localhost:51301
User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/33.0.1750.154 Safari/537.36
Referer: http://localhost:51301/Home/Controller/Id
Accept-Encoding: gzip,deflate,sdch
Accept-Language: en-US,en;q=0.8

Fiddler 响应：

HTTP/1.1 404 Not Found
Cache-Control: private
Content-Type: text/html; charset=utf-8
Server: Microsoft-IIS/8.0
X-SourceFiles: =?UTF-8?B? (base64 of full local path to api/Signout)
Persistent-Auth: true
Access-Control-Allow-Origin: *
Access-Control-Allow-Headers: Origin, X-Requested-With, Content-Type, Accept
Access-Control-Allow-Methods: GET, POST, PUT, DELETE, OPTIONS
WWW-Authenticate: Negotiate oRswGaADCgEAoxIEEAEAAABDh+CIwTbjqQAAAAA=
Date: Tue, 17 Feb 2015 18:05:18 GMT
Content-Length: 4966

这只是一系列不同的 "solutions" 我发现所有这些显然对相关人员都有效。我哪里错了？

Answer 1

默认情况下，IIS 不处理 DELETE 请求：Web.Config 中定义的 system.webServer 处理程序可以设置当您网站的应用程序池具有 "Managed pipeline mode" 集成（IIS7 ) 或经典（ISAPI 32 和 64 位版本）。在您的示例中，仅控制 ISAPI 64 位。下面显示了其他变体。

<system.webServer>
    <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>

参考：

Related Answer on SO
Extensionless URL Handler Background on MSDN Blog
Background on Classic/ISAPI vs Integrated on SO

Answer 2

Richaux 是正确的，IIS 默认不处理 DELETE、PUT 和其他请求。但是，该答案中的 Web.config 部分显示了它是如何在 MVC4 模板中完成的。从 MVC5 模板创建 MVC5 Web API 项目时，您将看到为所有动词注册处理程序的相关部分：

<system.webServer>
   <handlers>
      <remove name="ExtensionlessUrlHandler-Integrated-4.0" />
      <remove name="OPTIONSVerbHandler" />
      <remove name="TRACEVerbHandler" />
      <add name="ExtensionlessUrlHandler-Integrated-4.0" path="*." verb="*" type="System.Web.Handlers.TransferRequestHandler" preCondition="integratedMode,runtimeVersionv4.0" />
   </handlers>
</system.webServer>

Web API + jQuery AJAX DELETE 请求返回 404

Web API + jQuery AJAX DELETE request returning 404

c#

asp.net-mvc

asp.net-web-api