Question

我的ASP.NET WebAPI＆amp;当我请求PUT或DELETE时，MVC应用程序返回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，在请求中放置查询字符串），但似乎没有一个对我有用。我希望我错过了一些非常简单的东西。以下是我的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路线：

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}"
);

的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SO上的其他地方看到了这个）

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

提琴手回应：

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

这只是我遇到的一系列各种“解决方案”，显然对所涉及的人都有效。我哪里错了？

Answer 1

默认情况下，IIS不提供DELETE请求：system.webServer中定义的Web.Config处理程序可以设置当您的网站的应用程序池具有＆＃34;托管管道模式时如何处理请求＃34;集成（IIS7）或经典（ISAPI 32和64位风格）。在您的示例中，仅控制ISAPI 64位。以下显示了其他变体。

<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：

Answer 2

Richaux是正确的，默认情况下IIS不提供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

2 个答案: