ASP.NET 网页 Api "The requested resource does not support http method PUT/DELETE"

ASP.NET Web Api "The requested resource does not support http method PUT/DELETE"

我正在使用 ASP.NET/C# 构建一个 API。但是,在尝试发出 PUT 或 DELETE 请求时,我收到以下错误:

"The requested resource does not support http method PUT (or DELETE)"

我知道这个问题之前已经讨论过;但是,我查看了相关问题的回复(包括this one),但仍未找到解决方案。我已禁用 WebDAV 并确保在 ExtensionlessUrlHanlder 中允许使用动词。我的web.config的"webserver"部分如下:

  <system.webServer>
    <modules>
      <remove name="FormsAuthentication" />
      <remove name="WebDAVModule"/>
      <add name="ErrorLog" type="Elmah.ErrorLogModule, Elmah" preCondition="managedHandler" />
      <add name="ErrorMail" type="Elmah.ErrorMailModule, Elmah" preCondition="managedHandler" />
      <add name="ErrorFilter" type="Elmah.ErrorFilterModule, Elmah" preCondition="managedHandler" />
    </modules>
    <httpProtocol>
      <customHeaders>
        <add name="Access-Control-Allow-Methods" value="GET, POST, PUT, DELETE, OPTIONS" />
      </customHeaders>
    </httpProtocol>
    <handlers>
      <remove name="ExtensionlessUrlHandler-Integrated-4.0" />
      <remove name="OPTIONSVerbHandler" />
      <remove name="WebDAV" />
      <remove name="TRACEVerbHandler" />
      <add name="ExtensionlessUrlHandler-Integrated-4.0" path="*." verb="*" type="System.Web.Handlers.TransferRequestHandler" preCondition="integratedMode,runtimeVersionv4.0" />
    </handlers>
  <validation validateIntegratedModeConfiguration="false" />
</system.webServer>

控制器如下:

namespace MidamAPI.Controllers
{
    [RoutePrefix("SupplyItems")] 
    public class SupplyItemsController : ApiController
    {
        UnitOfWork worker = new UnitOfWork();

        [Route("")]
        [HttpGet]
        public string Get()
        {
            IEnumerable<SupplyItemsDTO> dtoList =  Mapper.Map<List<SupplyItem>, List<SupplyItemsDTO>>(worker.SupplyItemRepo.Get().ToList());
            return JsonConvert.SerializeObject(dtoList);
        }

        [Route("{propertyType}")]
        public string Get(String propertyType = "BK")
        {
                 IEnumerable<SupplyItemsDTO> dtoList = null;
            if (propertyType.Equals("POPEYES", StringComparison.CurrentCultureIgnoreCase))
            {dtoList  = Mapper.Map<List<PopeyesSupplyItem>, List<SupplyItemsDTO>>(worker.PopeyesItemRepo.Get().ToList());

            }
            dtoList = Mapper.Map<List<BKSupplyItem>, List<SupplyItemsDTO>>(worker.BKItemRepo.Get().ToList());


            return JsonConvert.SerializeObject(dtoList);
        }

        [Route("{id:int}")]
        public string Get(int id)
        {
            SupplyItemsDTO dto = Mapper.Map<SupplyItem, SupplyItemsDTO>(worker.SupplyItemRepo.GetByID(id)); 

            return JsonConvert.SerializeObject(dto);
        }

           [Route("")]
           [HttpPost]
        public HttpResponseMessage Post([FromBody]SupplyItem itm)
        {
            try
            {
                worker.SupplyItemRepo.Insert(itm);
                worker.Save();
                return Request.CreateResponse(HttpStatusCode.OK, itm);
            }
            catch (Exception ex)
            {
                return Request.CreateResponse(HttpStatusCode.BadRequest, ex);
            }

        }

                 [Route("")]
           [HttpDelete]
           public HttpResponseMessage Delete(int id)
           {
               try
               {
                   SupplyItem itm = worker.SupplyItemRepo.GetByID(id);
                   worker.SupplyItemRepo.Delete(itm);
                   worker.Save();
                   return Request.CreateResponse(HttpStatusCode.OK, itm);
               }
               catch(Exception ex)
               {
                   return Request.CreateResponse(HttpStatusCode.BadRequest, ex);
               }
           }

        [Route("")]
        [HttpPut]
        public HttpResponseMessage Put(int id, SupplyItem item) {
            try
            {
                item.ID = id;
                worker.SupplyItemRepo.Update(item);
                return Request.CreateResponse(HttpStatusCode.OK, item);
            }
            catch(Exception ex)
            {
                return Request.CreateResponse(HttpStatusCode.BadRequest, ex);
            }
        }
    }
}

GET 和 POST 调用按预期工作。我不想更改 applicationhost.config 文件,真的不想以任何方式修改 Web 服务器(因为这是我的开发机器),或者使用可能代表安全漏洞的 headers。

响应headers:

    Access-Control-Allow-Credentials →true
Access-Control-Allow-Headers →Origin, X-Requested-With, Content-Type, Accept, X-Token,Authorization
Access-Control-Allow-Methods →GET, POST, PUT, DELETE, OPTIONS
Access-Control-Allow-Methods →GET, POST, PUT, DELETE, OPTIONS
Access-Control-Allow-Origin →*
Allow →GET
Cache-Control →no-cache
Content-Length →72
Content-Type →application/json; charset=utf-8
Date →Tue, 10 Oct 2017 13:39:03 GMT
Expires →-1
Pragma →no-cache
Server →Microsoft-IIS/8.0
X-AspNet-Version →4.0.30319
X-Powered-By →ASP.NET
X-SourceFiles →=?UTF-8?B?QzpcVmlzdWFsIFN0dWRpbyBQcm9qZWN0c1xNaWRhbWVyaWNhQVBJXE1pZGFtQVBJXHN1cHBseWl0ZW1zXDQ1NA==?=

IIS 日志中的请求:

2017-10-10 13:27:35 ::1 PUT /supplyitems/454 - 57263 - ::1 PostmanRuntime/6.3.2 - 405 0 0 0

我的路线:

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

如有任何建议,我们将不胜感激。我正在使用 IIS Express。谢谢。

我遇到那个错误的经历是:

你得到这个可能是因为你安装了一些额外的 IIS 模块: WebDAV 如果您不需要它,我会从您的 IIS 中删除它。

此模块是 IIS 角色的一部分。 要摆脱它,请转到: Windows 功能 -> 转 Windows 功能 On/Off -> Internet 信息服务 -> 万维网服务 -> 通用 HTTP 功能 -> WebDAV 发布。

如果你想保持它,我认为你需要添加 PUT/DELETE 到 ISAPI 过滤器。

关于这里的更多解释:

您可能还安装了一些额外的模块。即使您修复了这些问题,您的请求和路由也不会匹配。

您的路由配置将被忽略,因为您已经使用路由属性明确设置了路由。您应该将 DELETE 方法路由属性更新为 [Route("{id:int}")]。对于 PUT 方法,你在做什么有点不清楚,但我假设你想做这样的事情: [Route("{id:int}")] [HttpPut] public HttpResponseMessage Put([FromUrl]int id, [FromBody]SupplyItem item) { ...