Question

我的开发箱上有一个WebAPI服务，我试图从一个ASP.NET网站上调用，该网站也在我的开发箱上托管。 GET请求工作正常。但是，POST请求返回405.

我在这里提到的两个最常见的原因是IIS处理程序在WebAPI获取之前捕获请求，或者您没有为JavaScript正确安装Cors。这似乎都不适用于此，因为我已经检查了我的处理程序配置，而且我没有通过JavaScript进行服务调用。

从ASP.NET应用程序发出请求的代码是：

using (HttpClient client = new HttpClient())
{
    Uri destination = new Uri("http://PromotionCodeProviderService/api/PromotionCode/");
    client.DefaultRequestHeaders.Accept.Clear();
    client.DefaultRequestHeaders.Accept.Add(new MediaTypeWithQualityHeaderValue("application/json"));
    string newCodeJson = JsonConvert.SerializeObject(newCode);
    HttpContent postContent = new ByteArrayContent(newCodeJson.ToRawByteArray());

    HttpResponseMessage response = client.PostAsync(destination, postContent).Result;

    if (response.IsSuccessStatusCode)
    {
        return true; 
    }
    else
    {
        return false; 
    }
}

在服务方面，路由是：

public static void RegisterRoutes(RouteCollection routes)
{
    routes.IgnoreRoute("{resource}.axd/{*pathInfo}");
    routes.MapRoute(
        name: "Default",
        url: "api/{controller}/{id}",
        defaults: new { controller = "Home", id = UrlParameter.Optional }
    );
}

控制器代码是：

public class PromotionCodeController : ApiController
{
    private readonly PromotionCodeService _promotionCodeService; 

    public PromotionCodeController()
    {
        _promotionCodeService = new PromotionCodeService();            
    }

    // GET api/values
    public List<PromotionCode> Get()
    {
        return _promotionCodeService.GetPromotionCodes();
    }

    // POST api/values
    public void Post([FromBody]string value)
    {
        PromotionCode newCode = Json.Decode<PromotionCode>(value); 
        _promotionCodeService.AddPromotionCode(newCode);
    }
...

如果我使用GET方法调用服务，我会进入上面的Get（）方法，并且它会愉快地返回值。如果我使用POST方法调用服务，我会得到以下响应：

{StatusCode: 405, ReasonPhrase: 'Method Not Allowed', Version: 1.1, Content: System.Net.Http.StreamContent, Headers:
{
  Pragma: no-cache
  Access-Control-Allow-Origin: *
  Access-Control-Allow-Methods: GET,PUT,POST,DELETE
  Access-Control-Allow-Headers: Content-Type
  Cache-Control: no-cache
  Date: Fri, 05 Aug 2016 19:09:10 GMT
  Server: Microsoft-IIS/7.5
  X-AspNet-Version: 4.0.30319
  X-Powered-By: ASP.NET
  Content-Length: 73
  Content-Type: application/json; charset=utf-8
  Expires: -1
}}

我的applicationHost.config中唯一不受特定文件路径限制的处理程序是：

<add name="TRACEVerbHandler" path="*" verb="TRACE" modules="ProtocolSupportModule" requireAccess="None" />
<add name="OPTIONSVerbHandler" path="*" verb="OPTIONS" modules="ProtocolSupportModule" requireAccess="None" />
<add name="ExtensionlessUrlHandler-ISAPI-4.0_32bit" path="*." verb="GET,HEAD,POST,DEBUG" modules="IsapiModule" scriptProcessor="C:\Windows\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" modules="IsapiModule" scriptProcessor="C:\Windows\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" type="System.Web.Handlers.TransferRequestHandler" preCondition="integratedMode,runtimeVersionv4.0" />
<add name="StaticFile" path="*" verb="*" modules="StaticFileModule,DefaultDocumentModule,DirectoryListingModule" resourceType="Either" requireAccess="Read" />

我服务的web.config处理程序是：

<handlers>
  <remove name="WebDAV" />
  <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>

如果我在我的服务的web.config中注释掉ExtensionlessUrlHandler-Integrated-4.0处理程序，则错误从405变为404，所以我很确定POST请求被路由到正确的处理程序 - 之后似乎事情变得糟糕了。

非常感谢任何可以提供帮助的人。

从ASP.NET获取对WebAPI服务的POST请求405 - 右侧处理程序似乎被称为

0 个答案: