不允许httpclient post-async返回方法(405)

Question

目前我在向web api发布一些数据时遇到问题。我有两个不同的项目。一个项目是运行webapi2.0的web应用程序。另一个项目是一个简单的控制台应用程序，它创建一个新的http客户端，构建一个json对象，并尝试将其发布到web api控制器。然而，在做帖子时，我一直得到405(方法不允许…)。我在互联网上搜索解决方案。我甚至在IIS Express中检查了处理程序，并将其与web.config中的处理程序进行了比较。

下面是我的web api：

[RoutePrefix("api/media")]
[Authorize]
public class MultimediaController : ApiController
{
[HttpPost, Route("test")]
public IHttpActionResult Store([FromBody] TestRequest request) {
return Ok(request);
}
...

接下来，这里是我的测试模型：

public class TestRequest {
public string testProp1 { get; set; }
public string testProp2 { get; set; }
}

然后，这里是我的控制台应用程序中的一段代码，它试图进行POST：

private const string testUrl = "/api/media/test/";
private async Task<bool> RunPostTest()
{
var httpClient = CreateHttpClient();
var content = JsonConvert.SerializeObject(new TestRequest {testProp1 = "hello", testProp2 = "world"});
var jsonContent = new StringContent(content, Encoding.UTF32, "application/json");
var response = await httpClient.PostAsync(testUrl, jsonContent);
if (response.StatusCode != System.Net.HttpStatusCode.OK)
{
Console.WriteLine($"Response code: {response.StatusCode}");
return false;
}
return true;
}

以下是我的处理程序web.config：

<system.webServer>
<validation validateIntegratedModeConfiguration="false" />
<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>

我检查了iisexpress applicationhost.config。里面有很多处理程序，但我只发布最后几个，因为它们看起来很相关。还要注意，WebDAV到处都被评论掉了。。。

...
<add name="TRACEVerbHandler" path="*" verb="TRACE" modules="ProtocolSupportModule" requireAccess="None" />
<add name="OPTIONSVerbHandler" path="*" verb="OPTIONS" modules="ProtocolSupportModule" requireAccess="None" />
<add name="ExtensionlessUrl-ISAPI-4.0_32bit" path="*." verb="GET,HEAD,POST,DEBUG" modules="IsapiModule" scriptProcessor="%windir%Microsoft.NETFrameworkv4.0.30319aspnet_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="%windir%Microsoft.NETFramework64v4.0.30319aspnet_isapi.dll" preCondition="classicMode,runtimeVersionv4.0,bitness64" responseBufferLimit="0" />
<add name="ExtensionlessUrl-Integrated-4.0" path="*." verb="GET,HEAD,POST,DEBUG" type="System.Web.Handlers.TransferRequestHandler" preCondition="integratedMode,runtimeVersionv4.0" responseBufferLimit="0" />
<add name="StaticFile" path="*" verb="*" modules="StaticFileModule,DefaultDocumentModule,DirectoryListingModule" resourceType="Either" requireAccess="Read" />
</handlers>
</system.webServer>

这不断地返回一个http 405。我在这里有其他方法来执行GET，这些方法很好地达到了终点。

同样值得注意的是，我使用了一个外部应用程序来执行帖子，比如Postman，发送正文中的原始json。终点被击中了！这似乎与iisexpress的设置有关，但我可能错了。

有人知道可能是什么情况吗？或者向我介绍一些可以揭示问题的链接？

我正在使用即时窗口调试返回的响应对象：

response
{StatusCode: 405, ReasonPhrase: 'Method Not Allowed', Version: 1.1, Content: System.Net.Http.StreamContent, Headers:
{
Pragma: no-cache
X-SourceFiles: =?UTF-8?B?QzpcVXNlcnNcZ204NDBkXERvY3VtZW50c1xQcm9qZWN0c1xWaXN1YWwgU3R1ZGlvIFByb2plY3RzXEdpdFxNb2JpbGl0eSBDT0VcU0JWVFxTQlZUXFNCVlRcYXBpXG1lZGlhXHRlc3Rc?=
Cache-Control: no-cache
Date: Mon, 16 Jan 2017 17:39:32 GMT
Server: Microsoft-IIS/10.0
X-AspNet-Version: 4.0.30319
X-Powered-By: ASP.NET
Content-Length: 1218
Allow: POST
Content-Type: text/html
Expires: -1
}}
Content: {System.Net.Http.StreamContent}
Headers: {Pragma: no-cache
X-SourceFiles: =?UTF-8?B?QzpcVXNlcnNcZ204NDBkXERvY3VtZW50c1xQcm9qZWN0c1xWaXN1YWwgU3R1ZGlvIFByb2plY3RzXEdpdFxNb2JpbGl0eSBDT0VcU0JWVFxTQlZUXFNCVlRcYXBpXG1lZGlhXHRlc3Rc?=
Cache-Control: no-cache
Date: Mon, 16 Jan 2017 17:39:32 GMT
Server: Microsoft-IIS/10.0
X-AspNet-Version: 4.0.30319
X-Powered-By: ASP.NET
}
IsSuccessStatusCode: false
ReasonPhrase: "Method Not Allowed"
RequestMessage: {Method: POST, RequestUri: 'http://localhost:45106/api/media/test/', Version: 1.1, Content: System.Net.Http.StringContent, Headers:
{
Accept: application/json
Content-Type: application/json; charset=utf-32
Content-Length: 164
}}
StatusCode: MethodNotAllowed
Version: {1.1}

Answer 1

确保API项目的Web.config文件的<system.webServer>部分中包含以下内容：

<modules runAllManagedModulesForAllRequests="true">
<remove name="WebDAVModule"/> <!-- add this -->
</modules>

此外，在处理程序部分：

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

Answer 2

请尝试以下操作：添加ExtensionlessUrlHandler*并将其添加回来。它对我有用。

<modules runAllManagedModulesForAllRequests="true">
<remove name="WebDAVModule" />
</modules>
<handlers>
<remove name="WebDAV" />
<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>