405 WebAPI2上不允许的方法(OWIN)

Question

我正在为我的API设置一个WebAPI端点,但是我无法使用我的PostRegister方法调用AngularJS.

webAPI和Angular位于不同的站点上.

在Startup.cs我有:

    public void Configuration(IAppBuilder app)
    {
        ConfigureOAuth(app);

        var config = new HttpConfiguration();

        WebApiConfig.Register(config);
        app.UseCors(Microsoft.Owin.Cors.CorsOptions.AllowAll);
        app.UseWebApi(config);

    }

    private void ConfigureOAuth(IAppBuilder app)
    {
        var oAuthServerOptions = new OAuthAuthorizationServerOptions
        {
            AllowInsecureHttp = true,
            TokenEndpointPath = new PathString(Paths.TokenPath),
            AccessTokenExpireTimeSpan = TimeSpan.FromMinutes(30),
            Provider = Kernel.Get<IOAuthAuthorizationServerProvider>()
        };
        app.UseOAuthAuthorizationServer(oAuthServerOptions); 

        OAuthBearerOptions = new OAuthBearerAuthenticationOptions();
        app.UseOAuthBearerAuthentication(OAuthBearerOptions);
    }

然后在控制器上,我的方法被设置为允许匿名:

    [AllowAnonymous]
    public bool PostRegister(UserSignupForm form)
    {
        ...
    }

我还更新了web.config:

 <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>

在Angular方面,我做了一个简单的$ http.post调用:

    saveRegistration: function (registration) {
        return $http.post(baseUrl + '/api/signup/register', registration).then(function (response) {
            return response;
        });
    }

当使用Postman进行调用时,我得到了一个成功的响应,但是当从Angular执行相同的调用时,我得到405错误.

BitOfTech示例站点正在发送相同的请求标头,但能够获取Access-Control-Allow-XXX标头

我已经使用ASP.NET Web API 2,Owin和Identity更新了我的代码以遵循基于令牌的身份验证

Answer 1

I had similar issue recently. I added controller handler for the pre-flight OPTIONS request and it solved the problem.

[AllowAnonymous]
[Route("Register")]
[AcceptVerbs("OPTIONS")]
public async Task<IHttpActionResult> Register()
{
    return Ok();
}