Web Api - Catch 405方法不允许

Question

截至目前，Web api应用程序返回以下响应正文405 - Method Not Allowed错误。我试图更改响应体，但我不知道如何使用委托处理程序，ApiControllerActionSelector或过滤器。任何人都可以帮我解决服务器端的405错误吗？

{ message: "The requested resource does not support http method 'GET'." }

注意：我的api控制器有[RoutePrefix]值。

Answer 1

您可以使用DelegatingHandler来捕获传出响应并覆盖其行为。

public class MethodNotAllowedDelegatingHandler : DelegatingHandler
{
    async protected override Task<HttpResponseMessage> SendAsync(
            HttpRequestMessage request, CancellationToken cancellationToken)
    {
        HttpResponseMessage response = await base.SendAsync(request, cancellationToken);
        if (response.StatusCode == HttpStatusCode.MethodNotAllowed)
        {
            // adjust your response here as needed...
        }
        return response;
    }
}

在Global.asax中......

config.MessageHandlers.Add(new MethodNotAllowedDelegatingHandler());