獲取Web API Z9BBF373797BF7CF7BA62C80023682E2內的絕對值URL

Question

在我的 Controller 中，出於此問題的 scope 的原因，我無法使用CreatedAtAction 。 I therefore need to do the following, however I don't know how to get the absolute URL of the Web API to correctly set the Location header?

public async Task<ActionResult<string>> PostItem(ItemPostRequest itemPostRequest)
{
    // call repository etc.

    string baseUrl= // <------- how to get this?
    Response.Headers.Add("Location", baseUrl + insertId);

    return Content(savedItem, "application/json", System.Text.Encoding.UTF8);
}

我在 .NET 5.0 上，以防萬一。

Answer 1

string baseUrl = $"{Request.Scheme}://{Request.Host.Value}/{Request.Path}";

Answer 2

Stefan，由於代表率低，我無法添加評論，因此在您尋找關於尾隨斜杠的更舒適解決方案時添加 Prasad 的答案 - 這就是我使用的：

using System;
using Microsoft.AspNetCore.Authorization;
using Microsoft.AspNetCore.Mvc;

namespace GeddesCapital.Blas.Api.Controllers
{
    public abstract class BaseControllerInheritedByAllMyControllers : ControllerBase
    {
        protected string BaseUrl => $"{Request.Scheme}://{Request.Host.Value}";

        protected string EndpointUrl => $"{BaseUrl}/{Request.Path.ToString().Trim('/')}";
    }
    
    [Route("api/v1/[controller]")]
    public class TestController : BaseControllerInheritedByAllMyControllers
    {
        [HttpPost("named-test-endpoint")]
        [AllowAnonymous]
        public ActionResult SomeTestEndpoint()
        {
            const string trailingUrl = "/api/v1/Test/named-test-endpoint";
            
            var absoluteUrl1 = $"{BaseUrl}{trailingUrl}";
            var absoluteUrl2 = $"{EndpointUrl}";

            Console.WriteLine($"The two paths match each other: {absoluteUrl1 == absoluteUrl2}");

            return Ok();
        }
    }
}