Question

我有一个 .NET Core Web Api ，当我使用IIS Express启动项目时，我得到了404，当我使用邮递员并呼叫Web Api本地主机（无路由）时，得到500。但就我而言，无论有没有路线，我都会得到404。在launch.settings中，我得到了：

  "iisSettings": {
    "windowsAuthentication": false,
    "anonymousAuthentication": true,
    "iisExpress": {
      "applicationUrl": "http://localhost:63793",
      "sslPort": 0
    }

为什么我打“ http://localhost:63793”时得到404？

Answer 1

现在您已经提供了控制器，我相信您只是在访问错误的URL。

[Route("graph/[controller]")]
public class GraphController : ControllerBase

这意味着您可能应该访问graph/graph/users

此处["graph/[controller"]的控制器部分将获得与您的控制器名称相同的名称，例如 Graph Controller。一个简单而优雅的解决方案是将第一部分重命名为api/[controller]->则URL将为baseurl:port/api/graph/route或您的情况：localhost:63793/api/graph/users

尝试一下。

Answer 2

    [Route("graph/[controller]")]
    public class GraphController : ControllerBase
    {
        /// <summary>
        /// Retrieve configured AAD Users
        /// </summary>
        /// <returns>An awaitable <seealso cref="Task{ICollection{AADUser}}>}"/>that contains a mapping of Ids of Users and their mapped Groups</returns>
        [Route("Users")]
        [HttpGet]
        public async Task<IActionResult> GetUsersAsync()
        {
            ICollection<AADUser> response;

            try
            {
                response = await graphBC.GetUsersAsync().ConfigureAwait(false);

                if (response == null || response.Count < 1)
                {
                    return NotFound();
                }
            }
            catch (Exception ex)
            {
                throw ex;
            }

            return Ok(response);
        }

当我在shell上调用它时，会得到返回：

curl -v http://localhost:63793/graph/Users
*   Trying ::1...
* TCP_NODELAY set
* Connected to localhost (::1) port 63793 (#0)
> GET /graph/Users HTTP/1.1
> Host: localhost:63793
> User-Agent: curl/7.55.1
> Accept: */*
>
< HTTP/1.1 404 Not Found
< Server: Kestrel
< X-SourceFiles: =?UTF-8?B?Qzpcd29ya3NwYWNlXEJFLWFhZC1uZXRjb3JlXExFT05JU21hcnRDYWJsZS5BQURcTEVPTklTbWFydENhYmxlLkFBRC5Db3JlXGdyYXBoXFVzZXJz?=
< X-Powered-By: ASP.NET
< Date: Tue, 05 Feb 2019 09:24:35 GMT
< Content-Length: 0
<
* Connection #0 to host localhost left intact

Answer 3

为什么我打“ http://localhost:63793”时得到404？

似乎是因为您在此地址上没有资源。

localhost：63793 / graph / Users

根据路由属性[Route("graph/[controller]")]和[Route("Users")]，您的资源位于localhost:63793/graph/graph/users上，因为您有前缀graph/，并且控制器名为GraphController。通常api网址的前缀为api/。

.NET Core Web Api：调用localhost返回404

3 个答案: