.Net Web API 不匹配路由

Question

我无法理解 Web API 2 如何处理路由。

我创建了一个 PostsController，它在标准操作 GET、POST 等方面运行良好
我尝试添加一个自定义路由，它是一个名为 Save() 的 PUT 操作，它采用模型作为参数。
我在自定义路由前面加了[HttpPut]和[Route("save")]。我还修改了 WebAPIConfig.cs 来处理模式 api/{controller}/{id}/{action}
但是，如果我在 Postman 中转到 http://localhost:58385/api/posts/2/save（使用 PUT），我会收到一条类似于 No action was found on the controller 'Posts' that matches the name 'save' 的错误消息。本质上是一个美化的 404.
如果我将路线更改为 [Route("{id}/save")]，结果错误仍然存在。

我做错了什么？

WebAPIConfig.cs

config.Routes.MapHttpRoute(
     name: "DefaultApi",
     routeTemplate: "api/{controller}/{id}/{action}",
     defaults: new { id = RouteParameter.Optional, action = RouteParameter.Optional, }
            );

PostController.cs

// GET: api/Posts
public IHttpActionResult Get()
{
    PostsStore store = new PostsStore();
    var AsyncResult = store.GetPosts();
    return Ok(AsyncResult);
}

// GET: api/Posts/5
public IHttpActionResult Get(string slug)
{
    PostsStore store = new PostsStore();
    var AsyncResult = store.GetBySlug(slug);
    return Ok(AsyncResult);
}

// POST: api/Posts
public IHttpActionResult Post(Post post)
{
    PostsStore store = new PostsStore();
    ResponseResult AsyncResult = store.Create(post);
    return Ok(AsyncResult);
}

    // PUT: api/Posts/5 DELETED to make sure I wasn't hitting some sort of precedent issue.
    //public IHttpActionResult Put(Post post)
   // {

       //     return Ok();
    //}

[HttpPut]
[Route("save")]
public IHttpActionResult Save(Post post)
{
    PostsStore store = new PostsStore();
    ResponseResult AsyncResponse = store.Save(post);
    return Ok(AsyncResponse); 
}

Answer 1

如果使用 [Route] 属性，那么这是属性路由，与您配置的基于约定的路由相对。您还需要启用属性路由。

//WebAPIConfig.cs

// enable attribute routing
config.MapHttpAttributeRoutes();

//...add other convention-based routes

而且路由模板也必须正确设置。

//PostController.cs

[HttpPut]
[Route("api/posts/{id}/save")] // Matches PUT api/posts/2/save
public IHttpActionResult Save(int id, [FromBody]Post post) {
    PostsStore store = new PostsStore();
    ResponseResult AsyncResponse = store.Save(post);
    return Ok(AsyncResponse);    
}

引用Attribute Routing in ASP.NET Web API 2

.Net Web API 不匹配路由

.Net Web API Doesn't Match Route

c#

asp.net-web-api

asp.net-web-api-routing