的Web API路由的行動

Question

的目標是讓這四個端點：

POST v1/invoices<br/> 
POST v1/invoices/12345<br/> 
POST v1/invoices/12345/attachment<br/> 
POST v1/invoices/12345/image 

路由條目：

routes.MapHttpRoute(
     name: "InvoiceAttachments", 
     routeTemplate: "v1/invoices/{id}/attachments", 
     defaults: new { controller = "invoices", action = "PostAttachment" } 
    ); 

routes.MapHttpRoute(
     name: "InvoiceImages", 
     routeTemplate: "v1/invoices/{id}/images", 
     defaults: new { controller = "invoices", action = "PostImage" } 
    ); 

這些都是在控制我的四個函數的定義：

[HttpPost] 
[ActionName("PostAttachment")] 
public HttpResponseMessage PostAttachment(int id) 

[HttpPost] 
[ActionName("PostImage")] 
public HttpResponseMessage PostImage(int id) 

[HttpPost] 
public HttpResponseMessage Post(int id)  

[HttpPost] 
public HttpResponseMessage Post() 

然而，當我使用第一個URI發佈發票時，獲得識別的路線是附件路線。如何在ID變量之後擁有不同部分的端點？

Answer 1

了它！

路線：

routes.MapHttpRoute(
     name: "InvoiceStuff", 
     routeTemplate: "v1/invoices/{id}/{*action}", 
     defaults: new { controller = "invoices", action = "" } 
    ); 

功能定義：

[HttpPost] 
[ActionName("Attachments")] 
public HttpResponseMessage Attachments([FromUri]int id) 

[HttpPost] 
[ActionName("Images")] 
public HttpResponseMessage Images([FromUri]int id) 

[HttpPost] 
public HttpResponseMessage Post() 

[HttpPost] 
[ActionName("")] 
public HttpResponseMessage Post([FromUri]int id) 

完美的作品。請注意，在我指定默認操作「」的路由中，因爲使用通配符的webAPI路由存在缺陷。如果我沒有完成默認設置，則會引發空引用異常。有關該缺陷的更多信息可以在這裏找到：http://aspnetwebstack.codeplex.com/workitem/718 - 預定在ASP.NET v5中修復。

感謝您的幫助！

Answer 2

我認爲你必須定義另一條路線，因爲第一個URI不應當匹配InvoiceAttachments路線，因爲它沒有對最終「/附件」

Answer 3

嘗試具有單一路線

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

像

[HttpPost] 
[ActionName("DefaultAction")] 
public HttpResponseMessage Post() 


[HttpPost] 
public HttpResponseMessage PostImage(int id) 

Answer 4

然後裝飾功能您是否嘗試過使用約束，而不是默認？

routes.MapHttpRoute(
     name: "InvoiceAttachments", 
     routeTemplate: "v1/invoices/{id}/attachments", 
     defaults: new { controller = "invoices" }, 
     constraints: new { action = "PostAttachment" } 
    ); 

routes.MapHttpRoute(
     name: "InvoiceImages", 
     routeTemplate: "v1/invoices/{id}/images", 
     defaults: new { controller = "invoices" }, 
     constraints: new { action = "PostImage" } 
    ); 

routes.MapHttpRoute(
     name: "Default", 
     routeTemplate: "v1/invoices/{id}", 
     defaults: new { controller = "invoices" } 
    ); 

UPDATE：

routes.MapHttpRoute(
     name: "InvoiceAttachments", 
     routeTemplate: "v1/invoices/{id}/{action}", 
     defaults: new { controller = "invoices" }, 
     constraints: new {action = "attachments|images"} 
    ); 

routes.MapHttpRoute(
      name: "default", 
      routeTemplate: "v1/invoices/{id}", 
      defaults: new { controller = "invoices", id = RouteParameter.Optional }, 
      constraints: new {action = "attachments|images"} 
     ); 

和控制方法：

你也許有點通過使動作的URL部分本事

[HttpPost] 
[ActionName("attachments")] 
public HttpResponseMessage PostAttachment(int id) 

[HttpPost] 
[ActionName("images")] 
public HttpResponseMessage PostImage(int id) 

public HttpResponseMessage Post(int id) 

public HttpResponseMessage Post()