的Web API路由的行动

Question

的目标是让这四个端点：

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

路由条目：

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" } 
    ); 

这些都是在控制我的四个函数的定义：

[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，当我使用第一个URI发布发票时，获得识别的路线是附件路线。如何在ID变量之后拥有不同部分的端点？

Answer 1

了它！

路线：

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

功能定义：

[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。请注意，在我指定默认操作“”的路由中，因为使用通配符的webAPI路由存在缺陷。如果我没有完成默认设置，则会引发空引用异常。有关该缺陷的更多信息可以在这里找到：http://aspnetwebstack.codeplex.com/workitem/718 - 预定在ASP.NET v5中修复。

感谢您的帮助！

Answer 2

我认为你必须定义另一条路线，因为第一个URI不应当匹配InvoiceAttachments路线，因为它没有对最终“/附件”

Answer 3

尝试具有单一路线

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

然后装饰功能您是否尝试过使用约束，而不是默认？

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：

你也许有点通过使动作的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()