ASP.Net WebAPI 路由配置

Question

我定义了以下路由：

GlobalConfiguration.Configuration.Routes.Add(
    "iOS Service",
    new HttpRoute("ios/{controller}/{action}/{id}", new HttpRouteValueDictionary { { "id", RouteParameter.Optional } })
);

GlobalConfiguration.Configuration.Routes.MapHttpRoute(
    name: "iOS Service Documents",
    routeTemplate: "ios/getfulldocumentstructure",
    defaults: new { controller = "Documents", action = "GetFullDocumentStructure" }
);

GlobalConfiguration.Configuration.Routes.MapHttpRoute(
    name: "iOS Service AppInfo",
    routeTemplate: "ios/appinfo",
    defaults: new { controller = "AppInfo", action = "GetAppInfo" }
);

GlobalConfiguration.Configuration.Routes.MapHttpRoute(
    name: "iOS Service Html",
    routeTemplate: "ios/html/{language}/{contentId}",
    defaults: new { controller = "Html", action = "GetHtml", language = RouteParameter.Optional, contentId = RouteParameter.Optional }
);

使用以下控制器：

public class HtmlController : ApiController
{
    [HttpGet]
    public string GetHtml(long language, long contentId)
    {

        return "Hello";
    }
}

如果我使用 http://localhost/ios/html?languageId=1033&contentId=12345 访问服务，则会触发 GetHtml 操作。

如果我使用 http://localhost/ios/html/1033/12345 访问服务，我会收到一个错误，指出在控制器中找不到匹配的操作。

我做错了什么？

Answer 1

如果您的参数是可选的，那么可以试试这个：

public class HtmlController : ApiController
{
    [HttpGet]
    public string GetHtml(long? languageId, long? contentId)
    {

        return "Hello";
    }
}

Answer 2

将 catch all 路由移到最后解决了这个问题。调用打错了控制器：

GlobalConfiguration.Configuration.Routes.MapHttpRoute(
    name: "iOS Service Documents",
    routeTemplate: "ios/getfulldocumentstructure",
    defaults: new { controller = "Documents", action = "GetFullDocumentStructure" }
);

GlobalConfiguration.Configuration.Routes.MapHttpRoute(
    name: "iOS Service AppInfo",
    routeTemplate: "ios/appinfo",
    defaults: new { controller = "AppInfo", action = "GetAppInfo" }
);

GlobalConfiguration.Configuration.Routes.MapHttpRoute(
    name: "iOS Service Html",
    routeTemplate: "ios/html/{language}/{contentId}",
    defaults: new { controller = "Html", action = "GetHtml", language = RouteParameter.Optional, contentId = RouteParameter.Optional }
);

GlobalConfiguration.Configuration.Routes.Add(
    "iOS Service",
    new HttpRoute("ios/{controller}/{action}/{id}", new HttpRouteValueDictionary { { "id", RouteParameter.Optional } })
);