Question

我使用Web API获得了一个C＃项目。我已经为我的控制器定义了我的前缀和路由，但在尝试访问＆＃34; all＆＃34;时，我一直收到错误。路线：

{
"message": "No HTTP resource was found that matches the request URI '.../api/InventoryOnHand/all'.",
"messageDetail": "No type was found that matches the controller named 'InventoryOnHand'."
}

这是我的控制人员：

[RoutePrefix("api/inventoryonhand")]
public class InventoryOnHandController : ApiController
{
    public InventoryOnHandController(){}
    [HttpGet]
    [Route("all")]
    [CacheOutput(ClientTimeSpan = 50, MustRevalidate = true)]
    public IHttpActionResult GetAllInventoryOnHand()
    {
       // Do stuff
    }
}

我的WebApiConfig不是问题（我认为），因为我们有其他路线工作正常，无法弄清楚为什么这个人是奇怪的人。我们在WebApiConfig中的路由：

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

编辑添加WebApiConfig文件：

public static void Register(HttpConfiguration config)
    {
        // Web API configuration and services
        config.SuppressDefaultHostAuthentication();
        config.Filters.Add(new HostAuthenticationFilter(OAuthDefaults.AuthenticationType));

        // require authenticated users in all controllers/action unless decoratd with "[AllowAnonymous]"
        config.Filters.Add(new AuthorizeAttribute());

        config.IncludeErrorDetailPolicy = IncludeErrorDetailPolicy.Always;
        config.Services.Add(typeof(IExceptionLogger), new SerilogExceptionLogger());
        ConfigureJsonHandling(config.Formatters.JsonFormatter);

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

        // Web API routes
        config.MapHttpAttributeRoutes();
    }

    private static void ConfigureJsonHandling(JsonMediaTypeFormatter json)
    {
        //make our json camelCase and not include NULL or default values
        json.SerializerSettings.ContractResolver = new CamelCasePropertyNamesContractResolver();
        json.SerializerSettings.ReferenceLoopHandling = Newtonsoft.Json.ReferenceLoopHandling.Ignore;
        json.SerializerSettings.DefaultValueHandling = Newtonsoft.Json.DefaultValueHandling.Ignore;
        json.SerializerSettings.NullValueHandling = Newtonsoft.Json.NullValueHandling.Ignore;

    }

编辑添加启动文件（为简洁起见缩短）：

public void Configuration(IAppBuilder app)
    {
        LoggingConfig.ConfigureLogger();

        HttpConfiguration httpConfiguration = new HttpConfiguration();

        var container = IoC.Initialize();
        httpConfiguration.DependencyResolver = new StructureMapResolver(container);

        ConfigAuth(app);

        WebApiConfig.Register(httpConfiguration);


        GlobalConfiguration.Configure(WebApiConfig.Register);


        app.UseCors(Microsoft.Owin.Cors.CorsOptions.AllowAll);
        app.UseWebApi(httpConfiguration);

        Log.Logger.ForContext<Startup>().Information("======= Starting Owin Application ======");
    }

Answer 1

由于您使用的是属性，因此无法按惯例获取路由。在你的WebApiConfig中（你现在有了路由），你需要在config.MapHttpAttributeRoutes（）中添加一行代码：

config.MapHttpAttributeRoutes();

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

对MapHttpAttributeRoutes扩展方法的调用将获取路由/路由前缀的属性，并为您的方法创建新路由。

Answer 2

Attribute Routing in ASP.NET Web API 2

路由映射的顺序很重要。必须在基于约定的路由之前完成属性路由映射config.MapHttpAttributeRoutes()，因为当框架匹配路由表中的路由时，第一个匹配将获胜。如果路线通过约定匹配，那么它将不会到达属性路线。

public static class WebApiConfig
{
    public static void Register(HttpConfiguration config)
    {
        //..other code removed for brevity

        // Attribute routing.
        config.MapHttpAttributeRoutes();

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

ApiController

[RoutePrefix("api/inventoryonhand")]
public class InventoryOnHandController : ApiController {
    public InventoryOnHandController(){}

    //GET api/inventoryonhand
    [HttpGet]
    [Route("")]
    [CacheOutput(ClientTimeSpan = 50, MustRevalidate = true)]
    public IHttpActionResult GetAllInventoryOnHand() {
       // Do stuff
    }
}

在初创公司中尝试此操作。

public void Configuration(IAppBuilder app)
{
    LoggingConfig.ConfigureLogger();

    HttpConfiguration httpConfiguration = GlobalConfiguration.Configuration;

    GlobalConfiguration.Configure(WebApiConfig.Register);

    var container = IoC.Initialize();
    httpConfiguration.DependencyResolver = new StructureMapResolver(container);

    ConfigAuth(app);       

    app.UseCors(Microsoft.Owin.Cors.CorsOptions.AllowAll);        

    Log.Logger.ForContext<Startup>().Information("======= Starting Owin Application ======");
}

Web API控制器无法识别

2 个答案: