Web API Lowercase Route - asp.net

Hy there,
I need to enforce Lowercase routes in my Web API project.
If it was an MVC project i would use something like
routes.LowercaseUrls = true;
But in Web API that property does not exists.
I tried the LowercaseRoutesMVC4 NuGet extension but my routes needs to have a custom handler so that extension does not help me.
What can I do?

This looks like it does what you need
public class RouteConfig
{
public static void RegisterRoutes(RouteCollection routes)
{
routes.MapHttpRoute(
name: "DefaultApi",
routeTemplate: "api/{controller}/{id}",
defaults: new { id = RouteParameter.Optional },
constraints: new { url = new LowercaseRouteConstraint() }
);
}
}
public class LowercaseRouteConstraint : IRouteConstraint
{
public bool Match(HttpContextBase httpContext, Route route, string parameterName, RouteValueDictionary values, RouteDirection routeDirection)
{
var path = httpContext.Request.Url.AbsolutePath;
return path.Equals(path.ToLowerInvariant(), StringComparison.InvariantCulture);
}
}
I found this at https://gist.github.com/benfoster/3274578#file-gistfile1-cs-L4

I have json config like
public class JsonConfig
{
public static void Initiliaze(HttpConfiguration config, bool isCamelCase)
{
var json = config.Formatters.JsonFormatter;
json.SerializerSettings.PreserveReferencesHandling = PreserveReferencesHandling.None;
json.SerializerSettings.ReferenceLoopHandling = ReferenceLoopHandling.Ignore;
json.SerializerSettings.Formatting = Formatting.None;
if (isCamelCase)
json.SerializerSettings.ContractResolver = new CamelCasePropertyNamesContractResolver();
config.Formatters.Remove(config.Formatters.XmlFormatter);
}
}
You can call this method in WebApiConfig.cs like
JsonConfig.Initiliaze(config, true);

Related

Cannot set a custom contract resolver in web api configuration

How can I set a custom contract resolver in web api configuration? My code is relatively new and has no custom contract resolver till now.
I have added no other customization besides routing.
I tried in three different ways and none worked:
public static void Register(HttpConfiguration config)
{
// Web API routes
config.MapHttpAttributeRoutes();
config.Routes.MapHttpRoute(
name: "DefaultApi",
routeTemplate: "api/{controller}/{action}/{id}",
defaults: new { id = RouteParameter.Optional }
);
//attempt 1
config.Formatters.JsonFormatter.SerializerSettings.ContractResolver = new CustomContractResolver();
//attempt 2
GlobalConfiguration.Configuration.Formatters.JsonFormatter.SerializerSettings.ContractResolver = new CustomContractResolver();
//attempt 3
JsonConvert.DefaultSettings = () => new JsonSerializerSettings
{
ContractResolver = new CustomContractResolver()
};
}
The custom contract resolver code, breakpoint never reaches here when I'm debugging:
public class CustomContractResolver : CamelCasePropertyNamesContractResolver
{
protected override string ResolvePropertyName(string propertyName)
{
var regex = new Regex(#"([_])(\w)");
if (regex.IsMatch(propertyName))
{
var result = regex.Replace(propertyName.ToLower(), (match) => { return match.Groups[2].Value.ToUpper(); });
return result;
}
else
return base.ResolvePropertyName(propertyName);
}
}
Is there something that is missing?
Edit 1:
I'm using ASP.NET WebApi 5.2.1 AND MVC 5.2.7, JSON.NET (Newtonsoft.Json) v13.0.1 (and already tried the old v12)
My Global Asax is very simple as well:
public class MvcApplication : System.Web.HttpApplication
{
protected void Application_Start()
{
AreaRegistration.RegisterAllAreas();
GlobalConfiguration.Configure(WebApiConfig.Register); //<- web api configuration
FilterConfig.RegisterGlobalFilters(GlobalFilters.Filters);
RouteConfig.RegisterRoutes(RouteTable.Routes); //<- mvc configuration
BundleConfig.RegisterBundles(BundleTable.Bundles);
}
}
The MVC RouteConfig class:
public class RouteConfig
{
public static void RegisterRoutes(RouteCollection routes)
{
routes.IgnoreRoute("{resource}.axd/{*pathInfo}");
routes.IgnoreRoute("{resource}.ashx/{*pathInfo}");
routes.MapRoute(
name: "Default",
url: "{controller}/{action}/{id}",
defaults: new { controller = "Home", action = "Index", id = UrlParameter.Optional }
);
}
}
Edit 2
Here is some test web api controllers:
using System.Web.Http;
namespace Kronos.Web.Geolocalizacao.Controllers.Api
{
public class TestController : ApiController
{
[HttpGet]
public TestModel Obtain()
{
return new TestModel { CODE_IDENTIFICATION = 1, DEFAULT_DESCRIPTION = "TEST DAT THING" };
}
}
public class TestModel
{
public decimal CODE_IDENTIFICATION { get; set; }
public string DEFAULT_DESCRIPTION { get; set; }
}
}
Used the Tabbed Postman chrome addon to test
Postman tests
Your problem has nothing to do with how you are registering your global settings -- setting config.Formatters.JsonFormatter.SerializerSettings.ContractResolver is correct as per this question. Your problem is that Json.NET does not call ResolvePropertyName() when the contract resolver also has a NamingStrategy -- and your base class CamelCasePropertyNamesContractResolver does indeed have a naming strategy.
This can be verified by checking the current Json.NET reference source for DefaultContractResolver.SetPropertySettingsFromAttributes():
if (namingStrategy != null)
{
property.PropertyName = namingStrategy.GetPropertyName(mappedName, hasSpecifiedName);
}
else
{
property.PropertyName = ResolvePropertyName(mappedName);
}
Broken demo fiddle #1 here.
If I simply modify your CustomContractResolver to inherit from DefaultContractResolver (which has a null NamingStrategy by default), then it works:
public class CustomContractResolver : DefaultContractResolver
{
readonly NamingStrategy baseNamingStrategy = new CamelCaseNamingStrategy();
protected override string ResolvePropertyName(string propertyName)
{
var regex = new Regex(#"([_])(\w)");
if (regex.IsMatch(propertyName))
{
var result = regex.Replace(propertyName.ToLower(), (match) => { return match.Groups[2].Value.ToUpper(); });
return result;
}
else
return baseNamingStrategy.GetPropertyName(propertyName, false);
}
}
Fixed demo fiddle #2 here.
However, a cleaner solution would be to replace your custom contract resolver with a custom naming strategy:
public class CustomNamingStrategy : CamelCaseNamingStrategy
{
public CustomNamingStrategy() : base() { }
public CustomNamingStrategy(bool processDictionaryKeys, bool overrideSpecifiedNames) : base(processDictionaryKeys, overrideSpecifiedNames) { }
public CustomNamingStrategy(bool processDictionaryKeys, bool overrideSpecifiedNames, bool processExtensionDataNames) : base(processDictionaryKeys, overrideSpecifiedNames, processExtensionDataNames) { }
readonly Regex regex = new Regex(#"([_])(\w)");
protected override string ResolvePropertyName(string name)
{
if (regex.IsMatch(name))
{
var result = regex.Replace(name.ToLower(), (match) => { return match.Groups[2].Value.ToUpper(); });
return result;
}
return base.ResolvePropertyName(name);
}
}
And then configure it in settings like so:
settings.ContractResolver = new DefaultContractResolver
{
// Set the constructor parameters as per your preference. These values are consistent with CamelCasePropertyNamesContractResolver
NamingStrategy = new CustomNamingStrategy(processDictionaryKeys: true, overrideSpecifiedNames: true),
};
Demo fiddle #3 here.

Cannot make Owin Authentication Challenge with ApiController

I cannot get the HttpContext.Current.GetOwinContext().Authentication.Challenge to work extending a ApiController it just doesnt do anything, not even an error. I just get the output ":("
What am i doing wrong can this even be achieved? this is a Web API and the Controller RegisterRoutes is causing problems with my custom routes
It works fine when I extend Controller
public class AccountController : Controller
{
public void SignIn()
{
// Send an OpenID Connect sign-in request.
if (!Request.IsAuthenticated)
{
HttpContext.GetOwinContext().Authentication.Challenge(new AuthenticationProperties { RedirectUri = "/" }, OpenIdConnectAuthenticationDefaults.AuthenticationType);
}
}
}
It does not work when i extend ApiController
[RoutePrefix("api/auth")]
public class AuthController : ApiController
{
[HttpGet, Route("signin")]
public IHttpActionResult SignIn()
{
if (User == null || User.Identity.IsAuthenticated == false)
{
HttpContext.Current.GetOwinContext().Authentication
.Challenge(new AuthenticationProperties() {RedirectUri = "/"}, OpenIdConnectAuthenticationDefaults.AuthenticationType);
return Ok(":(");
}
return Ok(":)");
}
}
This wont allow my ApiController routing to work
public static void RegisterRoutes(RouteCollection routes)
{
routes.IgnoreRoute("{resource}.axd/{*pathInfo}");
routes.MapRoute(
name: "Default",
url: "{controller}/{action}/{id}",
defaults: new {controller = "Home", action = "Index", id = UrlParameter.Optional}
);
}

404 not found after webapi project install of asp.net identity

I added asp.net identity to my existing web project. now my controllers cannot be accessed. If I launch the local brower I am able to login in successfully. But when I go to one of the old controllers like
namespace PortwatchServiceV003.Controllers
{
[Authorize]
public class ValuesController : ApiController
{
// GET api/values
public IEnumerable<string> Get()
{
return new string[] { "value1", "value2" };
}
// GET api/values/5
public string Get(int id)
{
return "value";
}
// POST api/values
public void Post([FromBody]string value)
{
}
// PUT api/values/5
public void Put(int id, [FromBody]string value)
{
}
// DELETE api/values/5
public void Delete(int id)
{
}
}
}
it get error 404 not found.
Do the urls get somehow changed?
webapiconfig below...
public static class WebApiConfig
{
public static void Register(HttpConfiguration config)
{
config.Services.Add(typeof(IExceptionLogger), new App_Start.AiExceptionLogger());
//config.EnableCors();
//var cors = new EnableCorsAttribute("http://localhost:57007", "*", "*");
//config.EnableCors(cors);
// Web API configuration and services
// Configure Web API to use only bearer token authentication.
config.SuppressDefaultHostAuthentication();
config.Filters.Add(new HostAuthenticationFilter(OAuthDefaults.AuthenticationType));
//use https ONLY
//config.Filters.Add(new UseSSLAttribute());
// Web API routes
config.MapHttpAttributeRoutes();
config.Routes.MapHttpRoute(
name: "DefaultApi",
routeTemplate: "api/{controller}/{id}",
defaults: new { id = RouteParameter.Optional }
);
var json = config.Formatters.JsonFormatter;
json.SerializerSettings.PreserveReferencesHandling = Newtonsoft.Json.PreserveReferencesHandling.Objects;
config.Formatters.Remove(config.Formatters.XmlFormatter);
config.Formatters.JsonFormatter.SerializerSettings.Formatting = Newtonsoft.Json.Formatting.Indented;
config.Formatters.JsonFormatter.SerializerSettings.ContractResolver = new CamelCasePropertyNamesContractResolver();
}
}

Language-specific Default URL using MVC's Attribute Routing and RouteLocalization.mvc

I would like to be able to create a succinct language-specific default URL for my website so that when someone browses to:
somesite.com
They get redirected to a language-culture page such as:
somesite.com/en-US/
somesite.com/sp-MX/
somesite.com/fr-FR/
Specifically, I do not want /Home/Index appended to the URLs:
somesite.com/en-US/Home/Index
somesite.com/sp-MX/Home/Index
somesite.com/fr-FR/Home/Index
I am committed to making this site using RouteLocalization.mvc
Dresel/RouteLocalization
Translating Your ASP.NET MVC Routes
And I would like to use MVC Attribute Routing to the extent feasible.
I am having trouble figuring out how to cause the Start() method redirect to a language-culture specific URL without the addition of something like "index".
Samples of what I have attempted follow:
using RouteLocalization.Mvc;
using RouteLocalization.Mvc.Extensions;
using RouteLocalization.Mvc.Setup;
public class RouteConfig
{
public static void RegisterRoutes(RouteCollection routes)
{
routes.Clear();
routes.IgnoreRoute("{resource}.axd/{*pathInfo}");
routes.MapMvcAttributeRoutes(Localization.LocalizationDirectRouteProvider);
const string en = "en-us";
ISet<string> acceptedCultures = new HashSet<string>() { en, "de", "fr", "es", "it" };
routes.Localization(configuration =>
{
configuration.DefaultCulture = en;
configuration.AcceptedCultures = acceptedCultures;
configuration.AttributeRouteProcessing = AttributeRouteProcessing.AddAsNeutralAndDefaultCultureRoute;
configuration.AddCultureAsRoutePrefix = true;
configuration.AddTranslationToSimiliarUrls = true;
}).TranslateInitialAttributeRoutes().Translate(localization =>
{
localization.AddRoutesTranslation();
});
CultureSensitiveHttpModule.GetCultureFromHttpContextDelegate = Localization.DetectCultureFromBrowserUserLanguages(acceptedCultures, en);
var defaultCulture = System.Threading.Thread.CurrentThread.CurrentUICulture.Name;
routes.MapRoute(
name: "DefaultLocalized",
url: "{culture}/{controller}/{action}/{id}",
constraints: new { culture = #"(\w{2})|(\w{2}-\w{2})" },
defaults: new { culture = defaultCulture, controller = "Home", action = "Index", id = UrlParameter.Optional }
);
routes.MapRoute(
name: "Default",
url: "{controller}/{action}/{id}",
defaults: new { controller = "Home", action = "Index", id = UrlParameter.Optional }
);
}
}
And my home controller:
public class HomeController : Controller
{
[HttpGet]
[Route]
public RedirectToRouteResult Start()
{
return RedirectToAction("Home", new { culture = Thread.CurrentThread.CurrentCulture.Name });
}
[Route("Index", Name = "Home.Index")]
public ActionResult Index()
{
return View();
}
public ActionResult Contact()
{
return View();
}
public ActionResult About()
{
return View();
}
}
My Global.asax file:
public class MvcApplication : System.Web.HttpApplication
{
protected void Application_Start()
{
FilterConfig.RegisterGlobalFilters(GlobalFilters.Filters);
RouteConfig.RegisterRoutes(RouteTable.Routes);
AreaRegistration.RegisterAllAreas();
}
}
Redirecting is a separate concern than routing. Since your goal of redirecting any URL to its localized counterpart is a cross-cutting concern your best bet is to make a global filter.
public class RedirectToUserLanguageFilter : IActionFilter
{
private readonly string defaultCulture;
private readonly IEnumerable<string> supportedCultures;
public RedirectToUserLanguageFilter(string defaultCulture, IEnumerable<string> supportedCultures)
{
if (string.IsNullOrEmpty(defaultCulture))
throw new ArgumentNullException("defaultCulture");
if (supportedCultures == null || !supportedCultures.Any())
throw new ArgumentNullException("supportedCultures");
this.defaultCulture = defaultCulture;
this.supportedCultures = supportedCultures;
}
public void OnActionExecuting(ActionExecutingContext filterContext)
{
var routeValues = filterContext.RequestContext.RouteData.Values;
// If there is no value for culture, redirect
if (routeValues != null && !routeValues.ContainsKey("culture"))
{
string culture = this.defaultCulture;
var userLanguages = filterContext.HttpContext.Request.UserLanguages;
if (userLanguages.Length > 0)
{
foreach (string language in userLanguages.SelectMany(x => x.Split(';')))
{
// Check whether language is supported before setting it.
if (supportedCultures.Contains(language))
{
culture = language;
break;
}
}
}
// Add the culture to the route values
routeValues.Add("culture", culture);
filterContext.Result = new RedirectToRouteResult(routeValues);
}
}
public void OnActionExecuted(ActionExecutedContext filterContext)
{
// Do nothing
}
}
Usage
public class FilterConfig
{
public static void RegisterGlobalFilters(GlobalFilterCollection filters)
{
filters.Add(new RedirectToUserLanguageFilter("en", new string[] { "en", "de", "fr", "es", "it" }));
filters.Add(new HandleErrorAttribute());
}
}
Note also that your routing is misconfigured. The route setup is run one time per application startup, so setting the default culture to that of the current thread is meaningless. In fact, you should not be setting a default culture at all for your culture route because you want it to miss so your Default route will execute if there is no culture set.
routes.MapRoute(
name: "DefaultLocalized",
url: "{culture}/{controller}/{action}/{id}",
constraints: new { culture = #"(\w{2})|(\w{2}-\w{2})" },
defaults: new { controller = "Home", action = "Index", id = UrlParameter.Optional }
);
routes.MapRoute(
name: "Default",
url: "{controller}/{action}/{id}",
defaults: new { controller = "Home", action = "Index", id = UrlParameter.Optional }
);

Unable to reach ASP.NET MVC Web Api endpoint

I am working on an ASP.NET MVC app. I am trying to create a basic API. I created my first Web API controller by right-clicking on Controllers, Add -> Controller... then choosing "Web API 2 Controller - Empty". In the controller code, I have the following:
namespace MyProject.Controllers
{
public class MyApiController : ApiController
{
public IHttpActionResult Get()
{
var results = new[]
{
new { ResultId = 1, ResultName = "Bill" },
new { ResultId = 2, ResultName = "Ted" }
};
return Ok(results);
}
}
}
When I run the app, I enter http://localhost:61549/api/myApi in the browser's address bar. Unfortunately, I get a 404. I'm just trying to create an API endpoint that returns a hard-coded set of JSON objects. I need this to test some client-side JavaScript. What am I doing wrong?
Here are how my routes are registered:
WebApiConfig.cs
public static void Register(HttpConfiguration config)
{
config.MapHttpAttributeRoutes();
config.Routes.MapHttpRoute(
name: "DefaultApi",
routeTemplate: "api/{controller}/{id}",
defaults: new { id = RouteParameter.Optional }
);
}
RouteConfig.cs
public static void RegisterRoutes(RouteCollection routes)
{
routes.IgnoreRoute("{resource}.axd/{*pathInfo}");
routes.MapRoute(
name: "Default",
url: "{controller}/{action}/{id}",
defaults: new { controller = "Home", action = "Index", id = UrlParameter.Optional }
);
}
Make sure that you have the WebApiConfig registration being called, possibly in the Global.asax Application_Start() method. Something like:
protected void Application_Start()
{
AreaRegistration.RegisterAllAreas();
WebApiConfig.Register(GlobalConfiguration.Configuration);
FilterConfig.RegisterGlobalFilters(GlobalFilters.Filters);
RouteConfig.RegisterRoutes(RouteTable.Routes);
BundleConfig.RegisterBundles(BundleTable.Bundles);
}
You did not add method name at the end of call. Try this one:
http://localhost:61549/api/myapi/get
Try this approach
namespace MyProject.Controllers
{
public class MyApiController : ApiController
{
public IHttpActionResult Get()
{
var results = new List<ResultModel>
{
new ResultModel() {ResultId = 1, ResultName = "Bill"},
new ResultModel() {ResultId = 2, ResultName = "Ted"}
};
return Ok(results);
}
}
public class ResultModel
{
public int ResultId { get; set; }
public string ResultName { get; set; }
}
}
Api: http://localhost:61549/api/MyApi/get
Hope this helps.

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