Web API 2自定义控制器方法。 路由问题

Question

Here is my Global.asmx

public class WebApiApplication : System.Web.HttpApplication
{
    protected void Application_Start()
    {
        GlobalConfiguration.Configure(WebApiConfig.Register);            
    }
}

Here is my WebApiConfig class.

public static class WebApiConfig
{
    public static void Register(HttpConfiguration config)
    {
        // Web API configuration and services

        // Web API routes
        config.MapHttpAttributeRoutes();

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

Here is my ApiController

public class HelloController : ApiController
{
    public string Get()
    {
        return "get method";
    }

    [Route("SayHello")]
    public string SayHello()
    {
        return "Hello Jim";
    }
}

If I browse to http://localhost:52072/api/hello/get then I will receive back "get method" as expected.

If I browse to http://localhost:52072/api/hello/SayHello then it errors with a 404 not found .

Any ideas?

Answer 1

Source : Attribute Routing in ASP.NET Web API 2

Update route

public class PaymentController : ApiController {
    public string Get() {
        return "get method";
    }

    //GET api/payment/SayHello
    [HttpGet]    
    [Route("api/payment/SayHello")]
    public string SayHello() {
        return "Hello Jim";
    }
}

You could also use route prefix

[RoutePrefix("api/payment")]
public class PaymentController : ApiController {
    //GET api/payment/Get
    [HttpGet]
    [Route("Get")]
    public string Get() {
        return "get method";
    }
    //GET api/payment/Sayhello
    [HttpGet]
    [Route("SayHello")]
    public string SayHello() {
        return "Hello Jim";
    }
}

Answer 2

Set attribute routing match with your request url, and either you need to prefix Get in the method name or need to put [HttpGet] annpotation before the method

[HttpGet]
[Route("api/payment/SayHello")]
public string SayHello()
{
   return "Hello Jim";
}

or rename method name and prefix Get before it

[Route("api/payment/SayHello")]
public string GetSayHello()
{
   return "Hello Jim";
}