c# – Web API 2 RoutePrefix不起作用

在控制器级别定义RoutePrefix时,当我尝试使用前缀为http：// localhost：55020 / api / v2 / dummy / get的URL访问API类时,它会抛出404.这个http：// localhost：55020 / api / dummy / get工作得非常好.

这是控制器类,其中定义了RoutePrefix

[RoutePrefix("v2/dummy")]
    public class DummyController : ApiController
    {
        // GET api/values
        [SwaggerOperation("Get")]
        public IEnumerable<string> Get()
        {
            return new string[] { "value1","value2","value3" };
        }
    }

这是WebApiConfig

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}/{id}",defaults: new { id = RouteParameter.Optional }
            );
        }
    }

解决方法

请改用属性路由

public class DummyController : ApiController
{
    // GET api/values
    [HttpGet]
    [Route("api/v2/dummy/get")]
    public IEnumerable<string> Get()
    {
        return new string[] { "value1","value3" };
    }
}

如果你想要路由前缀那么

[RoutePrefix("api/v2/dummy")]
public class DummyController : ApiController
{
    // GET api/v2/dummy
    [HttpGet]
    [Route("get")]
    public IEnumerable<string> Get()
    {
        return new string[] { "value1","value3" };
    }
}