我的整个数据库都有一个控制器,代码如下:
public class YogaController : DbDataController<Yoga.Models.YOGAEntities>
{
    public YogaController()
    {
    }
    public IQueryable<Yoga.Models.Action> GetActions(int BugId)
//GetActions retrieves "actions" table from the db, not Actions in MVC term 
    {
        return DbContext.Actions.Where(x => x.FK_BugsID == BugId);
    }
    public IQueryable<Yoga.Models.Label> GetRequiredLabels()
    {
        return DbContext.Labels.Where(x => x.IsRequired == true);
    }
    public IQueryable<Yoga.Models.Role> GetRoles()
    {
        return DbContext.Roles;
    }
    public IQueryable<Role> GetRoles2() //TODO: finish this
    {
        return DbContext.Roles.Where(x => x.RoleID == 1);
    }
    public IQueryable<Tag> GetTags(int actionid)
    {
        return DbContext.Tags.Where(x => x.J_Tags.Any(y => y.FK_ActionID == actionid));
    }
}
如您所见,我在一个控制器中有多个 IQueryable,每个都查询不同的表。这是被禁止的东西吗?因为当我去localhost/api/Yoga/GetActions或localhost/api/Yoga/GetRequiredLabels我收到错误消息时:
Multiple actions were found that match the request: 
 System.Linq.IQueryable`1[Yoga.Models.Label] GetRequiredLabels() on type Yoga.Controllers.YogaController
 System.Linq.IQueryable`1[Yoga.Models.Role] GetRoles() on type Yoga.Controllers.YogaController
 System.Linq.IQueryable`1[Yoga.Models.Role] GetRoles2() on type Yoga.Controllers.YogaController
当我禁用除一个 IQueryable 之外的所有 IQueryable 时,结果很好。
我搜索了类似的问题并检查了我的路由设置,控制器路径和名称没有冲突。
我的路线(默认生成):
    public static void RegisterRoutes(RouteCollection routes)
    {
        routes.IgnoreRoute("{resource}.axd/{*pathInfo}");
        routes.MapHttpRoute(
            name: "DefaultApi",
            routeTemplate: "api/{controller}/{id}",
            defaults: new { id = RouteParameter.Optional }
        );
        //routes.MapRoute(
        //    name: "Default",
        //    url: "{controller}/{action}/{id}",
        //    defaults: new { controller = "Home", action = "Index", id = UrlParameter.Optional }
        );
    }
有任何想法吗?