如何将 ASP.NET 控制器 属性 与当前 URL 的一部分绑定?

How to bind an ASP.NET controller property with part of the current URL?

我正在使用 netcoreapp1.1 (aspnetcore 1.1.1)。

我想将 url 的一部分绑定到控制器 属性 而不是在操作参数中,可以吗?

例如: 获取:https://www.myserver.com/somevalue/users/1

public class UsersController {
    public string SomeProperty {get;set;} //receives "somevalue" here

    public void Index(int id){ 
        //id = 1
    } 
}

可以使用动作过滤器:

[Route("{foo}/[controller]/{id?}")]
[SegmentFilter]
public class SegmentController : Controller
{
    public string SomeProperty { get; set; }

    public IActionResult Index(int id)
    {
    }
}

public class SegmentFilter : ActionFilterAttribute, IActionFilter
{
    public override void OnActionExecuting(ActionExecutingContext context)
    {
        //path is "/bar/segment/123"
        string path = context.HttpContext.Request.Path.Value;

        string[] segments = path.Split(new[]{"/"}, StringSplitOptions.RemoveEmptyEntries);

        //todo: extract an interface containing SomeProperty
        var controller = context.Controller as SegmentController;

        //find the required segment in any way you like
        controller.SomeProperty = segments.First();
    }
}

然后请求路径 "myserver.com/bar/segment/123" 将在执行操作 Index 之前将 SomeProperty 设置为 "bar"