英文:
how get query string with route attribute
问题
我的项目是.NET Core，如果我打开这个URL domain.com?param1=val1&param2=val2，它会命中这个操作：
public class HomeController : Controller
{
public IActionResult Index()
{
return View();
}
}
而我想要的是，如果有人请求像这样的URL domain.com?param1=val1&param2=val2，就命中这个控制器 RouteController => Index()：
public class RouteController : Controller
{
[Route(@"{*:regex(([^=]+)\=([^&]+))")]
public IActionResult Index()
{
return View();
}
}
我认为我应该使用 [Route(@"{*:regex(([^=]+)\=([^&]+))")]，但它不起作用！
英文:
My project is .net core and if I open this URL domain.com?param1=val1&param2=val2 it hit this action:
public class HomeController : Controller
{
public IActionResult Index()
{
return View();
}
}
in stand of HomeController ==> Index() I want if someone requests URL like this domain.com?param1=val1&param2=val2 hit this controller RouteController ==> Index():
public class RouteController : Controller
{
[Route(@"{*:regex(([^=]+)\=([^&]+))")]
public IActionResult Index()
{
return View();
}
}
I think I should use [Route(@"{*:regex(([^=]+)\=([^&]+))")] but it doesn't work!
答案1
得分: 3
你想要实现的场景是，当用户发送带有 domain.com 的请求时，它将正常路由到 Home/Index，但当用户发送带有 domain.com?{任意查询字符串} 的请求时，它将路由到 Route/Index？
我尝试自定义了 IRouteConstraint 并将其添加到路由模板中，希望这是您想要的：
public class MyRouteConstraint : IRouteConstraint
{
public bool Match(HttpContext? httpContext, IRouter? route, string routeKey, RouteValueDictionary values, RouteDirection routeDirection)
{
if (httpContext.Request.Query.Count > 0)
{
// 如果存在查询字符串，则路由到 Route/Index
return false;
}
// 如果没有查询字符串，则路由到 Home/Index
return true;
}
}
Program.cs
app.MapControllerRoute(
name: "default",
pattern: "{controller=Home}/{action=Index}/{id?}",
constraints: new { customConstraint = new MyRouteConstraint() }
);
app.MapControllerRoute(
name: "query",
pattern: "{controller=route}/{action=Index}"
);
演示动画
英文:
Do you wanna achieve the scenario like when user send request with domain.com, It will route to Home/Index normally, But when user send request with domain.com?{any query string}, It will route to Route/Index?
I try to custom IRouteConstraint and add it will the route templated, Hope it is what you want.
public class MyRouteConstraint : IRouteConstraint
{
public bool Match(HttpContext? httpContext, IRouter? route, string routeKey, RouteValueDictionary values, RouteDirection routeDirection)
{
if (httpContext.Request.Query.Count > 0)
{
// Route to Route/Index if query string is present
return false;
}
// Route to Home/Index if no query string is present
return true;
}
}
Program.cs
app.MapControllerRoute(
name: "default",
pattern: "{controller=Home}/{action=Index}/{id?}",
constraints: new { customConstraint = new MyRouteConstraint() }
);
app.MapControllerRoute(
name: "query",
pattern: "{controller=route}/{action=Index}"
);
Gif Demo
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