ASP.NET Core知多少（13）：路由重写及重定向

public class CustomRewriteMiddleware
{
    private readonly RequestDelegate _next;

    //Your constructor will have the dependencies needed for database access
    public CustomRewriteMiddleware(RequestDelegate next)
    {
        _next = next;
    }

    public async Task Invoke(HttpContext context)
    {
        var path = context.Request.Path.ToUriComponent().ToLowerInvariant();
        var thingid = context.Request.Query["thingid"].ToString();

        if (path.Contains("/lockweb"))
        {
            var templateController = GetControllerByThingid(thingid);

            context.Request.Path =  path.Replace("lockweb", templateController);
        }

        //Let the next middleware (MVC routing) handle the request
        //In case the path was updated, the MVC routing will see the updated path
        await _next.Invoke(context);

    }

    private string GetControllerByThingid(string thingid)
    {
        //some logic
        return "yinhua";
    }
}

public void Configure(IApplicationBuilder app
{
  //some code
  app.UseMiddleware<CustomRewriteMiddleware>();
  app.UseMvcWithDefaultRoute();
}