asp.net-core - asp.net core 中 NotFoundObjectResult 的自定义页面

Question

如何为 NotFoundObjectResult 结果创建自定义页面？

实际上，当我返回此结果时，应用程序仅在页面中显示 id。

return new NotFoundObjectResult(id);

每次获得 NotFoundObjectResult 时，我都需要重定向到“/errors/notfound”。

Answer 1

您可以将 app.UseStatusCodePagesWithReExecute 或 app.UseStatusCodePagesWithRedirect 添加到管道(在 app.UseMvc 之前)。这将拦截任何状态代码在 400 到 600 之间且尚无正文的响应。

在您的 Startup 类中:

app.UseStatusCodePagesWithReExecute("/statuscode/{0}");

然后添加一个新的 Controller :

public class HttpStatusController: Controller
{
    [HttpGet("statuscode/{code}")]
    public IActionResult Index(HttpStatusCode code)
    {
        return View(code);
    }
}

并添加一个 View Views/HttpStatus/Index.cshtml:

@model System.Net.HttpStatusCode
@{
    ViewData["Title"] = "Error " + (int)Model;
}

<div class="jumbotron">
    <h1>Error @((int)Model)!</h1>
    <p><a asp-area="" asp-controller="Home" asp-action="Index">Home</a></p>
</div>

现在您只需从 Controller 返回所需的状态代码，无需添加任何可选主体:

//These would end up in the new HttpStatus controller, they just specify the status code
return StatusCode(404);
return new StatusCodeResult(404);

//Any of these won't, as they add either the id or an object to the response's body
return StatusCode(404, 123);
return StatusCode(404, new { id = 123 });
return new NotFoundObjectResult(123);