如何让HandleErrorAttribute与Ajax一起工作？

GlobalFilters.Filters.Add(new HandleErrorAttribute());

public class ErrorController : Controller
{
    public ActionResult Index()
    {
        return View();
    }
}

<customErrors mode="On" defaultRedirect="~/Error/Index">
    <error statusCode="404" redirect="~/Error/Index" />
</customErrors>

[HandleError]
public ActionResult MyAction()
{
    // 代码逻辑
    throw new Exception("发生了一个错误");
}

[HandleError]
public ActionResult MyAction()
{
    try
    {
        // 代码逻辑
        throw new Exception("发生了一个错误");
    }
    catch (Exception ex)
    {
        if (Request.IsAjaxRequest())
        {
            return Json(new { error = ex.Message });
        }
        else
        {
            throw;
        }
    }
}

$.ajax({
    url: '/Controller/MyAction',
    type: 'POST',
    dataType: 'json',
    success: function (data) {
        // 处理成功的情况
    },
    error: function (xhr, status, error) {
        // 处理错误的情况
        alert(xhr.responseJSON.error);
    }
});