如何将查询字符串传递给actix-web中的HttpRequest.url_for()？

use actix_web::{web, App, HttpRequest, HttpResponse, HttpServer, Responder};
use serde::Deserialize;

#[derive(Deserialize)]
struct QueryParams {
    name: String,
    age: u32,
}

async fn index(req: HttpRequest) -> impl Responder {
    // 从HttpRequest对象中提取查询参数
    let query_params = web::Query::<QueryParams>::from_query(req.query_string())
        .expect("Failed to parse query parameters");

    // 构建URL并将查询字符串传递给url_for方法
    let url = req.url_for("foo", &["id", "name"], &query_params);

    match url {
        Ok(url) => HttpResponse::Ok().body(url.to_string()),
        Err(_) => HttpResponse::InternalServerError().finish(),
    }
}

#[actix_rt::main]
async fn main() -> std::io::Result<()> {
    HttpServer::new(|| {
        App::new()
            .route("/", web::get().to(index))
            .route("/foo/{id}/{name}", web::get().to(index).name("foo"))
    })
    .bind("127.0.0.1:8080")?
    .run()
    .await
}