如何在actix处理程序中设置查询参数的默认选项？

[dependencies]
actix-web = "x.x.x"   // x.x.x为actix-web的版本号

#[derive(Deserialize)]
struct MyQueryParams {
    page: Option<usize>,
}

[dependencies]
serde = "x.x.x"   // x.x.x为serde的版本号
serde_derive = "x.x.x"   // x.x.x为serde_derive的版本号

use serde::Deserialize;
use actix_web::{web, HttpResponse};

async fn my_handler(query_params: web::Query<MyQueryParams>) -> HttpResponse {
    let page = query_params.page.unwrap_or(1);   // 设置page字段的默认值为1
    // 其他逻辑处理
    HttpResponse::Ok().body(format!("Current page: {}", page))
}

use actix_web::{web, App, HttpServer};

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