actix-website/examples/responses/src/json_resp.rs

// <json-resp>
use actix_web::{web, HttpResponse, Result};
use serde::{Deserialize, Serialize};

#[derive(Serialize, Deserialize)]
struct MyObj {
    name: String,
}

async fn index(obj: web::Path<MyObj>) -> Result<HttpResponse> {
    Ok(HttpResponse::Ok().json(MyObj {
        name: obj.name.to_string(),
    }))
}

#[actix_rt::main]
async fn main() -> std::io::Result<()> {
    use actix_web::{App, HttpServer};

    HttpServer::new(|| App::new().route(r"/a/{name}", web::get().to(index)))
        .bind("127.0.0.1:8088")?
        .run()
        .await
}
// </json-resp>