actix.rs

use actix_web::{
    middleware, web, App, HttpResponse, HttpServer,
};
use serde::{Deserialize, Serialize};

#[derive(Debug, Serialize, Deserialize)]
struct Person {
  name: String,
  number: i32,
}

// this handler uses json extractor
async fn index(item: web::Json<Person>) -> HttpResponse {
  println!("model: {:?}", &item);
  HttpResponse::Ok().json(item.0) // <- send response
}

#[actix_web::main]
async fn main() -> std::io::Result<()> {
  std::env::set_var("RUST_LOG", "actix_web=info");
  env_logger::init();

  HttpServer::new(|| {
    App::new()
      .wrap(middleware::Logger::default())
      .data(web::JsonConfig::default().limit(4096))
      .service(web::resource("/").route(web::post().to(index)))
  })
  .bind("127.0.0.1:8080")?
  .run()
  .await
}