Get POST Values From HTML Form Input In axum

[package]
name = "axum_post_process"
version = "0.1.0"
edition = "2021"

[dependencies]
tokio = { version = "1", features = ["full"] }
axum = { version = "0.6", features = ["form"] }
serde = { version = "1", features = ["derive"] }
serde_json = "1.0.105"

use axum::extract::Form;
use axum::response::IntoResponse;
use axum::response::Redirect;
use axum::routing::get;
use axum::routing::post;
use axum::{response::Html, Router};
use serde::Deserialize;
use std::net::SocketAddr;

#[tokio::main]
async fn main() {
    let routes = Router::new()
        .route("/", post(post_handler).get(get_handler))
        .route("/success", get(get_success_handler));
    let addr = SocketAddr::from(([127, 0, 0, 1], 8484));
    axum::Server::bind(&addr)
        .serve(routes.into_make_service())
        .await
        .unwrap();
}

#[derive(Deserialize, Debug)]
struct FormData {
    alfa: String,
}

async fn post_handler(Form(request): Form<FormData>) -> impl IntoResponse {
    println!("Got: {}", request.alfa);
    Redirect::to("/success")
}

async fn get_handler() -> impl IntoResponse {
    println!("Got GET at /");
    Html(format!(
        r#"
<form action="/" method="post">
<input type="hidden" name="alfa" value="bravo"/>
<input type="submit"/>
</form>"#
    ))
}

async fn get_success_handler() -> impl IntoResponse {
    println!("Got GET at /success");
    Html(format!(r#"<div>success!</div>"#))
}