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main.rs
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main.rs
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//! Run with
//!
//! ```not_rust
//! cargo run -p example-readme
//! ```
use axum::{
http::StatusCode,
response::IntoResponse,
routing::{get, post},
Json, Router,
};
use serde::{Deserialize, Serialize};
#[tokio::main]
async fn main() {
// initialize tracing
tracing_subscriber::fmt::init();
// build our application with a route
let app = Router::new()
// `GET /` goes to `root`
.route("/", get(root))
// `POST /users` goes to `create_user`
.route("/users", post(create_user));
// run our app with hyper
let listener = tokio::net::TcpListener::bind("127.0.0.1:3000")
.await
.unwrap();
tracing::debug!("listening on {}", listener.local_addr().unwrap());
axum::serve(listener, app).await.unwrap();
}
// basic handler that responds with a static string
async fn root() -> &'static str {
"Hello, World!"
}
async fn create_user(
// this argument tells axum to parse the request body
// as JSON into a `CreateUser` type
Json(payload): Json<CreateUser>,
) -> impl IntoResponse {
// insert your application logic here
let user = User {
id: 1337,
username: payload.username,
};
// this will be converted into a JSON response
// with a status code of `201 Created`
(StatusCode::CREATED, Json(user))
}
// the input to our `create_user` handler
#[derive(Deserialize)]
struct CreateUser {
username: String,
}
// the output to our `create_user` handler
#[derive(Serialize)]
struct User {
id: u64,
username: String,
}