axum/examples/multipart_form.rs
2021-08-05 19:43:03 +02:00

69 lines
1.8 KiB
Rust

//! Run with
//!
//! ```not_rust
//! cargo run --example multipart_form --features=multipart
//! ```
use axum::{
extract::{ContentLengthLimit, Multipart},
prelude::*,
};
use std::net::SocketAddr;
#[tokio::main]
async fn main() {
// Set the RUST_LOG, if it hasn't been explicitly defined
if std::env::var("RUST_LOG").is_err() {
std::env::set_var("RUST_LOG", "multipart_form=debug,tower_http=debug")
}
tracing_subscriber::fmt::init();
// build our application with some routes
let app = route("/", get(show_form).post(accept_form))
.layer(tower_http::trace::TraceLayer::new_for_http());
// run it with hyper
let addr = SocketAddr::from(([127, 0, 0, 1], 3000));
tracing::debug!("listening on {}", addr);
axum::Server::bind(&addr)
.serve(app.into_make_service())
.await
.unwrap();
}
async fn show_form() -> response::Html<&'static str> {
response::Html(
r#"
<!doctype html>
<html>
<head></head>
<body>
<form action="/" method="post" enctype="multipart/form-data">
<label>
Upload file:
<input type="file" name="file" multiple>
</label>
<input type="submit" value="Upload files">
</form>
</body>
</html>
"#,
)
}
async fn accept_form(
ContentLengthLimit(mut multipart): ContentLengthLimit<
Multipart,
{
250 * 1024 * 1024 /* 250mb */
},
>,
) {
while let Some(field) = multipart.next_field().await.unwrap() {
let name = field.name().unwrap().to_string();
let data = field.bytes().await.unwrap();
println!("Length of `{}` is {} bytes", name, data.len());
}
}