Add Multipart extractor for consuming multipart/form-data requests (#32)

Multipart implementation on top of `multer`
2026-08-25 00:00:23 +02:00 · 2021-07-14 16:53:37 +02:00
parent e641caefaf
commit 028c472c84
7 changed files with 358 additions and 103 deletions
@@ -0,0 +1,59 @@
+use axum::{
+    extract::{ContentLengthLimit, Multipart},
+    prelude::*,
+};
+use std::net::SocketAddr;
+
+#[tokio::main]
+async fn main() {
+    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);
+    hyper::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());
+    }
+}