Struct axum::extract::Multipart

pub struct Multipart { /* private fields */ }

Extractor that parses multipart/form-data requests commonly used with file uploads.

Example

use axum::{
    extract::Multipart,
    routing::post,
    Router,
};
use futures::stream::StreamExt;

async fn upload(mut multipart: Multipart) {
    while let Some(mut 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());
    }
}

let app = Router::new().route("/upload", post(upload));

For security reasons its recommended to combine this with ContentLengthLimit to limit the size of the request payload.

Implementations

impl Multipart

pub async fn next_field(&mut self) -> Result<Option<Field<'_>>, MultipartError>

This is supported on crate feature multipart only.

Yields the next Field if available.

Trait Implementations

impl Debug for Multipart

This is supported on crate feature multipart only.

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl<B> FromRequest<B> for Multipart where
    B: HttpBody<Data = Bytes> + Default + Unpin + Send + 'static,
    B::Error: Into<BoxError>, 

This is supported on crate feature multipart only.

type Rejection = MultipartRejection

If the extractor fails it’ll use this “rejection” type. A rejection is a kind of error that can be converted into a response.

fn from_request<'life0, 'async_trait>(
    req: &'life0 mut RequestParts<B>
) -> Pin<Box<dyn Future<Output = Result<Self, Self::Rejection>> + Send + 'async_trait>> where
    'life0: 'async_trait,
    Self: 'async_trait, 

Perform the extraction.