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examples/forms/multipart-async-std/src/main.rs

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use actix_multipart::Multipart;
use actix_web::{middleware, web, App, Error, HttpResponse, HttpServer};
use async_std::prelude::*;
use futures::{StreamExt, TryStreamExt};
async fn save_file(mut payload: Multipart) -> Result<HttpResponse, Error> {
// iterate over multipart stream
while let Ok(Some(mut field)) = payload.try_next().await {
let content_type = field
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.content_disposition().ok_or(actix_web::error::ParseError::Incomplete)?;
let filename = content_type
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.get_filename().ok_or(actix_web::error::ParseError::Incomplete)?;
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let filepath = format!("./tmp/{}", sanitize_filename::sanitize(&filename));
let mut f = async_std::fs::File::create(filepath).await?;
// Field in turn is stream of *Bytes* object
while let Some(chunk) = field.next().await {
let data = chunk.unwrap();
f.write_all(&data).await?;
}
}
Ok(HttpResponse::Ok().into())
}
fn index() -> HttpResponse {
let html = r#"<html>
<head><title>Upload Test</title></head>
<body>
<form target="/" method="post" enctype="multipart/form-data">
<input type="file" multiple name="file"/>
<button type="submit">Submit</button>
</form>
</body>
</html>"#;
HttpResponse::Ok()
.content_type("text/html; charset=utf-8")
.body(html)
}
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#[actix_web::main]
async fn main() -> std::io::Result<()> {
std::env::set_var("RUST_LOG", "actix_server=info,actix_web=info");
async_std::fs::create_dir_all("./tmp").await?;
let ip = "0.0.0.0:3000";
HttpServer::new(|| {
App::new().wrap(middleware::Logger::default()).service(
web::resource("/")
.route(web::get().to(index))
.route(web::post().to(save_file)),
)
})
.bind(ip)?
.run()
.await
}