actix-website/content/docs/static-files.md

title	menu	weight
Static Files	docs_advanced	230

Individual file

It is possible to serve static files with a custom path pattern and NamedFile. To match a path tail, we can use a [.*] regex.

use std::path::PathBuf;
use actix_web::{App, HttpRequest, Result, http::Method, fs::NamedFile};

fn index(req: &HttpRequest) -> Result<NamedFile> {
    let path: PathBuf = req.match_info().query("tail")?;
    Ok(NamedFile::open(path)?)
}

fn main() {
    App::new()
        .resource(r"/a/{tail:.*}", |r| r.method(Method::GET).f(index))
        .finish();
}

Directory

To serve files from specific directories and sub-directories, StaticFiles can be used. StaticFiles must be registered with an App::handler() method, otherwise it will be unable to serve sub-paths.

use actix_web::{App, fs};

fn main() {
    App::new()
        .handler(
            "/static",
            fs::StaticFiles::new(".")
                .show_files_listing())
        .finish();
}

The parameter is the base directory. By default files listing for sub-directories is disabled. Attempt to load directory listing will return 404 Not Found response. To enable files listing, use StaticFiles::show_files_listing() method.

Instead of showing files listing for directory, it is possible to redirect to a specific index file. Use the StaticFiles::index_file() method to configure this redirect.

Configuration

Generic trait StaticFileConfig can be used to specify various options for serving files:

• content_disposition_map - function to be used for mapping file's mime to corresponding Content-Disposition type
• is_use_etag - specifies whether ETag shall be calculated and included in headers.
• is_use_last_modifier - specifies whether file modified timestamp should be used and added to Last-Modified header.
• is_method_allowed - allows to control which HTTP methods are allowed to be used when accessing file.

All of the above methods are optional and provided with the best defaults. But it is possible to customize any of them by implementing the trait onto own struct.

extern crate mime;
extern crate actix_web;
use actix_web::{App, HttpRequest, Result, http::Method};
use actix_web::fs::{StaticFileConfig, NamedFile};
use actix_web::http::header::DispositionType;

use std::path::PathBuf;

#[derive(Default)]
struct MyConfig;

impl StaticFileConfig for MyConfig {
    fn content_disposition_map(typ: mime::Name) -> DispositionType {
        DispositionType::Attachment
    }
}

fn index(req: &HttpRequest) -> Result<NamedFile> {
    let path: PathBuf = req.match_info().query("tail")?;
    Ok(NamedFile::open_with_config(path, MyConfig)?)
}

fn main() {
    App::new()
        .resource(r"/a/{tail:.*}", |r| r.method(Method::GET).f(index))
        .finish();
}

The Configuration cal also be applied to directory service:

extern crate actix_web;

use actix_web::{App};
use actix_web::fs::{StaticFileConfig, StaticFiles};

#[derive(Default)]
struct MyConfig;

impl StaticFileConfig for MyConfig {
    fn is_use_etag() -> bool {
        false
    }

    fn is_use_last_modifier() -> bool {
        false
    }
}

fn main() {
    App::new()
        .handler(
            "/static",
            StaticFiles::with_config(".", MyConfig)
                .show_files_listing()
        ).finish();
}