Rust:axum學習筆記(5) 處理靜態資源

接上一篇繼續，靜態資源比如css/js/jpg等，一般不需要服務端做額外的業務處理，直接透傳給瀏覽器就行，axum可以指定將某個目錄指定為靜態資源，參考下面的代碼：

    let app = Router::new()
        .nest(
            "/static",
            get_service(ServeDir::new(".")).handle_error(|error: std::io::Error| async move {
                (
                    StatusCode::INTERNAL_SERVER_ERROR,
                    format!("Unhandled internal error: {}", error),
                )
            }),
        )

這一段的意思是將當前目錄設置為靜態資源目錄，用/static訪問，當然這個.也可以換成絕對路徑。

假設項目的結構如上，要訪問static_file/src/main.rs，直接用http://localhost:3000/static/static_file/src/main.rs 訪問，效果如下：

最后附加上完整代碼：

cargo.toml

[package]
name = "static_file"
version = "0.1.0"
edition = "2021"

# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html

[dependencies]
axum =  {version = "0.4.3", features = ["headers"] }
tokio = { version = "1.0", features = ["full"] }
tracing = "0.1"
tracing-subscriber = { version="0.3", features = ["env-filter"] }
tower-http = { version = "0.2.0", features = ["fs", "trace"] }

main.rs

use axum::{http::StatusCode, routing::{get_service,get}, Router};
use std::net::SocketAddr;
use tower_http::{services::ServeDir, trace::TraceLayer};

#[tokio::main]
async fn main() {
    // Set the RUST_LOG, if it hasn't been explicitly defined
    if std::env::var_os("RUST_LOG").is_none() {
        std::env::set_var(
            "RUST_LOG",
            "example_static_file_server=debug,tower_http=debug",
        )
    }
    tracing_subscriber::fmt::init();

    let app = Router::new()
        .nest(
            "/static",
            get_service(ServeDir::new(".")).handle_error(|error: std::io::Error| async move {
                (
                    StatusCode::INTERNAL_SERVER_ERROR,
                    format!("Unhandled internal error: {}", error),
                )
            }),
        )
        .route("/", get(|| async { "Hello, World!" }))
        .layer(TraceLayer::new_for_http());

    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();
}