Rust - 日志Json输出

依赖: Cargo.toml

[dependencies]
actix-web = "4"

log = "0.4.17"
tracing = "0.1.34"
tracing-subscriber = { version = "0.3.11", features = ["json", "valuable"] }

使用：

use actix_web::{App, HttpServer, Responder, get};
use tracing::info;
use tracing::{Level};


#[actix_web::main]
async fn main() -> std::io::Result<()> {
    tracing_subscriber::fmt().with_max_level(Level::INFO).json().init();
    info!("start at http://127.0.0.1:80/");
    HttpServer::new(|| {
        App::new().service(index)
    }).bind(("0.0.0.0", 80))?.run().await
}

#[get("/")]
async fn index() -> impl Responder {
    let sid = "123123";
    let did = "1231234444";
    let t = 123;

    info!(sid, did, "this is a message {}", t);

    "hello, web actix".to_string()
}

输出到stdout