Rust 从Actix web应用程序中间件访问应用程序状态

我有一个简单的中间件，用于访问应用程序的全局状态以执行身份验证令牌的验证：

use actix_web;
use actix_web::HttpMessage;

pub struct Authenticator;

impl<S> actix_web::middleware::Middleware<S> for Authenticator {
    fn start(
        &self,
        request: &mut actix_web::HttpRequest<S>,
    ) -> actix_web::Result<actix_web::middleware::Started> {
        //let _state = request.state() as &::application::State;
        match request.headers().get("Authentication") {
            Some(_) => Ok(actix_web::middleware::Started::Done),
            None => Err(::view::error(
                "No authentication header provided",
                actix_web::http::StatusCode::FORBIDDEN,
            )),
        }
    }
}

---

使用您的状态而不是

S

：

impl actix_web::middleware::Middleware<::Application::State> for Authenticator {
}

impl actix\u web:：中间件：：验证器中间件{
}

顺便说一下，中间件也可以有状态

impl actix_web::middleware::Middleware<::Application::State> for Authenticator {
}