首先.route("/keys", get(list_keys)), 通过 get 将一个函数 Box 起来转为MethodRouter<S = (), E = Infallible>, 之后通过route将其插入到Endpoint::MethodRouter, 由于还没有附加 State, 所以其内部类型对应 BoxedIntoRoute,即缺少 State 的那个类型。 之后看.with_state(Arc::clone(&shared_state)) ...
如果我们需要向中间件添加应用程序状态,可以将其添加到处理程序函数中,然后使用 middleware::from_fn_with_state: fn init_router() -> Router { let state = setup_state(); // 初始化应用状态 Router::new() .route("/", get(hello_world)) .layer(middleware::from_fn_with_state(state.clone(), ...
在这里,我们定义了一个用于中间件的State。应当注意,它内部的限流工具使用了Arc来包裹,并且State实现了Clone特质。这种写法可以保证limiter可以在多个线程/协程之间使用同一个RateLimiter实例。接下来,我们稍微修改中间件部分的from_fn,更换为from_fn_with_state: letstate= LimitState::new();letapp= Router::new()...
Axum 允许在应用中共享状态，这对于数据库连接、配置等非常有用：use axum::{Router, extract::State}...
breaking:Router::with_stateis no longer a constructor. It is instead used to convert the router into aRouterService(#1532) This nested router on 0.6.0-rc.4 Router::with_state(state).route(...); Becomes this in 0.6.0-rc.5 Router::new().route(...).with_state(state); ...
get};use sqlx::PgPoolOptions;#[derive(Clone)]struct AppState{db:PgPool}#[tokio::main]asyncfnmain(){letpool=PgPoolOptions::new().max_connections(5).connect(<数据库地址>).await;letstate=AppState{pool};letrouter=Router::new().route("/",get(hello_world)).with_state(state);//... 其余...
breaking: handler::{WithState, IntoService} are merged into one type, named HandlerService (#1418) changed: The default body limit now applies to the Multipart extractor (#1420) added: String and binary From impls have been added to extract::ws::Message to be more inline with tungstenite ...
.unwrap();// build our application with some routes and a broadcast channel let app = Router::new() .fallback_service(ServeDir::new(assets_dir).append_index_html_on_directories(true)) .route("/ws", any(ws_handler)) .with_state(broadcast::channel::<String>(16).0);let...
with_state(influxdb_handler) throws Compiling servers v0.7.0 (/Users/tison/GreptimeWorkspace/greptimedb/src/servers) error[E0277]: the trait bound `Infallible: std::convert::From<Box<(dyn StdError + std::marker::Send + std::marker::Sync + 'static)>>` is not satisfied --> src/...
1.定义调用handle_server_fn_with_context的server_fn_handler，再次在上下文中提供状态 1.定义某种提取...