pub fn handler_with_doc<F, Fut, T>( f: F, summary: &str, description: &str, ) -> Arc<dyn Handler>where F: Fn(Request) -> Fut + Send + Sync + 'static, Fut: Future<Output = Result<T>> + Send + 'static, T: Into<Response> + Send + 'static,
便捷构造:将基于 Request 的处理函数包装为 Arc<dyn Handler> 并注册文档
Arc<dyn Handler>