我正在尝试构建一个带有多个端点的rest API。一些端点之间的关联性可能比其他端点更强，因此我想在多个文件中实现它们。我有点爱上了poem，因为它的简单性，但如果有人能提供一个框架，以更简单的方式解决我的问题（并且性能不是这个应用程序的优先事项），我愿意给予它。
我的希望是，我可以在多个结构中实现Endpoint中的方法。在我所做的尝试中，我要么得到一个错误conflicting implementations of trait或cannot find attribute。有关错误的更多细节，请参阅some_endpoints.rs的实现。这是一个可以产生我看到的错误的最小示例：

// main.rs
use poem::{listener::TcpListener, Route};
use poem_openapi::{OpenApi, OpenApiService};

pub struct Endpoints;
#[OpenApi]
impl Endpoints {}

mod some_endpoints;
mod more_endpoints;

#[tokio::main]
async fn main() -> Result<(), std::io::Error> {
    let api = OpenApiService::new(Endpoints, "My app", "1.0");

    let docs = api.swagger_ui();
    let app = Route::new()
        .nest("/api", api)
        .nest("/", docs);
    poem::Server::new(TcpListener::bind("127.0.0.1:3000"))
        .run(app)
        .await
}

// some_endpoints.rs
use super::Endpoints;
use poem_openapi::OpenApi;
use poem_openapi::payload::PlainText;

// If `#[OpenApi]` here, I get the following errors:
//   error[E0119]: conflicting implementations of trait `OpenApi` for type `Endpoints`
//   conflicting implementation for `Endpoints`
#[OpenApi]
impl Endpoints {
    /// Some dummy endpoints
    ///
    // If `#[OpenApi]` is commented out above, I get the following errors:
    //   error: cannot find attribute `oai` in this scope
    #[oai(path = "/dummy", method = "get")]
    async fn dummy(&self) -> PlainText<&'static str> {
        PlainText("Hello, world!")
    }
}

// more_endpoints.rs
// This is basically a copy of `some_endpoints.rs`, and can be left out of 
// this example if `Endpoint` can be first defined in `main.rs`.

# Cargo.toml
# ...
[dependencies]
poem = "1.3.55"
poem-openapi = { version = "2.0.26", features = ["swagger-ui"] }
tokio = { version = "1", features = ["full"] }