rust - 如何在 Warp 中创建可变路径？

Question

我正在尝试在 Warp 中设置可变路径。我试过这个:

use uuid::Uuid;
use warp::{self, Filter};

fn main() {
    let uuid = Uuid::new_v4();

    println!("{}", uuid);

    let hello = warp::path(&uuid.to_string()).map(|| "hello world");

    warp::serve(hello).run(([127, 0, 0, 1], 8080));
}

但是我得到了错误:

error[E0716]: temporary value dropped while borrowed
 --> src/main.rs:9:29
  |
9 |     let hello = warp::path(&uuid.to_string()).map(|| "hello world");
  |                 ------------^^^^^^^^^^^^^^^^-                      - temporary value is freed at the end of this statement
  |                 |           |
  |                 |           creates a temporary which is freed while still in use
  |                 argument requires that borrow lasts for `'static`

让路径参数具有'static 生命周期的最佳方法是什么？

Answer 1

您可以通过泄漏从分配的字符串中获取静态字符串。

let uuid_str = Box::leak(uuid.to_string().into_boxed_str());
let hello = warp::path(uuid_str).map(|| "hello world");