Rust Rocket -- Hello World

• 使用 CLion 新建项目
• 构建
  • 设置 Rust 编译器版本
  • 添加依赖到 Cargo.toml
  • 源码
  • 运行

使用 CLion 新建项目

目录路径 ~/rocket_hello_world

构建¹

Rocket 只能使用 nightly 版本 进行编译。

Rocket makes abundant use of Rust’s syntax extensions and other advanced, unstable features. Because of this, we’ll need to use a nightly version of Rust

设置 Rust 编译器版本

全局设置

rustup default nightly

单个项目设置

rustup override set nightly

$ cat ~/.rustup/settings.toml
default_host_triple = "x86_64-apple-darwin"
default_toolchain = "stable-x86_64-apple-darwin"
profile = "default"
version = "12"

[overrides]
"~/rocket_hello_world" = "nightly-x86_64-apple-darwin"

$ rustc -V
rustc 1.48.0-nightly (73dc675b9 2020-09-06)

添加依赖到 Cargo.toml

[dependencies]
rocket = "0.4.5"

源码

main.rs

#![feature(proc_macro_hygiene, decl_macro)]

#[macro_use] extern crate rocket;

#[get("/")]
fn index() -> &'static str {
    "Hello, world!"
}

fn main() {
    rocket::ignite().mount("/", routes![index]).launch();
}

运行

cargo run

1. https://rocket.rs/v0.4/guide/getting-started/ ↩