如何用Rust获取本机CPU、内存在Web网页中显示？

目录

一、需求描述

二、具体操作步骤

三、知识点

1、systemstat

2、Actix 

---

一、需求描述

需求：

1、需要使用Rust进行后端开发获取本机CPU和内存信息；

2、使用WEB框架发布API；

3、然后使用HTML/CSS/JavaScript进行前端开发，显示结果；

以下是一个简单的示例，展示了如何获取系统信息并使用Actix-Web提供API，然后在前端使用JavaScript来实时刷新数据。

二、具体操作步骤

修改Cargo.toml，添加用到的依赖

[dependencies]systemstat = "0.2.3"actix-web = "3.3.2"

PS E:\RustroverProjects> cargo add systemstat

    Updating crates.io index

      Adding systemstat v0.2.3 to dependencies                                                                                                                                     

             Features:

             - serde

             - the_serde

    Updating crates.io index

PS E:\RustroverProjects> cargo add actix-web 

    Blocking waiting for file lock on package cache

    Updating crates.io index

      Adding actix-web v3.3.2 to dependencies                                                                                                                                      

             Features:

             + compress

             - open-ssl

             - openssl

             - rust-tls

             - rustls

             - secure-cookies 

             - secure-cookies

 

 代码如下：

use std::thread;use std::time::Duration;use systemstat::{System, Platform, saturating_sub_bytes};use actix_web::{get, web, App, HttpResponse, HttpServer, Responder};async fn sys_info() -> String {    let sys = System::new();    let mut cpu_info = String::new();    let mut memory_info = String::new();    match sys.cpu_load_aggregate() {        Ok(cpu)=> {            println!("\nMeasuring CPU load...");            thread::sleep(Duration::from_secs(1));            let cpu = cpu.done().unwrap();            println!("\nCPU load: {}% user, {}% nice, {}% system, {}% intr, {}% idle ",                     cpu.user * 100.0, cpu.nice * 100.0, cpu.system * 100.0, cpu.interrupt * 100.0, cpu.idle * 100.0);            cpu_info = format!("\nCPU load: {}% user, {}% nice, {}% system, {}% intr, {}% idle ",cpu.user * 100.0, cpu.nice * 100.0, cpu.system * 100.0, cpu.interrupt * 100.0, cpu.idle * 100.0);        },        Err(x) => println!("\nCPU load: error: {}", x)    }    match sys.memory() {        Ok(mem) => {            println!("\nMemory: {} used / {} ({} bytes) total ({:?})", saturating_sub_bytes(mem.total, mem.free), mem.total, mem.total.as_u64(), mem.platform_memory);            memory_info = format!("\nMemory: {} used / {} ({} bytes) total ({:?})", saturating_sub_bytes(mem.total, mem.free), mem.total, mem.total.as_u64(), mem.platform_memory);        },        Err(x) => println!("\nMemory: error: {}", x)    }    format!("CPU: {}\nMemory: {}", cpu_info,memory_info)}#[get("/")]async fn hello() -> impl Responder {    HttpResponse::Ok().body("Hello world!")}#[actix_web::main]async fn main() -> std::io::Result {    HttpServer::new(|| {        App::new()            .service(hello)            .route("/api", web::get().to(sys_info))    })        .bind(("127.0.0.1", 8080))?        .run()        .await}

运行结果如下：  

三、知识点

1、systemstat

This library provides a way to access system information such as CPU load, mounted filesystems, network interfaces, etc.

该库提供了一种访问系统信息的方法，如CPU负载、已安装的文件系统、网络接口等。

systemstat - RustThis library provides a way to access system information such as CPU load, mounted filesystems, network interfaces, etc.https://docs.rs/systemstat/latest/systemstat/index.html

2、Actix 

Actix Web lets you quickly and confidently develop web services in Rust and this guide will get you going in no time.

Actix Web可以让您快速而自信地在Rust中开发Web服务，本指南将很快让您上手。

Getting Started | ActixInstalling Rusthttps://actix.rs/docs/getting-started