Rust语言Actix-web框架连接Redis数据库

时间：2022-01-16 05:30:33

Rust语言Actix-web框架连接Redis数据库

actix-web2.0终于发布了，不再是测试版本，基于actor系统再加上异步支持，使得actix-web成为了目前响应速度最快的服务器框架，本来计划使用deadpool-redis来写这篇博客，更新了一下actix-web的官方例子，发现actix团队新增加了一个actix-redis库，暂且尝鲜。

准备工作

框架 描述 版本号
actix-web rust 基于actor的异步网络库 2.0
actix-rt actix运行时 1.0
redis-async redis异步连接库,通过Tokio框架和Rustfuture语法编写 0.6.1
actix-redis redis连接管理工具 0.8.0
actix actix核心库 0.9.0

Cargo.toml

[package]

name = "cloud_test"

version = "0.1.0"

authors = ["yuxq"]

edition = "2018"

# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html

[dependencies]

actix = "0.9.0"

actix-web = "2.0"

actix-rt = "1.0"

actix-redis = "0.8.0"

redis-async = "0.6.1"

## 连接Redis

导入需要的包

#[macro_use]

extern crate redis_async;

//use serde::Deserialize;

use actix::prelude::*;

use actix_redis::{Command, RedisActor, Error};

use actix_web::{middleware, web, App, Error as AWError, HttpResponse, HttpServer, Responder};

use redis_async::resp::RespValue;

准备连接

        let redis_addr = RedisActor::start("localhost:6379");

绑定到actix-web中

    HttpServer::new(|| {

        let redis_addr = RedisActor::start("localhost:6379");

        App::new().data(redis_addr)

            .route("/set", web::get().to(set))

            .route("/get", web::get().to(get))

//            .route("/again", web::get().to(index2))

    })

        .bind("127.0.0.1:8088")?

        .run()

        .await

准备两个测试接口，一个设置redis值，一个获取Redis值

async fn set(redis: web::Data<Addr<RedisActor>>) -> Result<HttpResponse, AWError> {

//    let result:Result<RespValue,Error> = redis.send(Command(resp_array!["SET","myname","myvalue"])).await?;

    let result=redis.send(Command(resp_array!["set","name","myvalue"])).await?;

    match result {

        Ok(RespValue::SimpleString(s)) if s == "OK" => {

            Ok(HttpResponse::Ok().body("Set values success!"))

        }

        _ => {

            println!("---->{:?}", result);

            Ok(HttpResponse::InternalServerError().finish())

        }

    }

}

async fn get(redis:web::Data<Addr<RedisActor>>)-> Result<HttpResponse, AWError> {

    let result=redis.send(Command(resp_array!["get","name"])).await?;

    match result{

        Ok(RespValue::BulkString(s)) =>{

            Ok(HttpResponse::Ok().body(s))

        }

        _ => {

            println!("---->{:?}", result);

            Ok(HttpResponse::InternalServerError().finish())

        }

    }

}

访问 localhost:8088/set

之后在访问 localhost:8088/get

由于rust是强类型，所以需要注意返回值类型，设置时返回的类型是SimpleString,获取时返回的是BulkString,关注一下失败的log，会显示返回的类型。

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