MySQL异步客户端库教程

最新推荐文章于 2024-11-15 13:24:59 发布

强和毓Hadley

最新推荐文章于 2024-11-15 13:24:59 发布

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本文链接：https://blog.youkuaiyun.com/gitblog_01112/article/details/141554380

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MySQL异步客户端库教程

mysql_asyncAsyncronous Rust Mysql driver based on Tokio.项目地址:https://gitcode.com/gh_mirrors/my/mysql_async

项目介绍

mysql_async 是一个基于 Tokio 的异步 MySQL 客户端库，专为 Rust 编程语言设计。该库旨在提供高性能和易于使用的异步数据库连接，适用于需要处理大量并发数据库操作的应用程序。

项目快速启动

安装

首先，确保你已经安装了 Rust 编译器和 Cargo 包管理器。然后在你的 Cargo.toml 文件中添加以下依赖项：

[dependencies]
mysql_async = "<desired version>"

示例代码

以下是一个简单的示例，展示如何连接到 MySQL 数据库并执行一些基本操作：

use mysql_async::prelude::*;
use mysql_async::{Opts, Pool};

#[derive(Debug, PartialEq, Eq, Clone)]
struct Payment {
    customer_id: i32,
    amount: i32,
    account_name: Option<String>,
}

#[tokio::main]
async fn main() -> Result<(), mysql_async::Error> {
    let database_url = "mysql://user:password@localhost:3306/database_name";
    let opts = Opts::from_url(database_url)?;
    let pool = Pool::new(opts);

    let mut conn = pool.get_conn().await?;

    // 创建一个临时表
    conn.query_drop(
        r"CREATE TEMPORARY TABLE payment (
            customer_id int not null,
            amount int not null,
            account_name text
        )",
    )
    .await?;

    // 插入数据
    let payments = vec![
        Payment { customer_id: 1, amount: 2, account_name: None },
        Payment { customer_id: 3, amount: 4, account_name: Some("foo".into()) },
        Payment { customer_id: 5, amount: 6, account_name: None },
        Payment { customer_id: 7, amount: 8, account_name: None },
        Payment { customer_id: 9, amount: 10, account_name: Some("bar".into()) },
    ];

    conn.exec_batch(
        r"INSERT INTO payment (customer_id, amount, account_name)
          VALUES (:customer_id, :amount, :account_name)",
        payments.iter().map(|p| params! {
            "customer_id" => p.customer_id,
            "amount" => p.amount,
            "account_name" => &p.account_name,
        }),
    )
    .await?;

    // 查询数据
    let selected_payments: Vec<Payment> = conn.query_map(
        "SELECT customer_id, amount, account_name FROM payment",
        |(customer_id, amount, account_name)| Payment { customer_id, amount, account_name },
    )
    .await?;

    println!("{:?}", selected_payments);

    Ok(())
}