在Rust应用中访问.ini格式的配置文件方式

[dependencies]
ini = "0.17"  # 请检查最新版本号

use ini::Ini;
use std::fs::File;
use std::io::Read;
use std::path::Path;

fn main() {
    // 定义配置文件路径
    let path = Path::new("config.ini");
    let display = path.display();

    // 打开配置文件
    let mut file = match File::open(&path) {
        Err(why) => panic!("couldn't open {}: {}", display, why),
        Ok(file) => file,
    };

    // 读取文件内容
    let mut contents = String::new();
    match file.read_to_string(&mut contents) {
        Err(why) => panic!("couldn't read {}: {}", display, why),
        Ok(_) => println!("File contents: {}", contents),
    };

    // 解析.ini文件
    let ini = Ini::load_from_str(&contents).unwrap_or_else(|err| {
        panic!("Failed to parse config file: {}", err);
    });

    // 访问配置值
    if let Some(section) = ini.section(Some("database")) {
        let db_url = section.get("url").unwrap_or("not_found");
        let db_user = section.get("user").unwrap_or("not_found");
        println!("Database URL: {}", db_url);
        println!("Database User: {}", db_user);
    } else {
        println!("No [database] section found in config file.");
    }
}

[database]
url = "postgresql://user:password@localhost:5432/mydatabase"
user = "admin"

cargo run