下载 Bilibili 音频

biliaudio.rs

#!/usr/bin/env cargo play -q
//# anyhow = "*"
//# reqwest = {version="*", features=["gzip","blocking"]}
//# serde_json = "*"
fn main() -> anyhow::Result<()> {
    let audio_id = "832257";
    let client = reqwest::blocking::Client::new();
    let body = client.get(format!("https://www.bilibili.com/audio/music-service-c/web/song/info?sid={}", audio_id)).send()?.text()?;
    let resp = &serde_json::from_str::<serde_json::Value>(&body)?["data"]["cover"];
    let cover_url = resp.as_str().unwrap();
    let cover = client.get(cover_url).send()?.bytes()?;
    std::fs::write("/tmp/ccc.jpg", cover)?;

    let body = client.get(format!("https://www.bilibili.com/audio/music-service-c/web/url?sid={}", audio_id)).send()?.text()?;
    let resp = &serde_json::from_str::<serde_json::Value>(&body)?["data"]["cdns"][0];
    let file_url = resp.as_str().unwrap();
    let file = client.get(file_url)
        .header("User-Agent", "Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:99.0) Gecko/20100101 Firefox/99.0")
        .header("Referer", "https://www.bilibili.com/")
        .send()?.bytes()?;
    std::fs::write("/tmp/aaa.m4a", file)?;
    Ok(())
}

Rust so far is the best (statically) typed scripting language!!

Reasons:

1. cargo-play has pretty good startup time. 0.3s is acceptable for most user-facing utilities. jvm-based langs are terrible at this.
2. it has very very good ecosystem...
3. editor support!