开发语言 后端 rust下载文件

背景

最近晚上给娃听故事

这页面不能连续播放,想着下载下来用默认播放器播放好了, 刚好最近在学rust,就用rust实现mp4下载.

动手

整理下载链接

        由于链接可能涉及不必要的纠纷就先不明文列出来了

编码

解析json

use serde::{Deserialize,Serialize};

use serde_json;

#[derive(Debug,Deserialize,Serialize)]

struct Audio {

title:String,

src:String,

}

fn main() {

println!("download mp4!");

let json_urls = r#"[

{"title":"第一辑 吃饭","src":"http://tcv.clewm.net"},

{"title":"第一辑.大声回应","src":"http://tcv.clewm.net"},

{"title":"第一辑.好朋友","src":"http://tcv.clewm.net"},

{"title":"第一辑.拉粑粑","src":"http://tcv.clewm.net"},

{"title":"第一辑.你好","src":"http://tcv.clewm.net"},

{"title":"第一辑.尿床了","src":"http://tcv.clewm.net"},

{"title":"第一辑.刷牙","src":"http://tcv.clewm.net"},

{"title":"第一辑.谁哭了","src":"http://tcv.clewm.net"},

{"title":"第一辑.睡觉","src":"http://tcv.clewm.net"},

{"title":"第一辑.洗澡","src":"http://tcv.clewm.net"},

{"title":"第二辑.对不起","src":"http://tcv.clewm.net"},

{"title":"第二辑.多吃蔬菜","src":"http://tcv.clewm.net"},

{"title":"第二辑.多吃水果","src":"http://tcv.clewm.net"},

{"title":"第二辑.过生日","src":"http://tcv.clewm.net"},

{"title":"第二辑.排好队","src":"http://tcv.clewm.net"},

{"title":"第二辑.散步","src":"http://tcv.clewm.net"},

{"title":"第二辑.收起来","src":"http://tcv.clewm.net"},

{"title":"第二辑.我会穿鞋子","src":"http://tcv.clewm.net"},

{"title":"第二辑.我会穿衣服","src":"http://tcv.clewm.net"},

{"title":"第二辑.有危险","src":"http://tcv.clewm.net"},

{"title":"第三辑.不赖床","src":"http://tcv.clewm.net"},

{"title":"第三辑.插座上的洞洞","src":"http://tcv.clewm.net"},

{"title":"第三辑.地上的东西是糖吗","src":"http://tcv.clewm.net"},

{"title":"第三辑.好烫的水","src":"http://tcv.clewm.net"},

{"title":"第三辑.客人来我家","src":"http://tcv.clewm.net"},

{"title":"第三辑.妈妈不见了","src":"http://tcv.clewm.net"},

{"title":"第三辑.勤洗手","src":"http://tcv.clewm.net"},

{"title":"第三辑.讨厌的桌角","src":"http://tcv.clewm.net"},

{"title":"第三辑.谢谢","src":"http://tcv.clewm.net"},

{"title":"第三辑.站在椅子上","src":"http://tcv.clewm.net"}

]"#;

let audios = serde_json::from_str::>(json_urls).unwrap();

下载文件

use std::fs::File;

use std::path::Path;

use std::io::prelude::*;

use reqwest;

async fn download(audio:Audio)->std::result::Result<(),Box>{

println!("downloading {}",audio.title);

let client = reqwest::Client::new();

let body = client.get(&audio.src).send().await.unwrap().bytes().await.unwrap();

let title = String::from("./")+&audio.title+".mp4";

let path = Path::new(&title);

let mut file = File::create(&path).unwrap();

let content = body.bytes();

let data:std::result::Result,_> = content.collect();

file.write_all(&data.unwrap()).unwrap();

println!("downloaded {}",audio.title);

Ok(())

}

完整代码

use serde::{Deserialize,Serialize};

use serde_json;

use std::fs::File;

use std::path::Path;

use std::io::prelude::*;

use reqwest;

#[derive(Debug,Deserialize,Serialize)]

struct Audio {

title:String,

src:String,

}

async fn download(audio:Audio)->std::result::Result<(),Box>{

println!("downloading {}",audio.title);

let client = reqwest::Client::new();

let body = client.get(&audio.src).send().await.unwrap().bytes().await.unwrap();

let title = String::from("./")+&audio.title+".mp4";

let path = Path::new(&title);

let mut file = File::create(&path).unwrap();

let content = body.bytes();

let data:std::result::Result,_> = content.collect();

file.write_all(&data.unwrap()).unwrap();

println!("downloaded {}",audio.title);

Ok(())

}

#[tokio::main]

async fn main() {

println!("download mp4!");

let json_urls = r#"[

{"title":"第一辑 吃饭","src":"http://tcv.clewm.net"},

{"title":"第一辑.大声回应","src":"http://tcv.clewm.net"},

{"title":"第一辑.好朋友","src":"http://tcv.clewm.net"},

{"title":"第一辑.拉粑粑","src":"http://tcv.clewm.net"},

{"title":"第一辑.你好","src":"http://tcv.clewm.net"},

{"title":"第一辑.尿床了","src":"http://tcv.clewm.net"},

{"title":"第一辑.刷牙","src":"http://tcv.clewm.net"},

{"title":"第一辑.谁哭了","src":"http://tcv.clewm.net"},

{"title":"第一辑.睡觉","src":"http://tcv.clewm.net"},

{"title":"第一辑.洗澡","src":"http://tcv.clewm.net"},

{"title":"第二辑.对不起","src":"http://tcv.clewm.net"},

{"title":"第二辑.多吃蔬菜","src":"http://tcv.clewm.net"},

{"title":"第二辑.多吃水果","src":"http://tcv.clewm.net"},

{"title":"第二辑.过生日","src":"http://tcv.clewm.net"},

{"title":"第二辑.排好队","src":"http://tcv.clewm.net"},

{"title":"第二辑.散步","src":"http://tcv.clewm.net"},

{"title":"第二辑.收起来","src":"http://tcv.clewm.net"},

{"title":"第二辑.我会穿鞋子","src":"http://tcv.clewm.net"},

{"title":"第二辑.我会穿衣服","src":"http://tcv.clewm.net"},

{"title":"第二辑.有危险","src":"http://tcv.clewm.net"},

{"title":"第三辑.不赖床","src":"http://tcv.clewm.net"},

{"title":"第三辑.插座上的洞洞","src":"http://tcv.clewm.net"},

{"title":"第三辑.地上的东西是糖吗","src":"http://tcv.clewm.net"},

{"title":"第三辑.好烫的水","src":"http://tcv.clewm.net"},

{"title":"第三辑.客人来我家","src":"http://tcv.clewm.net"},

{"title":"第三辑.妈妈不见了","src":"http://tcv.clewm.net"},

{"title":"第三辑.勤洗手","src":"http://tcv.clewm.net"},

{"title":"第三辑.讨厌的桌角","src":"http://tcv.clewm.net"},

{"title":"第三辑.谢谢","src":"http://tcv.clewm.net"},

{"title":"第三辑.站在椅子上","src":"http://tcv.clewm.net"}

]"#;

let audios = serde_json::from_str::>(json_urls).unwrap();

for audio in audios {

let _ = download(audio).await;

}

}

结果

推荐链接