抖音下载（自用）

douyin.js

const axios = require('axios');
const errwin = /[\\\\/:*?\"<>|]/g;
const subwin = ``;
const cp = require('child_process');

// 获取作品ID
var GetID = function (dyurl) {
    return new Promise((resolve, reject) => {
        try {
            axios.get(dyurl, {
                headers: {
                    'user-agent': ' Mozilla/5.0 (iPhone; CPU iPhone OS 13_2_3 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/13.0.3 Mobile/15E148 Safari/604.1'
                }
            }).then(function (response) {
                console.log(response.request.res.responseUrl)
                var revideo = /video\/(\d*)/
                var item_ids = revideo.exec(response.request.res.responseUrl)[1]
                // console.log(item_ids)
                resolve(item_ids)
            }).catch(function (error) {
                console.log(error + '  item_ids获取错误')
                next(error)
                reject(error)
                // return 0;
            })
        } catch (error) {
            console.log(error)
        }
    })
}

var GetInfo = function (item_ids) {
    console.log('GetInfo ok')
    return new Promise((resolve, reject) => {
        axios.get(`https://www.iesdouyin.com/web/api/v2/aweme/iteminfo/?item_ids=${item_ids}`, {
                    headers: {
                        'user-agent': ' Mozilla/5.0 (iPhone; CPU iPhone OS 13_2_3 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/13.0.3 Mobile/15E148 Safari/604.1'
                    }
                }
            ).then(function (response) {
                console.log('item_ids ok')
                // console.log("response", response.data)
                let {
                    status_code,
                    item_list
                } = response.data
                if (status_code === 0) {
                    // 无水印视频链接
                    let url = item_list[0].video.play_addr.url_list[0].replace(
                        'playwm',
                        'play'
                    )
                    // 转换成1080p
                    url = url.replace('720p','1080p')
                    console.log('1080p',url)
                    // 视频文案
                    let desc = item_list[0].desc;
                    // 文案过滤非法字符
                    desc.replace(errwin, subwin);

                    console.log('video play url', url)
                    console.log('video desc', desc)

                    var data = ({
                        url: url,
                        desc: desc
                    })
                    resolve(data)
                } else {
                    reject(status_code)
                }
            })
            .catch(function (error) {
                console.log(error)
                res.render('error');
                reject(error)
            })
    })
}

let result= GetID('https://v.douyin.com/rQ6rw8q/').then(item_ids => {
    // console.log(item_ids)
    GetInfo(item_ids).then(data => {
        var filename="/Users/michael/Documents/搬运/"+data.desc+".mp4";
        var uri=data.url;
        var agent="--user-agent 'Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/31.0.1650.63 Safari/537.36'";
        let command = `curl -L -o '${filename}' '${uri}' ${agent}`;
        // console.log(command)
        let result = cp.execSync(command);
        console.log("下载成功");
    });
}).catch((error) =>{
    console.log('22222',error)
    next(error)
});