QQ音乐爬虫（NodeJs）

一、创建一个文件夹

　　例如我创建在D:codeqq-music

　　在文件目录打开cmd

　　在cmd中执行 npm init 项目初始化

　　然后安装一些工具包： 

　　npm i request -s

　　npm i querystring -s

　　在目录下创建一个Music的文件夹用于存储下载的音乐文件

二、直接上代码　　D:codeqq-musicqqMusic.js

const request = require('request');
const fs = require('fs'); //文件模块
const querystring=require("querystring");

const downMusic = function(UrlJsonObj){
    const baseUrl = "http://124.232.155.157/amobile.music.tc.qq.com/";
    for(var attr in UrlJsonObj){
        const musicJsonObj = UrlJsonObj[attr];
        const songname = musicJsonObj.songname;
        const songUrl = musicJsonObj.songUrl;
        request(baseUrl+songUrl).pipe(fs.createWriteStream('./Music/'+songname+'.m4a'))
    }
};

const makeMusicJsonArray = function(songJsonArray){
    const baseUrl = "https://u.y.qq.com/cgi-bin/musicu.fcg";
    let UrlJsonObj = {};
    songJsonArray.map(function(musicInfo){
        const songname = musicInfo.songname;
        const songmid = musicInfo.songmid;
        const url = baseUrl+"?"+querystring.stringify(musicInfo.params);
        request(url, function (error, response, body) {
            const BodyJson = JSON.parse(body);
            let musicInfo = {
                songname : this.songname
            };
            musicInfo["songUrl"] = BodyJson["req_0"]["data"]["midurlinfo"][0]["purl"];
            UrlJsonObj[this.songmid] = musicInfo;
            if(Object.getOwnPropertyNames(UrlJsonObj).length == songJsonArray.length){
                this.downMusic(UrlJsonObj)
            }
        }.bind({
            songname : songname,
            songmid : songmid,
            downMusic : downMusic
        }));
    });
};

下面标红的是我在这个页面找到的歌曲清单接口

const queryMusicList = function(){
    request('https://c.y.qq.com/v8/fcg-bin/fcg_v8_toplist_cp.fcg?tpl=3&page=detail&date=2018_41&topid=26&type=top&song_begin=0&song_num=300&g_tk=5381&loginUin=0&hostUin=0&format=jsonp&inCharset=utf8&outCharset=utf-8&notice=0&platform=yqq&needNewCode=0', function (error, response, body) {
        if(response.statusCode == 200){
            body = JSON.parse(body);
            const songList = body.songlist;
            let songJsonArray = [];
            songList.map(function(songDetail){
                songDetail = songDetail.data;
                const songJsonObj = {
                    'albumname' : songDetail.albumname,
                    'albummid' : songDetail.albummid,
                    'singer':  songDetail.singer[0]["name"],
                    'songname': songDetail.songname,
                    'songmid': songDetail.songmid,
                    'songtype': songDetail.songtype
                };

                const musicParams  = {
                    "req":{
                        "module":"CDN.SrfCdnDispatchServer",
                        "method":"GetCdnDispatch",
                        "param":{
                            "guid":"1111",
                            "calltype":0,
                            "userip":""
                        }
                    },
                    "req_0":{
                        "module":"vkey.GetVkeyServer",
                        "method":"CgiGetVkey",
                        "param":{
                            "guid":"1111",
                            "songmid":[songDetail.songmid],
                            "songtype":[songDetail.songtype],
                            "uin":"0",
                            "loginflag":1,
                            "platform":"20"
                        }
                    },
                    "comm":{
                        "uin":0,
                        "format":"json",
                        "ct":20,
                        "cv":0
                    }
                };
                var params = {
                    loginUin : 0,
                    hostUin : 0,
                    format : 'jsonp',
                    inCharset: 'utf8',
                    outCharset: 'utf-8',
                    notice: 0,
                    platform: 'yqq',
                    needNewCode: 0,
                    data: encodeURI(JSON.stringify(musicParams))
                };
                songJsonObj["params"] = params
                songJsonArray.push(songJsonObj)
            });
            makeMusicJsonArray(songJsonArray);

        }
    });
};

queryMusicList();

三、运行代码
node qqMusic.js

PS:纯粹是娱乐一下，打发休息时间