C#网易云音乐中需付费歌曲的下载助手。

网易云音乐要收费了，部分歌曲只能听不能下载，还是很遗憾的。闲来无事，写了个收费歌曲的下载助手。

下载链接：链接：http://pan.baidu.com/s/1ge5stgB 密码：f9qo

使用方法：

1、安装.net framework 4.0 （若没装的话，下载地址:https://www.microsoft.com/zh-cn/download/confirmation.aspx?id=17718）

2、安装网易云音乐客户端

3、打开“下载助手”，设置好下载保存地址，如下图：

4、选中所需下载的音乐，点右键，点复制链接，如下图：

5、下载就开始了。。。。。就这么简单。。。。。

（只要复制歌曲链接，就能自动添加到下载助手里面哟，然后自动下载。）

6、可以一个劲复制很多链接（重复4操作）。

7、退出软件，点“”没用的。。会退到后台。必须在状态栏找到以下图标，点右键，点退出

8、若觉得对您有帮助，可以发个微信红包打赏哦

(微信号：li1239019842)

缺点：

下载的音乐不是高品质的。。。

---------------------------------------------------分割线---------------------------------------------------------

原理：通过网易云音乐客户端复制的音乐链接中获取音乐ID（红色），

“http://music.163.com/#/m/song?id=27804029&userid=98810162”

将歌曲id替换以下链接中“XXXXXX”
http://music.163.com/api/song/detail/?id=XXXXXX&ids=%5BXXXXXX%5D&csrf_token=

网址输入浏览器中返回json语句，其中“mp3Url”即为歌曲链接，如下：
http://m2.music.126.net/MEYfrcH-XivohQ01yOsoCw==/3288639278734103.mp3

这就是音乐的下载地址。。。。

-------------------------------------------------源码--------------------------------------------------------------

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.Threading;
using System.IO;namespace NeteaseCouldMusicDownload
{public partial class Form1 : Form{[System.Runtime.InteropServices.DllImport("user32")]private static extern IntPtr SetClipboardViewer(IntPtr hwnd);[System.Runtime.InteropServices.DllImport("user32")]private static extern IntPtr ChangeClipboardChain(IntPtr hwnd, IntPtr hWndNext);[System.Runtime.InteropServices.DllImport("user32")]private static extern int SendMessage(IntPtr hwnd, int wMsg, IntPtr wParam, IntPtr lParam);const int WM_DRAWCLIPBOARD = 0x308;const int WM_CHANGECBCHAIN = 0x30D;IntPtr NextClipHwnd;private static StreamWriter sw;int id;int finished;Thread t;public Form1(){InitializeComponent();id = 0;}private void btnSelectPath_Click(object sender, EventArgs e){FolderBrowserDialog fbDialog = new FolderBrowserDialog();fbDialog.Description = "请选择文件保存路径";if(fbDialog.ShowDialog() == DialogResult.OK){txtPath.Text = fbDialog.SelectedPath;string iniPathName = Environment.CurrentDirectory + "\\Default.ini";OperateIniFile.WriteIniData("Dictionary", "key", txtPath.Text, iniPathName);}}private void AddDownload(string url){url = TransfromUrl(url);if (string.IsNullOrEmpty(url)){return;}if (url != "error"){Song song = DownloadHelper.GetMusicUrl(DownloadHelper.GetWebContent(url));if (song == null){return;}if (File.Exists(txtPath + "\\" + song.songName + "." + song.extension)){File.Delete(txtPath + "\\" + song.songName + "." + song.extension);}DataGridViewRow dr = new DataGridViewRow();dr.CreateCells(dataGridView1);dr.Cells[0].Value = id + 1;dr.Cells[1].Value = song.songName + "." + song.extension;dr.Cells[2].Value = song.singer;dr.Cells[3].Value = (Convert.ToDouble(song.songSize) / 1024 / 1024).ToString("0.00M");dr.Cells[4].Value = "0%";dr.Cells[5].Value = song.songUrl;dataGridView1.Rows.Add(dr);txtUrl.Text = "";id++;t.Resume(); //恢复线程}}private void btnDownload_Click(object sender, EventArgs e){string url = TransfromUrl(txtUrl.Text);if (string.IsNullOrEmpty(url)){MessageBox.Show("请输入歌曲链接！");return;}if (url != "error"){Song song = DownloadHelper.GetMusicUrl(DownloadHelper.GetWebContent(url));if (song == null){MessageBox.Show("找不到歌曲！");return;}if (File.Exists(txtPath + "\\" + song.songName + "." + song.extension)){File.Delete(txtPath + "\\" + song.songName + "." + song.extension);}DataGridViewRow dr = new DataGridViewRow();dr.CreateCells(dataGridView1);dr.Cells[0].Value = id+1;dr.Cells[1].Value = song.songName+"."+song.extension;dr.Cells[2].Value = song.singer;dr.Cells[3].Value = (Convert.ToDouble(song.songSize)/1024/1024).ToString("0.00M");dr.Cells[4].Value = "0%";dr.Cells[5].Value = song.songUrl;dataGridView1.Rows.Add(dr);txtUrl.Text = "";Thread.Sleep(100);id++;t.Resume(); //恢复线程}else{MessageBox.Show("歌曲链接错误！");}}private string TransfromUrl(string url){if (string.IsNullOrEmpty(url)){return "";}string[] tmp = url.Split(new char[]{'?','=','&'});if (tmp.Length>1 && tmp[1] == "id"){return "http://music.163.com/api/song/detail/?id=" + tmp[2] + "&ids=%5B" + tmp[2] + "%5D&csrf_token=";}elsereturn "error";}private void Form1_Load(object sender, EventArgs e){NextClipHwnd = SetClipboardViewer(this.Handle);string iniPathName = Environment.CurrentDirectory + "\\Default.ini";OperateIniFile.Checkini(iniPathName);string songPath = OperateIniFile.ReadIniData("Dictionary", "key", "Empty", iniPathName);if (System.IO.Directory.Exists(songPath)){txtPath.Text = songPath;}else{txtPath.Text = Environment.CurrentDirectory;OperateIniFile.WriteIniData("Dictionary", "key", txtPath.Text, iniPathName);}t = new Thread(new ThreadStart(DownloadProc));id = 0;        //添加下载的数目finished = 0;  //已下载数t.Start();     //启动下载线程}private void DownloadProc(){while (true){if (finished < id){DownloadHelper.DownloadFile(ref dataGridView1, txtPath.Text, finished, null);finished++;}else{Thread.Sleep(1000);t.Suspend(); //挂起线程}}}protected override void WndProc(ref System.Windows.Forms.Message m){switch (m.Msg){case WM_DRAWCLIPBOARD://将WM_DRAWCLIPBOARD消息传递到下一个观察链中的窗口SendMessage(NextClipHwnd, m.Msg, m.WParam, m.LParam);IDataObject iData = Clipboard.GetDataObject();//检测文本if (iData.GetDataPresent(DataFormats.Text) | iData.GetDataPresent(DataFormats.OemText)){if (iData != null && System.IO.Directory.Exists(txtPath.Text)){ string url = (String)iData.GetData(DataFormats.Text);AddDownload(url);}}break;default:base.WndProc(ref m);break;}}private void ToolMenuShow_Click(object sender, EventArgs e){this.Show();this.WindowState = FormWindowState.Normal;this.Activate();   //激活窗体给予焦点}private void ToolMenuClose_Click(object sender, EventArgs e){DialogResult dr = MessageBox.Show("确定要退出程序？", "安全提示", MessageBoxButtons.YesNo, MessageBoxIcon.Warning);if (dr == DialogResult.Yes){notifyIcon1.Visible = false;this.Close();this.Dispose();t.Resume();t.Abort();Application.Exit();}}private void notifyIcon1_MouseClick(object sender, MouseEventArgs e){if (e.Button == MouseButtons.Left){this.Visible = true;this.WindowState = FormWindowState.Normal;this.notifyIcon1.Visible = true;}}private void Form1_FormClosing(object sender, FormClosingEventArgs e){if (e.CloseReason == CloseReason.UserClosing){e.Cancel = true;  //取消关闭操作，表现为不关闭窗体this.Hide();     //隐藏窗体}}}
}

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Net;
using System.IO;
using System.Windows.Forms;
using Newtonsoft.Json;
using Newtonsoft.Json.Linq;
using System.Runtime.InteropServices;namespace NeteaseCouldMusicDownload
{class Song{public string songUrl { get; set; }public string songName { get; set; }public string singer { get; set; }public string songSize { get; set; }public string extension { get; set; }}class DownloadHelper{/// <summary>/// 获得Json字符串/// </summary>/// <param name="Url">网址</param>/// <returns></returns>public static string GetWebContent(string Url){string strResult = "";try{HttpWebRequest request = (HttpWebRequest)WebRequest.Create(Url);//声明一个HttpWebRequest请求request.Timeout = 30000;//设置连接超时时间request.Headers.Set("Pragma", "no-cache");HttpWebResponse response = (HttpWebResponse)request.GetResponse();Stream streamReceive = response.GetResponseStream();StreamReader streamReader = new StreamReader(streamReceive, Encoding.GetEncoding("UTF-8"));strResult = streamReader.ReadToEnd();}catch(Exception e){MessageBox.Show(e.ToString()+":"+e.Message);}return strResult;}/// <summary>/// 解析Json语句，得到音乐信息/// </summary>/// <param name="jsonStr"></param>/// <returns></returns>public static Song GetMusicUrl(string jsonStr){Song song = new Song();JObject jsonobj = JObject.Parse(jsonStr);JArray jar = JArray.Parse(jsonobj["songs"].ToString());if (jar.Count == 0)return null;JObject songobj = JObject.Parse(jar[0].ToString());song.songUrl =  songobj["mp3Url"].ToString();song.songName = songobj["name"].ToString();song.singer = JObject.Parse(JArray.Parse(songobj["artists"].ToString())[0].ToString())["name"].ToString();song.songSize = JObject.Parse(songobj["bMusic"].ToString())["size"].ToString();song.extension = JObject.Parse(songobj["bMusic"].ToString())["extension"].ToString();return song;}/// <summary>/// 通过url下载文件/// </summary>/// <param name="URL">网址链接</param>/// <param name="filename">保存路径</param>/// <param name="prog"></param>/// <param name="label1"></param>public static void DownloadFile(ref DataGridView grid,string path,int row,ProgressBar prog){string URL = grid.Rows[row].Cells[5].Value.ToString();string filename = path + "\\" + grid.Rows[row].Cells[1].Value.ToString();float percent = 0;try{System.Net.HttpWebRequest Myrq = (System.Net.HttpWebRequest)System.Net.HttpWebRequest.Create(URL);System.Net.HttpWebResponse myrp = (System.Net.HttpWebResponse)Myrq.GetResponse();long totalBytes = myrp.ContentLength;if (prog != null){prog.Maximum = (int)totalBytes;}System.IO.Stream st = myrp.GetResponseStream();System.IO.Stream so = new System.IO.FileStream(filename, System.IO.FileMode.Create);long totalDownloadedByte = 0;byte[] by = new byte[102400];int osize = st.Read(by, 0, (int)by.Length);while (osize > 0){totalDownloadedByte = osize + totalDownloadedByte;System.Windows.Forms.Application.DoEvents();so.Write(by, 0, osize);if (prog != null){prog.Value = (int)totalDownloadedByte;}osize = st.Read(by, 0, (int)by.Length);percent = (float)totalDownloadedByte / (float)totalBytes * 100;grid.Rows[row].Cells[4].Value = percent.ToString("0.0") + "%";System.Windows.Forms.Application.DoEvents(); //必须加注这句代码，否则label1将因为循环执行太快而来不及显示信息}so.Close();st.Close();}catch (System.Exception){throw;}}}public class OperateIniFile{#region API函数声明[DllImport("kernel32")]//返回0表示失败，非0为成功private static extern long WritePrivateProfileString(string section, string key,string val, string filePath);[DllImport("kernel32")]//返回取得字符串缓冲区的长度private static extern long GetPrivateProfileString(string section, string key,string def, StringBuilder retVal, int size, string filePath);#endregion#region 读Ini文件public static string ReadIniData(string Section, string Key, string NoText, string iniFilePath){if (File.Exists(iniFilePath)){StringBuilder temp = new StringBuilder(1024);GetPrivateProfileString(Section, Key, NoText, temp, 1024, iniFilePath);return temp.ToString();}else{return String.Empty;}}#endregion#region 写Ini文件public static bool WriteIniData(string Section, string Key, string Value, string iniFilePath){if (File.Exists(iniFilePath)){long OpStation = WritePrivateProfileString(Section, Key, Value, iniFilePath);if (OpStation == 0){return false;}else{return true;}}else{return false;}}#endregionpublic static bool Checkini(string pathName){if (!File.Exists(pathName)){File.Create(pathName).Close();}return true;}}
}

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C#网易云音乐中需付费歌曲的下载助手。

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