网易云音乐PC缓存转换mp3

网易云音乐PC缓存转换mp3

1. 网易云音乐PC版缓存位置及编码方式

缓存文件位置:C:\Users\当前用户名\AppData\Local\Netease\CloudMusic\Cache\Cache\

缓存文件格式:*.uc

参考资料可知,缓存文件与原始mp3文件的大小相同,且缓存文件中大量存在字符“A3”,故推测缓存文件的编码方式为将原始mp3与0xa3异或得到

010Editor

2. 使用代码实现文件转换

java版

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public class UI {
private JFrame frame = new JFrame("转换器");
private JPanel panel = new JPanel();
private JLabel label1 = new JLabel("输入路径:");
private JLabel label2 = new JLabel("输出路径:");
private JLabel state = new JLabel();
private JTextField inputPath = new JTextField();
private JTextField outputPath = new JTextField();
private JButton convert = new JButton("转换");
private JButton cancel = new JButton("取消");
private JButton chooseInputPath = new JButton("...");
private JButton chooseOutputPath = new JButton("...");

public UI(){
frame.setSize(500, 200);
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setLocationRelativeTo(null);

label1.setBounds(10, 10, 80, 25);
label2.setBounds(10, 40, 80, 25);
inputPath.setBounds(90, 10, 350, 25);
outputPath.setBounds(90, 40, 350, 25);
chooseInputPath.setBounds(450, 10, 30, 25);
chooseOutputPath.setBounds(450, 40, 30, 25);
state.setBounds(10, 70, 200, 30);
state.setFont(new Font("微软雅黑", Font.PLAIN, 13));
state.setForeground(Color.PINK);

convert.setBounds(10, 110, 100, 25);
cancel.setBounds(300, 110, 100, 25);

chooseInputPath.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
JFileChooser fileChooser = new JFileChooser();
fileChooser.setCurrentDirectory(new File("."));
fileChooser.setFileSelectionMode(JFileChooser.FILES_ONLY);
fileChooser.setFileFilter(new FileNameExtensionFilter("*.uc", "uc"));
int result = fileChooser.showOpenDialog(frame);
if(result == JFileChooser.APPROVE_OPTION){
File file = fileChooser.getSelectedFile();
String str = file.getAbsolutePath();
inputPath.setText(str);
str = str.substring(0, str.length()-3);
outputPath.setText(str + ".mp4");
}
}
});
cancel.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
System.exit(0);
}
});
convert.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
state.setText("正在转换,请稍后......");
ucConvert(inputPath.getText(), outputPath.getText());
state.setText("转换完成!");
}
});

panel.setLayout(null);
panel.add(label1);
panel.add(label2);
panel.add(inputPath);
panel.add(outputPath);
panel.add(chooseInputPath);
panel.add(chooseOutputPath);
panel.add(convert);
panel.add(cancel);
panel.add(state);

frame.add(panel);
frame.setVisible(true);
}
public void ucConvert(String inputPath, String outputPath){
try{
File inFile = new File(inputPath);
File outFile = new File(outputPath);

DataInputStream dis = new DataInputStream( new FileInputStream(inFile));
DataOutputStream dos = new DataOutputStream( new FileOutputStream(outFile));
byte[] by = new byte[1000];
int len;
while((len=dis.read(by))!=-1){
System.out.println(len);
for(int i=0;i<len;i++){
by[i]^=0xa3;
}
dos.write(by,0,len);
}
dis.close();
dos.close();
}catch(IOException ioe){
System.err.println(ioe);
}
}

public static void main(String[] args){
new UI();
}
}

由于带有GUI界面,代码较长,核心代码仅为ucConvert()函数部分。(转载)

C#版

Form1.Designer.cs

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namespace CloudMusicDecode
{
partial class Form1
{
/// <summary>
/// 必需的设计器变量。
/// </summary>
private System.ComponentModel.IContainer components = null;

/// <summary>
/// 清理所有正在使用的资源。
/// </summary>
/// <param name="disposing">如果应释放托管资源,为 true;否则为 false。</param>
protected override void Dispose(bool disposing)
{
if (disposing && (components != null))
{
components.Dispose();
}
base.Dispose(disposing);
}

#region Windows 窗体设计器生成的代码

/// <summary>
/// 设计器支持所需的方法 - 不要修改
/// 使用代码编辑器修改此方法的内容。
/// </summary>
private void InitializeComponent()
{
this.groupBox1 = new System.Windows.Forms.GroupBox();
this.chooseInputPath = new System.Windows.Forms.Button();
this.inputPath = new System.Windows.Forms.TextBox();
this.inputPathLabel = new System.Windows.Forms.Label();
this.groupBox2 = new System.Windows.Forms.GroupBox();
this.chooseOutPath = new System.Windows.Forms.Button();
this.checkBox1 = new System.Windows.Forms.CheckBox();
this.outPath = new System.Windows.Forms.TextBox();
this.outPathLabel = new System.Windows.Forms.Label();
this.startButton = new System.Windows.Forms.Button();
this.closeButton = new System.Windows.Forms.Button();
this.progressBar1 = new System.Windows.Forms.ProgressBar();
this.groupBox1.SuspendLayout();
this.groupBox2.SuspendLayout();
this.SuspendLayout();
//
// groupBox1
//
this.groupBox1.Controls.Add(this.chooseInputPath);
this.groupBox1.Controls.Add(this.inputPath);
this.groupBox1.Controls.Add(this.inputPathLabel);
this.groupBox1.Font = new System.Drawing.Font("微软雅黑", 9F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((byte)(134)));
this.groupBox1.Location = new System.Drawing.Point(12, 12);
this.groupBox1.Name = "groupBox1";
this.groupBox1.Size = new System.Drawing.Size(758, 100);
this.groupBox1.TabIndex = 0;
this.groupBox1.TabStop = false;
this.groupBox1.Text = "输入";
//
// chooseInputPath
//
this.chooseInputPath.Location = new System.Drawing.Point(709, 41);
this.chooseInputPath.Name = "chooseInputPath";
this.chooseInputPath.Size = new System.Drawing.Size(30, 27);
this.chooseInputPath.TabIndex = 2;
this.chooseInputPath.Text = "...";
this.chooseInputPath.UseVisualStyleBackColor = true;
this.chooseInputPath.Click += new System.EventHandler(this.chooseInputPath_Click);
//
// inputPath
//
this.inputPath.Location = new System.Drawing.Point(82, 41);
this.inputPath.Name = "inputPath";
this.inputPath.Size = new System.Drawing.Size(620, 27);
this.inputPath.TabIndex = 1;
//
// inputPathLabel
//
this.inputPathLabel.AutoSize = true;
this.inputPathLabel.Location = new System.Drawing.Point(6, 47);
this.inputPathLabel.Name = "inputPathLabel";
this.inputPathLabel.Size = new System.Drawing.Size(69, 20);
this.inputPathLabel.TabIndex = 0;
this.inputPathLabel.Text = "文件路径";
//
// groupBox2
//
this.groupBox2.Controls.Add(this.chooseOutPath);
this.groupBox2.Controls.Add(this.checkBox1);
this.groupBox2.Controls.Add(this.outPath);
this.groupBox2.Controls.Add(this.outPathLabel);
this.groupBox2.Font = new System.Drawing.Font("微软雅黑", 9F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((byte)(134)));
this.groupBox2.Location = new System.Drawing.Point(12, 118);
this.groupBox2.Name = "groupBox2";
this.groupBox2.Size = new System.Drawing.Size(758, 125);
this.groupBox2.TabIndex = 1;
this.groupBox2.TabStop = false;
this.groupBox2.Text = "输出";
//
// chooseOutPath
//
this.chooseOutPath.Location = new System.Drawing.Point(709, 44);
this.chooseOutPath.Name = "chooseOutPath";
this.chooseOutPath.Size = new System.Drawing.Size(30, 27);
this.chooseOutPath.TabIndex = 3;
this.chooseOutPath.Text = "...";
this.chooseOutPath.UseVisualStyleBackColor = true;
this.chooseOutPath.Click += new System.EventHandler(this.chooseOutPath_Click);
//
// checkBox1
//
this.checkBox1.AutoSize = true;
this.checkBox1.Location = new System.Drawing.Point(82, 88);
this.checkBox1.Name = "checkBox1";
this.checkBox1.Size = new System.Drawing.Size(274, 24);
this.checkBox1.TabIndex = 3;
this.checkBox1.Text = "在缓存文件目录下创建同名mp4文件";
this.checkBox1.UseVisualStyleBackColor = true;
this.checkBox1.CheckedChanged += new System.EventHandler(this.checkBox1_CheckedChanged);
//
// outPath
//
this.outPath.Location = new System.Drawing.Point(82, 44);
this.outPath.Name = "outPath";
this.outPath.Size = new System.Drawing.Size(620, 27);
this.outPath.TabIndex = 2;
//
// outPathLabel
//
this.outPathLabel.AutoSize = true;
this.outPathLabel.Location = new System.Drawing.Point(6, 47);
this.outPathLabel.Name = "outPathLabel";
this.outPathLabel.Size = new System.Drawing.Size(69, 20);
this.outPathLabel.TabIndex = 1;
this.outPathLabel.Text = "输出路径";
//
// startButton
//
this.startButton.Font = new System.Drawing.Font("微软雅黑", 9F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((byte)(134)));
this.startButton.Location = new System.Drawing.Point(12, 249);
this.startButton.Name = "startButton";
this.startButton.Size = new System.Drawing.Size(90, 30);
this.startButton.TabIndex = 2;
this.startButton.Text = "开始转换";
this.startButton.UseVisualStyleBackColor = true;
this.startButton.Click += new System.EventHandler(this.startButton_Click);
//
// closeButton
//
this.closeButton.Font = new System.Drawing.Font("微软雅黑", 9F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((byte)(134)));
this.closeButton.Location = new System.Drawing.Point(680, 249);
this.closeButton.Name = "closeButton";
this.closeButton.Size = new System.Drawing.Size(90, 30);
this.closeButton.TabIndex = 3;
this.closeButton.Text = "退出";
this.closeButton.UseVisualStyleBackColor = true;
this.closeButton.Click += new System.EventHandler(this.closeButton_Click);
//
// progressBar1
//
this.progressBar1.Location = new System.Drawing.Point(109, 249);
this.progressBar1.Name = "progressBar1";
this.progressBar1.Size = new System.Drawing.Size(565, 29);
this.progressBar1.TabIndex = 4;
//
// Form1
//
this.AutoScaleDimensions = new System.Drawing.SizeF(8F, 15F);
this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
this.BackColor = System.Drawing.SystemColors.Control;
this.ClientSize = new System.Drawing.Size(782, 303);
this.Controls.Add(this.progressBar1);
this.Controls.Add(this.closeButton);
this.Controls.Add(this.startButton);
this.Controls.Add(this.groupBox2);
this.Controls.Add(this.groupBox1);
this.Name = "Form1";
this.Text = "网易云缓存转换";
this.groupBox1.ResumeLayout(false);
this.groupBox1.PerformLayout();
this.groupBox2.ResumeLayout(false);
this.groupBox2.PerformLayout();
this.ResumeLayout(false);

}

#endregion

private System.Windows.Forms.GroupBox groupBox1;
private System.Windows.Forms.Button chooseInputPath;
private System.Windows.Forms.TextBox inputPath;
private System.Windows.Forms.Label inputPathLabel;
private System.Windows.Forms.GroupBox groupBox2;
private System.Windows.Forms.Button chooseOutPath;
private System.Windows.Forms.CheckBox checkBox1;
private System.Windows.Forms.TextBox outPath;
private System.Windows.Forms.Label outPathLabel;
private System.Windows.Forms.Button startButton;
private System.Windows.Forms.Button closeButton;
private System.Windows.Forms.ProgressBar progressBar1;
}
}


Form1.cs

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using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.IO;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;

namespace CloudMusicDecode
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}

private void chooseInputPath_Click(object sender, EventArgs e)
{
OpenFileDialog fileDialog = new OpenFileDialog();
fileDialog.Multiselect = false;
fileDialog.Title = "选择文件";
fileDialog.Filter = "uc缓存文件(*.uc)|*.uc";
if(fileDialog.ShowDialog() == DialogResult.OK)
{
inputPath.Text = fileDialog.FileName;
}
}

private void closeButton_Click(object sender, EventArgs e)
{
System.Environment.Exit(0);
}

private void chooseOutPath_Click(object sender, EventArgs e)
{
SaveFileDialog fileDialog = new SaveFileDialog();
fileDialog.Title = "选择保存路径";
fileDialog.Filter = "音频文件(*.mp4)|*.mp4";
if(fileDialog.ShowDialog() == DialogResult.OK)
{
outPath.Text = fileDialog.FileName;
}

}

private void checkBox1_CheckedChanged(object sender, EventArgs e)
{
if(checkBox1.Checked == true)
{
outPath.Enabled = false;
if(inputPath.Text != "")
{
int length = inputPath.Text.Length;
string str = inputPath.Text.Substring(0, length-3);
outPath.Text = str + ".mp4";
}
}
else
{
outPath.Enabled = true;
}
}

private void startButton_Click(object sender, EventArgs e)
{


if (inputPath.Text == "" || outPath.Text == "")
{
MessageBox.Show("请选择正确的文件路径!", "错误", MessageBoxButtons.OK);
}
else
{
FileStream inputFile = new FileStream(inputPath.Text, FileMode.Open);
FileStream outputFile = new FileStream(outPath.Text, FileMode.Create, FileAccess.Write);
byte[] buf = new byte[1024];

progressBar1.Visible = true;
progressBar1.Minimum = 1;
progressBar1.Maximum = (int)new FileInfo(inputPath.Text).Length;
progressBar1.Step = 1024;

while (true)
{
int len = inputFile.Read(buf, 0, buf.Length);
if(len > 0)
{
for (int i = 0; i < len; i++)
{
buf[i] ^= 0xa3;
}
outputFile.Write(buf, 0, len);
}
else
{
break;
}
startProgress();
}
outputFile.Close();
inputFile.Close();
}
}

private void startProgress()
{
progressBar1.PerformStep();
}
}
}

效果展示:

CloudMusicDecode

下载地址:https://pan.baidu.com/s/1DLTKRo2yE95IpqzviZdMVQ

提取码:2btc

3. 其他

???

经过努力找到这样一个在线解析网址:

http://tool.liumingye.cn/music/?page=homePage

支持音乐链接

支持VIP歌曲无损格式下载

草…

一点疑惑:使用whois查询可知该站部署于阿里云服务器,所以为什么作者不怕律师函警告呢?

#

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