如何读取mp3的信息？

[superliyubo]

如何用JAVA读取 mp3文件里包含的 文件名 这类的信息
谢谢~~~~~~~~~~~

[valen_jia]

import java.io.File;
import java.io.FileInputStream;
import java.io.InputStream;
import java.text.SimpleDateFormat;
import java.util.List;

public class ParseInput {
	public static void main(String[] args){
		File file = new File("E:/KwDownload/song/张韶涵-隐形的翅膀.mp3");	
		System.out.println("文件名："+file.getName());
		System.out.println("文件大小："+getFileSize(file));
		System.out.println("文件绝对路径："+file.getPath());
		System.out.println("是否隐藏："+file.isHidden());
		System.out.println("最后一次修改时间："+new SimpleDateFormat("yyyy-MM-dd").format(file.lastModified()));
	}

	public static String getFileSize(File file) {
		String result = "";
		try {
			Double d = 0d;
			InputStream in = new FileInputStream(file);
			int oneSize = in.available();
			d += oneSize;
			in.close();
			Double dd = Double.parseDouble(d + "") / (1024);
			String size = dd + "";
			String[] str = size.split("\\.");
			// 不到1K
			if (str[0].equals("0")) {
				result = dd + "字节";
			}
			// 1k~1M
			else if (str[0].length() >= 1 && str[0].length() < 4) {
				result = Double.parseDouble(d + "") / (1024) + "00";
				result = result.split("\\.")[0] + "."
						+ result.split("\\.")[1].substring(0, 2) + "Kb";
			}
			// 1M~1G
			else if (str[0].length() >= 4 && str[0].length() < 7) {
				result = Double.parseDouble(d + "") / (1024 * 1024) + "00";
				result = result.split("\\.")[0] + "."
						+ result.split("\\.")[1].substring(0, 2) + "Mb";
			}
			// 1G以上
			else {
				result = Double.parseDouble(d + "") / (1024 * 1024 * 1024)
						+ "00";
				result = result.split("\\.")[0] + "."
						+ result.split("\\.")[1].substring(0, 2) + "G";
			}
			// System.out.println("大小为:" + result);

		} catch (Exception e) {
			e.printStackTrace();
		}
		return result;
	}
}

[j1223jesus]

楼上速度真快。。。

[wanglingzhong]

可以从音乐文件的最后字节中读出！若采用ID3
ID3标签是MP3音乐档案中的歌曲附加讯息，它能够在MP3中附加曲子的演出者、作者以及其它类别资讯，方便众多乐曲的管理

import java.io.*;

public class ReadID3 {
    public static void main(String[] arguments) {
        try {
            File song = new File(arguments[0]);
            FileInputStream file = new FileInputStream(song);
            int size = (int)song.length();
            file.skip(size - 128);
            byte[] last128 = new byte[128];
            file.read(last128);
            String id3 = new String(last128);
            String tag = id3.substring(0, 3);
            if (tag.equals("TAG")) {
                System.out.println("Title: " + id3.substring(3, 32));
                System.out.println("Artist: " + id3.substring(33, 62));
                System.out.println("Album: " + id3.substring(63, 91));
                System.out.println("Year: " + id3.substring(93, 97));
            } else
                System.out.println(arguments[0] + " does not contain"
                     + " ID3 info.");
            file.close();
        } catch (Exception e) {
            System.out.println("Error -- " + e.toString());
        }
    }
}

因为ID3版本较多，这一个程序对某些歌曲不对！仅供参考吧~~

[14test41]

学习中。。。。