java实现mp3合并的方法

本文实例讲述了java实现mp3合并的方法。分享给大家供大家参考。具体实现方法如下：

package test;

import java.io.*;
import java.util.*;

public class test6
{
    public static void main(string[] args) throws exception
    {
        string s = "d:/out.mp3"; // 输出目录 & 文件名
        list<string> list = new arraylist<string>();
        file dir = new file("d:/aaa"); // 要遍历的目录, 用递归拿文件,文件太多就完蛋.
        recursion(dir.listfiles(), list); // 递归函数
        string[] ss = new string[list.size()];
        for (int i = 0; i < ss.length; i++)
        {
            ss[i] = list.get(i);
        }
        system.out.println();
        combine(s, ss);
    }
    public static void recursion(file[] fs, list<string> list) // 递归得所有子目录的.mp3文件.
    {
        for (file f : fs)
        {
            if (f.isdirectory())
            {
                recursion(f.listfiles(), list);
            }
            else
            {
                if (f.getname().endswith(".mp3"))
                {
                    list.add(f.getabsolutepath());
                }
            }
        }
    }
    private static boolean combine(string outfile, string[] infiles) throws exception
    {
        file out = new file(outfile);
        file[] files = new file[infiles.length];
        for (int i = 0; i < files.length; i++)
        {
            files[i] = new file(infiles[i]);
        }
        fileinputstream fis = null;
        fileoutputstream fos = new fileoutputstream(outfile, true); // 合并其实就是文件的续写,写成true
        for (int i = 0; i < files.length; i++)
        {
            fis = new fileinputstream(files[i]);
            int len = 0;
            for (byte[] buf = new byte[1024 * 1024]; (len = fis.read(buf)) != -1;)
            {
                fos.write(buf, 0, len);
            }
        }
        fis.close();
        fos.close();
        return true;
    }
}

希望本文所述对大家的java程序设计有所帮助。