1 package test;
2
3 import java.io.*;
4 import java.util.*;
5
6 public class Test6
7 {
8 public static void main(String[] args) throws Exception
9 {
10 String s = "D:/out.mp3"; // 输出目录 & 文件名
11 List<String> list = new ArrayList<String>();
12 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.
13 recursion(dir.listFiles(), list); // 递归函数
14 String[] ss = new String[list.size()];
15 for (int i = 0; i < ss.length; i++)
16 {
17 ss[i] = list.get(i);
18 }
19 System.out.println();
20 combine(s, ss);
21 }
22 public static void recursion(File[] fs, List<String> list) // 递归得所有子目录的.mp3文件.
23 {
24 for (File f : fs)
25 {
26 if (f.isDirectory())
27 {
28 recursion(f.listFiles(), list);
29 }
30 else
31 {
32 if (f.getName().endsWith(".mp3"))
33 {
34 list.add(f.getAbsolutePath());
35 }
36 }
37 }
38 }
39 private static boolean combine(String outFile, String[] inFiles) throws Exception
40 {
41 File out = new File(outFile);
42 File[] files = new File[inFiles.length];
43 for (int i = 0; i < files.length; i++)
44 {
45 files[i] = new File(inFiles[i]);
46 }
47 FileInputStream fis = null;
48 FileOutputStream fos = new FileOutputStream(outFile, true); // 合并其实就是文件的续写,写成true
49 for (int i = 0; i < files.length; i++)
50 {
51 fis = new FileInputStream(files[i]);
52 int len = 0;
53 for (byte[] buf = new byte[1024 * 1024]; (len = fis.read(buf)) != -1;)
54 {
55 fos.write(buf, 0, len);
56 }
57 }
58 fis.close();
59 fos.close();
60 return true;
61 }
62 }
