java中使用IO将文件切割后保存（FileInputStream、FileOutputStream）

直接代码：

public class Demo {public static void main(String[] args) throws IOException {split(new File("c:\\a.mp3"), 10, new File("c:\\"));System.out.println("切割完毕");LinkedHashSet<InputStream> hs = new LinkedHashSet<InputStream>();hs.add(new FileInputStream(new File("c:\\part.1.mp3")));hs.add(new FileInputStream(new File("c:\\part.2.mp3")));hs.add(new FileInputStream(new File("c:\\part.3.mp3")));hs.add(new FileInputStream(new File("c:\\part.4.mp3")));merage(hs, new File("c:\\merage.mp3"));System.out.println("合并完毕");}private static void merage(LinkedHashSet<InputStream> hs, File dest)throws IOException {final Iterator<InputStream> it = hs.iterator();FileOutputStream fos = new FileOutputStream(dest);SequenceInputStream seq = new SequenceInputStream(new Enumeration<InputStream>() {@Overridepublic boolean hasMoreElements() {return it.hasNext();}@Overridepublic InputStream nextElement() {return it.next();}});byte[] byt = new byte[1024 * 1024];int len = 0;while ((len = seq.read(byt)) != -1) {fos.write(byt, 0, len);}seq.close();fos.close();}// 1. 切割文件/* * 切割文件,切割份数, 切割后保存路径 */private static void split(File src, int count, File dir) throws IOException {FileInputStream fis = new FileInputStream(src);FileOutputStream fos = null;byte[] byt = new byte[1024 * 1024];int len = 0;for (int i = 1; i <= count; i++) {len = fis.read(byt);if (len != -1) {fos = new FileOutputStream(dir + "part." + i + ".mp3");fos.write(byt, 0, len);}// fos.close();}fis.close();}}