MP3切割合并

package sequenceinputstream;


import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.SequenceInputStream;
import java.util.Enumeration;
import java.util.Vector;
//1m的字节数组 读取四次
public class Demo2 {
public static void main(String[] args) throws IOException {
// mp3Split();
mp3Merge();
}
//切割
public static void mp3Split() throws IOException{
File file=new File("F:\\Sultans.mp3");
File dir=new File("F:\\music");


FileInputStream fileInputStream=new FileInputStream(file);


int len=0;
byte []buf=new byte[1024*1024];
for(int i=0;(len=fileInputStream.read(buf))!=-1;i++){
FileOutputStream fileOutputStream=new FileOutputStream(new File(dir,"Part"+i+".mp3"));
fileOutputStream.write(buf, 0, len);
fileOutputStream.close();//立即关
}
fileInputStream.close();

}
public static void mp3Merge() throws IOException{
File dir=new File("F:\\music");
//找到文件
Vector <FileInputStream>vector=new Vector<FileInputStream>();

File[] files=dir.listFiles();
//把传输通道加入vector
for(File file:files){//增强for遍历数组
if(file.getName().endsWith(".mp3")){
vector.add(new FileInputStream(file));
}
}
//通过vector获取迭代器
Enumeration<FileInputStream> e=vector.elements();
SequenceInputStream inputStream=new SequenceInputStream(e);
FileOutputStream fileOutputStream=new FileOutputStream("F:\\total.mp3");//文件夹注意了

byte[]buf=new byte[1024];
int len=0;
while((len=inputStream.read(buf))!=-1){
fileOutputStream.write(buf, 0, len);
}
fileOutputStream.close();
inputStream.close();

}
}