Java文件分割

 package FileDemo;

 import java.io.File;
 import java.io.FileInputStream;
 import java.io.FileOutputStream;
 import java.io.IOException;

 public class SpliteFilesDemo {

     private static final int size = 1024*1024;

     /**
      * @param args
      * @throws IOException
      */
     public static void main(String[] args) throws IOException {

         File file=new File("D:\\KwDownload\\song\\0.mp3");
         splitFile(file);
     }

     private static void splitFile(File file) throws IOException {//
         //用读取流关联源文件
         FileInputStream fis=new FileInputStream(file);
         //创建一个1M的缓冲区
         byte buf[]=new byte[size];
         //创建目的
         FileOutputStream fos=null;
         File destFile=new File("D:\\destFile");
         if(!destFile.exists()){
             destFile.mkdirs();
         }
         int len=0;
         int count=1;
         while((len=fis.read(buf))!=-1){
             fos=new FileOutputStream(new File(destFile, (count++)+".part"));
             fos.write(buf,0,len);
         }
         fos.close();
         fis.close();
     }

 }