ファイルカットマージコード

/* 

*/



import java.io.*;
class  SplitFile
{
	public static void main(String[] args) throws IOException
	{
		File file = new File("f:\\1.bmp");


		FileInputStream fis = new FileInputStream(file);

		byte[] buf = new byte[1024*1024];
		
		int count = 1;
		int len = 0;
		

		FileOutputStream fos = null;

		while((len=fis.read(buf))!=-1)
		{
			fos = new FileOutputStream("f:\\splitfile\\"+(count++)+".part");
			fos.write(buf,0,len);
			fos.close();
		}
		String info = file.getName()+">"+(count-1);
		
		fos = new FileOutputStream("f:\\splitfile\\"+(count++)+".partconfig");
		fos.write(info.getBytes());
		fos.close();

		System.out.println(count);
		fis.close();
	}
}

/* 
*/import java.io.*;
import java.util.*;
class  HeBingFile
{
	public static void main(String[] args) throws IOException
	{
		File f = new File("f:\\splitfile");

		File[] files = f.listFiles();

		File config = null;
		for(File file : files)
		{
			if(file.getName().endsWith(".hahaconfig"))
			{
				config = file;
				break;
			}
		}
		
		if(config==null)
		{
			System.out.println(" ");
			return ;
		}
		BufferedReader bufr = new BufferedReader(new FileReader(config));

		String info = bufr.readLine();

		String[] infos = info.split(">");

		String name = infos[0];
		int count = Integer.parseInt(infos[1]);



		ArrayList<FileInputStream> al = new  ArrayList<FileInputStream>();


		for(int x=1; x<=count; x++)
		{
			File ff = new File("f:\\splitfile\\"+x+".haha");
			if(!ff.exists())
			{
				System.out.println(ff.getName()+".. ");
				return;
			}
			al.add(new FileInputStream(ff));
		}
		
		final Iterator<FileInputStream> it = al.iterator();


		Enumeration<FileInputStream> en = new Enumeration<FileInputStream>()
		{
			public boolean hasMoreElements()
			{
				return it.hasNext();
			}
			public FileInputStream nextElement()
			{
				return it.next();
			}
		};

		SequenceInputStream sis = new SequenceInputStream(en);

		
		FileOutputStream fos = new FileOutputStream("F:\\splitfile\\"+name);

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

		fos.close();
		sis.close();

	}
}