package com.zy.file;

import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.InputStream;

import net.sf.jmimemagic.Magic;
import net.sf.jmimemagic.MagicException;
import net.sf.jmimemagic.MagicMatch;
import net.sf.jmimemagic.MagicMatchNotFoundException;
import net.sf.jmimemagic.MagicParseException;

public class FileType {
	public static void main(String[] args) throws MagicParseException, MagicMatchNotFoundException, MagicException, IOException {
		  File file=new File("D://a.xls"); 
		  InputStream in = new FileInputStream(file);
		  byte[] by =FileType.tobyte(in);
		  System.out.println(by);
		  if(null!=by){
			  Magic parser = new Magic();     
			  MagicMatch match = parser.getMagicMatch(by, true);

			 System.out.println(match.getMimeType()) ;
		  }
		  
		 
	}
	public static byte[] tobyte(InputStream in) throws IOException{
		ByteArrayOutputStream out = new ByteArrayOutputStream();
		byte[] by = new byte[1024];
		int count = -1;
		while((count=in.read(by, 0, 1024))!=-1)
			out.write(by,0,count);
			by=null;
		
		return out.toByteArray();
		
	}
}