codecutils.java

一些公用的Java函数

/*
 * CodecUtils.java
 * 
 * Created on 2007-11-5, 11:04:09
 * 
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */

package com.s7turn.sdk.utils;
import java.io.IOException;
import java.io.InputStream;
import java.io.ByteArrayOutputStream;
import org.apache.commons.codec.binary.Hex;
import org.apache.commons.codec.digest.DigestUtils;
import com.s7turn.logging.Logger;
/**
 *
 * @author Long
 */
public class CodecUtils 
{
    
    public static String md5( byte[] buffer )
    {
        return DigestUtils.md5Hex(buffer);
    }
    
    public static String md5( InputStream input )
    {
        ByteArrayOutputStream baos = new ByteArrayOutputStream();
        byte[] buffer = new byte[10240];
        int readed = 0;
        try{
            do{
                readed = input.read(buffer, 0, 10240);
                if (readed > 0)
                    baos.write(buffer, 0, readed);
            }while( readed > 0 );
        }
        catch (IOException ex)
        {
            Logger.getLogger().debug("Exception %s.\n", ex);
        }
        finally
        {
            try{
                baos.close();
            }catch(Exception ex){}
        }
  
        buffer = baos.toByteArray();
        
        return md5( buffer );
    }


    
    
    
    
}