/*
* Copyright (C) 2014 hu
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
package cn.edu.hfut.dmic.webcollector.util;
import org.mozilla.universalchardet.UniversalDetector;
/**
* 字符集自动检测
* @author hu
*/
public class CharsetDetector {
/**
* 根据字节数组，猜测可能的字符集，如果检测失败，返回utf-8
* @param bytes 待检测的字节数组
* @return 可能的字符集，如果检测失败，返回utf-8
*/
public static String guessEncoding(byte[] bytes) {
String DEFAULT_ENCODING = "UTF-8";
UniversalDetector detector = new UniversalDetector(null);
detector.handleData(bytes, 0, bytes.length);
detector.dataEnd();
String encoding = detector.getDetectedCharset();
detector.reset();
if (encoding == null) {
encoding = DEFAULT_ENCODING;
}
return encoding;
}
}