java中判断字符编码以及转码
java中判断字符编码以及转码[参考]判断字符编码以及转码的一个工具类http://hi.baidu.com/pazhu/blog/item/efcce7a2034ae9a8caefd05b.html2008-07-01 08:55/*** Date: 2008-6-27* <p>Copyright: Copyright (c) 2006</p>** @version 1.0* @author: SRH*/public class TranCharset { private static final String PRE_FIX_UTF = "&#x"; private static final String POS_FIX_UTF = ";"; public TranCharset() { } /** * Translate charset encoding to unicode * * @param sTemp charset encoding is gb2312 * @return charset encoding is unicode */ public static String XmlFormalize(String sTemp) { StringBuffer sb = new StringBuffer(); if (sTemp == null || sTemp.equals("")) { return ""; } String s = TranCharset.TranEncodeTOGB(sTemp); for (int i = 0; i < s.length(); i++) { char cChar = s.charAt(i); if (TranCharset.isGB2312(cChar)) { sb.append(PRE_FIX_UTF); sb.append(Integer.toHexString(cChar)); sb.append(POS_FIX_UTF); } else { switch ((int) cChar) { case 32: sb.append("&#32;"); break; case 34: sb.append("&quot;"); break; case 38: sb.append("&amp;"); break; case 60: sb.append("&lt;"); break; case 62: sb.append("&gt;"); break; default: sb.append(cChar); } } } return sb.toString(); } /** * 将字符串编码格式转成GB2312 * * @param str * @return */ public static String TranEncodeTOGB(String str) { try { String strEncode = TranCharset.getEncoding(str); String temp = new String(str.getBytes(strEncode), "GB2312"); return temp; } catch (java.io.IOException ex) { return null; } } /** * 判断输入字符是否为gb2312的编码格式 * * @param c 输入字符 * @return 如果是gb2312返回真，否则返回假 */ public static boolean isGB2312(char c) { Character ch = new Character(c); String sCh = ch.toString(); try { byte[] bb = sCh.getBytes("gb2312"); if (bb.length > 1) { return true; } } catch (java.io.UnsupportedEncodingException ex) { return false; } return false; } /** * 判断字符串的编码 * * @param str * @return */ public static String getEncoding(String str) { String encode = "GB2312"; try { if (str.equals(new String(str.getBytes(encode), encode))) { String s = encode; return s; } } catch (Exception exception) { } encode = "ISO-8859-1"; try { if (str.equals(new String(str.getBytes(encode), encode))) { String s1 = encode; return s1; } } catch (Exception exception1) { } encode = "UTF-8"; try { if (str.equals(new String(str.getBytes(encode), encode))) { String s2 = encode; return s2; } } catch (Exception exception2) { } encode = "GBK"; try { if (str.equals(new String(str.getBytes(encode), encode))) { String s3 = encode; return s3; } } catch (Exception exception3) { } return ""; }}
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