自动判断字符编码的格式以及转码代码,Java代码库,德仔网

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【Java】自动判断字符编码的格式以及转码

作者:dezai / 发布于2014/7/3/ 248


	public class TranCharset {
	
	 private static final String PRE_FIX_UTF = "&#x";
	 private static final String POS_FIX_UTF = ";";
	
	 public TranCharset() {
	 }
	
	
	 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();
	 }
	
	
	 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;
	 }
	 }
	
	
	 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;
	 }
	
	
	 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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