public static String htmlEntityEncode(String s) {

	StringBuffer buf = new StringBuffer();
	for (int i = 0; i < s.length(); i++) {
		char c = s.charAt(i);
		if (c >= 'a' && c <= 'z' || c >= 'A' && c <= 'Z' || c >= '0'
				&& c <= '9') {
			buf.append(c);
		} else {
			buf.append("&#" + (int) c + ";");
		}
	}
	return buf.toString();
}