例如 ?＆＃２７８６１； 解码为 汉字 ‘法’

?

private static String decodeUnicode(final String dataStr) {
??int start = 0;
??int end = 0;
??final StringBuffer buffer = new StringBuffer();
??while (start > -1) {
???int system = 10;// 进制
???if (start == 0) {
????int t = dataStr.indexOf("&#");
????if (start != t)
?????start = t;
???}
???end = dataStr.indexOf(";", start + 2);
???String charStr = "";
???if (end != -1) {
????charStr = dataStr.substring(start + 2, end);
????// 判断进制
????char s = charStr.charAt(0);
????if (s == 'x' || s == 'X') {
?????system = 16;
?????charStr = charStr.substring(1);
????}
???}
???// 转换
???try {
????char letter = (char) Integer.parseInt(charStr, system);
????buffer.append(new Character(letter).toString());
???} catch (NumberFormatException e) {
????e.printStackTrace();
???}
???// 处理当前unicode字符到下一个unicode字符之间的非unicode字符
???start = dataStr.indexOf("&#", end);
???if (start - end > 1) {
????buffer.append(dataStr.substring(end + 1, start));
???}
???// 处理最后面的非unicode字符
???if (start == -1) {
????int length = dataStr.length();
????if (end + 1 != length) {
?????buffer.append(dataStr.substring(end + 1, length));
????}
???}
??}
??return buffer.toString();
?}