1.
//System.out.println("decodeUnicode:" + decodeUnicode("0049"));//I
public static String decodeUnicode(final String dataStr) {
int start = 0;
int end = 0;
final StringBuffer buffer = new StringBuffer();
while (start > -1) {
end = dataStr.indexOf("\\u", start + 2);
String charStr = "";
if (end == -1) {
charStr = dataStr.substring(start + 2, dataStr.length());
} else {
charStr = dataStr.substring(start + 2, end);
}
char letter = (char) Integer.parseInt(charStr, 16); // 16进制parse整形字符串。
buffer.append(new Character(letter).toString());
start = end;
}
return buffer.toString();
}