* 例如將 dynamicMsg: \344\270\215\350\203\27510 轉換為 dynamicMsg: 不能10*/
public static String transfromOctalToString(String dataStr) {
if (! dataStr.contains("\\")) {
return dataStr;
}
//不屬於八進制內容的字符
StringBuilder oldBuffer = new StringBuilder();
//屬於八進制的內容，轉成十六進制後緩存在這裏
StringBuilder hexBuffer = new StringBuilder();
for (int i = 0; i < dataStr.length(); i ++) {
char c = dataStr.charAt(i);
if (c != '\\') {
oldBuffer.append(c);
}
//反斜杠往後3個為壹組，組成了壹個八進制數。例如\20710,其實是207組成了壹個八進制數
else {
char c1 = dataStr.charAt(i + 1);
char c2 = dataStr.charAt(i + 2);
char c3 = dataStr.charAt(i + 3);
i += 3;
//將八進制轉換為十進制，再轉換為十六進制
String hex = Integer.toHexString((Integer.valueOf("" + c1 + c2 + c3, 8)));
//先緩存住，直到湊夠三個字節
hexBuffer.append(hex);
String hexString = hexBuffer.toString();
//utf8編碼中，三個字節為壹個漢字
if (hexString.length() == 6) {
//湊夠三個字節了，轉成漢字後放入oldBuffer中
oldBuffer.append(hexStr2Str(hexString));
//湊夠壹個漢字了，清空緩存
hexBuffer = new StringBuilder();
}
}
}
return oldBuffer.toString();
}
/**
* 十六進制轉換字符串
*/
private static String hexStr2Str(String hexStr) {
String str = "0123456789abcdef";
char[] hexs = hexStr.toCharArray();
byte[] bytes = new byte[hexStr.length() / 2];
int n;
for (int i = 0; i < bytes.length; i++) {
n = str.indexOf(hexs[2 * i]) * 16;
n += str.indexOf(hexs[2 * i + 1]);
bytes[i] = (byte) (n & 0xff);
}
return new String(bytes, StandardCharsets.UTF_8);
}