将Zoned Decimal从Ebcdic文件转换为Java String

Question

之前是否有人试图进行字幕转换？实际上，我想在下面做一些事情：

public static Object parseZonedDec(byte[] byte_array) throws Exception {
  String val = getHexString(byte_array);
  int len = val.length();
  return val.substring(1, len-1); // not sure if this is correct?
}

public static String getHexString(byte[] b) {
  if (b == null) {
    return null;
  }

  StringBuffer sb = new StringBuffer();

  for (int i=0; i < b.length; i++)
  {
    sb.append(Integer.toString( (b[i] & 0xff ) + 0x100, 16).substring(1));
  }
  return sb.toString().toUpperCase;
}

谢谢！

Answer 1

您可以尝试下面的代码

    public long parseZonedDec(byte[] data) {
    long val = 0L;
    boolean negative = false;
    for (int i = 0; i < data.length; i++) {
        int raw = data[i] & UNSIGNED_BYTE;
        int digitA = raw >> 4;
        int digitB = raw & BITS_RIGHT;

        if (digitA < 10) {
            val *= 10L;
            val += (long) digitA;

        } else if (digitA == 11 || digitA == 13) { 
            negative = true;
        }

        if (digitB < 10) {
            val *= 10L;
            val += (long) digitB;

        } else if (digitB == 11 || digitB == 13) {
            negative = true;
        }
    }
    if (negative)
        val = -val;
    return val;
}