1. import java.security.MessageDigest;
    2. import java.text.SimpleDateFormat;
    3. import java.util.Date;
    5. private SimpleDateFormat sdf = new SimpleDateFormat("yyMMdd");
    7. public boolean processRow(StepMetaInterface smi, StepDataInterface sdi) throws KettleException {
    8.   if (first) {
    9.     first = false;
    10.   }
    12.   Object[] r = getRow();
    14.   if (r == null) {
    15.     setOutputDone();
    16.     return false;
    17.   }
    18.   r = createOutputRow(r, data.outputRowMeta.size());
    20.   String password = get(Fields.In, "password").getString(r);
    21.   String yyMMdd = sdf.format(new Date());
    22.   String encry_origin = password+yyMMdd;
    23.   password = encode(encry_origin);
    25.   get(Fields.Out, "password").setValue(r, password);
    27.   putRow(data.outputRowMeta, r);
    29.   return true;
    30. }
    32. public static String encode(String str) {
    33.     if (str == null) {
    34.         return null;
    35.     }
    36.     try {
    37.         MessageDigest messageDigest = MessageDigest.getInstance("SHA1");
    38.         messageDigest.update(str.getBytes());
    39.         return getFormattedText(messageDigest.digest());
    40.     } catch (Exception e) {
    41.         throw new RuntimeException(e);
    42.     }
    43. }
    45. private static final char[] HEX_DIGITS = {'0', '1', '2', '3', '4', '5',
    46.                                           '6', '7', '8', '9', 'a', 'b', 'c', 'd', 'e', 'f'};
    48. private static String getFormattedText(byte[] bytes) {
    49.     int len = bytes.length;
    50.     StringBuilder buf = new StringBuilder(len * 2);
    51.     // 把密文转换成十六进制的字符串形式
    52.     for (int j = 0; j < len; j++) {
    53.         buf.append(HEX_DIGITS[(bytes[j] >> 4) & 0x0f]);
    54.         buf.append(HEX_DIGITS[bytes[j] & 0x0f]);
    55.     }
    56.     return buf.toString();
    57. }