private static int importCmd(
      CliContext ctx, String specialCmd, String cmd, IoTDBConnection connection) {
    String[] values = specialCmd.split(" ");
    if (values.length != 2) {
      ctx.getPrinter()
          .println(
              "Please input like: import /User/myfile. "
                  + "Noted that your file path cannot contain any space character)");
      return CODE_ERROR;
    }
    ctx.getPrinter().println(cmd.split(" ")[1]);
    try {
      return ImportData.importFromTargetPath(
          host,
          Integer.parseInt(port),
          username,
          password,
          cmd.split(" ")[1],
          connection.getTimeZone());
    } catch (IoTDBConnectionException e) {
      ctx.getPrinter().printException(e);
      return CODE_ERROR;
    }
  }
If cli has not specified a zoneId, it will be set to cli's system timezone by default otherwise
for insert and query accuracy cli should set timezone the same for all sessions.

@param specialCmd
@param cmd
@param connection
@return execute result code
iotdb-client/cli/src/main/java/org/apache/iotdb/cli/AbstractCli.java