问如何将preparedStatement中的字符编码格式更改为UTF-8 .

EN

    Connection dbConnection = getDBConnection();
    System.out.println("CONNECTED TO DB");
    PreparedStatement preparedStatement = null;
    String countString;
    String fileName;
    String seed;
    ResultSet rs = null;

    BufferedReader br = new BufferedReader(new FileReader("/home/aoblah/Documents/Metaphor-July/Russian/MotherRussia"));
    String line;
    while(null != (line = br.readLine())){
        splitsVille = line.split(":");
        fileName = splitsVille[0].trim();
        seed = splitsVille[1].trim();
        countString = "SELECT COUNT(*) FROM metaphor_repository.source_domain_russian_OY2_v3 where filename = ? AND seed = ?" ;
        preparedStatement = dbConnection.prepareStatement(countString);
        preparedStatement.setString(1, fileName);
        preparedStatement.setString(2, seed);

        rs = preparedStatement.executeQuery();
        if (rs.next()) {
            int numberOfRows = rs.getInt(1);
            System.out.println("numberOfRows= " + numberOfRows);
        } else {
            System.out.println("error: could not get the record counts");
        }


    }

    rs.close();
    preparedStatement.close();
    dbConnection.close();

    return true;        
}