hikariconfig直连oracle数据库

HikariConfig configuration = new HikariConfig();
configuration.setJdbcUrl("jdbc:oracle:thin:@localhost:1521/ORCL");
configuration.setDriverClassName("oracle.jdbc.driver.OracleDriver");
configuration.setUsername("root");
configuration.setPassword("123456");
HikariDataSource dataSource=new HikariDataSource(configuration);
Connection connection = dataSource.getConnection();
PreparedStatement preparedStatement = connection.prepareStatement("SELECT PDATA FROM XCGK_IMG_DATA1 where PID=?");
preparedStatement.setString(1,"123456");
ResultSet resultSet = preparedStatement.executeQuery();
List<String> strings = new ArrayList<>();
while (resultSet.next()) {
    String pdata = resultSet.getString(1);
    strings.add(pdata);
    log.info("pdata->{} ;",pdata);
}
System.out.println(dataSource);
if (preparedStatement!=null) {
    preparedStatement.close();
}
if (dataSource!=null) {
    connection.close();
}

<dependency>
    <groupId>com.oracle</groupId>
    <artifactId>ojdbc8</artifactId>
    <version>8</version>
</dependency>
<dependency>
    <groupId>cn.easyproject</groupId>
    <artifactId>orai18n</artifactId>
    <version>12.1.0.2.0</version>
</dependency>