兼容oracle字段大写

import java.sql.*;
public class oracle_test {
   public static void main(String args[]) {
      Connection c = null;
      Statement stmt = null;
      try {
         Class.forName("org.postgresql.Driver");
         c = DriverManager.getConnection("jdbc:postgresql://172.16.0.30:11345/postgres?oracle_compile=true","tbase", "tbase");
         c.setAutoCommit(false);
         System.out.println("Opened database successfully");

         PreparedStatement preparedStatement = null;
         try {
            preparedStatement = c.prepareStatement("select * from public.select_normal");
            ResultSetMetaData metaData =  preparedStatement.getMetaData();
            for (int i = 0; i < metaData.getColumnCount(); i++) {
                // resultSet数据下标从1开始
                String columnName = metaData.getColumnName(i + 1);
                int type = metaData.getColumnType(i + 1);
                System.out.println("列名："+columnName);
            }
         } catch (SQLException e) {
            e.printStackTrace();
         }             
      } catch (Exception e) {
         System.err.println( e.getClass().getName()+": "+ e.getMessage() );
         System.exit(0);
      }
      System.out.println("Records created successfully");
   }
}