이제 시작이야

var today = new Date().toISOString().substr(0, 10).replace('T', ' ');

현재 날짜가 2017-06-07 가져옴

import java.io.File;
import java.io.FileOutputStream;
import java.io.InputStream;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.ResultSet;

public class Main {
  static String url = "jdbc:oracle:thin:@localhost:1521:javaDemo";
  static String username = "username";
  static String password = "welcome";
  public static void main(String[] args) throws Exception {
    Class.forName("oracle.jdbc.driver.OracleDriver");
    Connection conn = DriverManager.getConnection(url, username, password);

    String sql = "SELECT name, description, image FROM pictures ";
    PreparedStatement stmt = conn.prepareStatement(sql);
    ResultSet resultSet = stmt.executeQuery();
    while (resultSet.next()) {
      String name = resultSet.getString(1);
      String description = resultSet.getString(2);
      File image = new File("D:\\java.gif");
      FileOutputStream fos = new FileOutputStream(image);

      byte[] buffer = new byte[1];
      InputStream is = resultSet.getBinaryStream(3);
      while (is.read(buffer) > 0) {
        fos.write(buffer);
      }
      fos.close();
    }
    conn.close();
  }
}

import java.io.File;
import java.io.FileInputStream;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;

public class Main {
  public static void main(String[] argv) throws Exception {
    File file = new File("myimage.gif");
    FileInputStream fis = new FileInputStream(file);
    Class.forName("oracle.jdbc.driver.OracleDriver");
    Connection conn = DriverManager.getConnection(
        "jdbc:oracle:thin:@//server.local:1521/prod", "scott", "tiger");
    conn.setAutoCommit(false);
    PreparedStatement ps = conn
        .prepareStatement("insert into images values (?,?)");
    ps.setString(1, file.getName());
    ps.setBinaryStream(2, fis, (int) file.length());
    ps.executeUpdate();
    ps.close();
    fis.close();

  }
}