Java/Database SQL JDBC/Stream Data

Demo Prepared Statement Set Ascii Stream

import java.io.File;
import java.io.FileInputStream;
import java.io.InputStream;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.SQLException;
public class DemoPreparedStatementSetAsciiStream {
  public static Connection getConnection() throws Exception {
    String driver = "oracle.jdbc.driver.OracleDriver";
    String url = "jdbc:oracle:thin:@localhost:1521:databaseName";
    String username = "name";
    String password = "password";
    Class.forName(driver);
    Connection conn = DriverManager.getConnection(url, username, password);
    return conn;
  }
  public static void main(String[] args) {
    Connection conn = null;
    PreparedStatement pstmt = null;
    String query = null;
    try {
      conn = getConnection();
      String fileName = "fileName.txt";
      File file = new File(fileName);
      int fileLength = (int) file.length();
      InputStream stream = (InputStream) new FileInputStream(file);
      query = "insert into  LONG_VARCHAR_TABLE(id, stream) values(?, ?)";
      pstmt = conn.prepareStatement(query);
      pstmt.setString(1, fileName);
      pstmt.setAsciiStream(2, stream, fileLength);
      int rowCount = pstmt.executeUpdate();
      System.out.println("rowCount=" + rowCount);
    } catch (Exception e) {
      e.printStackTrace();
    } finally {
      try {
        pstmt.close();
        conn.close();
      } catch (SQLException e) {
        e.printStackTrace();
      }
    }
  }
}

Demo Prepared Statement Set BinaryStream

import java.io.File;
import java.io.FileInputStream;
import java.io.InputStream;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
public class DemoPreparedStatementSetBinaryStream {
  public static Connection getConnection() throws Exception {
    String driver = "oracle.jdbc.driver.OracleDriver";
    String url = "jdbc:oracle:thin:@localhost:1521:databaseName";
    String username = "name";
    String password = "password";
    Class.forName(driver);
    Connection conn = DriverManager.getConnection(url, username, password);
    return conn;
  }
  public static void main(String[] args)throws Exception {
    String smallFileName = "smallFileName.dat";
    String largeFileName = "largeFileName.dat";
    Connection conn = null;
    PreparedStatement pstmt = null;
    try {
      conn = getConnection();
      File smallFile = new File(smallFileName);
      int smallFileLength = (int) smallFile.length();
      InputStream smallStream = (InputStream) new FileInputStream(smallFile);
      File largeFile = new File(largeFileName);
      int largeFileLength = (int) largeFile.length();
      InputStream largeStream = (InputStream) new FileInputStream(largeFile);
      String query = "insert into binary_table(id, raw_column, long_raw_column) values(?, ?, ?)";
      conn.setAutoCommit(false);
      pstmt = conn.prepareStatement(query);
      pstmt.setString(1, "0001");
      pstmt.setBinaryStream(2, smallStream, smallFileLength);
      pstmt.setBinaryStream(3, largeStream, largeFileLength);
      // execute query, and return number of rows created
      int rowCount = pstmt.executeUpdate();
      System.out.println("rowCount=" + rowCount);
      conn.rumit();
    } finally {
      pstmt.close();
      conn.close();
    }
  }
}

Demo PreparedStatement Set Character Stream

import java.io.BufferedReader;
import java.io.File;
import java.io.FileReader;
import java.io.Reader;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
public class DemoPreparedStatementSetCharacterStream {
  public static Connection getConnection() throws Exception {
    String driver = "org.gjt.mm.mysql.Driver";
    String url = "jdbc:mysql://localhost/databaseName";
    String username = "root";
    String password = "root";
    Class.forName(driver);
    Connection conn = DriverManager.getConnection(url, username, password);
    return conn;
  }
  public static void main(String[] args)throws Exception {
    String fileName = "charDataFile.txt";
    Reader fileReader = null;
    long fileLength = 0;
    Connection conn = null;
    PreparedStatement pstmt = null;
    try {
      File file = new File(fileName);
      fileLength = file.length();
      fileReader = (Reader) new BufferedReader(new FileReader(file));
      System.out.println("fileName=" + fileName);
      System.out.println("fileLength=" + fileLength);
      conn = getConnection();
      // begin transaction
      conn.setAutoCommit(false);
      // prepare SQL query for inserting a new row using SetCharacterStream()
      String query = "insert into char_stream_table (id, char_stream_column) values(?, ?)";
      // create PrepareStatement object
      pstmt = conn.prepareStatement(query);
      pstmt.setString(1, fileName);
      pstmt.setCharacterStream(2, fileReader, (int) fileLength);
      // execute query, and return number of rows created
      int rowCount = pstmt.executeUpdate();
      System.out.println("rowCount=" + rowCount);
      // end transaction
      conn.rumit();
    } finally {
      pstmt.close();
      conn.close();
    }
  }
}

Insert Text File To Oracle

import java.io.File;
import java.io.FileInputStream;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
public class InsertTextFileToOracle {
  public static Connection getConnection() throws Exception {
    String driver = "oracle.jdbc.driver.OracleDriver";
    String url = "jdbc:oracle:thin:@localhost:1521:oracle";
    String username = "username";
    String password = "password";
    Class.forName(driver);
    Connection conn = DriverManager.getConnection(url, username, password);
    return conn;
  }
  public static void main(String[] args)throws Exception {
    String id = "001";
    String fileName = "fileName.txt";
    
    FileInputStream fis = null;
    PreparedStatement pstmt = null;
    Connection conn = null;
    try {
      conn = getConnection();
      conn.setAutoCommit(false);
      File file = new File(fileName);
      fis = new FileInputStream(file);
      pstmt = conn.prepareStatement("insert into DataFiles(id, fileName, fileBody) values (?, ?, ?)");
      pstmt.setString(1, id);
      pstmt.setString(2, fileName);
      pstmt.setAsciiStream(3, fis, (int) file.length());
      pstmt.executeUpdate();
      conn.rumit();
    } catch (Exception e) {
      System.err.println("Error: " + e.getMessage());
      e.printStackTrace();
    } finally {
      pstmt.close();
      fis.close();
      conn.close();
    }
  }
}