Inserting a pdf file in mysql database using jdbc

Question

hi guys,
i'm developing an application, where i have to upload the documents and store it in the database.
i'm using mysql db. using the jdbc statements i have stored the contents of the pdf file. But, i'm unable to read the content, it's looks like junk values. and when i retrieved using the stream objects. it looks like the same.
i'm able to store and retrieve the text based and image files.
is it possible to store pdf and word documents in the database columns directly??
any ideas are appreciated.
thanks in advance,
-bala

Answer 1

This may help[
Table example
DROP TABLE IF EXISTS `employeephoto`;
CREATE TABLE `employeephoto` (
`Employee_ID` varchar(15) NOT NULL default '',
`Binary_Photo` mediumblob NOT NULL,
`LastUser` varchar(100) NOT NULL default '',
`LastMod` datetime NOT NULL default '0000-00-00 00:00:00',
`Created` datetime NOT NULL default '0000-00-00 00:00:00',
PRIMARY KEY (`Employee_ID`)
) TYPE=MyISAM;
Save photo as jpeg to database
public static void saveMySqlPhoto(String empID, ImageIcon icon) {
  try {
    Image image = icon.getImage();
    BufferedImage bImage = new BufferedImage(image.getWidth(null),image.getHeight(null),BufferedImage.TYPE_INT_RGB);
    Graphics bg = bImage.getGraphics();
    bg.drawImage(image,0,0,null);
    bg.dispose();
    ByteArrayOutputStream out = new ByteArrayOutputStream();
    ImageIO.write(bImage,"jpeg",out);
    byte[] buf = out.toByteArray();
    // setup stream for blob
    ByteArrayInputStream inStream = new ByteArrayInputStream(buf);
    // get or create a connection here
    Connection photoConnection = startup.connectionPool.getConnection();
    sqlStatement = "insert into employeephoto (Employee_ID,Binary_Photo,LastUser,LastMod,Created) values ('"+empID+"', ?, '"+startup.User+"', NOW(), NOW())";
    ps = photoConnection.prepareStatement(sqlStatement);
    ps.setBinaryStream(1,inStream,inStream.available());
    ps.executeUpdate();
    // release or close connection here
    startup.connectionPool.releaseConnection(photoConnection);
  catch (Exception exc) {
    // process error
}Retrieve photo from database
public static ImageIcon getMySqlPhoto(String employeeID){
  ImageIcon dPhoto = null;
  // get or create a connection here
  Connection photoConnection = connectionPool.getConnection();
  String sqlStatement = "select Binary_Photo from employeephoto where Employee_ID = '"+employeeID+"'";
  try {
    ResultSet rs = photoConnection.createStatement().executeQuery(sqlStatement);
    if (rs.next()){
      Blob image = rs.getBlob("Binary_Photo");
      // setup the streams
      InputStream input = image.getBinaryStream();
      ByteArrayOutputStream output = new ByteArrayOutputStream();
      // set read buffer size
      byte[] rb = new byte[1024];
      int ch = 0;
      // process blob
      while ((ch=input.read(rb)) != -1){
        output.write(rb, 0, ch);
      byte[] b = output.toByteArray();
      input.close();
      output.close();
      // load final buffer
      dPhoto = new ImageIcon(b);
    rs.close();
  catch (Exception exc) {
    // do error processing
  // release or close connection here
  connectionPool.releaseConnection(photoConnection);
  return dPhoto;
public byte[] toByteArray(int width, int height, BufferedImage imageBuff) throws java.io.IOException{
  BufferedImage bi = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB);
  bi.getGraphics().drawImage(imageBuff, 0, 0, null);
  ByteArrayOutputStream out = new ByteArrayOutputStream();
  JPEGImageEncoder encoder = JPEGCodec.createJPEGEncoder(out);
  JPEGEncodeParam param = encoder.getDefaultJPEGEncodeParam(bi);
  param.setQuality(1.0f, false);
  encoder.setJPEGEncodeParam(param);
  encoder.encode(bi);
  return out.toByteArray();
}rykk