How can I save the image of a fingerprint reader in Mysql?

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How can I save the image of a fingerprint reader in Mysql?

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#1 by (3 votes)
#2 by (2 votes)

4

I would like to save the image, (NOT the template) of a fingerprint image, the code to convert it according to the DigitalPersona manual is this:

public Image CrearImagenHuella(DPFPSample sample) 
{
 return 
DPFPGlobal.getSampleConversionFactory().createImage(sample);
}

And the code I use to save Mysql is this:

try 
{   
     Connection c=cn.conectar();
     PreparedStatement guardarStmt = c.prepareStatement("INSERT INTO somhue(hnombre,identificacion, huehuella) values(?,?,?)");
     guardarStmt.setString(1,nombre);
     guardarStmt.setInt(2, Id);
     guardarStmt.setBinaryStream(3,in);
     //Ejecuta la sentencia
     guardarStmt.execute();
     guardarStmt.close();
     JOptionPane.showMessageDialog(null,"Huella Guardada Correctamente");
     cn.desconectar();
     BtnGuardar.setEnabled(false);

}
 catch (SQLException ex)
{
     //Si ocurre un error lo indica en la consola
     System.err.println("Error al guardar los datos de la huella.");
     JOptionPane.showMessageDialog(null, "La persona ya se encuentra registrada por favor verificar los datos e intentar de nuevo ","VERIFICACION DE DATOS", JOptionPane.ERROR_MESSAGE);

}
finally
{
cn.desconectar();

}

However I could not use that variable "sample" inside the code to save in mysql, someone who can tell me how to store it?

java

asked by Jorge Herrera 23.08.2016 в 18:43

source

2 answers

2

Thanks to the response of Jose Antonio Dura Olmos , I was able to solve it. Publish the final solution in case a user serves.

In this case by means of BufferedImage I did the following:

Declare a variable called Ejemplo

private DPFPCapture Lector = DPFPGlobal.getCaptureFactory().createCapture();

private DPFPEnrollment Reclutador = DPFPGlobal.getEnrollmentFactory().createEnrollment();

private DPFPVerification Verificador = DPFPGlobal.getVerificationFactory().createVerification();

private DPFPTemplate template;

public BufferedImage Ejemplo;

Then this variable is assigned image , which is what the reader draws me.

Image image=CrearImagenHuella(sample);
DibujarHuella(image);
Ejemplo =  (BufferedImage) image;

Inside the Guardar method I have the following code:

public void guardarHuella(DPFPSample sample)
    {
    try
     {

      //Obtiene los datos del template de la huella actual

      String formato = "JPEG";

      ByteArrayOutputStream out = new ByteArrayOutputStream();
      if(Ejemplo !=null)

       ImageIO.write((RenderedImage) Ejemplo, formato, out);
        DibujarHuella1( Ejemplo);

      InputStream in = new ByteArrayInputStream(out.toByteArray());
      ByteArrayInputStream datosHuella = new ByteArrayInputStream(template.serialize());
      Integer tamañoHuella=template.serialize().length;

      //Pregunta el nombre de la persona a la cual corresponde dicha huella
      String nombre;
      String Identificacion;
      nombre = JOptionPane.showInputDialog("Nombre:");
      Identificacion = JOptionPane.showInputDialog(null,"NUMERO DE IDENTIFICACION:"+"\n" +"NO colocar puntos ni guiones","DATOS PERSONALES",JOptionPane.INFORMATION_MESSAGE);
      //se creó la variable tipo entero llamada Id
      int Id;
      //Convierte la variable Identificacion la cual esta de tipo String a entero por medio de la variable Id
      Id =Integer.parseInt(Identificacion);
        {
          try
        {                    
              //Establece los valores para la sentencia SQL
              Connection c=cn.conectar();
              PreparedStatement guardarStmt = c.prepareStatement("INSERT INTO somhue(hnombre,identificacion, huehuella) values(?,?,?)");
              guardarStmt.setString(1,nombre);
              guardarStmt.setInt(2, Id);
              guardarStmt.setBinaryStream(3,in);
              //Ejecuta la sentencia
              guardarStmt.execute();
              guardarStmt.close();
              JOptionPane.showMessageDialog(null,"Huella Guardada Correctamente");
              cn.desconectar();
              BtnGuardar.setEnabled(false);

              }
           catch (SQLException ex) 
             {
              //Si ocurre un error lo indica en la consola
              System.err.println("Error al guardar los datos de la huella.");
              JOptionPane.showMessageDialog(null, "La persona ya se encuentra registrada por favor verificar los datos e intentar de nuevo ","VERIFICACION DE DATOS", JOptionPane.ERROR_MESSAGE);     
          }
          finally
          {
              cn.desconectar();   
          }      
      }
  } catch (IOException ex) {
      Logger.getLogger(Huella.class.getName()).log(Level.SEVERE, null, ex);
       }
   }

And at the end when I put the visualization in the label, I could already see the image of the fingerprint and store it in the database. It weighs 60KB which is not much.

answered by 24.08.2016 в 18:40

Failed "You need to use a Theme.AppCompat theme (or descendant) with this activity." when opening an Alert Dialog on Android Go to another controller from javascript

score 3 · Accepted Answer

setBinaryStream requires in the second parameter an object of type InputStream

But what you have is an object of type Image , since the code is not complete I guess java.awt.Image

If the object you have was of type BufferedImage it would be easy to convert it to a stream of bytes:

Image imagen = CrearImagenHuella(sample);
BufferedImage buffImg = convertirABufferedImage( imagen );
ByteArrayOutputStream streamWrite = new ByteArrayOutputStream();
ImageIO.write(image,"png", streamWrite); // Puede que quieras otro formato distinto
InputStream in = new ByteArrayInputStream(streamWrite.toByteArray());

/// ... Y ya puedes usar .....

guardarStmt.setBinaryStream(3,in);

Now we just need to convert the image to Buffered image, which I have taken from this English answer from Sri Harsha Chilakapati

/**
 * Convierte una imagen en BufferedImage
 *
 * @param img La Image a convertir
 * @return El BufferedImage convertido
 */
public static BufferedImage convertirABufferedImage(Image img)
{
    if (img instanceof BufferedImage)
    {
        return (BufferedImage) img;
    }

    // Crear imagen buffered con transparencia
    BufferedImage bimage = new BufferedImage(img.getWidth(null), img.getHeight(null), BufferedImage.TYPE_INT_ARGB);

    // Dibujar la imagen en la buffered imagen
    Graphics2D bGr = bimage.createGraphics();
    bGr.drawImage(img, 0, 0, null);
    bGr.dispose();

    // Devolver la buffered image
    return bimage;
}