Question

I have a desktop programm and I must to save image files with different formats and different sizes in db. Any idea how can I do that? anyone can help me, please?

Answer 1

You can Save Image into Database by Converting it into binary as follow:

public void saveImage(File file){
        try {
            String img_id=JOptionPane.showInputDialog("Enter Image ID");
            FileInputStream fis=null;
            String query="insert into image(image_id,image) values (?,?)";
            Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
            Connection con=DriverManager.getConnection("jdbc:odbc:image");
            PreparedStatement pstm=con.prepareStatement(query);
            fis=new FileInputStream(file);
            pstm.setString(1, img_id);       
            pstm.setBinaryStream(2, (InputStream)fis, (int)file.length());
            pstm.executeUpdate();
            JOptionPane.showMessageDialog(null, "Image Successfully Uploaded to Database");
            pstm.close();
            con.close();

        } catch (Exception ex) {
            System.out.println("Exception Occured: "+ex);
        }
    }

And Retrieve it by again making Image from binary and Save it on some physical Location:

public void getSavedImages(){
        try {
            Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
            Connection con = DriverManager.getConnection("jdbc:odbc:image");
            PreparedStatement pstm1 = con.prepareStatement("select * from image");
            ResultSet rs1 = pstm1.executeQuery();
            while(rs1.next()) {
                InputStream fis1;
                FileOutputStream fos;
                String image_id;
                try {
                    fis1 = rs1.getBinaryStream("image");
                    image_id=rs1.getString("image_id");
                    fos = new FileOutputStream(new File(Path to "C:\\" + (image_id) + "Your Extension(.jpg/.gif)"));
                    int c;
                    while ((c = fis1.read()) != -1) {
                        fos.write(c);
                    }
                    fis1.close();
                    fos.close();

                } catch (Exception ex) {
                    System.out.println(ex);
                }
            } 
            pstm1.close();
            con.close();
        } catch (Exception ex) {
            System.out.println("Exception Occured:"+ex);
        }
    }