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  • Multiple File Upload Bug

    Hi, Isomorphic,
    I'm having some trouble when I try to insert a record that contains 2 images.

    Tried with both versions:
    v12.0p_2019-03-13/PowerEdition Deployment (built 2019-03-13)
    v12.0p_2019-02-19/PowerEdition Deployment (built 2019-02-19)

    How to reproduce the problem:

    1) Images are sent to the server. I select a few images using smartgwt FileItem widget.
    2) On the server side (class AnexoDataSource), I get the image sent and resize it, making a thumbnail.
    3) The I save the original image and the resized image (using Isomorphic Framework / SQLDataSource).
    4) The thumbnail data is not saved in the database, a blank byte[] array is saved instead of the data.

    Here is my datasource:
    <DataSource ID="atestado_anexo" serverType="sql" dataSourceVersion="1"
            <field name="codigo" type="sequence" title="Código" primaryKey="true" hidden="true">
            <field name="cod_atestado" type="integer" required="true" hidden="true" title="Atestado">
            <field name="title" title="Descrição">
            <field name="image" type="imageFile" title="Imagem">
            <field name="image_thumbnail" type="imageFile" hidden="true">
    My server side method:
    package org.microcodigo.server;
    import com.isomorphic.datasource.DSRequest;
    import com.isomorphic.datasource.DSResponse;
    import com.isomorphic.servlet.ISCFileItem;
    import com.isomorphic.sql.SQLDataSource;
    import com.isomorphic.util.ErrorReport;
    import java.awt.Graphics2D;
    import java.awt.Image;
    import java.awt.image.BufferedImage;
    import java.util.*;
    import javax.imageio.ImageIO;
    import org.apache.log4j.Level;
    import org.apache.log4j.Logger;
     * @author kiipper
    public class TestDataSource extends SQLDataSource {
        private static final float THUMBNAIL_SIZE = 200f;
        public DSResponse executeAdd(final DSRequest dsRequest) throws Exception {
            DSResponse resp = null;
            byte[] imageData;
            String filename;
            if (dsRequest.getUploadedFiles() != null) {
                ArrayList<ISCFileItem> fileList = new ArrayList(dsRequest.getUploadedFiles());
                for (ISCFileItem fileItem : fileList) {
                    //final ISCFileItem fileItem = dsRequest.getUploadedFile("image");
                    imageData = fileItem.get();
                    filename = fileItem.getFileName(); //All file names come here in the same string. (ex. "filename1.png, filename2.png, filename3.png")
                    final Map<String, Object> imageValues = dsRequest.getValues();
                    int i = -1;
                    i = Math.max(i, filename.lastIndexOf('\\'));
                    i = Math.max(i, filename.lastIndexOf('/'));
                    filename = filename.substring(i + 1);
                    filename = filename.replaceAll("[^\\x00-\\x7F]", "");
                    imageValues.put("image_filename", filename);
                    imageValues.put("image", new ByteArrayInputStream(imageData));
                    imageValues.put("image_date_created", new Date());
                    imageValues.put("image_filesize", imageData.length);
                    try {
                        BufferedImage bImage = ByteArrayInputStream(imageData));
                        if (bImage != null) {
                            int w = bImage.getWidth();
                            int h = bImage.getHeight();
                            float ratio = (float) THUMBNAIL_SIZE / (float) Math.max(w, h);
                            w = (int) (w * ratio);
                            h = (int) (h * ratio);
                            // Create a buffered image with transparency
                            Image img = bImage.getScaledInstance(w, h, Image.SCALE_SMOOTH);
                            BufferedImage image_thumbnail = new BufferedImage(img.getWidth(null), img.getHeight(null), BufferedImage.TYPE_INT_ARGB);
                            // Draw the image on to the buffered image
                            Graphics2D bGr = image_thumbnail.createGraphics();
                            bGr.drawImage(img, 0, 0, null);
                            ByteArrayOutputStream baos = new ByteArrayOutputStream();
                            ImageIO.write(image_thumbnail.getSubimage(0, 0, w, h), "png", baos);
                            byte thumbData[];
                            thumbData = baos.toByteArray();
                            //thumbData = org.apache.commons.codec.binary.Base64.encodeBase64(baos.toByteArray());
                            imageValues.put("image_thumbnail", new ByteArrayInputStream(thumbData)); //You could use anything to test here, the problem persists (ex. new ByteArrayInputStream("some data".getBytes())
                            imageValues.put("image_thumbnail_filename", "tb_" + filename);
                            imageValues.put("image_thumbnail_date_created", new Date());
                            imageValues.put("image_thumbnail_filesize", thumbData.length);
                        resp = super.executeAdd(dsRequest);
                    } catch (NullPointerException | IOException ex) {
                        Logger.getLogger(this.getClass()).log(Level.ERROR, ex);
                        resp = new DSResponse();
                        ErrorReport er = new ErrorReport();
                        er.addError("image", ex.getMessage());
            return resp;
    Thats my DB table 'PostgreSQL 9.6.9'
    CREATE TABLE public.provisorio_anexo
      title text,
      image bytea, -- Imagem, pdf, etc...
      image_date_created timestamp without time zone DEFAULT ('now'::text)::timestamp without time zone,
      image_filename text,
      image_filesize numeric,
      image_thumbnail bytea,
      image_thumbnail_date_created timestamp without time zone,
      image_thumbnail_filename text,
      image_thumbnail_filesize numeric
    Side notes:
    1. It work when i upload only one image, but if I use more than one the problem happen.
    2. When I get the name of the image uploaded the return is an String with all files separated by ", ", this is not a problem since i can split then myself, but it might not be right.

  • #2
    Hi guys,
    it's been a while and I'm still have the same problem.
    Do you have any feedback about this issue?
    Do you need more information?