Example usage for javax.imageio ImageIO read

List of usage examples for javax.imageio ImageIO read

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Introduction

In this page you can find the example usage for javax.imageio ImageIO read.

Prototype

public static BufferedImage read(ImageInputStream stream) throws IOException

Source Link

Document

Returns a BufferedImage as the result of decoding a supplied ImageInputStream with an ImageReader chosen automatically from among those currently registered.

Usage

From source file:com.dbi.jmmerge.MapController.java

@RequestMapping(value = "/maps/{server}/{dimension}/{level}/{x},{y}.png", produces = "image/png")
public byte[] grabImage(@PathVariable("server") String server, @PathVariable("dimension") String dimension,
        @PathVariable("level") String level, @PathVariable("x") String x, @PathVariable("y") String y)
        throws IOException {
    File imageFile = buildFileByElements(new File(storageDir), server, "DIM" + dimension, level,
            x + "," + y + "-opaque.png");
    if (!imageFile.exists()) {
        File originalImageFile = buildFileByElements(new File(storageDir), server, "DIM" + dimension, level,
                x + "," + y + ".png");

        if (!originalImageFile.exists()) {
            LOG.error("Could not find file: " + originalImageFile.getAbsolutePath());
            throw new IllegalArgumentException("Could not find file:" + originalImageFile.getName());
        }/*from w  w w  . j a v a2 s. c om*/

        ImageIO.write(PNGMerge.blackBackgroundedImage(ImageIO.read(originalImageFile)), "png", imageFile);
    }
    ByteArrayOutputStream baos = new ByteArrayOutputStream();
    IOUtils.copy(new FileInputStream(imageFile), baos);
    return baos.toByteArray();
}

From source file:com.impetus.client.crud.datatypes.ByteDataTest.java

/**
 * On insert image in cassandra blob object
 * /*from w  w w  .  j a  v a2  s .c o m*/
 * @throws Exception
 *             the exception
 */
@Test
public void onInsertBlobImageCassandra() throws Exception {

    PersonCassandra personWithKey = new PersonCassandra();
    personWithKey.setPersonId("111");

    BufferedImage originalImage = ImageIO.read(new File("src/test/resources/nature.jpg"));
    ByteArrayOutputStream baos = new ByteArrayOutputStream();
    ImageIO.write(originalImage, "jpg", baos);
    baos.flush();
    byte[] imageInByte = baos.toByteArray();

    baos.close();

    personWithKey.setA(imageInByte);
    em.persist(personWithKey);

    em.clear();

    String qry = "Select p from PersonCassandra p where p.personId = 111";
    Query q = em.createQuery(qry);
    List<PersonCassandra> persons = q.getResultList();
    PersonCassandra person = persons.get(0);

    InputStream in = new ByteArrayInputStream(person.getA());
    BufferedImage bImageFromConvert = ImageIO.read(in);

    ImageIO.write(bImageFromConvert, "jpg", new File("src/test/resources/nature-test.jpg"));

    Assert.assertNotNull(person.getA());
    Assert.assertEquals(new File("src/test/resources/nature.jpg").getTotalSpace(),
            new File("src/test/resources/nature-test.jpg").getTotalSpace());
    Assert.assertEquals(String.valueOf(Hex.encodeHex((byte[]) imageInByte)),
            String.valueOf(Hex.encodeHex((byte[]) person.getA())));

}

From source file:net.sourceforge.subsonic.controller.AvatarUploadController.java

private void createAvatar(String fileName, byte[] data, String username, Map<String, Object> map)
        throws IOException {

    BufferedImage image;//w ww. j  a  v a 2 s . c  o m
    try {
        image = ImageIO.read(new ByteArrayInputStream(data));
        if (image == null) {
            throw new Exception(
                    "Failed to decode incoming image: " + fileName + " (" + data.length + " bytes).");
        }
        int width = image.getWidth();
        int height = image.getHeight();
        String mimeType = StringUtil.getMimeType(FilenameUtils.getExtension(fileName));

        // Scale down image if necessary.
        if (width > MAX_AVATAR_SIZE || height > MAX_AVATAR_SIZE) {
            double scaleFactor = (double) MAX_AVATAR_SIZE / (double) Math.max(width, height);
            height = (int) (height * scaleFactor);
            width = (int) (width * scaleFactor);
            image = CoverArtController.scale(image, width, height);
            ByteArrayOutputStream out = new ByteArrayOutputStream();
            ImageIO.write(image, "jpeg", out);
            data = out.toByteArray();
            mimeType = StringUtil.getMimeType("jpeg");
            map.put("resized", true);
        }
        Avatar avatar = new Avatar(0, fileName, new Date(), mimeType, width, height, data);
        settingsService.setCustomAvatar(avatar, username);
        LOG.info("Created avatar '" + fileName + "' (" + data.length + " bytes) for user " + username);

    } catch (Exception x) {
        LOG.warn("Failed to upload personal image: " + x, x);
        map.put("error", x);
    }
}

From source file:edu.harvard.mcz.imagecapture.WhatsThisImageDialog.java

/** Constructor with an image File to display as a parameter.  Will
 * display a broken image icon if File can't be read as an
 * image./*from w  ww  .java 2s . com*/
 * 
 * @param owner the parent frame for this dialog.
 * @param imageFileToShow the image file of unknown nature to display.
 */
public WhatsThisImageDialog(Frame owner, File imageFileToShow) {
    super(owner, true);
    thisDialog = this;
    initialize();
    BufferedImage image;
    try {
        image = ImageIO.read(imageFileToShow);
        this.setImage(image);
    } catch (IOException e) {
        log.error("Unable to open selected image " + imageFileToShow.getName());
        log.debug(e);
        URL errorFilename = this.getClass()
                .getResource("/edu/harvard/mcz/imagecapture/resources/unableToLoadImage.jpg");
        try {
            this.setImage(ImageIO.read(errorFilename));
        } catch (IOException e1) {
            log.error("Unable to open resource image");
            log.error(e1);
        }
    }
}

From source file:com.qwazr.crawler.web.driver.BrowserDriver.java

final public BufferedImage getScreenshot() throws IOException {
    if (!(driver instanceof TakesScreenshot))
        throw new WebDriverException("This browser driver does not support screenshot");
    TakesScreenshot takesScreenshot = (TakesScreenshot) driver;
    byte[] data = takesScreenshot.getScreenshotAs(OutputType.BYTES);
    return ImageIO.read(new ByteArrayInputStream(data));
}

From source file:com.liud.dailynote.ThumbnailatorTest.java

private void testYS8() throws IOException {
    String result = "src/main/resources/images/";
    OutputStream os = new FileOutputStream(result + "sijili_out.jpg");

    Image image = ImageIO.read(new File(result + "sijili.jpg"));

    BufferedImage bufferedImage = new BufferedImage(100, 100, BufferedImage.TYPE_INT_RGB);
    bufferedImage.getGraphics().drawImage(image.getScaledInstance(100, 100, image.SCALE_SMOOTH), 0, 0, null);

    ImageIO.write(bufferedImage, "jpg", os);
    os.close();/*from  ww  w  .  jav a  2 s  .  c o m*/
}

From source file:com.github.zhanhb.ckfinder.connector.utils.ImageUtils.java

/**
 * Uploads image and if the image size is larger than maximum allowed it
 * resizes the image.//from   ww w .  j a  va 2s.c  o  m
 *
 * @param part servlet part
 * @param file file name
 * @param fileName name of file
 * @param context ckfinder context
 * @throws IOException when IO Exception occurs.
 */
public static void createTmpThumb(InputStreamSource part, Path file, String fileName, CKFinderContext context)
        throws IOException {
    BufferedImage image;
    try (InputStream stream = part.getInputStream()) {
        image = ImageIO.read(stream);
        if (image == null) {
            throw new IOException("Wrong file");
        }
    }
    ImageProperties imageProperties = context.getImage();
    Dimension dimension = createThumbDimension(image, imageProperties.getMaxWidth(),
            imageProperties.getMaxHeight());
    if (dimension.width == 0 || dimension.height == 0
            || (image.getHeight() <= dimension.height && image.getWidth() <= dimension.width)) {
        try (InputStream stream = part.getInputStream()) {
            Files.copy(stream, file, StandardCopyOption.REPLACE_EXISTING);
        }
    } else {
        resizeImage(image, dimension.width, dimension.height, imageProperties.getQuality(), file);
    }
    if (log.isTraceEnabled()) {
        log.trace("thumb size: {}", Files.size(file));
    }
}

From source file:com.seleniumtests.it.driver.TestBrowserSnapshot.java

/**
 * Read the capture file to detect dimension
 * It assumes that picture background is white and counts the number of white pixels in width and height (first column and first row)
 * @return/*from w  w  w. j  av  a2  s .c om*/
 * @throws IOException 
 */
private Dimension getViewPortDimension(File picture) throws IOException {
    BufferedImage image = ImageIO.read(picture);

    int width = 0;
    int height = 0;
    for (width = 0; width < image.getWidth(); width++) {
        Color color = new Color(image.getRGB(width, 0));
        if (!(color.equals(Color.WHITE) || color.equals(Color.YELLOW) || color.equals(Color.ORANGE)
                || color.equals(Color.GREEN) || color.equals(Color.RED))) {
            break;
        }
    }
    for (height = 0; height < image.getHeight(); height++) {
        Color color = new Color(image.getRGB(5, height));
        if (!(color.equals(Color.WHITE) || color.equals(Color.YELLOW) || color.equals(Color.ORANGE)
                || color.equals(Color.GREEN) || color.equals(Color.RED))) {
            break;
        }
    }
    return new Dimension(width, height);
}

From source file:com.kahlon.guard.controller.PersonImageManager.java

/**
 * Upload person image file//from   w  w  w  .  j a  v a  2 s . co  m
 *
 * @param event
 * @throws java.io.IOException
 */
public void onUpload(FileUploadEvent event) throws IOException {
    photo = getRandomImageName();
    byte[] data = IOUtils.toByteArray(event.getFile().getInputstream());

    ServletContext servletContext = (ServletContext) FacesContext.getCurrentInstance().getExternalContext()
            .getContext();
    String newFileName = servletContext.getRealPath("") + File.separator + "resources" + File.separator
            + "image" + File.separator + "temp" + File.separator + photo + ".png";
    if (fileNames == null) {
        fileNames = new ArrayList<>();
    }
    fileNames.add(newFileName);

    FileImageOutputStream imageOutput;
    try {
        imageOutput = new FileImageOutputStream(new File(newFileName));
        imageOutput.write(data, 0, data.length);
        imageOutput.close();

        BufferedImage originalImage = ImageIO.read(new File(newFileName));
        int type = originalImage.getType() == 0 ? BufferedImage.TYPE_INT_ARGB : originalImage.getType();

        BufferedImage resizeImagePng = resizeImageWithHint(originalImage, type);
        ImageIO.write(resizeImagePng, "png", new File(newFileName));

    } catch (Exception e) {
        throw new FacesException("Error in writing captured image.");
    }
    FacesMessage msg = new FacesMessage("Success! ", event.getFile().getFileName() + " is uploaded.");
    FacesContext.getCurrentInstance().addMessage(null, msg);
    imageUpload = false;
}