public class ProductEntity {
    private Long id;
    private Integer categoryId;
    private Long price;
    private String productName;
    private String productDescription;
    private Byte isActive;
    private Integer manufacturerCountryId;
    private byte[] image; //image in bytes
    private CategoryEntity category;
    private ManufacturerCountryEntity manufacturerCountry;
   
    //getter@setter
}

                                    <p class="product-image">
                                        <a href="/imageDisplay?id=#{product.id}"
                                           rel="" title="${product.productName}" id="zoom1" class="cloud-zoom">
                                            <img src="/ShowImage?id=#{product.id}" width="300" height="300"
                                                 alt="{product.productName}" title="${product.productName}"/> </a>

                                        <a id="zoom-btn" class="lightbox-group zoom-btn-small"
                                           href="/imageDisplay?id=?#{product.id}"
                                           title="#{product.productName}">Zoom</a>
                                    </p>

    @RequestMapping(value = "/imageDisplay", method = RequestMethod.GET)
    public void showImage(@RequestParam("id") Long itemId, HttpServletResponse response,HttpServletRequest request)
            throws ServletException, IOException {

        System.out.println(itemId);
        ProductEntity product = productService.getProductById(itemId);
        System.out.println(itemId);
        response.setContentType("image/jpeg, image/jpg, image/png, image/gif");

        response.getOutputStream().write(product.getImage());

        response.getOutputStream().close();

    }

    protected void processRequest(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {

        response.setContentType("image/jpeg");
        OutputStream out = response.getOutputStream();
        try {
            long id = Integer.valueOf(request.getParameter("id"));
            ImageService imageService = (ImageService) getServletContext().getAttribute("imageService");
            byte[] image = imageService.getImage(id);

            InputStream in = new ByteArrayInputStream(image);
            BufferedImage bufferedImage = ImageIO.read(in);
            ImageIO.write(bufferedImage, "jpg", out);
            bufferedImage.flush();
//            response.setContentLength(image.length);
//            out.write(image);
        } catch (Exception ex) {
            ex.printStackTrace();
        } finally {
            out.close();
        }
    }

                                        <script type="text/javascript">
                                        jQuery(function ($) {

                                            $(".lightbox-group").colorbox({
                                                rel: 'lightbox-group',
                                                opacity: 0.5,
                                                speed: 300
                                            });
                                            $(".cloud-zoom-gallery").first().removeClass("cboxElement");
                                            $(".cloud-zoom-gallery").click(function () {
                                                $("#zoom-btn").attr('href', $(this).attr('href'));
                                                $("#zoom-btn").attr('title', $(this).attr('title'));

                                                $(".cloud-zoom-gallery").each(function () {
                                                    $(this).addClass("cboxElement");
                                                });
                                                $(this).removeClass("cboxElement");
                                            });

                                        });

                                        jQuery(function ($) {
                                            var t;
                                            $(window).resize(function () {
                                                clearTimeout(t);
                                                t = setTimeout(function () {
                                                    $(".cloud-zoom-gallery").first().click();
                                                }, 200);
                                            });
                                        });

                                        </script>