This seems like adding a large amount of overhead to an image-heavy site
(e.g. image blog or something), I thought I read in Wicket in Action that
WicketFilter ignored HTTP requests for non-wicket resources now and passed
them through to the underlying server to handle avoiding the need to remap
your wicket URLs to something like /app/* so you could have /images and
other resources under root and not have them go through the filter.
Is this not the case?
On Wed, Jan 27, 2010 at 1:38 PM, Ernesto Reinaldo Barreiro <
reier...@gmail.com> wrote:
> Hi Francois,
>
> Following example works.....
>
> 1-Create this class anywhere you want need.
>
> package com.antilia.demo.manager.img;
>
> import java.io.ByteArrayOutputStream;
> import java.io.File;
> import java.io.FileInputStream;
> import java.io.IOException;
> import java.io.InputStream;
> import java.io.OutputStream;
>
> import org.apache.wicket.AttributeModifier;
> import org.apache.wicket.markup.html.image.Image;
> import org.apache.wicket.markup.html.image.resource.DynamicImageResource;
> import org.apache.wicket.model.Model;
> import org.apache.wicket.protocol.http.WebApplication;
> import org.apache.wicket.protocol.http.WebRequestCycle;
> import org.apache.wicket.util.file.Folder;
>
> /**
> *
> * @author Ernesto Reinaldo Barreiro (reier...@gmail.com)
> *
> */
> public abstract class MountedImageFactory {
>
>
> static int BUFFER_SIZE = 10*1024;
> /**
> * Copies one stream into the other..
> * @param is source Stream
> * @param os destination Stream
> * */
> static public void copy(InputStream is, OutputStream os) throws IOException
> {
> byte[] buf = new byte[BUFFER_SIZE];
> while (true) {
> int tam = is.read(buf);
> if (tam == -1) {
> return;
> }
> os.write(buf, 0, tam);
> }
> }
> public static byte[] bytes(InputStream is) throws IOException {
> ByteArrayOutputStream out = new ByteArrayOutputStream();
> copy(is, out);
> return out.toByteArray();
> }
> private static ImageFromFolderWebResource dynamicResource;
> private static class ImageFromFolderWebResource extends
> DynamicImageResource {
> private static final long serialVersionUID = 1L;
>
> private File folder;
> public ImageFromFolderWebResource(File folder, String mountPoint) {
> this.folder = folder;
> WebApplication.get().getSharedResources().add(mountPoint, this);
> WebApplication.get().mountSharedResource(mountPoint,
> "org.apache.wicket.Application/"+mountPoint);
> }
> @Override
> protected byte[] getImageData() {
> try {
> String name = WebRequestCycle.get().getRequest().getParameter("name");
> return bytes(new FileInputStream(new File(getFolder().getAbsolutePath() +
> System.getProperty("file.separator")+(name))));
> } catch (Exception e) {
> //TODO: do this properly
> return null;
> }
> }
>
> public File getFolder() {
> return folder;
> }
> }
> /**
> * @return Folder from where images will be retrieved.
> */
> protected abstract Folder getFolder();
> /**
> * @return the URL to mount the dynamic WEB resource.e.g.
> */
> protected abstract String getMountPoint();
> public Image createImage(String id, final String imageName) {
> if(dynamicResource == null)
> dynamicResource = new ImageFromFolderWebResource(getFolder(),
> getMountPoint());
> return new Image(id) {
> private static final long serialVersionUID = 1L;
>
> @Override
> protected void onBeforeRender() {
> String path = WebRequestCycle.get().getRequest().getURL();
> path = path.substring(0, path.indexOf('/'));
> add(new AttributeModifier("src",true, new
> Model<String>("/"+path+"/"+getMountPoint()+"?name="+imageName)));
> super.onBeforeRender();
> }
> };
> }
> }
>
> 2- Create a test page.
>
> import org.apache.wicket.markup.html.WebPage;
> import org.apache.wicket.markup.html.image.Image;
> import org.apache.wicket.util.file.Folder;
>
> /**
> * @author Ernesto Reinaldo Barreiro (reier...@gmail.com)
> *
> */
> public class TestPage extends WebPage {
>
> private static final MountedImageFactory IMAGE_FACTORY = new
> MountedImageFactory() {
> @Override
> protected Folder getFolder() {
> return new Folder("C:/temp/images");
> }
> @Override
> protected String getMountPoint() {
> return "test";
> }
> };
> /**
> *
> */
> public TestPage() {
> Image img = IMAGE_FACTORY.createImage("img", "test.png");
> add(img);
> }
> }
>
> and the HTML markup
>
> <html xmlns:wicket="org.apache.wicket">
> <head></head>
> <body>
> <img wicket:id="img" alt="Test"/>
> </body>
> </html>
>
> 3- If you place a "test.png" on your "C:/temp/images" then you should be
> able to see the image when you hit the page.
>
> Hope you can adapt this to your needs?
>
> Regards,
>
> Ernesto
>
> 2010/1/27 François Meillet <fm...@meillet.com>
>
> > Thank for yours posts.
> > I try the solutions, but I can't figure out how to serve images as
> static
> > images.
> > F.
> >
> > Le 27 janv. 2010 à 16:10, Thomas Kappler a écrit :
> >
> > > On 01/27/10 15:57, Jonas wrote:
> > >> Have you tried the following:
> > >>
> > >> WebComponent image = new WebComponent("someWicketId");
> > >> image.add(new SimpleAttributeModifier("src", "http://.....jpg";));
> > >> add(image);
> > >>
> > >> with markup
> > >>
> > >> <img wicket:id="someWicketId" />
> > >>
> > >>
> > >> that should work just fine...
> > >>
> > >> if you cannot hardcode the image url, you can use the following
> > >> instead of SimpleAttributeModifier
> > >> image.add(new AttributeModifier("src", true new
> > >> AbstractReadOnlyModel<String>() {
> > >> public String getObject() {
> > >> String url = ... (fetch the image url from anywhere else)
> > >> // e.g. '/xxx/yyyy/image893748.png'
> > >> return url;
> > >> }
> > >> ));
> > >
> > > Or, maybe a bit nicer, encapsulate it into a component and let the URI
> > come from a Model, as usual in Wicket:
> > >
> > > class ExternalImageUri
> > > extends WebComponent
> > > {
> > > public ExternalImageUri(String id, IModel<String> uri)
> > > {
> > > super(id, uri);
> > > add(new AttributeModifier("src", true, uri));
> > > }
> > >
> > > @Override
> > > protected void onComponentTag(ComponentTag tag)
> > > {
> > > super.onComponentTag(tag);
> > > checkComponentTag(tag, "img");
> > > }
> > > }
> > >
> > >
> > > This in the Wiki at
> > http://cwiki.apache.org/WICKET/how-to-load-an-external-image.html.
> > >
> > >
> > > -- Thomas
> > >
> > >
> > >> 2010/1/27 François Meillet<fm...@meillet.com>:
> > >>> Hi Wicketers,
> > >>>
> > >>> I have a directory, /xxx/images with uploaded images, which is not
> > under the application context root directory.
> > >>> How can I serve them as static images ?
> > >>>
> > >>> I tried the StaticImage class I found in the forum (
> > http://old.nabble.com/Plain-IMG-src-urls-td21547371.html#a21547543 )
> > >>> but it doesn't work for me. It just work if the image files are under
> > the context root directory.
> > >>>
> > >>> Thanks for your help.
> > >>>
> > >>> François
> > >>>
> > >>>
> > >>>
> > >>>
> > >>> ---------------------------------------------------------------------
> > >>> To unsubscribe, e-mail: users-unsubscr...@wicket.apache.org
> > >>> For additional commands, e-mail: users-h...@wicket.apache.org
> > >>>
> > >>>
> > >>
> > >> ---------------------------------------------------------------------
> > >> To unsubscribe, e-mail: users-unsubscr...@wicket.apache.org
> > >> For additional commands, e-mail: users-h...@wicket.apache.org
> > >>
> > >
> > >
> > > --
> > > -------------------------------------------------------------------
> > > Thomas Kappler thomas.kapp...@isb-sib.ch
> > > Swiss Institute of Bioinformatics Tel: +41 22 379 51 89
> > > CMU, rue Michel Servet 1
> > > 1211 Geneve 4
> > > Switzerland http://www.uniprot.org
> > > -------------------------------------------------------------------
> > >
> > > ---------------------------------------------------------------------
> > > To unsubscribe, e-mail: users-unsubscr...@wicket.apache.org
> > > For additional commands, e-mail: users-h...@wicket.apache.org
> > >
> >
> > François Meillet
> > fm...@meillet.com
> >
> >
> >
> >
> > ---------------------------------------------------------------------
> > To unsubscribe, e-mail: users-unsubscr...@wicket.apache.org
> > For additional commands, e-mail: users-h...@wicket.apache.org
> >
> >
>
![http://.....jpg"](http://.....jpg"){kind=link}