Question, as I am dealing with a similar issue, except I save my file
to my glassfish directory (ie: glassfish/domains/domain1/uploads/
Videos/...). I can't seem to find the url though I have tried many
different types of urls...
For the record
((WebApplication
)WebApplication
.get()).getServletContext().getRealPath(newFile.getCanonicalPath())
returns:
/Users/msj121/NetBeansProjects/WebBuilder/dist/gfdeploy/WebBuilder/
WebBuilder-war_war/Applications/Programs/NetBeans/sges-v3/glassfish/
domains/domain1/uploads/Videos/...
btw, for those using Glassfish you can have urls to physical hard
drive space even not in the context root by using an alternatedocroot
(ie: "alternatedocroot_1 from=/uploads/* dir=/").
I assume my directory is in the context root and I should be able to
find it, no?
On 29-Jan-10, at 12:47 AM, Ernesto Reinaldo Barreiro wrote:
Hi Riyad,
I didn't get offended by your message... which otherwise raised a
very valid
issue.
Cheers,
Ernesto
On Thu, Jan 28, 2010 at 5:26 PM, Riyad Kalla <[email protected]> wrote:
Ernesto,
Sorry about that -- I didn't mean to imply your impl was back, that
was
more
directed at Francois along the lines of "that's a lot of overhead,
are you
sure you need to do that?" -- but now that I understand what his
use-case
is
(saw his last reply about /usr/ext/img/<IMAGES HERE>) I get it. I was
thinking they were under /webapp/images.
I'll go back to sitting in my corner ;)
-R
On Wed, Jan 27, 2010 at 9:54 PM, Ernesto Reinaldo Barreiro <
[email protected]> wrote:
Sure it is overhead but he wanted to serve images from a folder not
under application
context root directory... Then, you have to serve them somehow? The
options
I see are
1-A dedicated servlet?
2-With Wicket... and thats what the code shows... and for sure it
can be
done in a simpler way...
A would try to use 1. As then Wicket would not have to serve the
images.
Regards,
Ernesto
On Wed, Jan 27, 2010 at 9:43 PM, Riyad Kalla <[email protected]>
wrote:
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 <
[email protected]> 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 ([email protected])
*
*/
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 ([email protected])
*
*/
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 <[email protected]>
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<[email protected]>:
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
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