Re: Bookmarkable images from db
Hi,
Actually there is a clean and easy Wicket way to do this.
No servlets, no URL hand writing.
It is achieved by using a shared resource with parameters as mentioned
above.
I have described it
http://dotev.blogspot.com/2009/11/serving-images-and-other-resources-with.html
here .
Best regards,
Peter
Juan Pablo Picasso wrote:
Hi, I've implemented this by mounting a bookmarkable page and writing into
the response. I've imagine this bypasses some useful wicket features, but
was the only way I use bookmarkable urls like /image/someImageName for
mapping user uploaded images:
#Application
this.mount(new IndexedParamUrlCodingStrategy(/image, ImagePage.class));
#ImagePage class
public class ImagePage extends WebPage {
private static Logger logger =
LoggerFactory.getLogger(ImagePage.class);
@Override
protected void onRender(MarkupStream markupStream) {
String imageName = (String)
this.getRequest().getParameterMap().get(0);
byte[] fileContents = PersistenceFacade.readFile(imageName);
try {
this.getResponse().getOutputStream().write(fileContents);
} catch (IOException e) {
logger.error(Could not write image [ + imageName + ]
into
the response, e);
}
}
}
}
Any suggestions are welcome,
regards!
Juan
On Mon, Nov 2, 2009 at 3:00 PM, Alex Objelean
alex_objel...@yahoo.comwrote:
Exactly. You can see the example posted by Vytautas Racelis earlier at
this
link:
http://xaloon.googlecode.com/svn/trunk/xaloon-wicket-repository/src/main/java/org/xaloon/wicket/component/resource/ImageLink.java
I prefer to do it this way:
http://pastebin.com/m328e21ff
The first example allow you to use directly an Image component, while the
second allows you to build the url of any resource by name..
Alex Objelean
Peter Dotchev wrote:
Hi Alex,
I check SharedResources, but as I understand it I would have to add
there
a Resource object for each image.
After checking again the javadoc there might be another way.
Display each image with Image constructor that takes ValueMap and
provide
there some image identification.
Add a single Resource object for all images and from
getResourceStream()
implementation to call getParameters() which will return the same
parameters passed to Image constructor and tell me which image to
return.
Will this work?
Best regards,
Petar
Alexandru Objelean wrote:
Besides the servlet, there is also a wicket way of do it:
- Use shared resource, which is stateless and bookmarkable
If you need more informations about this approach, search on forum or
just ask... and I'll provide you with some examples of how I do it..
Alex Objelean
Peter Dotchev wrote:
Hi,
My app allows users to upload images and I store them in JCR
http://en.wikipedia.org/wiki/Content_repository_API_for_Java. I can
get InputStream for each one of them.
I want to display images in specific pages and I want image URLs to
be
stable/bookmarkable. Also I don't want these pages to use the session
in
any way.
I checked again chapter 9 about images from Wicket In Action but such
use case is not addressed there.
I found that SharedResources allows for stable URLs, but I cannot
register each individual image.
What approach would you suggest?
Best regards,
Peter
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Re: Bookmarkable images from db
Hi, I've implemented this by mounting a bookmarkable page and writing into
the response. I've imagine this bypasses some useful wicket features, but
was the only way I use bookmarkable urls like /image/someImageName for
mapping user uploaded images:
#Application
this.mount(new IndexedParamUrlCodingStrategy(/image, ImagePage.class));
#ImagePage class
public class ImagePage extends WebPage {
private static Logger logger = LoggerFactory.getLogger(ImagePage.class);
@Override
protected void onRender(MarkupStream markupStream) {
String imageName = (String)
this.getRequest().getParameterMap().get(0);
byte[] fileContents = PersistenceFacade.readFile(imageName);
try {
this.getResponse().getOutputStream().write(fileContents);
} catch (IOException e) {
logger.error(Could not write image [ + imageName + ] into
the response, e);
}
}
}
}
Any suggestions are welcome,
regards!
Juan
On Mon, Nov 2, 2009 at 3:00 PM, Alex Objelean alex_objel...@yahoo.comwrote:
Exactly. You can see the example posted by Vytautas Racelis earlier at this
link:
http://xaloon.googlecode.com/svn/trunk/xaloon-wicket-repository/src/main/java/org/xaloon/wicket/component/resource/ImageLink.java
I prefer to do it this way:
http://pastebin.com/m328e21ff
The first example allow you to use directly an Image component, while the
second allows you to build the url of any resource by name..
Alex Objelean
Peter Dotchev wrote:
Hi Alex,
I check SharedResources, but as I understand it I would have to add there
a Resource object for each image.
After checking again the javadoc there might be another way.
Display each image with Image constructor that takes ValueMap and provide
there some image identification.
Add a single Resource object for all images and from getResourceStream()
implementation to call getParameters() which will return the same
parameters passed to Image constructor and tell me which image to return.
Will this work?
Best regards,
Petar
Alexandru Objelean wrote:
Besides the servlet, there is also a wicket way of do it:
- Use shared resource, which is stateless and bookmarkable
If you need more informations about this approach, search on forum or
just ask... and I'll provide you with some examples of how I do it..
Alex Objelean
Peter Dotchev wrote:
Hi,
My app allows users to upload images and I store them in JCR
http://en.wikipedia.org/wiki/Content_repository_API_for_Java. I can
get InputStream for each one of them.
I want to display images in specific pages and I want image URLs to be
stable/bookmarkable. Also I don't want these pages to use the session
in
any way.
I checked again chapter 9 about images from Wicket In Action but such
use case is not addressed there.
I found that SharedResources allows for stable URLs, but I cannot
register each individual image.
What approach would you suggest?
Best regards,
Peter
--
View this message in context:
http://old.nabble.com/Bookmarkable-images-from-db-tp26154577p26157757.html
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Re: Bookmarkable images from db
Hi Alex, I check SharedResources, but as I understand it I would have to add there a Resource object for each image. After checking again the javadoc there might be another way. Display each image with Image constructor that takes ValueMap and provide there some image identification. Add a single Resource object for all images and from getResourceStream() implementation to call getParameters() which will return the same parameters passed to Image constructor and tell me which image to return. Will this work? Best regards, Petar Alexandru Objelean wrote: Besides the servlet, there is also a wicket way of do it: - Use shared resource, which is stateless and bookmarkable If you need more informations about this approach, search on forum or just ask... and I'll provide you with some examples of how I do it.. Alex Objelean Peter Dotchev wrote: Hi, My app allows users to upload images and I store them in JCR http://en.wikipedia.org/wiki/Content_repository_API_for_Java. I can get InputStream for each one of them. I want to display images in specific pages and I want image URLs to be stable/bookmarkable. Also I don't want these pages to use the session in any way. I checked again chapter 9 about images from Wicket In Action but such use case is not addressed there. I found that SharedResources allows for stable URLs, but I cannot register each individual image. What approach would you suggest? Best regards, Peter -- View this message in context: http://old.nabble.com/Bookmarkable-images-from-db-tp26154577p26157711.html Sent from the Wicket - User mailing list archive at Nabble.com. - To unsubscribe, e-mail: users-unsubscr...@wicket.apache.org For additional commands, e-mail: users-h...@wicket.apache.org
Re: Bookmarkable images from db
Just write a servlet (or Spring Web MVC handler). On Mon, Nov 2, 2009 at 10:52 AM, Peter Dotchev dotc...@gmail.com wrote: Hi Alex, I check SharedResources, but as I understand it I would have to add there a Resource object for each image. After checking again the javadoc there might be another way. Display each image with Image constructor that takes ValueMap and provide there some image identification. Add a single Resource object for all images and from getResourceStream() implementation to call getParameters() which will return the same parameters passed to Image constructor and tell me which image to return. Will this work? Best regards, Petar Alexandru Objelean wrote: Besides the servlet, there is also a wicket way of do it: - Use shared resource, which is stateless and bookmarkable If you need more informations about this approach, search on forum or just ask... and I'll provide you with some examples of how I do it.. Alex Objelean Peter Dotchev wrote: Hi, My app allows users to upload images and I store them in JCR http://en.wikipedia.org/wiki/Content_repository_API_for_Java. I can get InputStream for each one of them. I want to display images in specific pages and I want image URLs to be stable/bookmarkable. Also I don't want these pages to use the session in any way. I checked again chapter 9 about images from Wicket In Action but such use case is not addressed there. I found that SharedResources allows for stable URLs, but I cannot register each individual image. What approach would you suggest? Best regards, Peter -- View this message in context: http://old.nabble.com/Bookmarkable-images-from-db-tp26154577p26157711.html Sent from the Wicket - User mailing list archive at Nabble.com. - 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
Re: Bookmarkable images from db
Exactly. You can see the example posted by Vytautas Racelis earlier at this link: http://xaloon.googlecode.com/svn/trunk/xaloon-wicket-repository/src/main/java/org/xaloon/wicket/component/resource/ImageLink.java I prefer to do it this way: http://pastebin.com/m328e21ff The first example allow you to use directly an Image component, while the second allows you to build the url of any resource by name.. Alex Objelean Peter Dotchev wrote: Hi Alex, I check SharedResources, but as I understand it I would have to add there a Resource object for each image. After checking again the javadoc there might be another way. Display each image with Image constructor that takes ValueMap and provide there some image identification. Add a single Resource object for all images and from getResourceStream() implementation to call getParameters() which will return the same parameters passed to Image constructor and tell me which image to return. Will this work? Best regards, Petar Alexandru Objelean wrote: Besides the servlet, there is also a wicket way of do it: - Use shared resource, which is stateless and bookmarkable If you need more informations about this approach, search on forum or just ask... and I'll provide you with some examples of how I do it.. Alex Objelean Peter Dotchev wrote: Hi, My app allows users to upload images and I store them in JCR http://en.wikipedia.org/wiki/Content_repository_API_for_Java. I can get InputStream for each one of them. I want to display images in specific pages and I want image URLs to be stable/bookmarkable. Also I don't want these pages to use the session in any way. I checked again chapter 9 about images from Wicket In Action but such use case is not addressed there. I found that SharedResources allows for stable URLs, but I cannot register each individual image. What approach would you suggest? Best regards, Peter -- View this message in context: http://old.nabble.com/Bookmarkable-images-from-db-tp26154577p26157757.html Sent from the Wicket - User mailing list archive at Nabble.com. - To unsubscribe, e-mail: users-unsubscr...@wicket.apache.org For additional commands, e-mail: users-h...@wicket.apache.org
Re: Bookmarkable images from db
i would write a servlet. -igor On Sun, Nov 1, 2009 at 1:41 PM, Peter Dotchev dotc...@gmail.com wrote: Hi, My app allows users to upload images and I store them in JCR http://en.wikipedia.org/wiki/Content_repository_API_for_Java. I can get InputStream for each one of them. I want to display images in specific pages and I want image URLs to be stable/bookmarkable. Also I don't want these pages to use the session in any way. I checked again chapter 9 about images from Wicket In Action but such use case is not addressed there. I found that SharedResources allows for stable URLs, but I cannot register each individual image. What approach would you suggest? Best regards, Peter - To unsubscribe, e-mail: users-unsubscr...@wicket.apache.org For additional commands, e-mail: users-h...@wicket.apache.org
Re: Bookmarkable images from db
Besides the servlet, there is also a wicket way of do it: - Use shared resource, which is stateless and bookmarkable If you need more informations about this approach, search on forum or just ask... and I'll provide you with some examples of how I do it.. Alex Objelean Peter Dotchev wrote: Hi, My app allows users to upload images and I store them in JCR http://en.wikipedia.org/wiki/Content_repository_API_for_Java. I can get InputStream for each one of them. I want to display images in specific pages and I want image URLs to be stable/bookmarkable. Also I don't want these pages to use the session in any way. I checked again chapter 9 about images from Wicket In Action but such use case is not addressed there. I found that SharedResources allows for stable URLs, but I cannot register each individual image. What approach would you suggest? Best regards, Peter -- View this message in context: http://old.nabble.com/Bookmarkable-images-from-db-tp26154577p26154636.html Sent from the Wicket - User mailing list archive at Nabble.com. - To unsubscribe, e-mail: users-unsubscr...@wicket.apache.org For additional commands, e-mail: users-h...@wicket.apache.org
Re: Bookmarkable images from db
Hi, you may find this class useful for your requirements: http://xaloon.googlecode.com/svn/trunk/xaloon-wicket-repository/src/main/java/org/xaloon/wicket/component/resource/ImageLink.java This class takes image from JCR and shows as image. Peter Dotchev wrote: Hi, My app allows users to upload images and I store them in JCR http://en.wikipedia.org/wiki/Content_repository_API_for_Java. I can get InputStream for each one of them. I want to display images in specific pages and I want image URLs to be stable/bookmarkable. Also I don't want these pages to use the session in any way. I checked again chapter 9 about images from Wicket In Action but such use case is not addressed there. I found that SharedResources allows for stable URLs, but I cannot register each individual image. What approach would you suggest? Best regards, Peter -- Regards, Vytautas Racelis --- phone:+370-600-34389 e-mail: turi...@gmail.com www.xaloon.org www.leenle.com - To unsubscribe, e-mail: users-unsubscr...@wicket.apache.org For additional commands, e-mail: users-h...@wicket.apache.org
