On Tue, Nov 5, 2013 at 11:42 AM, Ladislav DANKO <[email protected]> wrote:
> I don't need to mount images "dynamicaly" (at the moment of the user
> click). For example
> I have image logo.png and it's loaded just once when app start and mounted
> at some url path. This path
> is still same, not needed to be loaded dynamicaly "when user click". For
> this
> purpose this 'mountResource("/images/logo.png", new
> PackageResourceReference(Images.class, "logo.png"))'
> works perfect. Now this image is in DB and I need to do same think. I have
> data (from DB), I have mount
> point (from DB), but can't mount on url: AppStart.get().
> getSharedResources().add(imagePath, imageData);
> Looks that wicket "somethink do" because this events about images in log:
> 127.0.0.1 - - [04/Nov/2013:23:52:09 +0100] "GET
> /images/images/headerbackground.png
> HTTP/1.1" 302 -
> 127.0.0.1 - - [04/Nov/2013:23:52:09 +0100] "GET
> /images/images/headerbackground.png?52
> HTTP/1.1" 200 9077
> 127.0.0.1 - - [04/Nov/2013:23:52:09 +0100] "GET /images/images/cz-ico.gif
> HTTP/1.1" 302 -
> 127.0.0.1 - - [04/Nov/2013:23:52:09 +0100] "GET /images/images/icon-fb.png
> HTTP/1.1" 302 -
> but don't know what's wrong with 'WebApplication.get().
> getSharedResources().add(imagePath, imageData)'
I also don't have idea what is wrong with this approach.
But I believe this approach is sub-optimal. Your read from DB at
application start time, then you put the images (byte[]) in instances of
IResource in a Map. I.e. you put some data (how much i cannot say. it
depends on how much images you have) in the heap memory for no good reason,
IMO.
The article describes how to mount a single resource that dynamically loads
the byte[] per request.
You should decide which one is better for you.
If you still prefer the shared resources approach then you can put a
breakpoint in SharedResource to see that your ComponentDynamicImage are
properly resolved and their #getImageData() is called and what gets wrong.
>
>
>
>
> On 5.11.2013 10:24, Martin Grigorov wrote:
>
>> On Tue, Nov 5, 2013 at 11:19 AM, Ladislav DANKO <[email protected]> wrote:
>>
>> Martin, thank, I have read it (have the book), but don't find any info
>>> why
>>> this:
>>>
>>>
>> I am not sure we talk about the same thing.
>> The blog article is not related to any book. And additionally it shows how
>> to load images from DB dynamically. It doesn't use shared resources
>> though.
>> All you have to do is to mount a resource reference that listens at
>> "/images/${imageName}" and then put <img src="/images/logo.png"/> in your
>> .html.
>>
>>
>> AppStart.get().getSharedResources().add(imagePath, imageData);
>>> from my code below not working.
>>>
>>> Guess that example is for dynamicly loaded images but my example is for
>>> static
>>> images in database (website logo etc) not for dynamic loaded images.
>>> Originaly I have done it in this way:
>>> mountResource("/images/logo.png", new PackageResourceReference(
>>> Images.class,
>>> "logo.png"));
>>> and it works smoothly. Now I moved images into database and looking for
>>> way how to serve them.
>>> In fact, I have image data but not know hot to mount this data into
>>> defined path:
>>> AppStart.get().getSharedResources().add(imagePath, imageData)
>>>
>>>
>>>
>>>
>>> On 5.11.2013 9:59, Martin Grigorov wrote:
>>>
>>> Hi,
>>>>
>>>> Check http://wicketinaction.com/2011/07/wicket-1-5-mounting-resources/
>>>>
>>>>
>>>> On Tue, Nov 5, 2013 at 10:49 AM, Ladislav DANKO <[email protected]> wrote:
>>>>
>>>> Hi folks!
>>>>
>>>>>
>>>>> I'm using wicket 1.5.10, tomcat 7 and Java 6. In my code i do:
>>>>> public final class Images{
>>>>> public static void mountGlobalStaticImages(){
>>>>> //loading images from database works perfect
>>>>> List<Object> imagesParams = GlobalTemplatesDAO.
>>>>> getGlobalImages();
>>>>> for(Object record : imagesParams){
>>>>> Map<String, Object> image = (Map<String, Object>) record;
>>>>> //it's path like '/images/mylogo.png'
>>>>> String imagePath = (String) image.get("file_mount_point");
>>>>> //ComponentDynamicImage is extended DynamicImageResource,
>>>>> looks it
>>>>> works (it provides required byte[] data)
>>>>> ComponentDynamicImage imageData = new
>>>>> ComponentDynamicImage((byte[])
>>>>> image.get("file_data"));
>>>>> //problem is here: looks that it mount image isn't in app and
>>>>> in
>>>>> log
>>>>> is http status code '302'
>>>>> //AppStart is extended WebApplication class
>>>>> AppStart.get().getSharedResources().add(imagePath, imageData);
>>>>> }
>>>>> }
>>>>> }
>>>>>
>>>>> Problem is that images isn't here, in localhost_access_log.2013-11-
>>>>> 04.txt
>>>>> are lines:
>>>>> 127.0.0.1 - - [04/Nov/2013:23:52:09 +0100] "GET
>>>>> /images/images/icon-fb.png
>>>>> HTTP/1.1" 302 -
>>>>> 127.0.0.1 - - [04/Nov/2013:23:52:09 +0100] "GET
>>>>> /images/images/cz-ico.gif?53 HTTP/1.1" 200 9067
>>>>> 127.0.0.1 - - [04/Nov/2013:23:52:09 +0100] "GET
>>>>> /images/images/icon-fb.png?54 HTTP/1.1" 200 9068
>>>>> 127.0.0.1 - - [04/Nov/2013:23:52:09 +0100] "GET
>>>>> /images/images/en-ico.gif
>>>>> HTTP/1.1" 302 -
>>>>> 127.0.0.1 - - [04/Nov/2013:23:52:09 +0100] "GET
>>>>> /images/images/en-ico.gif?55 HTTP/1.1" 200 9067
>>>>>
>>>>> How to mount them properly? As far as i know problem is in
>>>>> 'AppStart.get().
>>>>> getSharedResources().add(imagePath, imageData)'
>>>>> but not know how to do it properly.
>>>>>
>>>>> --
>>>>> Ladislav DANKO
>>>>>
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>>>>>
>>>>>
>>>>>
>>>>>
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>>>
>>>
>>
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