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Posted to users@wicket.apache.org by "V. Jenks" <za...@gmail.com> on 2008/06/25 16:59:20 UTC
More issues w/ external images and DynamicWebResource
I'm having non-stop issues w/ DynamicWebResource and trying to load images
external to my .ear deployment now that I've moved to 1.3. First off, I'm
hoping someone can suggest an easier way to do it because what I have now is
code that someone was nice enough to give me, here on the Wicket mailing
list. However, I don't entirely understand how it works and while it worked
for 2 years in Wicket 1.2, it is now causing me problem after problem in
Wicket 1.3.x - for whatever reason.
First what I've got is a class called ImageResource which extends
DynamicWebResource:
/*****************************************************/
public class ImageResource extends DynamicWebResource
{
private ImageService imgSrv;
public ImageResource()
{
super();
imgSrv = new ImageServiceEngine();
}
public String getImage(String image)
{
String retImg = null;
try
{
retImg = imgSrv.getImage(image).toString();
}
catch (IOException exp)
{
LogProxy.saveEntry(exp);
}
return retImg;
}
protected ResourceState getResourceState()
{
ImageResourceState state = null;
try
{
ValueMap params = getParameters();
byte[] data = null;
String imageId = params.getString("file");
//Date lastModified = getImageLastMod(imageId);
state = new ImageResourceState(Time.valueOf(new Date()));
state.setContentType("image/jpeg");
//SECURITY PRECAUTION - DO NOT ALLOW ANYTHING BUT IMAGES!
if (imageId.contains(PropertyProxy.getExternalImagesRoot()) ||
imageId.contains(PropertyProxy.getExternalImagesAltRoot()))
{
data = imgSrv.getImage(imageId);
}
else
{
//change image to "not found" warning image
data = imgSrv.getImage(PropertyProxy.getImageNotFound());
//TODO: send email to notify of inappropriate access
}
state.setData(data);
}
catch (FileNotFoundException exp)
{
LogProxy.saveEntry(exp);
}
catch (IOException exp)
{
LogProxy.saveEntry(exp);
}
catch (NullPointerException exp)
{
LogProxy.saveEntry(exp);
}
return state;
}
/**
*
* @author vjenks
*
*/
protected class ImageResourceState extends ResourceState
{
private String contentType;
private byte[] data;
private Time lastModified;
ImageResourceState(Time lastModified)
{
super();
this.lastModified = lastModified;
}
public String getContentType()
{
return contentType;
}
void setContentType(String contentType)
{
this.contentType = contentType;
}
public byte[] getData()
{
return data;
}
void setData(byte[] data)
{
this.data = data;
}
public int getLength()
{
if (data != null)
return data.length;
else
return 0;
}
public Time lastModifiedTime()
{
return lastModified;
}
}
}
/*****************************************************/
You can see that it uses a class called ImageServiceEngine:
/*****************************************************/
public class ImageServiceEngine implements ImageService, Serializable
{
private int thumbnailSize;
public ImageServiceEngine()
{
super();
}
public int getThumbnailSize()
{
return this.thumbnailSize;
}
public void setThumbnailSize(int size)
{
this.thumbnailSize = size;
}
public byte[] getImage(String image) throws IOException
{
// Open the file, then read it in.
ByteArrayOutputStream outStream = new ByteArrayOutputStream();
InputStream inStream = new FileInputStream(new File(image));
copy(inStream, outStream);
inStream.close();
outStream.close();
return outStream.toByteArray();
}
public Date getLastModifyTime(String image)
{
File f = new File(image);
return new Date(f.lastModified());
}
/* Spring Injected */
private File imageDir;
public void setImageDir(String dirName)
{
imageDir = new File(dirName);
}
public byte[] getThumbnail(String image) throws IOException
{
// Open the file, then read it in.
ByteArrayOutputStream outStream = new ByteArrayOutputStream();
InputStream inStream = new FileInputStream(new File(image));
copy(inStream, outStream);
inStream.close();
outStream.close();
return outStream.toByteArray();
}
/**
* Copies data from src into dst.
*/
private void copy(InputStream source, OutputStream destination)
throws IOException
{
try
{
// Transfer bytes from source to destination
byte[] buf = new byte[1024];
int len;
while ((len = source.read(buf)) > 0)
{
destination.write(buf, 0, len);
}
source.close();
destination.close();
}
catch (IOException ioe)
{
throw ioe;
}
}
private File createImageFile(String image)
{
File file = new File(imageDir, image);
return file;
}
/** @see ImageService#save(ImageEntry) */
public void save(String image, InputStream imageStream)
throws IOException
{
// Read in the image data.
ByteArrayOutputStream baos = new ByteArrayOutputStream();
copy(imageStream, baos);
baos.close();
byte[] imageData = baos.toByteArray();
baos = null;
// Create a unique name for the file in the image directory and
// write the image data into it.
File newFile = createImageFile(image);
OutputStream outStream = new FileOutputStream(newFile);
outStream.write(imageData);
outStream.close();
}
}
/*****************************************************/
ImageResource is setup in init() in the App class like so:
/*****************************************************/
public void init()
{
//create external images resource
getSharedResources().add("imageResource", new ImageResource());
}
/*****************************************************/
Now, if there's a nicer, cleaner, more simple way of loading external
images, I'd really appreciate some suggestions.
As for what is now broken, it seems to have something to do w/ the fact that
the Wicket Filter is looking at "/*" to find the application because if I
use this URL to view an image via my "imageResource" like so:
http://localhost/MyApp/resources/wicket.Application/imageResource?file=C:\\Images\\assets\\images\\newsletter\\test_bkg.jpg
...I get a 404 not found. This worked fine when my URL had an alias in
Wicket 1.2, i.e. "/products" instead of the "/*" that is used now. If I use
"/products" in the URL above, as I would have prior to 1.3 (since I have it
listed as a mountable URL in the app class) - it throws an exception saying
"java.lang.IllegalStateException: URL fragment has unmatched key/value pair:
resources/wicket.Application/imageResource"
So, I need help in both areas....one, making this easier, if possible. And,
most importantly - being able to restore production and be able to view
external images ASAP.
Thanks very much in advance!
--
View this message in context: http://www.nabble.com/More-issues-w--external-images-and-DynamicWebResource-tp18114584p18114584.html
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---------------------------------------------------------------------
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Re: More issues w/ external images and DynamicWebResource
Posted by Igor Vaynberg <ig...@gmail.com>.
you can always create a very simple ServletImage component that
generates the url based on the servlet mapping. imho you should always
go for the simplest solution first, and that is a simple servlet.
shared resources are great when you need to resources for reusable
components, i assume this is in your application so no need for
reusability and having to add something to web.xml isnt a problem...
-igor
On Wed, Jun 25, 2008 at 8:32 AM, V. Jenks <za...@gmail.com> wrote:
>
> Thanks Igor, I'll look into this - not something I've tried yet. I was
> hoping there'd be a short-term tweak to what I already have in place because
> there are references to that imageResource lookup URL in several spots in my
> code that I'd now have to go and swap out.
>
>
> igor.vaynberg wrote:
>>
>> why not just create a dead simple servlet that streams images? in fact
>> there are tons of them online you can just take. it is a much simpler
>> solution then dealing with wicket's resources for this particular
>> usecase.
>>
>> -igor
>>
>> On Wed, Jun 25, 2008 at 7:59 AM, V. Jenks <za...@gmail.com> wrote:
>>>
>>> I'm having non-stop issues w/ DynamicWebResource and trying to load
>>> images
>>> external to my .ear deployment now that I've moved to 1.3. First off,
>>> I'm
>>> hoping someone can suggest an easier way to do it because what I have now
>>> is
>>> code that someone was nice enough to give me, here on the Wicket mailing
>>> list. However, I don't entirely understand how it works and while it
>>> worked
>>> for 2 years in Wicket 1.2, it is now causing me problem after problem in
>>> Wicket 1.3.x - for whatever reason.
>>>
>>> First what I've got is a class called ImageResource which extends
>>> DynamicWebResource:
>>>
>>> /*****************************************************/
>>> public class ImageResource extends DynamicWebResource
>>> {
>>> private ImageService imgSrv;
>>>
>>> public ImageResource()
>>> {
>>> super();
>>> imgSrv = new ImageServiceEngine();
>>> }
>>>
>>> public String getImage(String image)
>>> {
>>> String retImg = null;
>>>
>>> try
>>> {
>>> retImg = imgSrv.getImage(image).toString();
>>> }
>>> catch (IOException exp)
>>> {
>>> LogProxy.saveEntry(exp);
>>> }
>>>
>>> return retImg;
>>> }
>>>
>>> protected ResourceState getResourceState()
>>> {
>>> ImageResourceState state = null;
>>>
>>> try
>>> {
>>> ValueMap params = getParameters();
>>>
>>> byte[] data = null;
>>> String imageId = params.getString("file");
>>>
>>> //Date lastModified = getImageLastMod(imageId);
>>> state = new ImageResourceState(Time.valueOf(new
>>> Date()));
>>> state.setContentType("image/jpeg");
>>>
>>> //SECURITY PRECAUTION - DO NOT ALLOW ANYTHING BUT
>>> IMAGES!
>>> if
>>> (imageId.contains(PropertyProxy.getExternalImagesRoot()) ||
>>>
>>> imageId.contains(PropertyProxy.getExternalImagesAltRoot()))
>>> {
>>> data = imgSrv.getImage(imageId);
>>> }
>>> else
>>> {
>>> //change image to "not found" warning
>>> image
>>> data =
>>> imgSrv.getImage(PropertyProxy.getImageNotFound());
>>>
>>> //TODO: send email to notify of
>>> inappropriate access
>>> }
>>>
>>> state.setData(data);
>>> }
>>> catch (FileNotFoundException exp)
>>> {
>>> LogProxy.saveEntry(exp);
>>> }
>>> catch (IOException exp)
>>> {
>>> LogProxy.saveEntry(exp);
>>> }
>>> catch (NullPointerException exp)
>>> {
>>> LogProxy.saveEntry(exp);
>>> }
>>>
>>> return state;
>>> }
>>>
>>> /**
>>> *
>>> * @author vjenks
>>> *
>>> */
>>> protected class ImageResourceState extends ResourceState
>>> {
>>> private String contentType;
>>> private byte[] data;
>>> private Time lastModified;
>>>
>>> ImageResourceState(Time lastModified)
>>> {
>>> super();
>>> this.lastModified = lastModified;
>>> }
>>>
>>> public String getContentType()
>>> {
>>> return contentType;
>>> }
>>>
>>> void setContentType(String contentType)
>>> {
>>> this.contentType = contentType;
>>> }
>>>
>>> public byte[] getData()
>>> {
>>> return data;
>>> }
>>>
>>> void setData(byte[] data)
>>> {
>>> this.data = data;
>>> }
>>>
>>> public int getLength()
>>> {
>>> if (data != null)
>>> return data.length;
>>> else
>>> return 0;
>>> }
>>>
>>> public Time lastModifiedTime()
>>> {
>>> return lastModified;
>>> }
>>> }
>>> }
>>> /*****************************************************/
>>>
>>>
>>> You can see that it uses a class called ImageServiceEngine:
>>>
>>> /*****************************************************/
>>> public class ImageServiceEngine implements ImageService, Serializable
>>> {
>>> private int thumbnailSize;
>>>
>>> public ImageServiceEngine()
>>> {
>>> super();
>>> }
>>>
>>> public int getThumbnailSize()
>>> {
>>> return this.thumbnailSize;
>>> }
>>>
>>> public void setThumbnailSize(int size)
>>> {
>>> this.thumbnailSize = size;
>>> }
>>>
>>> public byte[] getImage(String image) throws IOException
>>> {
>>> // Open the file, then read it in.
>>> ByteArrayOutputStream outStream = new
>>> ByteArrayOutputStream();
>>> InputStream inStream = new FileInputStream(new
>>> File(image));
>>> copy(inStream, outStream);
>>> inStream.close();
>>> outStream.close();
>>> return outStream.toByteArray();
>>> }
>>>
>>> public Date getLastModifyTime(String image)
>>> {
>>> File f = new File(image);
>>> return new Date(f.lastModified());
>>> }
>>>
>>> /* Spring Injected */
>>> private File imageDir;
>>>
>>> public void setImageDir(String dirName)
>>> {
>>> imageDir = new File(dirName);
>>> }
>>>
>>> public byte[] getThumbnail(String image) throws IOException
>>> {
>>> // Open the file, then read it in.
>>> ByteArrayOutputStream outStream = new
>>> ByteArrayOutputStream();
>>> InputStream inStream = new FileInputStream(new
>>> File(image));
>>> copy(inStream, outStream);
>>> inStream.close();
>>> outStream.close();
>>> return outStream.toByteArray();
>>> }
>>>
>>> /**
>>> * Copies data from src into dst.
>>> */
>>> private void copy(InputStream source, OutputStream destination)
>>> throws IOException
>>> {
>>> try
>>> {
>>> // Transfer bytes from source to destination
>>> byte[] buf = new byte[1024];
>>> int len;
>>> while ((len = source.read(buf)) > 0)
>>> {
>>> destination.write(buf, 0, len);
>>> }
>>> source.close();
>>> destination.close();
>>> }
>>> catch (IOException ioe)
>>> {
>>> throw ioe;
>>> }
>>> }
>>>
>>> private File createImageFile(String image)
>>> {
>>> File file = new File(imageDir, image);
>>> return file;
>>> }
>>>
>>>
>>> /** @see ImageService#save(ImageEntry) */
>>> public void save(String image, InputStream imageStream)
>>> throws IOException
>>> {
>>> // Read in the image data.
>>> ByteArrayOutputStream baos = new ByteArrayOutputStream();
>>> copy(imageStream, baos);
>>> baos.close();
>>> byte[] imageData = baos.toByteArray();
>>> baos = null;
>>>
>>> // Create a unique name for the file in the image
>>> directory and
>>> // write the image data into it.
>>> File newFile = createImageFile(image);
>>> OutputStream outStream = new FileOutputStream(newFile);
>>> outStream.write(imageData);
>>> outStream.close();
>>> }
>>> }
>>> /*****************************************************/
>>>
>>>
>>> ImageResource is setup in init() in the App class like so:
>>>
>>> /*****************************************************/
>>> public void init()
>>> {
>>> //create external images resource
>>> getSharedResources().add("imageResource", new ImageResource());
>>> }
>>> /*****************************************************/
>>>
>>> Now, if there's a nicer, cleaner, more simple way of loading external
>>> images, I'd really appreciate some suggestions.
>>>
>>> As for what is now broken, it seems to have something to do w/ the fact
>>> that
>>> the Wicket Filter is looking at "/*" to find the application because if I
>>> use this URL to view an image via my "imageResource" like so:
>>>
>>> http://localhost/MyApp/resources/wicket.Application/imageResource?file=C:\\Images\\assets\\images\\newsletter\\test_bkg.jpg
>>>
>>> ...I get a 404 not found. This worked fine when my URL had an alias in
>>> Wicket 1.2, i.e. "/products" instead of the "/*" that is used now. If I
>>> use
>>> "/products" in the URL above, as I would have prior to 1.3 (since I have
>>> it
>>> listed as a mountable URL in the app class) - it throws an exception
>>> saying
>>> "java.lang.IllegalStateException: URL fragment has unmatched key/value
>>> pair:
>>> resources/wicket.Application/imageResource"
>>>
>>> So, I need help in both areas....one, making this easier, if possible.
>>> And,
>>> most importantly - being able to restore production and be able to view
>>> external images ASAP.
>>>
>>> Thanks very much in advance!
>>> --
>>> View this message in context:
>>> http://www.nabble.com/More-issues-w--external-images-and-DynamicWebResource-tp18114584p18114584.html
>>> Sent from the Wicket - User mailing list archive at Nabble.com.
>>>
>>>
>>> ---------------------------------------------------------------------
>>> To unsubscribe, e-mail: users-unsubscribe@wicket.apache.org
>>> For additional commands, e-mail: users-help@wicket.apache.org
>>>
>>>
>>
>> ---------------------------------------------------------------------
>> To unsubscribe, e-mail: users-unsubscribe@wicket.apache.org
>> For additional commands, e-mail: users-help@wicket.apache.org
>>
>>
>>
>
> --
> View this message in context: http://www.nabble.com/More-issues-w--external-images-and-DynamicWebResource-tp18114584p18115306.html
> Sent from the Wicket - User mailing list archive at Nabble.com.
>
>
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: users-unsubscribe@wicket.apache.org
> For additional commands, e-mail: users-help@wicket.apache.org
>
>
---------------------------------------------------------------------
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For additional commands, e-mail: users-help@wicket.apache.org
Re: More issues w/ external images and DynamicWebResource
Posted by Nino Saturnino Martinez Vazquez Wael <ni...@jayway.dk>.
I believe there was a post on this not too many weeks ago, you can use
nabble to search for it. Something about serving images or something
along those lines...
ps I didnt realize that the source you posted were the same...Was a
quick mail..
V. Jenks wrote:
> Thanks Igor, I'll look into this - not something I've tried yet. I was
> hoping there'd be a short-term tweak to what I already have in place because
> there are references to that imageResource lookup URL in several spots in my
> code that I'd now have to go and swap out.
>
>
> igor.vaynberg wrote:
>
>> why not just create a dead simple servlet that streams images? in fact
>> there are tons of them online you can just take. it is a much simpler
>> solution then dealing with wicket's resources for this particular
>> usecase.
>>
>> -igor
>>
>> On Wed, Jun 25, 2008 at 7:59 AM, V. Jenks <za...@gmail.com> wrote:
>>
>>> I'm having non-stop issues w/ DynamicWebResource and trying to load
>>> images
>>> external to my .ear deployment now that I've moved to 1.3. First off,
>>> I'm
>>> hoping someone can suggest an easier way to do it because what I have now
>>> is
>>> code that someone was nice enough to give me, here on the Wicket mailing
>>> list. However, I don't entirely understand how it works and while it
>>> worked
>>> for 2 years in Wicket 1.2, it is now causing me problem after problem in
>>> Wicket 1.3.x - for whatever reason.
>>>
>>> First what I've got is a class called ImageResource which extends
>>> DynamicWebResource:
>>>
>>> /*****************************************************/
>>> public class ImageResource extends DynamicWebResource
>>> {
>>> private ImageService imgSrv;
>>>
>>> public ImageResource()
>>> {
>>> super();
>>> imgSrv = new ImageServiceEngine();
>>> }
>>>
>>> public String getImage(String image)
>>> {
>>> String retImg = null;
>>>
>>> try
>>> {
>>> retImg = imgSrv.getImage(image).toString();
>>> }
>>> catch (IOException exp)
>>> {
>>> LogProxy.saveEntry(exp);
>>> }
>>>
>>> return retImg;
>>> }
>>>
>>> protected ResourceState getResourceState()
>>> {
>>> ImageResourceState state = null;
>>>
>>> try
>>> {
>>> ValueMap params = getParameters();
>>>
>>> byte[] data = null;
>>> String imageId = params.getString("file");
>>>
>>> //Date lastModified = getImageLastMod(imageId);
>>> state = new ImageResourceState(Time.valueOf(new
>>> Date()));
>>> state.setContentType("image/jpeg");
>>>
>>> //SECURITY PRECAUTION - DO NOT ALLOW ANYTHING BUT
>>> IMAGES!
>>> if
>>> (imageId.contains(PropertyProxy.getExternalImagesRoot()) ||
>>>
>>> imageId.contains(PropertyProxy.getExternalImagesAltRoot()))
>>> {
>>> data = imgSrv.getImage(imageId);
>>> }
>>> else
>>> {
>>> //change image to "not found" warning
>>> image
>>> data =
>>> imgSrv.getImage(PropertyProxy.getImageNotFound());
>>>
>>> //TODO: send email to notify of
>>> inappropriate access
>>> }
>>>
>>> state.setData(data);
>>> }
>>> catch (FileNotFoundException exp)
>>> {
>>> LogProxy.saveEntry(exp);
>>> }
>>> catch (IOException exp)
>>> {
>>> LogProxy.saveEntry(exp);
>>> }
>>> catch (NullPointerException exp)
>>> {
>>> LogProxy.saveEntry(exp);
>>> }
>>>
>>> return state;
>>> }
>>>
>>> /**
>>> *
>>> * @author vjenks
>>> *
>>> */
>>> protected class ImageResourceState extends ResourceState
>>> {
>>> private String contentType;
>>> private byte[] data;
>>> private Time lastModified;
>>>
>>> ImageResourceState(Time lastModified)
>>> {
>>> super();
>>> this.lastModified = lastModified;
>>> }
>>>
>>> public String getContentType()
>>> {
>>> return contentType;
>>> }
>>>
>>> void setContentType(String contentType)
>>> {
>>> this.contentType = contentType;
>>> }
>>>
>>> public byte[] getData()
>>> {
>>> return data;
>>> }
>>>
>>> void setData(byte[] data)
>>> {
>>> this.data = data;
>>> }
>>>
>>> public int getLength()
>>> {
>>> if (data != null)
>>> return data.length;
>>> else
>>> return 0;
>>> }
>>>
>>> public Time lastModifiedTime()
>>> {
>>> return lastModified;
>>> }
>>> }
>>> }
>>> /*****************************************************/
>>>
>>>
>>> You can see that it uses a class called ImageServiceEngine:
>>>
>>> /*****************************************************/
>>> public class ImageServiceEngine implements ImageService, Serializable
>>> {
>>> private int thumbnailSize;
>>>
>>> public ImageServiceEngine()
>>> {
>>> super();
>>> }
>>>
>>> public int getThumbnailSize()
>>> {
>>> return this.thumbnailSize;
>>> }
>>>
>>> public void setThumbnailSize(int size)
>>> {
>>> this.thumbnailSize = size;
>>> }
>>>
>>> public byte[] getImage(String image) throws IOException
>>> {
>>> // Open the file, then read it in.
>>> ByteArrayOutputStream outStream = new
>>> ByteArrayOutputStream();
>>> InputStream inStream = new FileInputStream(new
>>> File(image));
>>> copy(inStream, outStream);
>>> inStream.close();
>>> outStream.close();
>>> return outStream.toByteArray();
>>> }
>>>
>>> public Date getLastModifyTime(String image)
>>> {
>>> File f = new File(image);
>>> return new Date(f.lastModified());
>>> }
>>>
>>> /* Spring Injected */
>>> private File imageDir;
>>>
>>> public void setImageDir(String dirName)
>>> {
>>> imageDir = new File(dirName);
>>> }
>>>
>>> public byte[] getThumbnail(String image) throws IOException
>>> {
>>> // Open the file, then read it in.
>>> ByteArrayOutputStream outStream = new
>>> ByteArrayOutputStream();
>>> InputStream inStream = new FileInputStream(new
>>> File(image));
>>> copy(inStream, outStream);
>>> inStream.close();
>>> outStream.close();
>>> return outStream.toByteArray();
>>> }
>>>
>>> /**
>>> * Copies data from src into dst.
>>> */
>>> private void copy(InputStream source, OutputStream destination)
>>> throws IOException
>>> {
>>> try
>>> {
>>> // Transfer bytes from source to destination
>>> byte[] buf = new byte[1024];
>>> int len;
>>> while ((len = source.read(buf)) > 0)
>>> {
>>> destination.write(buf, 0, len);
>>> }
>>> source.close();
>>> destination.close();
>>> }
>>> catch (IOException ioe)
>>> {
>>> throw ioe;
>>> }
>>> }
>>>
>>> private File createImageFile(String image)
>>> {
>>> File file = new File(imageDir, image);
>>> return file;
>>> }
>>>
>>>
>>> /** @see ImageService#save(ImageEntry) */
>>> public void save(String image, InputStream imageStream)
>>> throws IOException
>>> {
>>> // Read in the image data.
>>> ByteArrayOutputStream baos = new ByteArrayOutputStream();
>>> copy(imageStream, baos);
>>> baos.close();
>>> byte[] imageData = baos.toByteArray();
>>> baos = null;
>>>
>>> // Create a unique name for the file in the image
>>> directory and
>>> // write the image data into it.
>>> File newFile = createImageFile(image);
>>> OutputStream outStream = new FileOutputStream(newFile);
>>> outStream.write(imageData);
>>> outStream.close();
>>> }
>>> }
>>> /*****************************************************/
>>>
>>>
>>> ImageResource is setup in init() in the App class like so:
>>>
>>> /*****************************************************/
>>> public void init()
>>> {
>>> //create external images resource
>>> getSharedResources().add("imageResource", new ImageResource());
>>> }
>>> /*****************************************************/
>>>
>>> Now, if there's a nicer, cleaner, more simple way of loading external
>>> images, I'd really appreciate some suggestions.
>>>
>>> As for what is now broken, it seems to have something to do w/ the fact
>>> that
>>> the Wicket Filter is looking at "/*" to find the application because if I
>>> use this URL to view an image via my "imageResource" like so:
>>>
>>> http://localhost/MyApp/resources/wicket.Application/imageResource?file=C:\\Images\\assets\\images\\newsletter\\test_bkg.jpg
>>>
>>> ...I get a 404 not found. This worked fine when my URL had an alias in
>>> Wicket 1.2, i.e. "/products" instead of the "/*" that is used now. If I
>>> use
>>> "/products" in the URL above, as I would have prior to 1.3 (since I have
>>> it
>>> listed as a mountable URL in the app class) - it throws an exception
>>> saying
>>> "java.lang.IllegalStateException: URL fragment has unmatched key/value
>>> pair:
>>> resources/wicket.Application/imageResource"
>>>
>>> So, I need help in both areas....one, making this easier, if possible.
>>> And,
>>> most importantly - being able to restore production and be able to view
>>> external images ASAP.
>>>
>>> Thanks very much in advance!
>>> --
>>> View this message in context:
>>> http://www.nabble.com/More-issues-w--external-images-and-DynamicWebResource-tp18114584p18114584.html
>>> Sent from the Wicket - User mailing list archive at Nabble.com.
>>>
>>>
>>> ---------------------------------------------------------------------
>>> To unsubscribe, e-mail: users-unsubscribe@wicket.apache.org
>>> For additional commands, e-mail: users-help@wicket.apache.org
>>>
>>>
>>>
>> ---------------------------------------------------------------------
>> To unsubscribe, e-mail: users-unsubscribe@wicket.apache.org
>> For additional commands, e-mail: users-help@wicket.apache.org
>>
>>
>>
>>
>
>
--
-Wicket for love
Nino Martinez Wael
Java Specialist @ Jayway DK
http://www.jayway.dk
+45 2936 7684
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Re: More issues w/ external images and DynamicWebResource
Posted by "V. Jenks" <za...@gmail.com>.
Thanks Igor, I'll look into this - not something I've tried yet. I was
hoping there'd be a short-term tweak to what I already have in place because
there are references to that imageResource lookup URL in several spots in my
code that I'd now have to go and swap out.
igor.vaynberg wrote:
>
> why not just create a dead simple servlet that streams images? in fact
> there are tons of them online you can just take. it is a much simpler
> solution then dealing with wicket's resources for this particular
> usecase.
>
> -igor
>
> On Wed, Jun 25, 2008 at 7:59 AM, V. Jenks <za...@gmail.com> wrote:
>>
>> I'm having non-stop issues w/ DynamicWebResource and trying to load
>> images
>> external to my .ear deployment now that I've moved to 1.3. First off,
>> I'm
>> hoping someone can suggest an easier way to do it because what I have now
>> is
>> code that someone was nice enough to give me, here on the Wicket mailing
>> list. However, I don't entirely understand how it works and while it
>> worked
>> for 2 years in Wicket 1.2, it is now causing me problem after problem in
>> Wicket 1.3.x - for whatever reason.
>>
>> First what I've got is a class called ImageResource which extends
>> DynamicWebResource:
>>
>> /*****************************************************/
>> public class ImageResource extends DynamicWebResource
>> {
>> private ImageService imgSrv;
>>
>> public ImageResource()
>> {
>> super();
>> imgSrv = new ImageServiceEngine();
>> }
>>
>> public String getImage(String image)
>> {
>> String retImg = null;
>>
>> try
>> {
>> retImg = imgSrv.getImage(image).toString();
>> }
>> catch (IOException exp)
>> {
>> LogProxy.saveEntry(exp);
>> }
>>
>> return retImg;
>> }
>>
>> protected ResourceState getResourceState()
>> {
>> ImageResourceState state = null;
>>
>> try
>> {
>> ValueMap params = getParameters();
>>
>> byte[] data = null;
>> String imageId = params.getString("file");
>>
>> //Date lastModified = getImageLastMod(imageId);
>> state = new ImageResourceState(Time.valueOf(new
>> Date()));
>> state.setContentType("image/jpeg");
>>
>> //SECURITY PRECAUTION - DO NOT ALLOW ANYTHING BUT
>> IMAGES!
>> if
>> (imageId.contains(PropertyProxy.getExternalImagesRoot()) ||
>>
>> imageId.contains(PropertyProxy.getExternalImagesAltRoot()))
>> {
>> data = imgSrv.getImage(imageId);
>> }
>> else
>> {
>> //change image to "not found" warning
>> image
>> data =
>> imgSrv.getImage(PropertyProxy.getImageNotFound());
>>
>> //TODO: send email to notify of
>> inappropriate access
>> }
>>
>> state.setData(data);
>> }
>> catch (FileNotFoundException exp)
>> {
>> LogProxy.saveEntry(exp);
>> }
>> catch (IOException exp)
>> {
>> LogProxy.saveEntry(exp);
>> }
>> catch (NullPointerException exp)
>> {
>> LogProxy.saveEntry(exp);
>> }
>>
>> return state;
>> }
>>
>> /**
>> *
>> * @author vjenks
>> *
>> */
>> protected class ImageResourceState extends ResourceState
>> {
>> private String contentType;
>> private byte[] data;
>> private Time lastModified;
>>
>> ImageResourceState(Time lastModified)
>> {
>> super();
>> this.lastModified = lastModified;
>> }
>>
>> public String getContentType()
>> {
>> return contentType;
>> }
>>
>> void setContentType(String contentType)
>> {
>> this.contentType = contentType;
>> }
>>
>> public byte[] getData()
>> {
>> return data;
>> }
>>
>> void setData(byte[] data)
>> {
>> this.data = data;
>> }
>>
>> public int getLength()
>> {
>> if (data != null)
>> return data.length;
>> else
>> return 0;
>> }
>>
>> public Time lastModifiedTime()
>> {
>> return lastModified;
>> }
>> }
>> }
>> /*****************************************************/
>>
>>
>> You can see that it uses a class called ImageServiceEngine:
>>
>> /*****************************************************/
>> public class ImageServiceEngine implements ImageService, Serializable
>> {
>> private int thumbnailSize;
>>
>> public ImageServiceEngine()
>> {
>> super();
>> }
>>
>> public int getThumbnailSize()
>> {
>> return this.thumbnailSize;
>> }
>>
>> public void setThumbnailSize(int size)
>> {
>> this.thumbnailSize = size;
>> }
>>
>> public byte[] getImage(String image) throws IOException
>> {
>> // Open the file, then read it in.
>> ByteArrayOutputStream outStream = new
>> ByteArrayOutputStream();
>> InputStream inStream = new FileInputStream(new
>> File(image));
>> copy(inStream, outStream);
>> inStream.close();
>> outStream.close();
>> return outStream.toByteArray();
>> }
>>
>> public Date getLastModifyTime(String image)
>> {
>> File f = new File(image);
>> return new Date(f.lastModified());
>> }
>>
>> /* Spring Injected */
>> private File imageDir;
>>
>> public void setImageDir(String dirName)
>> {
>> imageDir = new File(dirName);
>> }
>>
>> public byte[] getThumbnail(String image) throws IOException
>> {
>> // Open the file, then read it in.
>> ByteArrayOutputStream outStream = new
>> ByteArrayOutputStream();
>> InputStream inStream = new FileInputStream(new
>> File(image));
>> copy(inStream, outStream);
>> inStream.close();
>> outStream.close();
>> return outStream.toByteArray();
>> }
>>
>> /**
>> * Copies data from src into dst.
>> */
>> private void copy(InputStream source, OutputStream destination)
>> throws IOException
>> {
>> try
>> {
>> // Transfer bytes from source to destination
>> byte[] buf = new byte[1024];
>> int len;
>> while ((len = source.read(buf)) > 0)
>> {
>> destination.write(buf, 0, len);
>> }
>> source.close();
>> destination.close();
>> }
>> catch (IOException ioe)
>> {
>> throw ioe;
>> }
>> }
>>
>> private File createImageFile(String image)
>> {
>> File file = new File(imageDir, image);
>> return file;
>> }
>>
>>
>> /** @see ImageService#save(ImageEntry) */
>> public void save(String image, InputStream imageStream)
>> throws IOException
>> {
>> // Read in the image data.
>> ByteArrayOutputStream baos = new ByteArrayOutputStream();
>> copy(imageStream, baos);
>> baos.close();
>> byte[] imageData = baos.toByteArray();
>> baos = null;
>>
>> // Create a unique name for the file in the image
>> directory and
>> // write the image data into it.
>> File newFile = createImageFile(image);
>> OutputStream outStream = new FileOutputStream(newFile);
>> outStream.write(imageData);
>> outStream.close();
>> }
>> }
>> /*****************************************************/
>>
>>
>> ImageResource is setup in init() in the App class like so:
>>
>> /*****************************************************/
>> public void init()
>> {
>> //create external images resource
>> getSharedResources().add("imageResource", new ImageResource());
>> }
>> /*****************************************************/
>>
>> Now, if there's a nicer, cleaner, more simple way of loading external
>> images, I'd really appreciate some suggestions.
>>
>> As for what is now broken, it seems to have something to do w/ the fact
>> that
>> the Wicket Filter is looking at "/*" to find the application because if I
>> use this URL to view an image via my "imageResource" like so:
>>
>> http://localhost/MyApp/resources/wicket.Application/imageResource?file=C:\\Images\\assets\\images\\newsletter\\test_bkg.jpg
>>
>> ...I get a 404 not found. This worked fine when my URL had an alias in
>> Wicket 1.2, i.e. "/products" instead of the "/*" that is used now. If I
>> use
>> "/products" in the URL above, as I would have prior to 1.3 (since I have
>> it
>> listed as a mountable URL in the app class) - it throws an exception
>> saying
>> "java.lang.IllegalStateException: URL fragment has unmatched key/value
>> pair:
>> resources/wicket.Application/imageResource"
>>
>> So, I need help in both areas....one, making this easier, if possible.
>> And,
>> most importantly - being able to restore production and be able to view
>> external images ASAP.
>>
>> Thanks very much in advance!
>> --
>> View this message in context:
>> http://www.nabble.com/More-issues-w--external-images-and-DynamicWebResource-tp18114584p18114584.html
>> Sent from the Wicket - User mailing list archive at Nabble.com.
>>
>>
>> ---------------------------------------------------------------------
>> To unsubscribe, e-mail: users-unsubscribe@wicket.apache.org
>> For additional commands, e-mail: users-help@wicket.apache.org
>>
>>
>
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>
>
>
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Re: More issues w/ external images and DynamicWebResource
Posted by Igor Vaynberg <ig...@gmail.com>.
why not just create a dead simple servlet that streams images? in fact
there are tons of them online you can just take. it is a much simpler
solution then dealing with wicket's resources for this particular
usecase.
-igor
On Wed, Jun 25, 2008 at 7:59 AM, V. Jenks <za...@gmail.com> wrote:
>
> I'm having non-stop issues w/ DynamicWebResource and trying to load images
> external to my .ear deployment now that I've moved to 1.3. First off, I'm
> hoping someone can suggest an easier way to do it because what I have now is
> code that someone was nice enough to give me, here on the Wicket mailing
> list. However, I don't entirely understand how it works and while it worked
> for 2 years in Wicket 1.2, it is now causing me problem after problem in
> Wicket 1.3.x - for whatever reason.
>
> First what I've got is a class called ImageResource which extends
> DynamicWebResource:
>
> /*****************************************************/
> public class ImageResource extends DynamicWebResource
> {
> private ImageService imgSrv;
>
> public ImageResource()
> {
> super();
> imgSrv = new ImageServiceEngine();
> }
>
> public String getImage(String image)
> {
> String retImg = null;
>
> try
> {
> retImg = imgSrv.getImage(image).toString();
> }
> catch (IOException exp)
> {
> LogProxy.saveEntry(exp);
> }
>
> return retImg;
> }
>
> protected ResourceState getResourceState()
> {
> ImageResourceState state = null;
>
> try
> {
> ValueMap params = getParameters();
>
> byte[] data = null;
> String imageId = params.getString("file");
>
> //Date lastModified = getImageLastMod(imageId);
> state = new ImageResourceState(Time.valueOf(new Date()));
> state.setContentType("image/jpeg");
>
> //SECURITY PRECAUTION - DO NOT ALLOW ANYTHING BUT IMAGES!
> if (imageId.contains(PropertyProxy.getExternalImagesRoot()) ||
> imageId.contains(PropertyProxy.getExternalImagesAltRoot()))
> {
> data = imgSrv.getImage(imageId);
> }
> else
> {
> //change image to "not found" warning image
> data = imgSrv.getImage(PropertyProxy.getImageNotFound());
>
> //TODO: send email to notify of inappropriate access
> }
>
> state.setData(data);
> }
> catch (FileNotFoundException exp)
> {
> LogProxy.saveEntry(exp);
> }
> catch (IOException exp)
> {
> LogProxy.saveEntry(exp);
> }
> catch (NullPointerException exp)
> {
> LogProxy.saveEntry(exp);
> }
>
> return state;
> }
>
> /**
> *
> * @author vjenks
> *
> */
> protected class ImageResourceState extends ResourceState
> {
> private String contentType;
> private byte[] data;
> private Time lastModified;
>
> ImageResourceState(Time lastModified)
> {
> super();
> this.lastModified = lastModified;
> }
>
> public String getContentType()
> {
> return contentType;
> }
>
> void setContentType(String contentType)
> {
> this.contentType = contentType;
> }
>
> public byte[] getData()
> {
> return data;
> }
>
> void setData(byte[] data)
> {
> this.data = data;
> }
>
> public int getLength()
> {
> if (data != null)
> return data.length;
> else
> return 0;
> }
>
> public Time lastModifiedTime()
> {
> return lastModified;
> }
> }
> }
> /*****************************************************/
>
>
> You can see that it uses a class called ImageServiceEngine:
>
> /*****************************************************/
> public class ImageServiceEngine implements ImageService, Serializable
> {
> private int thumbnailSize;
>
> public ImageServiceEngine()
> {
> super();
> }
>
> public int getThumbnailSize()
> {
> return this.thumbnailSize;
> }
>
> public void setThumbnailSize(int size)
> {
> this.thumbnailSize = size;
> }
>
> public byte[] getImage(String image) throws IOException
> {
> // Open the file, then read it in.
> ByteArrayOutputStream outStream = new ByteArrayOutputStream();
> InputStream inStream = new FileInputStream(new File(image));
> copy(inStream, outStream);
> inStream.close();
> outStream.close();
> return outStream.toByteArray();
> }
>
> public Date getLastModifyTime(String image)
> {
> File f = new File(image);
> return new Date(f.lastModified());
> }
>
> /* Spring Injected */
> private File imageDir;
>
> public void setImageDir(String dirName)
> {
> imageDir = new File(dirName);
> }
>
> public byte[] getThumbnail(String image) throws IOException
> {
> // Open the file, then read it in.
> ByteArrayOutputStream outStream = new ByteArrayOutputStream();
> InputStream inStream = new FileInputStream(new File(image));
> copy(inStream, outStream);
> inStream.close();
> outStream.close();
> return outStream.toByteArray();
> }
>
> /**
> * Copies data from src into dst.
> */
> private void copy(InputStream source, OutputStream destination)
> throws IOException
> {
> try
> {
> // Transfer bytes from source to destination
> byte[] buf = new byte[1024];
> int len;
> while ((len = source.read(buf)) > 0)
> {
> destination.write(buf, 0, len);
> }
> source.close();
> destination.close();
> }
> catch (IOException ioe)
> {
> throw ioe;
> }
> }
>
> private File createImageFile(String image)
> {
> File file = new File(imageDir, image);
> return file;
> }
>
>
> /** @see ImageService#save(ImageEntry) */
> public void save(String image, InputStream imageStream)
> throws IOException
> {
> // Read in the image data.
> ByteArrayOutputStream baos = new ByteArrayOutputStream();
> copy(imageStream, baos);
> baos.close();
> byte[] imageData = baos.toByteArray();
> baos = null;
>
> // Create a unique name for the file in the image directory and
> // write the image data into it.
> File newFile = createImageFile(image);
> OutputStream outStream = new FileOutputStream(newFile);
> outStream.write(imageData);
> outStream.close();
> }
> }
> /*****************************************************/
>
>
> ImageResource is setup in init() in the App class like so:
>
> /*****************************************************/
> public void init()
> {
> //create external images resource
> getSharedResources().add("imageResource", new ImageResource());
> }
> /*****************************************************/
>
> Now, if there's a nicer, cleaner, more simple way of loading external
> images, I'd really appreciate some suggestions.
>
> As for what is now broken, it seems to have something to do w/ the fact that
> the Wicket Filter is looking at "/*" to find the application because if I
> use this URL to view an image via my "imageResource" like so:
>
> http://localhost/MyApp/resources/wicket.Application/imageResource?file=C:\\Images\\assets\\images\\newsletter\\test_bkg.jpg
>
> ...I get a 404 not found. This worked fine when my URL had an alias in
> Wicket 1.2, i.e. "/products" instead of the "/*" that is used now. If I use
> "/products" in the URL above, as I would have prior to 1.3 (since I have it
> listed as a mountable URL in the app class) - it throws an exception saying
> "java.lang.IllegalStateException: URL fragment has unmatched key/value pair:
> resources/wicket.Application/imageResource"
>
> So, I need help in both areas....one, making this easier, if possible. And,
> most importantly - being able to restore production and be able to view
> external images ASAP.
>
> Thanks very much in advance!
> --
> View this message in context: http://www.nabble.com/More-issues-w--external-images-and-DynamicWebResource-tp18114584p18114584.html
> Sent from the Wicket - User mailing list archive at Nabble.com.
>
>
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: users-unsubscribe@wicket.apache.org
> For additional commands, e-mail: users-help@wicket.apache.org
>
>
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Re: More issues w/ external images and DynamicWebResource
Posted by "V. Jenks" <za...@gmail.com>.
Ha! The author of that article is the guy who gave me that very same code
here on the mailing list. Look through the code I posted and you'll see the
similarities - it's literally unchanged.
However, as I described - it's not working now that I have to use a Wicket
Filter in 1.3.
Nino.Martinez wrote:
>
> Did you try searching the wiki about this?
>
> http://cwiki.apache.org/WICKET/uploaddownload.html
>
> There might be more...
>
> V. Jenks wrote:
>> I'm having non-stop issues w/ DynamicWebResource and trying to load
>> images
>> external to my .ear deployment now that I've moved to 1.3. First off,
>> I'm
>> hoping someone can suggest an easier way to do it because what I have now
>> is
>> code that someone was nice enough to give me, here on the Wicket mailing
>> list. However, I don't entirely understand how it works and while it
>> worked
>> for 2 years in Wicket 1.2, it is now causing me problem after problem in
>> Wicket 1.3.x - for whatever reason.
>>
>> First what I've got is a class called ImageResource which extends
>> DynamicWebResource:
>>
>> /*****************************************************/
>> public class ImageResource extends DynamicWebResource
>> {
>> private ImageService imgSrv;
>>
>> public ImageResource()
>> {
>> super();
>> imgSrv = new ImageServiceEngine();
>> }
>>
>> public String getImage(String image)
>> {
>> String retImg = null;
>>
>> try
>> {
>> retImg = imgSrv.getImage(image).toString();
>> }
>> catch (IOException exp)
>> {
>> LogProxy.saveEntry(exp);
>> }
>>
>> return retImg;
>> }
>>
>> protected ResourceState getResourceState()
>> {
>> ImageResourceState state = null;
>>
>> try
>> {
>> ValueMap params = getParameters();
>>
>> byte[] data = null;
>> String imageId = params.getString("file");
>>
>> //Date lastModified = getImageLastMod(imageId);
>> state = new ImageResourceState(Time.valueOf(new Date()));
>> state.setContentType("image/jpeg");
>>
>> //SECURITY PRECAUTION - DO NOT ALLOW ANYTHING BUT IMAGES!
>> if (imageId.contains(PropertyProxy.getExternalImagesRoot()) ||
>> imageId.contains(PropertyProxy.getExternalImagesAltRoot()))
>> {
>> data = imgSrv.getImage(imageId);
>> }
>> else
>> {
>> //change image to "not found" warning image
>> data = imgSrv.getImage(PropertyProxy.getImageNotFound());
>>
>> //TODO: send email to notify of inappropriate access
>> }
>>
>> state.setData(data);
>> }
>> catch (FileNotFoundException exp)
>> {
>> LogProxy.saveEntry(exp);
>> }
>> catch (IOException exp)
>> {
>> LogProxy.saveEntry(exp);
>> }
>> catch (NullPointerException exp)
>> {
>> LogProxy.saveEntry(exp);
>> }
>>
>> return state;
>> }
>>
>> /**
>> *
>> * @author vjenks
>> *
>> */
>> protected class ImageResourceState extends ResourceState
>> {
>> private String contentType;
>> private byte[] data;
>> private Time lastModified;
>>
>> ImageResourceState(Time lastModified)
>> {
>> super();
>> this.lastModified = lastModified;
>> }
>>
>> public String getContentType()
>> {
>> return contentType;
>> }
>>
>> void setContentType(String contentType)
>> {
>> this.contentType = contentType;
>> }
>>
>> public byte[] getData()
>> {
>> return data;
>> }
>>
>> void setData(byte[] data)
>> {
>> this.data = data;
>> }
>>
>> public int getLength()
>> {
>> if (data != null)
>> return data.length;
>> else
>> return 0;
>> }
>>
>> public Time lastModifiedTime()
>> {
>> return lastModified;
>> }
>> }
>> }
>> /*****************************************************/
>>
>>
>> You can see that it uses a class called ImageServiceEngine:
>>
>> /*****************************************************/
>> public class ImageServiceEngine implements ImageService, Serializable
>> {
>> private int thumbnailSize;
>>
>> public ImageServiceEngine()
>> {
>> super();
>> }
>>
>> public int getThumbnailSize()
>> {
>> return this.thumbnailSize;
>> }
>>
>> public void setThumbnailSize(int size)
>> {
>> this.thumbnailSize = size;
>> }
>>
>> public byte[] getImage(String image) throws IOException
>> {
>> // Open the file, then read it in.
>> ByteArrayOutputStream outStream = new ByteArrayOutputStream();
>> InputStream inStream = new FileInputStream(new File(image));
>> copy(inStream, outStream);
>> inStream.close();
>> outStream.close();
>> return outStream.toByteArray();
>> }
>>
>> public Date getLastModifyTime(String image)
>> {
>> File f = new File(image);
>> return new Date(f.lastModified());
>> }
>>
>> /* Spring Injected */
>> private File imageDir;
>>
>> public void setImageDir(String dirName)
>> {
>> imageDir = new File(dirName);
>> }
>>
>> public byte[] getThumbnail(String image) throws IOException
>> {
>> // Open the file, then read it in.
>> ByteArrayOutputStream outStream = new ByteArrayOutputStream();
>> InputStream inStream = new FileInputStream(new File(image));
>> copy(inStream, outStream);
>> inStream.close();
>> outStream.close();
>> return outStream.toByteArray();
>> }
>>
>> /**
>> * Copies data from src into dst.
>> */
>> private void copy(InputStream source, OutputStream destination)
>> throws IOException
>> {
>> try
>> {
>> // Transfer bytes from source to destination
>> byte[] buf = new byte[1024];
>> int len;
>> while ((len = source.read(buf)) > 0)
>> {
>> destination.write(buf, 0, len);
>> }
>> source.close();
>> destination.close();
>> }
>> catch (IOException ioe)
>> {
>> throw ioe;
>> }
>> }
>>
>> private File createImageFile(String image)
>> {
>> File file = new File(imageDir, image);
>> return file;
>> }
>>
>>
>> /** @see ImageService#save(ImageEntry) */
>> public void save(String image, InputStream imageStream)
>> throws IOException
>> {
>> // Read in the image data.
>> ByteArrayOutputStream baos = new ByteArrayOutputStream();
>> copy(imageStream, baos);
>> baos.close();
>> byte[] imageData = baos.toByteArray();
>> baos = null;
>>
>> // Create a unique name for the file in the image directory and
>> // write the image data into it.
>> File newFile = createImageFile(image);
>> OutputStream outStream = new FileOutputStream(newFile);
>> outStream.write(imageData);
>> outStream.close();
>> }
>> }
>> /*****************************************************/
>>
>>
>> ImageResource is setup in init() in the App class like so:
>>
>> /*****************************************************/
>> public void init()
>> {
>> //create external images resource
>> getSharedResources().add("imageResource", new ImageResource());
>> }
>> /*****************************************************/
>>
>> Now, if there's a nicer, cleaner, more simple way of loading external
>> images, I'd really appreciate some suggestions.
>>
>> As for what is now broken, it seems to have something to do w/ the fact
>> that
>> the Wicket Filter is looking at "/*" to find the application because if I
>> use this URL to view an image via my "imageResource" like so:
>>
>> http://localhost/MyApp/resources/wicket.Application/imageResource?file=C:\\Images\\assets\\images\\newsletter\\test_bkg.jpg
>>
>> ...I get a 404 not found. This worked fine when my URL had an alias in
>> Wicket 1.2, i.e. "/products" instead of the "/*" that is used now. If I
>> use
>> "/products" in the URL above, as I would have prior to 1.3 (since I have
>> it
>> listed as a mountable URL in the app class) - it throws an exception
>> saying
>> "java.lang.IllegalStateException: URL fragment has unmatched key/value
>> pair:
>> resources/wicket.Application/imageResource"
>>
>> So, I need help in both areas....one, making this easier, if possible.
>> And,
>> most importantly - being able to restore production and be able to view
>> external images ASAP.
>>
>> Thanks very much in advance!
>>
>
> --
> -Wicket for love
>
> Nino Martinez Wael
> Java Specialist @ Jayway DK
> http://www.jayway.dk
> +45 2936 7684
>
>
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Re: More issues w/ external images and DynamicWebResource
Posted by Nino Saturnino Martinez Vazquez Wael <ni...@jayway.dk>.
Did you try searching the wiki about this?
http://cwiki.apache.org/WICKET/uploaddownload.html
There might be more...
V. Jenks wrote:
> I'm having non-stop issues w/ DynamicWebResource and trying to load images
> external to my .ear deployment now that I've moved to 1.3. First off, I'm
> hoping someone can suggest an easier way to do it because what I have now is
> code that someone was nice enough to give me, here on the Wicket mailing
> list. However, I don't entirely understand how it works and while it worked
> for 2 years in Wicket 1.2, it is now causing me problem after problem in
> Wicket 1.3.x - for whatever reason.
>
> First what I've got is a class called ImageResource which extends
> DynamicWebResource:
>
> /*****************************************************/
> public class ImageResource extends DynamicWebResource
> {
> private ImageService imgSrv;
>
> public ImageResource()
> {
> super();
> imgSrv = new ImageServiceEngine();
> }
>
> public String getImage(String image)
> {
> String retImg = null;
>
> try
> {
> retImg = imgSrv.getImage(image).toString();
> }
> catch (IOException exp)
> {
> LogProxy.saveEntry(exp);
> }
>
> return retImg;
> }
>
> protected ResourceState getResourceState()
> {
> ImageResourceState state = null;
>
> try
> {
> ValueMap params = getParameters();
>
> byte[] data = null;
> String imageId = params.getString("file");
>
> //Date lastModified = getImageLastMod(imageId);
> state = new ImageResourceState(Time.valueOf(new Date()));
> state.setContentType("image/jpeg");
>
> //SECURITY PRECAUTION - DO NOT ALLOW ANYTHING BUT IMAGES!
> if (imageId.contains(PropertyProxy.getExternalImagesRoot()) ||
> imageId.contains(PropertyProxy.getExternalImagesAltRoot()))
> {
> data = imgSrv.getImage(imageId);
> }
> else
> {
> //change image to "not found" warning image
> data = imgSrv.getImage(PropertyProxy.getImageNotFound());
>
> //TODO: send email to notify of inappropriate access
> }
>
> state.setData(data);
> }
> catch (FileNotFoundException exp)
> {
> LogProxy.saveEntry(exp);
> }
> catch (IOException exp)
> {
> LogProxy.saveEntry(exp);
> }
> catch (NullPointerException exp)
> {
> LogProxy.saveEntry(exp);
> }
>
> return state;
> }
>
> /**
> *
> * @author vjenks
> *
> */
> protected class ImageResourceState extends ResourceState
> {
> private String contentType;
> private byte[] data;
> private Time lastModified;
>
> ImageResourceState(Time lastModified)
> {
> super();
> this.lastModified = lastModified;
> }
>
> public String getContentType()
> {
> return contentType;
> }
>
> void setContentType(String contentType)
> {
> this.contentType = contentType;
> }
>
> public byte[] getData()
> {
> return data;
> }
>
> void setData(byte[] data)
> {
> this.data = data;
> }
>
> public int getLength()
> {
> if (data != null)
> return data.length;
> else
> return 0;
> }
>
> public Time lastModifiedTime()
> {
> return lastModified;
> }
> }
> }
> /*****************************************************/
>
>
> You can see that it uses a class called ImageServiceEngine:
>
> /*****************************************************/
> public class ImageServiceEngine implements ImageService, Serializable
> {
> private int thumbnailSize;
>
> public ImageServiceEngine()
> {
> super();
> }
>
> public int getThumbnailSize()
> {
> return this.thumbnailSize;
> }
>
> public void setThumbnailSize(int size)
> {
> this.thumbnailSize = size;
> }
>
> public byte[] getImage(String image) throws IOException
> {
> // Open the file, then read it in.
> ByteArrayOutputStream outStream = new ByteArrayOutputStream();
> InputStream inStream = new FileInputStream(new File(image));
> copy(inStream, outStream);
> inStream.close();
> outStream.close();
> return outStream.toByteArray();
> }
>
> public Date getLastModifyTime(String image)
> {
> File f = new File(image);
> return new Date(f.lastModified());
> }
>
> /* Spring Injected */
> private File imageDir;
>
> public void setImageDir(String dirName)
> {
> imageDir = new File(dirName);
> }
>
> public byte[] getThumbnail(String image) throws IOException
> {
> // Open the file, then read it in.
> ByteArrayOutputStream outStream = new ByteArrayOutputStream();
> InputStream inStream = new FileInputStream(new File(image));
> copy(inStream, outStream);
> inStream.close();
> outStream.close();
> return outStream.toByteArray();
> }
>
> /**
> * Copies data from src into dst.
> */
> private void copy(InputStream source, OutputStream destination)
> throws IOException
> {
> try
> {
> // Transfer bytes from source to destination
> byte[] buf = new byte[1024];
> int len;
> while ((len = source.read(buf)) > 0)
> {
> destination.write(buf, 0, len);
> }
> source.close();
> destination.close();
> }
> catch (IOException ioe)
> {
> throw ioe;
> }
> }
>
> private File createImageFile(String image)
> {
> File file = new File(imageDir, image);
> return file;
> }
>
>
> /** @see ImageService#save(ImageEntry) */
> public void save(String image, InputStream imageStream)
> throws IOException
> {
> // Read in the image data.
> ByteArrayOutputStream baos = new ByteArrayOutputStream();
> copy(imageStream, baos);
> baos.close();
> byte[] imageData = baos.toByteArray();
> baos = null;
>
> // Create a unique name for the file in the image directory and
> // write the image data into it.
> File newFile = createImageFile(image);
> OutputStream outStream = new FileOutputStream(newFile);
> outStream.write(imageData);
> outStream.close();
> }
> }
> /*****************************************************/
>
>
> ImageResource is setup in init() in the App class like so:
>
> /*****************************************************/
> public void init()
> {
> //create external images resource
> getSharedResources().add("imageResource", new ImageResource());
> }
> /*****************************************************/
>
> Now, if there's a nicer, cleaner, more simple way of loading external
> images, I'd really appreciate some suggestions.
>
> As for what is now broken, it seems to have something to do w/ the fact that
> the Wicket Filter is looking at "/*" to find the application because if I
> use this URL to view an image via my "imageResource" like so:
>
> http://localhost/MyApp/resources/wicket.Application/imageResource?file=C:\\Images\\assets\\images\\newsletter\\test_bkg.jpg
>
> ...I get a 404 not found. This worked fine when my URL had an alias in
> Wicket 1.2, i.e. "/products" instead of the "/*" that is used now. If I use
> "/products" in the URL above, as I would have prior to 1.3 (since I have it
> listed as a mountable URL in the app class) - it throws an exception saying
> "java.lang.IllegalStateException: URL fragment has unmatched key/value pair:
> resources/wicket.Application/imageResource"
>
> So, I need help in both areas....one, making this easier, if possible. And,
> most importantly - being able to restore production and be able to view
> external images ASAP.
>
> Thanks very much in advance!
>
--
-Wicket for love
Nino Martinez Wael
Java Specialist @ Jayway DK
http://www.jayway.dk
+45 2936 7684
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