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Struts & Hibernate
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| | | Displaying Generated Image on Jsp | Displaying Generated Image on Jsp 2004-12-17 - By Frank W. Zammetti
Back
Have a look at the DownloadApp sample I wrote for the new Struts
DownloadAction (http://www.omnytex.com/downloadapp.zip)... You may not
be using Struts, but you should still be able to get the basics of the
approach from that (even NOT using Struts, it should be a trivial matter
to transform the Action class into a Servlet, the rest as I recall
should be independant of Struts). One of the demonstrations is in fact
downloading an image from a database. Incidentally, I'd say this
(getting the image from a database and returning it via a servlet
pointed to by an <img> tag) is the "typical" pattern for solving this
problem.
--
Frank W. Zammetti
Founder and Chief Software Architect
Omnytex Technologies
http://www.omnytex.com
Jeroen Wenting wrote:
> You can use a Servlet to send the image data as a binary stream to the
> client and in the JSP place an image tag linking to that servlet.
> Data telling the servlet what image data to retrieve can be sent along
> as request parameters or placed in the Http Session.
>
>
>
> -- --Original Message-- --
> *From:* A mailing list for Java(tm) 2 Platform, Enterprise Edition
> [mailto:J2EE-INTEREST@(protected)]*On Behalf Of *Govind Kotwani
> *Sent:* Friday 17 December 2004 10:52
> *To:* J2EE-INTEREST@(protected)
> *Subject:* Displaying Generated Image on Jsp
>
>
> Hi,
>
> We have web J2EE web based application which is deployed on weblogic
> 8.1(on Unix) as an ear.
> This EAR contains some EJB's some jar files and a war file.
>
> Now we want to display an image on the jsp after retreiving it from
> the database.Image is stored in the database as a BLOB object.
> Currently what is implemented is e.g as soon as user selects a
> product an image file (.jpg) is generated from the BLOB
> object (at some predefined location say C:\ImageFolder) and in
> jsp(HTML) we display this image with with giving this path in
> IMG src tag.
>
> Is there any way where we can get rid of this absolute path(hard
> coded) path and generate the image at a relative path and display
> from there in our jsp or is there any other wat to achieve it.
>
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