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Struts & Hibernate
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| | | Dynamic image generation servlet... | Dynamic image generation servlet... 2004-11-12 - By Michael Burbidge
Back
I have a very simple web application that contains two servlets. One
called GreetingServlet that displays the web page for the application.
The web page includes an image that is dynamically generated by the
second servlet, called ImageServlet. I'm thinking that the
GreetingServlet can display the dynamic image by including the
following html snippet:
out.println("<img src='/image?name=imagename'>");
My web deployment descriptor looks like:
<web-app>
<display-name>Business Card</display-name>
<servlet>
<display-name>GreetingServlet</display-name>
<servlet-name>GreetingServlet</servlet-name>
<servlet-class>servlets.GreetingServlet</servlet-class>
</servlet>
<servlet>
<display-name>ImageServlet</display-name>
<servlet-name>ImageServlet</servlet-name>
<servlet-class>servlets.ImageServlet</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>GreetingServlet</servlet-name>
<url-pattern>/greeting</url-pattern>
</servlet-mapping>
<servlet-mapping>
<servlet-name>ImageServlet</servlet-name>
<url-pattern>/image</url-pattern>
</servlet-mapping>
</web-app>
Note that the ImageServlet is registered to handle URI from the root
context of the form "/image". I would think then that the URI in the
the html snippet <img src='/image?name=imagename'> would get resolved
by dispatching to my ImageServlet. But it doesn't work. My ImageServlet
never gets called. I think my deployment descriptor is set up correctly
because if I type the URI to the image in the browser directly, my
ImageServlet gets called. (e.g. http://localhost:8080/demo/image).
Any help would be appreciated.
Thanks,
Michael-
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