Legolas Woodland wrote:
a problem with servlet url mapping , a complex problem.
Hi
Thank you for reading my post.
My problem is about using a Chart library which works well in jsf
application
but it does not works in JSF portlets.
I think i find the problem but i do not know the solution.
to use this charting library we should add a servlet to web.xml
something like :
[code]
<servlet>
<servlet-name>Jenia internal servlet</servlet-name>
<servlet-class>org.jenia.faces.util.Servlet</servlet-class>
<load-on-startup>2</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>Jenia internal servlet</servlet-name>
<url-pattern>/jenia4faces/*</url-pattern>
</servlet-mapping>
[/code]
so , when we try to load a chart , it will make the chart image source
something like :
http://localhost:28080/Adv/jenia4faces/chart/OAReport.jspBarChart3d_id0.png
in the above sample , adv is the name of web application which is
deployed in a servlet container.
and filter applied to make the chart render-able.
[b]to use the chart library in jsf portlet , i add the servlet
description as i did for web application , so i add[/b]
[code]
<servlet>
<servlet-name>Jenia internal servlet</servlet-name>
<servlet-class>org.jenia.faces.util.Servlet</servlet-class>
<load-on-startup>2</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>Jenia internal servlet</servlet-name>
<url-pattern>/jenia4faces/*</url-pattern>
</servlet-mapping>
[/code]
to my portlet web.xml file.
when we have portlet , the url to access that portlet (which indeed is a
web application) changes
for example url for a sample portlet with same web application name
will be like
http://localhost:28080/pluto/portal/Adv/
as you can see there are some prefix to web application name in the url
, but when i use chart component to show
same chart , it still look for the chart in url like :
http://localhost:28080/Adv/jenia4faces/chart/OAReport.jspBarChart3d_id0.png
As you may already sugest , the image will not render because browser is
looking in wrong place.
now i think if i find some way to map that servlet to correct url
pattern it will works.
my question is :
1-what will be new servlet url pattern ?
2-is my assumption correct ?
Thank you very much for reading such a long post
The problem is that portlet URLs always must go back to the portal
The solution is usually provided by the library, such as with
DisplayTags, providing a nice abstraction for URL generation:
http://displaytag.sourceforge.net/11/portlet.html
or, by tools that try to make servlet applications run 'tranparently' in
portlets. One such tool is Apache Portals Bridges:
http://portals.apache.org/bridges/
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