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From Legolas Woodland <legola...@gmail.com>
Subject a problem with servlet url mapping , a complex problem for mapping servlet to fit portal url prefix.
Date Sun, 22 Jan 2006 23:51:02 GMT
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


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