Hello Vijay...
I'm using appfuse 1.9.4, spring and jfreechart, and what I did is, I
made a servlet that uses jfreechart's tools to generate the chart as a
PNG image and just present it within the JSP... This should work with
any web framework...
David M.
VJ22 wrote:
Hello All,
The problem that I face while integrating AppFuse with JFreeChart
So I have a link which points to viewChart.html configured from the
menu..When I click on this link I got an action class which populates the
chart (Unit-tests prove that the png file is generated fine)...re-directs it
to viewChart.jsp which has got the following image code
<image src="/viewChart.html"/> -> which I presume will get the chart from
the action
The problem exception happens when it tries to execute the getChart()
method...in the action class....A part of the stack-trace is attached here
java.lang.NullPointerException: No chart found
at org.apache.struts2.dispatcher.ChartResult.execute(ChartResult.java:105)
at
com.opensymphony.xwork2.DefaultActionInvocation.executeResult(DefaultActionInvo
cation.java:343)
So I assume that the chart object is being invalidated....but why ? I assume
this uses a pull-MVC architecture...any help would be gladly
appreciated.....
struts.xml configuration
<package name="chart" extends="jfreechart-default">
<action name="viewChart"
class="com.pwmliteexp1.pwmLitexp1.web.action.PWMLitePieChartAction"
scope="session">
<result name="success" type="chart">/WEB-INF/pages/viewChart.jsp</result>
</action>
</package>
Thanks in advance
Rgds....Vijay
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