PLEASE DO! You can post it here or you can create a page on the Struts2 wiki here: http://cwiki.apache.org/confluence/display/S2WIKI/Home You can just create your own account to post to this wiki. Both would be great. -Dusty
VJ22 wrote: > > Thanks Dusty.... > > I finally get this working and how....I was re-initializing the chart in > my execute() method after declaring it as a private variable...DUH DUH DUH > !!!!!! > > DO let me know if anyone else would be interested in a small tutorial on > using the new plug-in of struts 2 ....I would be more than glad to help > > As always thanks guys... > > Tks...VJ > > > > dusty wrote: >> >> What is the JFreeChart code in your action that creates the chart. >> Perhaps you have a problem there and the chart is not getting created or >> the variable is not getting populated? >> >> >> >> VJ22 wrote: >>> >>> Yes...exactly... >>> >>> We are using the standardized one...unfortunately....we are not able to >>> retrieve the chart of the value stack....that is why the error.... >>> >>> Tks....VJ >>> >>> >>> dusty wrote: >>>> >>>> Here are some JFreeChart results used in WebWork (Struts2's parent). >>>> >>>> http://www.opensymphony.com/webwork/wikidocs/JFreeChartResult.html >>>> >>>> It looks like in Struts they have formalized the JFreeChart result >>>> type: >>>> http://struts.apache.org/2.x/struts2-plugins/struts2-jfreechart-plugin/apidocs/index.html >>>> >>>> >>>> >>>> VJ22 wrote: >>>>> >>>>> Thanks Matt/David, >>>>> >>>>> I presume that by a servlet class you mean you flush the PNG file onto >>>>> the output stream which is then rendered by the JSP....We are aware of >>>>> that solution.... >>>>> >>>>> What we intend to use is the pull-MVC mechanism of Struts2...which >>>>> helps us use the getChart() method to render the chart >>>>> >>>>> Tks...Vijay >>>>> >>>>> >>>>> J. David Mendoza R. wrote: >>>>>> >>>>>> 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 >>>>>>> >>>>>> >>>>>> --------------------------------------------------------------------- >>>>>> To unsubscribe, e-mail: [EMAIL PROTECTED] >>>>>> For additional commands, e-mail: [EMAIL PROTECTED] >>>>>> >>>>>> >>>>>> >>>>> >>>>> >>>> >>>> >>> >>> >> >> > > -- View this message in context: http://www.nabble.com/JfreeChart---Struts2---Appfuse-detailed-problem-report-tf3279271s2369.html#a9167456 Sent from the AppFuse - User mailing list archive at Nabble.com. --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
