Sure thing.....will sit down over the weekend and get it done....
J. David Mendoza R. wrote: > > Of course we would love a Struts2 - JFreeChart tutorial!!! Please do... > > David M. > > > 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] >>>>>>> >>>>>>> >>>>>>> >>>>>>> >>>>>> >>>>> >>>> >>> >> >> > > --------------------------------------------------------------------- > 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#a9175612 Sent from the AppFuse - User mailing list archive at Nabble.com. --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
