Draft ready...had to do it for our internal team also....will be posting it up soon.....
apologies for the delay J. David Mendoza R. wrote: > > Any news on this? > > David M. > > VJ22 wrote: >> 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] >>> >>> >>> >>> >> >> > > --------------------------------------------------------------------- > 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#a9345852 Sent from the AppFuse - User mailing list archive at Nabble.com. --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
