New version of JFreeChart Sample WAR available

[Guest]

how to write jsp exception in log file

[mjtee]

Hello Richard,

May i know why i can't display the graph while others JSP is working fine? There is no error showing, only the graph not able to displayed. Please advice.

Thanks.
Regards,
mjtee

[mjtee]

hello,

My mistake, i found it... is the web.xml cause the chart now showing.

Thanks.
Regards,
Ming Jade

[zulfikaralib]

Hello Richard,

I've managed to run the war file on my system and its working absolutely fine with the static Data that has been defined in WebHitDataSet.java

I also managed to reteieve the data from Oracle and work it with Bar and Pie Chart using the same query, but am not able to work that with XY Chart.

Is it possible to do so? Please do let me know of it. I have thought of executing the query in the DataSet class and then store the resultSet in the ArrayList. What do you suggest?

Thank You.
Zulfikarali Barodawala,
zulfikaralib@gmail.com

[mjtee]

Hi Richard,

I found that the example showing the chart will always create one image file under the WINNT folder for Window 2000. May i know how can i delete the file every time the user close the application or maybe we can write to the same image name, since every refresh will create one image file with different name.

Please advice.
Thanks.
Regards,
mjtee

[Guest]

Another option is save a chart image to output stream instead of filesystem, then stream out directly to client browser.

[Guest]

Hi everyone:

Im wondering if anyone of you know where can i get the java files of the org.jfree

thanks

do u kno some punch lines

[khanhtran]

JFreeChart is now at version 1.0.1. The sample doesen't work with this version. When will it works with JFreeChart 1.0.1? What to change the source to work with this JFreeChart version?
Thanks.

[gohkimle]

JFreeChart is now at version 1.0.1. The sample doesen't work with this version. When will it works with JFreeChart 1.0.1? What to change the source to work with this JFreeChart version?
Thanks.

You can download the updated web archive I've created: kimleng.goh.googlepages.com/jfreechart-sample.war

Basically, besides changing to use jcommon-1.0.0.jar and jfreechart-1.0.1.jar in webapps/jfreechart-sampleWEB-INF/lib/, just change the source code in WebHitChart.java and recompile that file. The changes required are:

Code: Select all

diff WebHitChart.java.old WebHitChart.java
27,30c27,30
< import org.jfree.chart.renderer.BarRenderer;
< import org.jfree.chart.renderer.StandardXYItemRenderer;
< import org.jfree.chart.renderer.StackedXYAreaRenderer;
< import org.jfree.chart.renderer.XYAreaRenderer;
---
> import org.jfree.chart.renderer.category.BarRenderer;
> import org.jfree.chart.renderer.xy.StandardXYItemRenderer;
> import org.jfree.chart.renderer.xy.StackedXYAreaRenderer;
> import org.jfree.chart.renderer.xy.XYAreaRenderer;
35a36,41
> import org.jfree.data.category.DefaultCategoryDataset;
> import org.jfree.data.general.DefaultPieDataset;
> import org.jfree.data.xy.XYSeries;
> import org.jfree.data.xy.XYSeriesCollection;
> import org.jfree.data.xy.DefaultTableXYDataset;
> import org.jfree.ui.RectangleInsets;
76c82
<                       ChartUtilities.writeImageMap(pw, filename, info);
---
>                       ChartUtilities.writeImageMap(pw, filename, info, false);
113c119
<                       plot.setInsets(new Insets(0, 5, 5, 5));
---
>                       plot.setInsets(new RectangleInsets(0, 5, 5, 5));
115c121
<             plot.setToolTipGenerator(new StandardPieItemLabelGenerator());
---
>             plot.setToolTipGenerator(new StandardPieToolTipGenerator());
124c130
<                       ChartUtilities.writeImageMap(pw, filename, info);
---
>                       ChartUtilities.writeImageMap(pw, filename, info, false);
186c192
<                       ChartUtilities.writeImageMap(pw, filename, info);
---
>                       ChartUtilities.writeImageMap(pw, filename, info, false);
271c277
<             ChartUtilities.writeImageMap(pw, filename, info);
---
>             ChartUtilities.writeImageMap(pw, filename, info, false);

Regards,
KL

[david.gilbert]

Thanks!

[FahadJan]

Hi Richard,

The jfreechart war file is working fine, if i deploy it into tomcat. But i retrive the code and try to execute it using netbeans then everything works fine but i don't get the graph shown in the container. Could you please guide me in this regard?

Regards,
Fahad