writing chart output to a file..

Guys ,
I am having issue writing chart output to a file.
i could able to see the output in a jsp. But the same code in servlet is writing
to file with same size but cudnt able to see the image..

May i know how to resolve this ? which renderoption to use for charts ? is there any better way for getting the stream from runtime engine ? here is my code ..

HTMLRenderOption htmlRenderOption = new HTMLRenderOption();
try{
htmlRenderOption.setOutputFormat("html");
htmlRenderOption.setOutputStream(response.getOutputStream());
htmlRenderOption.setImageHandler(new HTMLServerImageHandler());
IReportRunnable runnable = birtReportEngine.openReportDesign( request.getSession().getServletContext().getRealPath("/reports") + "/sidebarchart.rptdesign");

// create task to run and render report
IRunAndRenderTask task = birtReportEngine.createRunAndRenderTask(runnable);
htmlRenderOption.setImageDirectory(request.getSession().getServletContext().getRealPath("/images"));
htmlRenderOption.setBaseImageURL(request.getContextPath() + "/images");
task.setRenderOption(htmlRenderOption);

HashMap contextMap = new HashMap();
if(xmlString!=null)
contextMap.put("org.eclipse.birt.report.data.oda.xml.inputStream",
new ByteArrayInputStream(xmlString.getBytes()));
else
contextMap.put("org.eclipse.birt.report.data.oda.xml.inputStream",null);
contextMap.put("org.eclipse.birt.report.data.oda.xml.closeInputStream",
new Boolean(true));
task.setAppContext(contextMap);

// run report
task.run();

task.close();
}catch(Exception e){
e.printStackTrace();
}

File f=new File("c:testtest4.png" );
FileOutputStream fop=new FileOutputStream(f);

fop.write(out.toByteArray());

fop.flush();
fop.close();

Find more posts tagged with

Comments

venky

guys ,

i didnt see any value property type outputformat to set image type.( i see only
html & pdf ) . May i know how to store image file from chart ?

htmlRenderOption.setOutputFormat("html");

Virgil Dodson

You might find more information about exporting charts as images at <a class='bbc_url' href='http://www.birt-exchange.org/wiki/BIRT:Charts2.2/#How_do_I_render_a_chart_into_an_image.3F'>BIRT:Charts2.2 - BIRT Wiki - BIRT Exchange</a>