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private void previewReport() throws EngineException {
//Configure the Engine and start the Platform
EngineConfig config = new EngineConfig();
config.setProperty("BIRT_HOME", "C:/birt-runtime-2_2_1_1/ReportEngine");
IReportEngine engine = null;
try{
Platform.startup( config );
// Create the report engine
IReportEngineFactory factory = (IReportEngineFactory) Platform
.createFactoryObject( IReportEngineFactory.EXTENSION_REPORT_ENGINE_FACTORY );
engine = factory.createReportEngine( config );
}catch( Exception ex){
ex.printStackTrace();
}
IReportRunnable design = null;
try {
// Open a report design - use design to modify design, retrieve
// embedded images etc.
String report = reportLocation.getText();
FileInputStream fs = new FileInputStream(report);
design = engine.openReportDesign(fs);
IRunAndRenderTask task = engine.createRunAndRenderTask(design);
// Set Render context to handle url and image locataions
HTMLRenderContext renderContext = new HTMLRenderContext();
renderContext.setImageDirectory("c:/test/image");
HashMap<String, HTMLRenderContext> contextMap = new HashMap<String, HTMLRenderContext>();
contextMap.put( EngineConstants.APPCONTEXT_HTML_RENDER_CONTEXT, renderContext );
task.setAppContext(contextMap);
// Set rendering options - such as file or stream output,
// output format, whether it is embeddable, etc
IRenderOption options;
options = new HTMLRenderOption( );
ByteArrayOutputStream bos = new ByteArrayOutputStream();
options.setOutputStream(bos);
options.setOutputFormat("html");
task.setRenderOption(options);
// run the report and destroy the engine
task.run();
task.close();
//set Browser text accordingly
browser.setText(bos.toString());
engine.destroy();
} catch (Exception e) {
e.printStackTrace();
} |
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