how to download generated PDF file, my application do the following:
1- Load object from grid
2- create html template
3- generated PDF file ( using itext library )
so how to download generated file ?
private void convertHTMLtoPDF(String html, String fileName) throws IOException, DocumentException, ParseException {
log.info("Convert Html to PDF");
// step 1
Document document = new Document();
// step 2
PdfWriter writer = PdfWriter.getInstance(document, new FileOutputStream(fileName));
// step 3
document.open();
// Styles
CSSResolver cssResolver = new StyleAttrCSSResolver();
XMLWorkerFontProvider fontProvider = new XMLWorkerFontProvider(XMLWorkerFontProvider.DONTLOOKFORFONTS);
fontProvider.register("Arial.ttf");
CssAppliers cssAppliers = new CssAppliersImpl(fontProvider);
HtmlPipelineContext htmlContext = new HtmlPipelineContext(cssAppliers);
htmlContext.setTagFactory(Tags.getHtmlTagProcessorFactory());
// Pipelines
PdfWriterPipeline pdf = new PdfWriterPipeline(document, writer);
HtmlPipeline htmlz = new HtmlPipeline(htmlContext, pdf);
CssResolverPipeline css = new CssResolverPipeline(cssResolver, htmlz);
InputStream stream = new ByteArrayInputStream(html.getBytes(StandardCharsets.UTF_8));
// XML Worker
XMLWorker worker = new XMLWorker(css, true);
XMLParser p = new XMLParser(worker);
p.parse(stream, Charset.forName("UTF-8"));
// step 5
document.close();
// *** CODE TO DOWNLOAD PDF GENERATED FILE ***
}
previous code converts HTML to PDF but i cannot download the generated file.
Vaadin Version: 14