Taming Thymeleaf Pdf Download | Top 100 SIMPLE |

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@GetMapping("/invoice/id/pdf") public ResponseEntity<byte[]> downloadInvoice(@PathVariable Long id) InvoiceDto invoice = invoiceService.findById(id); // your logic byte[] pdfBytes = pdfService.generateInvoicePdf(invoice);

private final SpringTemplateEngine templateEngine; taming thymeleaf pdf download

Here’s a focused feature guide for — covering setup, templating, rendering, and streaming. 1. Core Concept Thymeleaf alone doesn’t generate PDFs. Common approach: Thymeleaf → HTML → Flying Saucer / OpenPDF → PDF

public byte[] generateInvoicePdf(InvoiceDto invoice) Context context = new Context(); context.setVariable("invoice", invoice); Common approach: Thymeleaf → HTML → Flying Saucer

private final PdfService pdfService;

String html = templateEngine.process("invoice", context); private final PdfService pdfService

public PdfService(SpringTemplateEngine templateEngine) this.templateEngine = templateEngine;

public PdfController(PdfService pdfService) this.pdfService = pdfService;

try ITextRenderer renderer = new ITextRenderer(); renderer.setDocumentFromString(html); renderer.layout(); return renderer.createPDF(null); // byte array output catch (Exception e) throw new RuntimeException("PDF generation failed", e);

return ResponseEntity.ok() .header(HttpHeaders.CONTENT_DISPOSITION, "attachment; filename=invoice_" + id + ".pdf") .contentType(MediaType.APPLICATION_PDF) .body(pdfBytes);