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HttpHeaders headers = new HttpHeaders(); headers.setContentType(MediaType.APPLICATION_PDF); headers.setContentDispositionFormData("attachment", "invoice_" + id + ".pdf"); headers.setContentLength(pdfBytes.length);
@GetMapping("/invoice/id/download") public ResponseEntity<byte[]> downloadInvoice(@PathVariable Long id) // Simulate fetching data from DB var items = List.of( Map.of("name", "Laptop", "quantity", 1, "unitPrice", 999.99, "total", 999.99), Map.of("name", "Mouse", "quantity", 2, "unitPrice", 19.99, "total", 39.98) );
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The book starts with the basics: setting up a Spring Boot project with the necessary dependencies. It explains the "natural templates" concept in depth, ensuring you understand why Thymeleaf works the way it does, rather than just how .
<!-- Flying Saucer + OpenPDF --> <dependency> <groupId>org.xhtmlrenderer</groupId> <artifactId>flying-saucer-pdf-openpdf</artifactId> <version>9.1.22</version> </dependency> HttpHeaders headers = new HttpHeaders(); headers
Thymeleaf is a powerful server-side Java template engine. In theory, it allows designers and developers to work on the same HTML files; designers see static pages, and developers see dynamic templates. However, in practice, Thymeleaf’s syntax—relying heavily on DOM processing, specific attribute selectors ( th:text , th:each , th:if )—can become verbose and confusing.
@GetMapping("/invoice/id/pdf") public ResponseEntity<byte[]> downloadInvoice(@PathVariable Long id) InvoiceDto invoice = invoiceService.findById(id); // your logic byte[] pdfBytes = pdfService.generateInvoicePdf(invoice); It explains the "natural templates" concept in depth,
Handling file uploads, pagination, and multi-language support.
You enter the "taming" phase.
Ensuring reliability with unit, integration, and end-to-end Cypress tests. About the Author: Wim Deblauwe Release Taming Thymeleaf book - Wim Deblauwe
// 4. Font configuration (important for non-ASCII characters) renderer.getFontResolver().addFont( "/fonts/DejaVuSans.ttf", BaseFont.IDENTITY_H, BaseFont.EMBEDDED );