how to hide this button during convert of html page to pdf using iText in Spring Boot and Thymleaf - spring

Question

I am facing problem during pdf generation when I am converting html page into pdf that time button is also showing, but requirement is button should not be show but button should be on same page and after click PDF should be generate. I am using iText for Pdf generation. I am using Thymeleaf and Spring Boot.
I have used this code for pdf generation.
#RequestMapping("download-pdf/{refno}")
public ResponseEntity<?> getPDF(HttpServletRequest request, HttpServletResponse response,#PathVariable("refno") Long refno) throws IOException, IllegalAccessException, InvocationTargetException {
complaintDto = complaintRepo.findById(refno).orElse(null);
complaintPdfBean = pdfService.getComplaintInfo(complaintDto);
WebContext context = new WebContext(request, response, servletContext);
context.setVariable("complaintPdfBean", complaintPdfBean);
String grievanceHtml = templateEngine.process("complant-privew", context);
ByteArrayOutputStream target = new ByteArrayOutputStream();
ConverterProperties converterProperties = new ConverterProperties();
converterProperties.setBaseUri("http://localhost:8080");
HtmlConverter.convertToPdf(grievanceHtml, target, converterProperties);
byte[] bytes = target.toByteArray();
return ResponseEntity.ok().header(HttpHeaders.CONTENT_DISPOSITION, "attachment; filename=grievance.pdf")
.contentType(MediaType.APPLICATION_PDF).body(bytes);
}
I am using this maven dependency in pom.xml file:
<dependency>
<groupId>com.itextpdf</groupId>
<artifactId>itext7-core</artifactId>
<version>7.1.0</version>
<type>pom</type>
</dependency>
<dependency>
<groupId>com.itextpdf</groupId>
<artifactId>html2pdf</artifactId>
<version>2.0.0</version>
</dependency>
<!-- pdf dependency -->

Answer 1

Wrap your button with a <th:block> and an th:unless statement:
<th:block th:unless="${isPdfExport}">
...
</th:block>
Set the isPdfExport context variable to true just before the PDF generation.