In my application Employee(Entity) can have many Document(Entity). An employee can upload his documents on my website. I want to give a view option to the employees to see all his documents. I can show only one document in the browser whenever the user clicks on the view button. But I don't know how to show all documents all together in the browser whenever a user clicks on the view button.

Here is my code for showing only one document.

@GetMapping("/showDocument")
    public ResponseEntity<byte[]> showDocument(
            @RequestParam("employeeId") int employeeId
    ) throws IOException, SQLException {

        Employee employee = employeeService.findById(employeeId);
        HttpHeaders httpHeaders = new HttpHeaders();
        ResponseEntity<byte[]> responseEntity = null;
        if (employee != null && employee.getDocuments() != null) {
            Document document = employee.getDocuments().get(0);
            InputStream inputStream = document.getContent().getBinaryStream();
            httpHeaders.setCacheControl(CacheControl.noCache().getHeaderValue());
            httpHeaders.set(CONTENT_TYPE, document.getContentType());
            byte[] media = IOUtils.toByteArray(inputStream);
            responseEntity = new ResponseEntity<>(media, httpHeaders, HttpStatus.OK);
        }
        return responseEntity;
    }