Spring PDF viewer：无法加载pdf文档？

Question

我正在尝试在浏览器中显示pdf。但它无法正常显示错误“无法加载pdf文档”。我们使用Spring来显示PDF。这是我显示pdf的代码。任何人都可以帮我解决这个问题。

public <T> ResponseEntity<byte[]> generateReportByJavaList(List<T> listValues) {

        this.jasperPrint = null;
        try {
            File temp;
            if (StringUtils.isNotBlank(pdfFileName)) {
                temp = new File(pdfFileName);
            } else {
                temp = File.createTempFile(this.tempPrefix, ".pdf");
            }

            this.jasperPrint = JasperFillManager.fillReport(this.reportFile, this.params,
                    new JRBeanCollectionDataSource(listValues, false));

            JasperExportManager.exportReportToPdfFile(jasperPrint, temp.getAbsolutePath());

            HttpHeaders headers = new HttpHeaders();
            headers.setContentType(MediaType.parseMediaType("application/pdf"));
            Path p = Paths.get(temp.getAbsolutePath());
            String filename = p.getFileName().toString();
            headers.add("content-disposition", "inline;filename=" + filename);
            headers.setCacheControl("must-revalidate, post-check=0, pre-check=0");
            ResponseEntity<byte[]> response1 = new ResponseEntity<byte[]>( headers, HttpStatus.OK);
            return response1;
        } catch (IOException e) {
            System.out.println(e + "generateReportByJavaList :" + e.getMessage());
        } catch (JRException e) {
            System.out.println(e + "generateReportByJavaList :" + e.getMessage());
        }
        return null;
    }