依赖引入implementation("org.springframework.boot:spring-boot-starter-thymeleaf")implementation("org.xhtmlrenderer:flying-saucer-pdf")
将ITemplateEngine注入到spring管理的类中,
Context context = new Context();
context.setVariable("name", wasteDisposalSiteDTO.getName());
String processHtml= iTemplateEngine.process("hazardousWaste", context);//hazardousWaste是html模板文件路径,需要在配置文件中设置//spring:thymeleaf:prefix: classpath:/templates/ 基本路径//下载到浏览器// 设置响应类型 pdfresponse.setContentType(MediaType.APPLICATION_PDF_VALUE);// 设置响应编码response.setCharacterEncoding(StandardCharsets.UTF_8.name());response.setHeader(HttpHeaders.CONTENT_DISPOSITION, ContentDisposition.attachment().filename("1" + ".pdf", StandardCharsets.UTF_8).build().toString());// 使用ByteArrayOutputStream来捕获PDF字节流try (ByteArrayOutputStream os = new ByteArrayOutputStream()) {// 创建ITextRenderer对象ITextRenderer renderer = new ITextRenderer();ITextFontResolver fontResolver = renderer.getFontResolver();ClassPathResource classPathResource = new ClassPathResource("/font/simsun.ttc");//加载字体路径,避免生成的pdf加载不出来汉字。fontResolver.addFont(classPathResource.getPath(), BaseFont.IDENTITY_H, BaseFont.EMBEDDED);renderer.setDocumentFromString(processHtml);renderer.layout();renderer.createPDF(os);// 将生成的PDF字节流写入到HTTP响应的输出流中response.getOutputStream().write(os.toByteArray());response.getOutputStream().flush();} catch (DocumentException e) {e.printStackTrace();response.sendError(HttpServletResponse.SC_INTERNAL_SERVER_ERROR, "PDF generation failed");}
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