SpringBoot pdf打印及预览(openhtmltopdf+freemarker)
- 增加依赖
openhtmltopdf+freemarker
<properties> <openhtml.version>1.0.10</openhtml.version> </properties><!--openhtmltopdf --> <dependencies> <dependency> <!-- ALWAYS required, usually included transitively. --> <groupId>com.openhtmltopdf</groupId> <artifactId>openhtmltopdf-core</artifactId> <version>${openhtml.version}</version> </dependency> <dependency> <!-- Required for PDF output. --> <groupId>com.openhtmltopdf</groupId> <artifactId>openhtmltopdf-pdfbox</artifactId> <version>${openhtml.version}</version> </dependency> <dependency> <!-- Optional, leave out if you do not need logging via slf4j. --> <groupId>com.openhtmltopdf</groupId> <artifactId>openhtmltopdf-slf4j</artifactId> <version>${openhtml.version}</version> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-freemarker</artifactId> </dependency> </dependencies>- 在/resources/template/view/html新建模板xxx.ftl文件
<html><head> <meta charset="UTF-8"/> <style> /* 特有css款式自行参考官网 */ @page { size: a4; @top-left { content: element(header-left); } @top-center { content: element(header-center); } @top-right { content: element(header-right); } @bottom-center { font-size: 14px; content: counter(page); font-family: 'simsun', serif; } margin: 50px; } * { margin: 0; padding: 0; font-family: 'simsun', serif; } #page-header-left { font-size: 10px; font-weight: bold; position: running(header-left); } #page-header-center { font-size: 10px; font-weight: bold; position: running(header-center); } #page-header-right { font-size: 10px; font-weight: bold; position: running(header-right); } table { width: 100%; font-size: 14px; border-collapse: collapse; font-family: 'simsun', serif; border-spacing: 0; /* The magical table pagination property. */ /*-fs-table-paginate: paginate;*/ /* Recommended to avoid leaving thead on a page by itself. */ -fs-page-break-min-height: 0.5cm; border-left: 0.07cm solid black; border-right: 0.07cm solid black; border-bottom: 0.03cm solid black; } .checkbox { display: inline-block; position: relative; top: 1px; width: 10px; height: 10px; border: 1px solid black; } .correct { display: inline-block; position: relative; top: 2px; right: 15px; width: 7px; height: 3px; border-left: 1px solid black; border-bottom: 1px solid black; -webkit-transform: rotate(-45deg); transform: rotate(-45deg); margin-right: -16px; } input[type = "checkbox"] { width: 10px; height: 10px; border: 1px solid black; } tr, thead, tfoot { page-break-inside: avoid; } td, th { page-break-inside: avoid; font-family: 'simsun', serif; padding: 1px; border-top: 0.03cm solid black; border-left: 0.03cm solid black; } td:first-child, th:first-child { border-left: 0; } #table-title { text-align: center; margin-top: 0; margin-bottom: 5px; font-weight: bold; } </style></head><body><div class="header-box"> <div id="page-header-left"> <span id="page-header-text">编号：<span style="font-weight: normal">${code!''}</span></span> </div> <div id="page-header-center"> <span id="page-header-text">工夫 <sup>1)</sup>：<span style="font-weight: normal">${time?date!''}</span></span> </div></div><div class="basic-box"> <table style="border-top: 0;"> <tr> <td>题目1</td> <td>${xx1!''}</td> <td>题目2</td> <td>${xx2!''}</td> <td>题目3</td> <td>${xx3!''}</td> </tr> <tr> <td style="font-weight: bold;text-align: left;">后果</td> <td colspan="3" style="text-align: left;"> <div> <div class="checkbox"></div> <#if result??&&result == '1'> <div class="correct"></div> </#if> <div style="display: inline-block">合格</div> <div class="checkbox"></div> <#if result??&&result == '0'> <div class="correct"></div> </#if> <div style="display: inline-block">不合格</div> </div> </td> <td colspan="4" style="font-weight: bold;text-align: left;">签字人：</td> </tr> </table></div></body></html>- controller接口
@RequestMapping(value = "/print/pdf/{code}", produces = MediaType.APPLICATION_PDF_VALUE) public ResponseEntity<byte[]> printPdf(@PathVariable("code") String detectCode) throws IOException, TemplateException { Assert.hasText(code, "code不能为空"); return detectReportPrintService.findPdf(code); }- service实现类
pdf预览有中文乱码，须要从新引入simsun.ttf字体文件，放在/resources/fonts文件夹下（与代码门路统一即可），ftl文件中css款式必须font-family: 'simsun', serif;
在
Configuration中能够应用上面的办法来不便建设三种模板加载。 (每种办法都会在其外部新建一个模板加载器对象，而后创立Configuration实例来应用它。)
1. void setDirectoryForTemplateLoading(File dir);
2. void setClassForTemplateLoading(Class cl, String prefix);
3. void setServletContextForTemplateLoading(Object servletContext, String path);
我的项目打包为jar包只能应用setClassForTemplateLoading办法。
public ResponseEntity<byte[]> findPdf(String code) throws IOException, TemplateException { //获取ftl所需变量值的自定义办法 Map data = this.findValue(code); //FreeMarker 生成 html字符串 Configuration conf = new Configuration(Configuration.VERSION_2_3_23); conf.setDefaultEncoding("UTF-8"); //加载模板文件(模板的门路) //有多种加载模板的办法 //我的项目打包为jar包只能应用setClassForTemplateLoading办法 //第一个参数：springboot启动类，第二个参数：ftl模板对应resources下的地位 conf.setClassForTemplateLoading(XaWebApplication.class, "/template/view/html"); // 加载模板 Template template = conf.getTemplate("/xxx.ftl"); //传入变量生成html字符串 String htmlString = FreeMarkerTemplateUtils.processTemplateIntoString(template, data ); //openhtmltopdf生成pdf @Cleanup ByteArrayOutputStream os = new ByteArrayOutputStream(); PdfRendererBuilder builder = new PdfRendererBuilder(); builder.withHtmlContent(htmlString, ""); builder.useFont(new FSSupplier<InputStream>() { @SneakyThrows @Override public InputStream supply() { return resourceLoader.getResource("classpath:fonts/simsun.ttf").getInputStream(); } }, "simsun"); builder.toStream(os); builder.run(); byte[] bytes = os.toByteArray(); return new ResponseEntity<>(bytes, HttpStatus.OK); }