spring boot 转pdf (html转pdf)

1.引入maven

<dependency>
<groupId>org.apache.velocity</groupId>
<artifactId>velocity</artifactId>
<version>1.7</version>
</dependency>

<dependency>
<groupId>com.itextpdf</groupId>
<artifactId>html2pdf</artifactId>
<version>4.0.3</version>
</dependency>
<dependency>
<groupId>com.itextpdf</groupId>
<artifactId>font-asian</artifactId>
<version>7.2.3</version>
</dependency>

2.工具类

public class PdfUtil {

static {
// Velocity初始化
Velocity.setProperty(RuntimeConstants.OUTPUT_ENCODING, StandardCharsets.UTF_8);
Velocity.setProperty(RuntimeConstants.INPUT_ENCODING, StandardCharsets.UTF_8);
Velocity.setProperty(RuntimeConstants.RESOURCE_LOADER, "classpath");
Velocity.setProperty("classpath.resource.loader.class", ClasspathResourceLoader.class.getName());
Velocity.init();
}

/**
* 据模板生成pfd格式文件
* @param context 上下文对象
* @param template pdf模板
* @param outputStream 生成ofd文件输出流
*/
public static void pdfFile(Context context, String template, OutputStream outputStream) {
try (PdfWriter pdfWriter = new PdfWriter(outputStream)) {
PdfDocument pdfDocument = new PdfDocument(pdfWriter);
pdfDocument.setDefaultPageSize(PageSize.A4);

ConverterProperties properties = new ConverterProperties();
FontProvider fontProvider = new FontProvider();
// 字体设置，解决中文不显示问题
PdfFont sysFont = PdfFontFactory.createFont("STSongStd-Light", "UniGB-UCS2-H");
fontProvider.addFont(sysFont.getFontProgram(), "UniGB-UCS2-H");
properties.setFontProvider(fontProvider);

Template pfdTemplate = Velocity.getTemplate(template, "UTF-8");
StringWriter writer = new StringWriter();
pfdTemplate.merge(context, writer);
HtmlConverter.convertToPdf(writer.toString(), pdfDocument, properties);
pdfDocument.close();
} catch (Exception e) {
throw new RuntimeException("PFD文件生成失败", e);
}
}

}

3.工具类调用

@GetMapping("/downDetailPdf")
@ApiOperation(value = "导出对账单详情pdf", notes = "导出对账单详情pdf)")
public void downDetailPdf(StatementLinePageRequest request, HttpServletResponse response)  {String statementCode = request.getStatementCode();String companyId = request.getCompanyId();if (StringUtils.isEmpty(statementCode) && StringUtils.isEmpty(statementCode)) {throw new RuntimeException(EnterpriseExcelptionEnum.PARAM_NULL.getMsg());}try {XLBaseResponse<StatementHeaderResponse> statementResponse = statementService.getStatementResponse(statementCode, companyId);if(!statementResponse.isOk() || null == statementResponse.getBody()){throw new RuntimeException("对账单不存在");}XLBaseResponse<StatementDetailPageResponse> detailPage = statementService.getDetailPage(statementCode, companyId, request);if(detailPage.isOk()){StatementDetailPageResponse body = detailPage.getBody();VelocityContext context = new VelocityContext();StatementHeaderResponse top = statementResponse.getBody();context.put("top", top);context.put("lines", 集合);String fileName = new String("对账单详情-".getBytes(), "ISO-8859-1") + DateUtil.format(new Date(), DatePattern.NORM_DATETIME_PATTERN) + ".pdf";response.setContentType("application/vnd.ms-excel");response.setCharacterEncoding("utf8");response.setHeader("Content-Disposition", "attachment; filename=" + fileName);response.setHeader("Cache-Control", "no-store");response.addHeader("Cache-Control", "max-age=0");PdfUtil.pdfFile(context,"templates/statementDetailsPdf.html", response.getOutputStream());}} catch (Exception e) {log.info("导出对账单详情pdf-异常：",e);throw new RuntimeException(EnterpriseExcelptionEnum.EXECUTE_FAILED.getMsg());}
}

4.html模板

<!DOCTYPE html>
<html lang="en">
<head><meta charset="UTF-8"><title>Title</title>
</head><body><div class="ant-spin-container"><table><tr><td class="code">对账单编号:</td><td class="code">$!{top.statementCode}</td><td style="width: 176px;"><div class="status">$!{top.statementStatus}</div></td></tr></table></div>#if( !$orderChange)<div class="a1"><span class="src-display-modules-ReconciliationCollaboration-components-Modification-index__title--2ferw">本单有变更：</span><div class="src-display-modules-ReconciliationCollaboration-components-Modification-index__modificationData--2ViAS"><div class="src-display-modules-ReconciliationCollaboration-components-Modification-index__modificationItem--1nVb4">#foreach($order in $orderChange)<img src="templates/img/xxx.png" class="src-display-modules-ReconciliationCollaboration-components-Modification-index__linkIcon--G_CVd"><span>$order.statementCode</span><span class="src-display-modules-ReconciliationCollaboration-components-Modification-index__status--3LcrS">#if(!$line.statementStatus == 'DRAFT')草稿#elseif(!$line.statementStatus == 'SENT')已发送#elseif(!$line.statementStatus == 'RECEIVED')已接收#elseif(!$line.statementStatus == 'PART_ACCEPTED')部分确认#elseif(!$line.statementStatus == 'ACCEPTED')全部确认#elseif(!$line.statementStatus == 'SENT_FAIL')发送失败#else拒绝#end</span>#end</div></div></div>#end<div class="src-display-modules-ReconciliationCollaboration-Payables-Detail-index__statistic--uYrBi"><div class="src-display-modules-ReconciliationCollaboration-Payables-Detail-index__title--YJ_hx">统计</div><div class="src-display-modules-ReconciliationCollaboration-Payables-Detail-index__statisticData--Zxjwg"><div class="src-display-modules-ReconciliationCollaboration-Payables-Detail-index__statisticLabel--278xi"><div>总条目</div><div>总税额</div><div>总金额(不含税)</div><div>价税合计</div></div><div class="src-display-modules-ReconciliationCollaboration-Payables-Detail-index__statisticValue--agxcR"><div>$!{top.totalEntries}</div><div>$!{top.taxAmount}</div><div>$!{top.detailAmount}</div><div>$!{top.totalAmount}</div></div></div></div><div class="src-display-modules-ReconciliationCollaboration-Payables-Detail-index__dataList--3C17F"><div class="ant-spin-nested-loading"><table class="ant-table-fixed" style="width: max-content; "><tbody class="ant-table-tbody">#foreach($line in $lines)<tr class="ant-table-row ant-table-row-level-0" data-row-key="886490"><td class="" style="text-align: center;"><span class="ant-table-row-indent indent-level-0" style="padding-left: 0px;"></span><span>$line.lineNum</span></td><td class="" style="text-align: center;"><div style="color: rgb(153, 153, 153);">$line.changeFlag</div></td><td class="" style="text-align: center;"><div class="ellipsisText" style="width: 136px;"><span>#if(!$line.isConfirm == 1)待确认#elseif(!$line.isConfirm == 2)已确认#else拒绝#end</span></div></td><td class=""><div class="ellipsisText" style="width: 200px;"><span>$line.goodsCode</span></div></td></tr>#end</tbody></table></div></div></body>
</html>

注意