java导出pdf（纯代码实现）
时间：2024-04-09 16:40:25 来源：网络cs 作者：付梓 栏目：跨境学堂 阅读：
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java导出pdf
在项目开发中，产品的需求越来越奇葩啦，开始文件下载都是下载为excel的，做着做着需求竟然变了，要求能导出pdf。导出pdf倒也不是特别大的问题关键就是麻烦。
导出pdf我知道的一共有3中方法：
方法一：利用模板导出，但是首先编辑模板的工具不好找，现有的国外的工具要收费，所以放弃了这个。
方法二：利用HTML页面导出，奈何自己不会写HTML，前端忙没时间帮忙写。本着求人不如靠己的想法就选择了第三种比较麻烦的方法，自己用table画。
方法三：自己用纯代码画格式（可调字体大小，颜色，对复杂没有规则的数据都可以）
首先必须导入的依赖有
<!--导出pdf所需包--> <dependency> <groupId>com.itextpdf</groupId> <artifactId>itextpdf</artifactId> <version>5.5.10</version> </dependency> <dependency> <groupId>com.itextpdf</groupId> <artifactId>itext-asian</artifactId> <version>5.2.0</version> </dependency>然后就是一顿代码输出
先把效果贴上
然后是代码部分
@ApiOperation(value = "导出") @PostMapping("/download") @SneakyThrows(Exception.class) public void download(@RequestBody @Valid FumigationDTO fumigationDTO, HttpServletResponse response, HttpServletRequest request) { // 防止日志记录获取session异常 request.getSession(); // 设置编码格式 response.setContentType("application/pdf;charset=UTF-8"); response.setCharacterEncoding("utf-8"); String fileName = URLEncoder.encode("下载的PDF名称", "UTF-8"); response.setHeader("Content-disposition", "attachment;filename*=utf-8''" + fileName + ".pdf"); fumigationService.download(fumigationDTO, response); }业务层
@Override public void download(FumigationDTO fumigationDTO, HttpServletResponse response) throws IOException { //要下载的数据查询数据部分我去掉了有需要自己根据业务取 FumigationDowloadVO fumigationDowloadVO = new FumigationDowloadVO(); // 定义全局的字体静态变量 Font titlefont; Font headfont; Font keyfont = null; Font textfont = null; Font content = null; // 最大宽度 try { // 不同字体（这里定义为同一种字体：包含不同字号、不同style） BaseFont bfChinese = BaseFont.createFont("STSong-Light", "UniGB-UCS2-H", BaseFont.NOT_EMBEDDED); titlefont = new Font(bfChinese, 16, Font.BOLD); headfont = new Font(bfChinese, 14, Font.BOLD); keyfont = new Font(bfChinese, 10, Font.BOLD); textfont = new Font(bfChinese, 15, Font.NORMAL); content = new Font(bfChinese, 10, Font.NORMAL); } catch (Exception e) { e.printStackTrace(); } BaseFont bf; Font font = null; try { //创建字体 bf = BaseFont.createFont( "STSong-Light", "UniGB-UCS2-H", BaseFont.NOT_EMBEDDED); //使用字体并给出颜色 font = new Font(bf,20,Font.BOLD,BaseColor.BLACK); } catch (Exception e) { e.printStackTrace(); } Document document = new Document(new RectangleReadOnly(842F, 595F)); //设置页边距 60:左边距，60：右边距，72：上边距，72：下边距 document.setMargins(60, 60, 72, 72); try { PdfWriter writer = PdfWriter.getInstance(document,response.getOutputStream()); //添加页码 writer.setPageEvent(new PdfPageUtil()); //打开生成的pdf文件 document.open(); //设置内容 Paragraph paragraph = new Paragraph("熏蒸备案回执",font); paragraph.setAlignment(1); //引用字体 document.add(paragraph); // 设置表格的列宽和列数 float[] widths = {25f,25f,25f,25f,25f,25f}; PdfPTable table = new PdfPTable(widths); table.setSpacingBefore(20f); // 设置表格宽度为100% table.setWidthPercentage(100.0F); table.setHeaderRows(1); table.getDefaultCell().setHorizontalAlignment(1); PdfPCell cell = null; //第一行 cell = new PdfPCell(new Paragraph("熏蒸备案编码",content)); cell.setVerticalAlignment(Element.ALIGN_MIDDLE); cell.setHorizontalAlignment(Element.ALIGN_CENTER); cell.setFixedHeight(30); table.addCell(cell); cell = new PdfPCell(new Paragraph(fumigationDowloadVO.getXzbm())); cell.setVerticalAlignment(Element.ALIGN_MIDDLE); cell.setHorizontalAlignment(Element.ALIGN_CENTER); table.addCell(cell); cell = new PdfPCell(new Paragraph("熏蒸备案时间",content)); cell.setVerticalAlignment(Element.ALIGN_MIDDLE); cell.setHorizontalAlignment(Element.ALIGN_CENTER); table.addCell(cell); cell = new PdfPCell(new Paragraph(CheckVerifyUtil.dateToString4(fumigationDowloadVO.getSqxzrq()))); cell.setVerticalAlignment(Element.ALIGN_MIDDLE); cell.setHorizontalAlignment(Element.ALIGN_CENTER); table.addCell(cell); cell = new PdfPCell(new Paragraph("申请备案单位",content)); cell.setVerticalAlignment(Element.ALIGN_MIDDLE); cell.setHorizontalAlignment(Element.ALIGN_CENTER); table.addCell(cell); cell = new PdfPCell(new Paragraph(fumigationDowloadVO.getDwmc(),content)); cell.setVerticalAlignment(Element.ALIGN_MIDDLE); cell.setHorizontalAlignment(Element.ALIGN_CENTER); table.addCell(cell); //第二行 cell = new PdfPCell(new Paragraph("熏蒸作业库点",content)); cell.setVerticalAlignment(Element.ALIGN_MIDDLE); cell.setHorizontalAlignment(Element.ALIGN_CENTER); cell.setFixedHeight(30); table.addCell(cell); cell = new PdfPCell(new Paragraph(fumigationDowloadVO.getKdmc(),content)); cell.setVerticalAlignment(Element.ALIGN_MIDDLE); cell.setHorizontalAlignment(Element.ALIGN_CENTER); table.addCell(cell); cell = new PdfPCell(new Paragraph("负责人",content)); cell.setVerticalAlignment(Element.ALIGN_MIDDLE); cell.setHorizontalAlignment(Element.ALIGN_CENTER); table.addCell(cell); cell = new PdfPCell(new Paragraph(fumigationDowloadVO.getFzr(),content)); cell.setVerticalAlignment(Element.ALIGN_MIDDLE); cell.setHorizontalAlignment(Element.ALIGN_CENTER); table.addCell(cell); cell = new PdfPCell(new Paragraph("联系电话",content)); cell.setVerticalAlignment(Element.ALIGN_MIDDLE); cell.setHorizontalAlignment(Element.ALIGN_CENTER); table.addCell(cell); cell = new PdfPCell(new Paragraph(fumigationDowloadVO.getFzrdh(),content)); cell.setVerticalAlignment(Element.ALIGN_MIDDLE); cell.setHorizontalAlignment(Element.ALIGN_CENTER); table.addCell(cell); //第三行 cell = new PdfPCell(new Paragraph("单据状态",content)); cell.setVerticalAlignment(Element.ALIGN_MIDDLE); cell.setHorizontalAlignment(Element.ALIGN_CENTER); cell.setFixedHeight(30); table.addCell(cell); cell = new PdfPCell(new Paragraph(shzt(fumigationDowloadVO.getShzt()),content)); cell.setVerticalAlignment(Element.ALIGN_MIDDLE); cell.setHorizontalAlignment(Element.ALIGN_CENTER); table.addCell(cell); cell = new PdfPCell(new Paragraph("审核时间",content)); cell.setVerticalAlignment(Element.ALIGN_MIDDLE); cell.setHorizontalAlignment(Element.ALIGN_CENTER); table.addCell(cell); cell = new PdfPCell(new Paragraph(CheckVerifyUtil.dateToString5(fumigationDowloadVO.getShsj()),content)); cell.setVerticalAlignment(Element.ALIGN_MIDDLE); cell.setHorizontalAlignment(Element.ALIGN_CENTER); table.addCell(cell); cell = new PdfPCell(new Paragraph(" ",content)); cell.setVerticalAlignment(Element.ALIGN_MIDDLE); cell.setHorizontalAlignment(Element.ALIGN_CENTER); table.addCell(cell); cell = new PdfPCell(new Paragraph(" ",content)); cell.setVerticalAlignment(Element.ALIGN_MIDDLE); cell.setHorizontalAlignment(Element.ALIGN_CENTER); table.addCell(cell); // 设置表格的列宽和列数 float[] widths2 = {25f,25f,25f,25f,25f,25f}; PdfPTable table2 = new PdfPTable(widths2); table2.setSpacingBefore(20f); // 设置表格宽度为100% table2.setWidthPercentage(100.0F); table2.setHeaderRows(1); table2.getDefaultCell().setHorizontalAlignment(1); //人员列表-第四行 cell = new PdfPCell(new Paragraph("姓名",content)); cell.setVerticalAlignment(Element.ALIGN_MIDDLE); cell.setHorizontalAlignment(Element.ALIGN_CENTER); cell.setFixedHeight(20); table2.addCell(cell); cell = new PdfPCell(new Paragraph("职务",content)); cell.setVerticalAlignment(Element.ALIGN_MIDDLE); cell.setHorizontalAlignment(Element.ALIGN_CENTER); table2.addCell(cell); cell = new PdfPCell(new Paragraph("职业资格",content)); cell.setVerticalAlignment(Element.ALIGN_MIDDLE); cell.setHorizontalAlignment(Element.ALIGN_CENTER); table2.addCell(cell); cell = new PdfPCell(new Paragraph("身体状况",content)); cell.setVerticalAlignment(Element.ALIGN_MIDDLE); cell.setHorizontalAlignment(Element.ALIGN_CENTER); table2.addCell(cell); cell = new PdfPCell(new Paragraph("熏蒸任务分工",content)); cell.setVerticalAlignment(Element.ALIGN_MIDDLE); cell.setHorizontalAlignment(Element.ALIGN_CENTER); table2.addCell(cell); cell = new PdfPCell(new Paragraph("是否外包",content)); cell.setVerticalAlignment(Element.ALIGN_MIDDLE); cell.setHorizontalAlignment(Element.ALIGN_CENTER); table2.addCell(cell); //人员列表数据-第五行 if(fumigationDowloadVO.getProples().size() > 0){ for (RecordFumigationPeople prople : fumigationDowloadVO.getProples()) { PdfPCell cell1 = new PdfPCell(new Paragraph(prople.getXm(), content)); PdfPCell cell2 = new PdfPCell(new Paragraph(prople.getZw(), content)); PdfPCell cell3 = new PdfPCell(new Paragraph(prople.getZyzg(), content)); PdfPCell cell4 = new PdfPCell(new Paragraph(prople.getStzk(), content)); PdfPCell cell5 = new PdfPCell(new Paragraph(prople.getXzrwfg(), content)); PdfPCell cell6 = new PdfPCell(new Paragraph(prople.getSfwb(), content)); //单元格对齐方式 cell1.setHorizontalAlignment(Element.ALIGN_CENTER); cell1.setVerticalAlignment(Element.ALIGN_MIDDLE); cell1.setFixedHeight(20); //单元格垂直对齐方式 cell2.setHorizontalAlignment(Element.ALIGN_CENTER); cell2.setVerticalAlignment(Element.ALIGN_MIDDLE); cell3.setHorizontalAlignment(Element.ALIGN_CENTER); cell3.setVerticalAlignment(Element.ALIGN_MIDDLE); cell4.setHorizontalAlignment(Element.ALIGN_CENTER); cell4.setVerticalAlignment(Element.ALIGN_MIDDLE); cell5.setHorizontalAlignment(Element.ALIGN_CENTER); cell5.setVerticalAlignment(Element.ALIGN_MIDDLE); cell6.setHorizontalAlignment(Element.ALIGN_CENTER); cell6.setVerticalAlignment(Element.ALIGN_MIDDLE); table2.addCell(cell1); table2.addCell(cell2); table2.addCell(cell3); table2.addCell(cell4); table2.addCell(cell5); table2.addCell(cell6); } } // 设置表格的列宽和列数 float[] widths3 = {25f,25f,25f,25f,25f}; PdfPTable table3 = new PdfPTable(widths3); table3.setSpacingBefore(20f); // 设置表格宽度为100% table3.setWidthPercentage(100.0F); table3.setHeaderRows(1); table3.getDefaultCell().setHorizontalAlignment(1); //实施储粮信息 cell = new PdfPCell(new Paragraph("仓房",content)); cell.setVerticalAlignment(Element.ALIGN_MIDDLE); cell.setHorizontalAlignment(Element.ALIGN_CENTER); cell.setFixedHeight(20); table3.addCell(cell); cell = new PdfPCell(new Paragraph("货位",content)); cell.setVerticalAlignment(Element.ALIGN_MIDDLE); cell.setHorizontalAlignment(Element.ALIGN_CENTER); table3.addCell(cell); cell = new PdfPCell(new Paragraph("粮食品种",content)); cell.setVerticalAlignment(Element.ALIGN_MIDDLE); cell.setHorizontalAlignment(Element.ALIGN_CENTER); table3.addCell(cell); cell = new PdfPCell(new Paragraph("计划熏蒸开始时间",content)); cell.setVerticalAlignment(Element.ALIGN_MIDDLE); cell.setHorizontalAlignment(Element.ALIGN_CENTER); table3.addCell(cell); cell = new PdfPCell(new Paragraph("计划熏蒸结束时间",content)); cell.setVerticalAlignment(Element.ALIGN_MIDDLE); cell.setHorizontalAlignment(Element.ALIGN_CENTER); table3.addCell(cell); if(fumigationDowloadVO.getDtls().size() > 0){ for (RecordFumigationDtlVO dtl : fumigationDowloadVO.getDtls()) { PdfPCell cell1 = new PdfPCell(new Paragraph(dtl.getCfmc(), content)); PdfPCell cell2 = new PdfPCell(new Paragraph(dtl.getHwmc(), content)); PdfPCell cell3 = new PdfPCell(new Paragraph(dtl.getLspzmc(), content)); PdfPCell cell4 = new PdfPCell(new Paragraph(CheckVerifyUtil.dateToString4(dtl.getJhxzksrq()), content)); PdfPCell cell5 = new PdfPCell(new Paragraph(CheckVerifyUtil.dateToString4(dtl.getJhxzjsrq()), content)); //设置居中 cell1.setHorizontalAlignment(Element.ALIGN_CENTER); cell1.setVerticalAlignment(Element.ALIGN_MIDDLE); cell1.setFixedHeight(20); cell2.setHorizontalAlignment(Element.ALIGN_CENTER); cell2.setVerticalAlignment(Element.ALIGN_MIDDLE); cell3.setHorizontalAlignment(Element.ALIGN_CENTER); cell3.setVerticalAlignment(Element.ALIGN_MIDDLE); cell4.setHorizontalAlignment(Element.ALIGN_CENTER); cell4.setVerticalAlignment(Element.ALIGN_MIDDLE); cell5.setHorizontalAlignment(Element.ALIGN_CENTER); cell5.setVerticalAlignment(Element.ALIGN_MIDDLE); table3.addCell(cell1); table3.addCell(cell2); table3.addCell(cell3); table3.addCell(cell4); table3.addCell(cell5); } } document.add(new Paragraph("\n")); document.add(new Paragraph("▋ 基本信息",content)); document.add(new Paragraph("\n")); document.add(table); document.add(new Paragraph("\n")); document.add(new Paragraph("▋ 基本信息",content)); document.add(new Paragraph("\n")); document.add(table2); document.add(new Paragraph("\n")); document.add(new Paragraph("▋ 熏蒸作业储粮粮情",content)); document.add(new Paragraph("\n")); document.add(table3);//关闭文档 document.close(); } catch (DocumentException e) { e.printStackTrace(); log.error("导出pdf失败:{}",e); } }（二）2023-08-24 更新导出PDF无表格
效果：内容全部为代码实现
贴上代码：
@SneakyThrows @PostMapping("/rectification/notice/export") @ApiOperation("xxxx通知导出") public void registrationNoticeExport(@RequestBody InspectionPlanDtlListDTO reqParam, HttpServletRequest request, HttpServletResponse response) { request.getSession(); if (StringUtils.isBlank(reqParam.getId())) { throw new CustomException("id不能为空"); } String year = String.valueOf(Calendar.getInstance().get(Calendar.YEAR)); ExpertSignInExportVO vo = inspectionProblemService.registrationNoticeExport(reqParam.getId()); if(NoticeCoeEnum.getIdList().contains(vo.getId())){ vo.setDate("2023年08月18日"); }else { vo.setDate(DateUtil.date().toString(DatePattern.CHINESE_DATE_PATTERN)); } // 检查单位 List<InspectionPlanUnitVO> planUnitList = inspectionPlanUnitRelationMapper.selectByPlanId(vo.getPlanId()); vo.setInspectionCompany(planUnitList.stream().map(InspectionPlanUnitVO::getUnitName).collect(Collectors.joining("、"))); vo.setYear(year); Field[] fields = vo.getClass().getDeclaredFields(); HashMap<String, String> dataMap = new HashMap<>(fields.length); for (Field field : fields) { field.setAccessible(true); dataMap.put("${" + field.getName() + "}", String.valueOf(field.get(vo))); } if (StringUtils.isNotBlank(vo.getInspectionTeamLeader()) || StringUtils.isNotBlank(vo.getInspectorPhone())) { dataMap.put("${inspectionTeamLeaderInfo}", String.format("（联系人：%s；联系电话：%s）", vo.getInspectionTeamLeader(), StringUtils.isNotBlank(vo.getOfficePhone()) ? vo.getOfficePhone() : vo.getInspectorPhone())); } dataMap.put("${attachmentNameStr}", " " + String.join("\n ", vo.getAttachmentNameList())); //导出pdf PdfUtil.setResponseContentType(response, vo.getInspectedEnterprise() + vo.getPlanName() + "检查整改通知" + year);// PdfUtil.fillWordTemplate("template/rectification_notice.pdf", dataMap, response); PdfUtil.downloadPdf(dataMap,response);// String fileName = vo.getInspectedEnterprise() + vo.getPlanName() + "检查整改通知" + year;// //导出excel// WordUtil.setResponseContentType(response, fileName);// WordUtil.fillWordTemplate("template/rectification_notice.docx", dataMap, response.getOutputStream(),Boolean.TRUE); }导出pdf工具
public static void setResponseContentType(HttpServletResponse response, String fileName) throws UnsupportedEncodingException { response.setContentType("application/pdf"); response.setCharacterEncoding("utf-8"); response.setHeader("Content-Disposition", "attachment;filename=" + URLEncoder.encode(fileName, "utf-8") + ".pdf"); response.setHeader("Access-Control-Expose-Headers", "Content-Disposition"); }public static void downloadPdf(Map<String,String> dataMap, HttpServletResponse response){ // 定义全局的字体静态变量 Font titlefont; Font headfont; Font keyfont = null; Font textfont = null; Font content = null; Font space = null; Font space1 = null; Font space2 = null; Font space3 = null; // 最大宽度 try { // 不同字体（这里定义为同一种字体：包含不同字号、不同style） BaseFont bfChinese = BaseFont.createFont("STSong-Light", "UniGB-UCS2-H", BaseFont.NOT_EMBEDDED); titlefont = new Font(bfChinese, 16, Font.BOLD); headfont = new Font(bfChinese, 14, Font.BOLD); keyfont = new Font(bfChinese, 22, Font.BOLD); textfont = new Font(bfChinese, 15, Font.NORMAL); content = new Font(bfChinese, 16, Font.NORMAL); space = new Font(bfChinese, 5, Font.NORMAL); space1 = new Font(bfChinese, 20, Font.NORMAL); space2 = new Font(bfChinese, 20, Font.NORMAL); space3 = new Font(bfChinese, 3, Font.NORMAL); } catch (Exception e) { e.printStackTrace(); } BaseFont bf; Font font = null; try { //创建字体 bf = BaseFont.createFont( "STSong-Light", "UniGB-UCS2-H", BaseFont.NOT_EMBEDDED); //使用字体并给出颜色 font = new Font(bf,36,Font.BOLD, BaseColor.RED); } catch (Exception e) { e.printStackTrace(); } Document document = new Document(new Rectangle(com.itextpdf.text.PageSize.A4)); try { com.itextpdf.text.pdf.PdfWriter.getInstance(document, response.getOutputStream()); //打开PDF文件 document.open(); //设置内容 Paragraph paragraph = new Paragraph("深圳市粮食和物资储备保障中心", font); //居中设置 paragraph.setAlignment(Element.ALIGN_CENTER); document.add(paragraph); //页眉横线 document.add(new Paragraph("\n", space2)); LineSeparator line = new LineSeparator(3f, 100, BaseColor.RED, Element.ALIGN_CENTER, 0f); document.add(line); document.add(new Paragraph("\n", space3)); LineSeparator lineStart = new LineSeparator(1f, 100, BaseColor.RED, Element.ALIGN_CENTER, 0f); document.add(lineStart); document.add(new Paragraph("\n", space)); String text = "深储整改〔 " + dataMap.get("${year}") + "〕" + dataMap.get("${sort}") + "号"; Paragraph paragraph0 = new Paragraph(text, content); paragraph0.setAlignment(Element.ALIGN_RIGHT); document.add(paragraph0); document.add(new Paragraph("\n")); Paragraph paragraph1 = new Paragraph(dataMap.get("${inspectionCompany}") + "关于", keyfont); paragraph1.setAlignment(Element.ALIGN_CENTER); document.add(paragraph1); document.add(new Paragraph("\n", space)); String concent = dataMap.get("${planName}") + "发现问题整改的通知"; Paragraph paragraph2 = new Paragraph(concent, keyfont); paragraph2.setAlignment(Element.ALIGN_CENTER); document.add(paragraph2); document.add(new Paragraph("\n")); Paragraph paragraph3 = new Paragraph(dataMap.get("${qymc}") + ":", content); paragraph3.setAlignment(Element.ALIGN_LEFT); document.add(paragraph3); document.add(new Paragraph("\n", space)); String concent1 = " 现将" + dataMap.get("${kdmc}") + dataMap.get("${planName}") + "检查发现问题及整改要求转给你司，请严格按期限要求进行整改，并将整改落实情况(含佐证材料及附件)通过深圳市粮食和物资储备信息管理平台反馈我中心。"; Paragraph paragraph4 = new Paragraph(concent1, content); //设置首行缩进 paragraph4.setIndentationRight(2); document.add(paragraph4); document.add(new Paragraph("\n", space)); Paragraph paragraph5 = new Paragraph(" 特此通知。", content); paragraph5.setIndentationRight(2);//右缩进2格 document.add(paragraph5); document.add(new Paragraph("\n", space1)); document.add(new Paragraph("\n", space1)); //附件 Paragraph paragraph6 = new Paragraph(" 附件:", content); paragraph6.setIndentationRight(2);//右缩进2格 document.add(paragraph6); document.add(new Paragraph("\n", space)); Paragraph paragraph7 = new Paragraph(dataMap.get("${attachmentNameStr}"), content); document.add(paragraph7); document.add(new Paragraph("\n", space1)); document.add(new Paragraph("\n", space1)); document.add(new Paragraph("\n", space1)); //日期 Paragraph paragraph8 = new Paragraph(dataMap.get("${date}"), content); //向右 paragraph8.setAlignment(Element.ALIGN_RIGHT); document.add(paragraph8); document.add(new Paragraph("\n", space1)); //落款 Paragraph paragraph9 = new Paragraph(dataMap.get("${inspectionTeamLeaderInfo}"), content); paragraph9.setAlignment(Element.ALIGN_CENTER); document.add(paragraph9); //页尾横线 document.add(new Paragraph("\n", space2)); document.add(new Paragraph("\n", space2)); LineSeparator lineEnd = new LineSeparator(3f, 100, BaseColor.RED, Element.ALIGN_CENTER, 0f); document.add(lineEnd); document.add(new Paragraph("\n", space3)); LineSeparator lineEnd1 = new LineSeparator(1f, 100, BaseColor.RED, Element.ALIGN_CENTER, 0f); document.add(lineEnd1); //关闭文档 document.close(); } catch (Exception e) { e.printStackTrace(); log.error("导出pdf失败：{}", e); } }更新于2023-12-15，更新内容：导出PDF增加页码和设置页边距
以下为效果图：
package com.sydata.zt.common.pdf;import com.itextpdf.text.*;import com.itextpdf.text.pdf.*;import java.io.IOException;/** * @Author xx * @Date 2023/12/15 10:05 * @Description: 导出pdf添加页数 * @Version 1.0 */public class PdfPageUtil extends PdfPageEventHelper { /** * 页眉 */ //public String header = "itext测试页眉"; /** * 文档字体大小，页脚页眉最好和文本大小一致 */ public int presentFontSize = 15; /** * 文档页面大小，最好前面传入，否则默认为A4纸张 */ public Rectangle pageSize = PageSize.A4; // 模板 public PdfTemplate total; // 基础字体对象 public BaseFont bf = null; // 利用基础字体生成的字体对象，一般用于生成中文文字 public Font fontDetail = null; /** * * 无参构造方法. * */ public PdfPageUtil() { } /** * * 构造方法. * * @param * * @param presentFontSize * 数据体字体大小 * @param pageSize * 页面文档大小，A4，A5，A6横转翻转等Rectangle对象 */ public PdfPageUtil( int presentFontSize, Rectangle pageSize) { this.presentFontSize = presentFontSize; this.pageSize = pageSize; } public void setPresentFontSize(int presentFontSize) { this.presentFontSize = presentFontSize; } /** * * 文档打开时创建模板 */ @Override public void onOpenDocument(PdfWriter writer, Document document) { // 共 页 的矩形的长宽高 total = writer.getDirectContent().createTemplate(50, 50); } /** * *关闭每页的时候，写入页眉，写入'第几页共'这几个字。 */ @Override public void onEndPage(PdfWriter writer, Document document) { this.addPage(writer, document); } //加分页 public void addPage(PdfWriter writer, Document document){ //设置分页页眉页脚字体 try { if (bf == null) { bf = BaseFont.createFont("STSong-Light", "UniGB-UCS2-H", false); } if (fontDetail == null) { fontDetail = new Font(bf, presentFontSize, Font.NORMAL);// 数据体字体 } } catch (DocumentException e) { e.printStackTrace(); } catch (IOException e) { e.printStackTrace(); } // 1.写入页眉// ColumnText.showTextAligned(writer.getDirectContent(),// Element.ALIGN_LEFT, new Phrase(header, fontDetail),// document.left(), document.top() + 20, 0); // 2.写入前半部分的 第 X页/共 int pageS = writer.getPageNumber(); //String foot1 = "第 " + pageS + " 页 /共"; String foot1 = pageS +"/"; Phrase footer = new Phrase(foot1, fontDetail); // 3.计算前半部分的foot1的长度，后面好定位最后一部分的'Y页'这俩字的x轴坐标，字体长度也要计算进去 = len float len = bf.getWidthPoint(foot1, presentFontSize); // 4.拿到当前的PdfContentByte PdfContentByte cb = writer.getDirectContent(); // 5.写入页脚1，x轴就是(右margin+左margin + right() -left()- len)/2.0F ColumnText .showTextAligned( cb, Element.ALIGN_CENTER, footer, (document.rightMargin() + document.right() + document.leftMargin() - document.left() - len) / 2.0F , document.bottom() - 10, 0); cb.addTemplate(total, (document.rightMargin() + document.right() + document.leftMargin() - document.left()) / 2.0F , document.bottom() - 10); // 调节模版显示的位置 }// //加水印// public void addWatermark(PdfWriter writer){// // 水印图片// Image image;// try {// image = Image.getInstance("./web/images/001.jpg");// PdfContentByte content = writer.getDirectContentUnder();// content.beginText();// // 开始写入水印// for(int k=0;k<5;k++){// for (int j = 0; j <4; j++) {// image.setAbsolutePosition(150*j,170*k);// content.addImage(image);// }// }// content.endText();// } catch (IOException | DocumentException e) {// // TODO Auto-generated catch block// e.printStackTrace();// }// } /** * * 关闭文档时，替换模板，完成整个页眉页脚组件 */ @Override public void onCloseDocument(PdfWriter writer, Document document) { // 关闭文档的时候，将模板替换成实际的 Y 值 total.beginText(); // 生成的模版的字体、颜色 total.setFontAndSize(bf, presentFontSize); //页脚内容拼接 如 第1页/共2页 //String foot2 = " " + (writer.getPageNumber()) + " 页"; //页脚内容拼接 如 第1页/共2页 String foot2 = String.valueOf(writer.getPageNumber()); // 模版显示的内容 total.showText(foot2); total.endText(); total.closePath(); }}然后就可以了直接导出pdf。
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