Java纯代码实现导出pdf
更新时间：2023年12月28日 14:03:52 作者：Xiao5xiao122
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,所以本文就来用Java实现导出pdf功能吧
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.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。
以上就是Java纯代码实现导出pdf的详细内容，更多关于Java导出pdf的资料请关注脚本之家其它相关文章！
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