JavaWeb项目生成PDF文件添加水印图片并导出-白红宇

JavaWeb项目生成PDF文件添加水印图片并导出

阅读量：5328 次

发布时间：2019-06-14

本文共 19389 字，大约阅读时间需要 64 分钟。

一、前言

首先需要在Maven中添加相应的jar包依赖，若项目没用到Maven，也可自行下载相应所需的jar包（itextpdf.jar 与 itext-asian.jar），如下图所示。

Maven中添加依赖jar包如下所示：

1 
      2 
     
       3     
      
       com.itextpdf
       4     
      
       itextpdf
       5     
      
       5.3.2
       6 
      7 
     
       8     
      
       com.itextpdf
       9     
      
       itext-asian
      10     
      
       5.2.0
      11 
     12

二、正文

1、首先获取需要填写至PDF中的数据，如下述所示，realPath为添加图片的路径，test.pdf为未添加图片的PDF临时文件，在Tomcat服务器对应路径下，以及导出的PDF文件存至桌面：

1 //点击下载获取企业信息并存至Pdf 2 @RequestMapping(value="/downloadPdf.do") 3 @ResponseBody 4 public String downloadPdf(@RequestParam(value = "download_corp_id") String download_corp_id, HttpServletRequest request) throws Exception { 5     List
     
       corpIfs = searchCorpService.getCorpInfo(Integer.parseInt(download_corp_id)); 6     TCorp tCorp = new TCorp(); 7     for (TCorp corpInfo: corpIfs){ 8         tCorp.setId(corpInfo.getId()); 9         tCorp.setRegNo(corpInfo.getRegNo());10         tCorp.setCorpName(corpInfo.getCorpName());11         tCorp.setCorpAddr(corpInfo.getCorpAddr());12         tCorp.setBelongOrg(corpInfo.getBelongOrg());13         tCorp.setBelongDistOrg(corpInfo.getBelongDistOrg());14         tCorp.setBelongTrade(corpInfo.getBelongTrade());15         tCorp.setEconKind(corpInfo.getEconKind());16         tCorp.setAdmitMain(corpInfo.getAdmitMain());17         tCorp.setStartDate(corpInfo.getStartDate());18         tCorp.setCheckDate(corpInfo.getCheckDate());19         tCorp.setOperManIdentNo(corpInfo.getOperManIdentNo());20         tCorp.setOperManName(corpInfo.getOperManName());21         tCorp.setCorpStatus(corpInfo.getCorpStatus());22         tCorp.setRegCapi(corpInfo.getRegCapi());23         tCorp.setPaidCapi(corpInfo.getPaidCapi());24         tCorp.setFareTermStart(corpInfo.getFareTermStart());25         tCorp.setFareTermEnd(corpInfo.getFareTermEnd());26         tCorp.setFareScope(corpInfo.getFareScope());27         tCorp.setUniScid(corpInfo.getUniScid());28         tCorp.setCorpTel(corpInfo.getCorpTel());29         tCorp.setCorpWebUrl(corpInfo.getCorpWebUrl());30         tCorp.setCorpLogo(corpInfo.getCorpLogo());31         tCorp.setCorpEmail(corpInfo.getCorpEmail());32         tCorp.setPracPersonNum(corpInfo.getPracPersonNum());33         tCorp.setOrgInstCode(corpInfo.getOrgInstCode());34         tCorp.setTaxpayNum(corpInfo.getTaxpayNum());35         tCorp.setStaffSize(corpInfo.getStaffSize());36         tCorp.setEnglishName(corpInfo.getEnglishName());37         tCorp.setFormerName(corpInfo.getFormerName());38         tCorp.setCorpInfo(corpInfo.getCorpInfo());39         tCorp.setCreateDate(corpInfo.getCreateDate());40         tCorp.setCreateOrg(corpInfo.getCreateOrg());41     }42 43     String realPath = request.getSession().getServletContext().getRealPath("/") + "\\icon\\logo_64.png";44     PDFReport.settCorp(tCorp);45     new PDFReport("test.pdf").generatePDF();46     PDFUtil.addImage("test.pdf", "C:\\Users\\Administrator\\Desktop\\"+tCorp.getCorpName()+".pdf",realPath);47 48     return "提示：数据导出成功!";49 }

2、PDFReport类中申明一个文档类型建立Document对象，设置页面样式等：

1 package util;  2   3 import com.itextpdf.text.Document;  4 import com.itextpdf.text.PageSize;  5 import com.itextpdf.text.Rectangle;  6 import com.itextpdf.text.pdf.PdfPTable;  7 import com.itextpdf.text.pdf.PdfWriter;  8 import entity.TCorp;  9  10 import java.io.File; 11 import java.io.FileOutputStream; 12  13 public class PDFReport { 14     private static TCorp tCorp; 15  16     Document document = new Document();// 建立一个Document对象 17  18     public PDFReport(String out) { 19         try { 20             File file = new File(out); 21             file.createNewFile(); 22             Rectangle pageSize = new Rectangle(PageSize.A4); 23             document.setPageSize(pageSize); 24             PdfWriter writer = PdfWriter.getInstance(document, new FileOutputStream(file)); 25             PDFBuilder builder = new PDFBuilder(); 26             writer.setPageEvent(builder); 27             document.open(); 28             PdfPTable table = generatePDF(); 29             document.add(table); 30             document.close(); 31         } catch (Exception e) { 32             e.printStackTrace(); 33         } 34     } 35  36     public static void settCorp(TCorp tCorp) { 37         PDFReport.tCorp = tCorp; 38     } 39  40  41     public PdfPTable generatePDF() { 42         //设置单元格为5列 43         PdfPTable table = PDFUtil.createTable(5); 44  45         table.addCell(PDFUtil.createHeadCell("企业信息列表")); 46         table.addCell(PDFUtil.createTitleCell_1("企业名称")); 47         table.addCell(PDFUtil.createCell_1(tCorp.getCorpName())); 48         table.addCell(PDFUtil.createTitleCell_1("联系方式")); 49         table.addCell(PDFUtil.createCell_1(tCorp.getCorpTel())); 50         table.addCell(PDFUtil.createCell_2("Logo")); 51  52         table.addCell(PDFUtil.createTitleCell_1("企业邮箱")); 53         table.addCell(PDFUtil.createCell_1(tCorp.getCorpEmail())); 54         table.addCell(PDFUtil.createTitleCell_1("网址")); 55         table.addCell(PDFUtil.createCell_1(tCorp.getCorpWebUrl())); 56  57         table.addCell(PDFUtil.createTitleCell_1("企业地址")); 58         table.addCell(PDFUtil.createCell_1(tCorp.getCorpAddr())); 59         table.addCell(PDFUtil.createTitleCell_1("注册/实缴")); 60         table.addCell(PDFUtil.createCell_1(String.valueOf(tCorp.getRegCapi())+"万 / "+String.valueOf(tCorp.getPaidCapi())+"万")); 61  62         table.addCell(PDFUtil.createTitleCell_1("成立日期")); 63         table.addCell(PDFUtil.createCell_1(tCorp.getStartDate())); 64         table.addCell(PDFUtil.createTitleCell_1("统一社会信用代码")); 65         table.addCell(PDFUtil.createCell_3(tCorp.getUniScid())); 66  67         table.addCell(PDFUtil.createTitleCell_1("法定代表人")); 68         table.addCell(PDFUtil.createCell_1(tCorp.getOperManName())); 69         table.addCell(PDFUtil.createTitleCell_1("纳税人识别号")); 70         table.addCell(PDFUtil.createCell_3(tCorp.getTaxpayNum())); 71  72         table.addCell(PDFUtil.createTitleCell_1("注册号")); 73         table.addCell(PDFUtil.createCell_1(tCorp.getRegNo())); 74         table.addCell(PDFUtil.createTitleCell_1("组织机构代码")); 75         table.addCell(PDFUtil.createCell_3(tCorp.getOrgInstCode())); 76  77         table.addCell(PDFUtil.createTitleCell_1("公司类型")); 78         table.addCell(PDFUtil.createCell_1(tCorp.getEconKind())); 79         table.addCell(PDFUtil.createTitleCell_1("人员规模")); 80         table.addCell(PDFUtil.createCell_3(tCorp.getStaffSize())); 81  82         table.addCell(PDFUtil.createTitleCell_1("营业期限")); 83         table.addCell(PDFUtil.createCell_1(tCorp.getFareTermStart()+" 至 "+tCorp.getFareTermEnd())); 84         table.addCell(PDFUtil.createTitleCell_1("登记机关")); 85         table.addCell(PDFUtil.createCell_3(tCorp.getBelongOrg())); 86  87         table.addCell(PDFUtil.createTitleCell_1("核准日期")); 88         table.addCell(PDFUtil.createCell_1(tCorp.getCheckDate())); 89         table.addCell(PDFUtil.createTitleCell_1("所属行业")); 90         table.addCell(PDFUtil.createCell_3(tCorp.getBelongTrade())); 91  92         table.addCell(PDFUtil.createTitleCell_1("英文名称")); 93         table.addCell(PDFUtil.createCell_1(tCorp.getEnglishName())); 94         table.addCell(PDFUtil.createTitleCell_1("曾用名")); 95         table.addCell(PDFUtil.createCell_3(tCorp.getFormerName())); 96  97         table.addCell(PDFUtil.createTitleCell_2("经营范围")); 98         table.addCell(PDFUtil.createCell_4(tCorp.getFareScope())); 99 100         return table;101     }102 }

3、PDFUtil类中设置字体、表格样式、以及水印文字样式，setColspan函数为设置所跨列数，setRowspan函数为设置所跨行数：

1 package util;  2   3 import com.itextpdf.text.*;  4 import com.itextpdf.text.pdf.*;  5   6 import javax.imageio.ImageIO;  7 import java.io.BufferedOutputStream;  8 import java.io.File;  9 import java.io.FileOutputStream; 10  11 public class PDFUtil { 12     private static Font headfont ; // 设置字体大小 13     private static Font keyfont;   // 设置字体大小 14     private static Font textfont;  // 设置字体大小 15  16     static{ 17         BaseFont bfChinese; 18         try { 19             bfChinese = BaseFont.createFont("STSong-Light","UniGB-UCS2-H",BaseFont.NOT_EMBEDDED); 20             headfont = new Font(bfChinese, 24, Font.BOLD,BaseColor.BLACK);// 设置字体大小 21             keyfont = new Font(bfChinese, 12, Font.BOLD,BaseColor.BLACK);// 设置字体大小 22             textfont = new Font(bfChinese, 10, Font.NORMAL,BaseColor.BLACK);// 设置字体大小 23         } catch (Exception e) { 24             e.printStackTrace(); 25         } 26     } 27  28     //表格标题 29     public static PdfPCell createHeadCell(String value){ 30         PdfPCell cell = new PdfPCell(); 31         cell.setVerticalAlignment(15); 32         cell.setHorizontalAlignment(15); 33         cell.setColspan(5); 34         cell.setPhrase(new Phrase(value,headfont)); 35         cell.setHorizontalAlignment(Element.ALIGN_CENTER); //水平居中 36         cell.setPadding(10.0f); 37         cell.setBorder(0); 38         cell.setPaddingTop(5.0f); 39         cell.setPaddingBottom(18.0f); 40         return cell; 41     } 42  43     //表格表头样式1 44     public static  PdfPCell createTitleCell_1(String value){ 45         PdfPCell cell = new PdfPCell(); 46         cell.setVerticalAlignment(Element.ALIGN_MIDDLE); 47         cell.setHorizontalAlignment(Element.ALIGN_CENTER); 48         cell.setPhrase(new Phrase(value, keyfont)); 49         cell.setBackgroundColor(new BaseColor(29, 181, 238)); 50         cell.setColspan(1); 51         cell.setFixedHeight(35); 52         return cell; 53     } 54  55     //表格表头样式2 56     public static  PdfPCell createTitleCell_2(String value){ 57         PdfPCell cell = new PdfPCell(); 58         cell.setVerticalAlignment(Element.ALIGN_MIDDLE); 59         cell.setHorizontalAlignment(Element.ALIGN_CENTER); 60         cell.setPhrase(new Phrase(value, keyfont)); 61         cell.setBackgroundColor(new BaseColor(29, 181, 238)); 62         cell.setColspan(1); 63         cell.setRowspan(3); 64         cell.setFixedHeight(105); 65         return cell; 66     } 67  68     //表格内容样式1 69     public static PdfPCell createCell_1(String value){ 70         PdfPCell cell = new PdfPCell(); 71         cell.setVerticalAlignment(Element.ALIGN_MIDDLE); 72         cell.setHorizontalAlignment(Element.ALIGN_CENTER); 73         cell.setPhrase(new Phrase(value,textfont)); 74         cell.setBackgroundColor(new BaseColor(255, 255, 255)); 75         cell.setColspan(1); 76         cell.setFixedHeight(35); 77         return cell; 78     } 79  80     //表格内容样式2 81     public static PdfPCell createCell_2(String value){ 82         PdfPCell cell = new PdfPCell(); 83         cell.setVerticalAlignment(Element.ALIGN_MIDDLE); 84         cell.setHorizontalAlignment(Element.ALIGN_CENTER); 85         cell.setPhrase(new Phrase(value,textfont)); 86         cell.setBackgroundColor(new BaseColor(255, 255, 255)); 87         cell.setColspan(1); 88         cell.setRowspan(3); 89         cell.setFixedHeight(105); 90         return cell; 91     } 92  93     //表格内容样式3 94     public static PdfPCell createCell_3(String value){ 95         PdfPCell cell = new PdfPCell(); 96         cell.setVerticalAlignment(Element.ALIGN_MIDDLE); 97         cell.setHorizontalAlignment(Element.ALIGN_CENTER); 98         cell.setPhrase(new Phrase(value,textfont)); 99         cell.setBackgroundColor(new BaseColor(255, 255, 255));100         cell.setColspan(2);101         cell.setFixedHeight(35);102         return cell;103     }104 105     //表格内容样式4106     public static PdfPCell createCell_4(String value){107         PdfPCell cell = new PdfPCell();108         cell.setVerticalAlignment(Element.ALIGN_MIDDLE);109         cell.setHorizontalAlignment(Element.ALIGN_CENTER);110         cell.setPhrase(new Phrase(value,textfont));111         cell.setBackgroundColor(new BaseColor(255, 255, 255));112         cell.setColspan(4);113         cell.setRowspan(3);114         cell.setFixedHeight(105);115         return cell;116     }117 118     //生成表格119     public static PdfPTable createTable(int colNumber){120         int widths[] = { 35,40,35,35,30 };121         PdfPTable baseTable  = new PdfPTable(colNumber);122         baseTable.setWidthPercentage(100);123         baseTable.setSpacingBefore(10);124         try {125             baseTable.setWidths(widths);126         } catch (DocumentException e) {127             e.printStackTrace();128         }129         return baseTable;130     }131 132 133     public static  void addImage(String input,String output,String realPath) throws Exception{134         BufferedOutputStream out = new BufferedOutputStream(135                 new FileOutputStream(new File(output)));136         PdfReader reader = new PdfReader(input);137         PdfStamper stamper = new PdfStamper(reader, out);138         addWatermark(stamper,"测试添加水印文字");139         int total = reader.getNumberOfPages();140         try {141             Image image = Image.getInstance(realPath);142             image.setAbsolutePosition(350, 200);143             image.scaleToFit(160, 70);144             PdfContentByte content= stamper.getOverContent(total);// 在内容上方加水印145             content.addImage(image);146         }catch (Exception e){147             e.printStackTrace();148         }149 150         stamper.close();151         reader.close();152     }153 154     public static void addWatermark(PdfStamper pdfStamper, String waterMarkName) throws Exception {155         PdfContentByte content;156         BaseFont base = BaseFont.createFont("STSong-Light", "UniGB-UCS2-H",157                 BaseFont.NOT_EMBEDDED);158         Rectangle pageRect;159         PdfGState gs = new PdfGState();160         try {161             if (base == null || pdfStamper == null) {162                 return;163             }164             // 设置透明度为0.4165             gs.setFillOpacity(0.3f);166             gs.setStrokeOpacity(0.3f);167             int toPage = pdfStamper.getReader().getNumberOfPages();168             for (int i = 1; i <= toPage; i++) {169                 pageRect = pdfStamper.getReader().getPageSizeWithRotation(i);170                 // 计算水印X,Y坐标171                 float x = pageRect.getWidth() / 2;172                 float y = pageRect.getHeight() / 2;173                 // 获得PDF最顶层174                 content = pdfStamper.getOverContent(i);175                 content.saveState();176                 // set Transparency177                 content.setGState(gs);178                 content.beginText();179                 content.setColorFill(BaseColor.GRAY);180                 content.setFontAndSize(base, 30);181                 // 水印文字成45度角倾斜182                 content.showTextAligned(Element.ALIGN_CENTER, waterMarkName, x,183                         y, 45);184                 content.endText();185             }186         } catch (Exception ex) {187             ex.printStackTrace();188         }189     }190 }

4、PDFBuilder类中为设置页面附加属性：

1 package util;  2   3 import com.itextpdf.text.*;  4 import com.itextpdf.text.pdf.*;  5   6 import java.io.IOException;  7   8 public class PDFBuilder extends PdfPageEventHelper {  9     /** 10      * 页眉 11      */ 12     public String header = ""; 13  14     /** 15      * 文档字体大小，页脚页眉最好和文本大小一致 16      */ 17     public int presentFontSize = 12; 18  19  20     // 模板 21     public PdfTemplate total; 22  23     // 基础字体对象 24     public BaseFont bf = null; 25  26     // 利用基础字体生成的字体对象，一般用于生成中文文字 27     public Font fontDetail = null; 28  29     /** 30      * 31      * Creates a new instance of PdfReportM1HeaderFooter 无参构造方法. 32      * 33      */ 34     public PDFBuilder() { 35  36     } 37  38     public void setHeader(String header) { 39         this.header = header; 40     } 41  42     /** 43      * 44      * TODO 文档打开时创建模板 45      * 46      * @see com.itextpdf.text.pdf.PdfPageEventHelper#onOpenDocument(com.itextpdf.text.pdf.PdfWriter, 47      *      com.itextpdf.text.Document) 48      */ 49     public void onOpenDocument(PdfWriter writer, Document document) { 50         total = writer.getDirectContent().createTemplate(50, 50);// 共 页 的矩形的长宽高 51     } 52  53     /** 54      * 55      * TODO 关闭每页的时候，写入页眉，写入'第几页共'这几个字。 56      * 57      * @see com.itextpdf.text.pdf.PdfPageEventHelper#onEndPage(com.itextpdf.text.pdf.PdfWriter, 58      *      com.itextpdf.text.Document) 59      */ 60     public void onEndPage(PdfWriter writer, Document document) { 61         this.addPage(writer, document); 62     } 63  64     //加分页 65     public void addPage(PdfWriter writer, Document document){ 66         try { 67             if (bf == null) { 68                 bf = BaseFont.createFont("STSong-Light", "UniGB-UCS2-H", false); 69             } 70             if (fontDetail == null) { 71                 fontDetail = new Font(bf, presentFontSize, Font.NORMAL);// 数据体字体 72             } 73         } catch (DocumentException e) { 74             e.printStackTrace(); 75         } catch (IOException e) { 76             e.printStackTrace(); 77         } 78  79         // 1.写入页眉 80         ColumnText.showTextAligned(writer.getDirectContent(), 81                 Element.ALIGN_LEFT, new Phrase(header, fontDetail), 82                 document.left(), document.top() + 20, 0); 83         // 2.写入前半部分的 第 X页/共 84         int pageS = writer.getPageNumber(); 85         String foot1 = "第 " + pageS + " 页 / 共"; 86         Phrase footer = new Phrase(foot1, fontDetail); 87  88         // 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 89         float len = bf.getWidthPoint(foot1, presentFontSize); 90  91         // 4.拿到当前的PdfContentByte 92         PdfContentByte cb = writer.getDirectContent(); 93  94         // 5.写入页脚1，x轴就是(右margin+左margin + right() -left()- len)/2.0F 95         // 再给偏移20F适合人类视觉感受，否则肉眼看上去就太偏左了 96         // ,y轴就是底边界-20,否则就贴边重叠到数据体里了就不是页脚了；注意Y轴是从下往上累加的，最上方的Top值是大于Bottom好几百开外的。 97         ColumnText 98                 .showTextAligned( 99                         cb,100                         Element.ALIGN_CENTER,101                         footer,102                         (document.rightMargin() + document.right()103                                 + document.leftMargin() - document.left() - len) / 2.0F + 20F,104                         document.bottom() - 20, 0);105 106         // 6.写入页脚2的模板（就是页脚的Y页这俩字）添加到文档中，计算模板的和Y轴,X=(右边界-左边界 - 前半部分的len值)/2.0F +107         // len ， y 轴和之前的保持一致，底边界-20108         cb.addTemplate(total, (document.rightMargin() + document.right()109                         + document.leftMargin() - document.left()) / 2.0F + 20F,110                 document.bottom() - 20); // 调节模版显示的位置111 112     }113 114 115     /**116      *117      * TODO 关闭文档时，替换模板，完成整个页眉页脚组件118      *119      * @see com.itextpdf.text.pdf.PdfPageEventHelper#onCloseDocument(com.itextpdf.text.pdf.PdfWriter,120      *      com.itextpdf.text.Document)121      */122     public void onCloseDocument(PdfWriter writer, Document document) {123         // 7.最后一步，是关闭文档的时候，将模板替换成实际的 Y 值,至此，page x of y 制作完毕，完美兼容各种文档size。124         total.beginText();125         total.setFontAndSize(bf, presentFontSize);// 生成的模版的字体、颜色126         String foot2 = " " + (writer.getPageNumber()-1) + " 页";127         total.showText(foot2);// 模版显示的内容128         total.endText();129         total.closePath();130     }131 }

最后附上生成的PDF效果图：

本文学习参考了：https://blog.csdn.net/qq_30490591/article/details/53434777

至此是关于JavaWeb项目生成PDF文件添加水印图片并导出，仅供参考。

如有疏漏错误之处，还请不吝赐教！

转载于:https://www.cnblogs.com/yijialong/p/9765282.html

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