java绑定pdf模板数据（Java之数据填充PDF模板）

场景：将PDF存在阿里的OSS中，程序获取OSS的PDF数据，然后进行填充，下载。

1、既然要填充PDF,必然需要制作PDF模板，可以使用Adobe Acrobat DC(如需破解版的，请下方留言)

2、开始制作模板

PDF模板

3、使用Adobe Acrobat DC打开保存的PDF文件，然后搜索 "准备表单" ,点击 ”准备表单“，然后出来表单域

寻找表单

字段修改

4、代码依赖

<dependency> <groupId>commons-io</groupId> <artifactId>commons-io</artifactId> <version>2.4</version> </dependency> <dependency> <groupId>commons-codec</groupId> <artifactId>commons-codec</artifactId> <version>1.10</version> </dependency> <!-- itextpdf 依赖包start --> <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> <!-- itextpdf 依赖包end --> <!--pdf 转图片 start --> <dependency> <groupId>org.apache.pdfbox</groupId> <artifactId>pdfbox</artifactId> <version>2.0.11</version> </dependency> <dependency> <groupId>net.coobird</groupId> <artifactId>thumbnailator</artifactId> <version>0.4.2</version> </dependency> <!--pdf 转图片 end -->

package com.yangwj.demo.controller; import com.itextpdf.text.Document; import com.itextpdf.text.pdf.*; import org.apache.commons.io.fileUtils; import org.apache.commons.io.IOUtils; import org.apache.pdfbox.pdmodel.PDDocument; import org.apache.pdfbox.rendering.PDFRenderer; import javax.imageio.ImageIO; import java.awt.*; import java.awt.image.BufferedImage; import java.io.*; import java.util.*; import java.util.List; public class PdfUtils { public static void main(String[] args) throws IOException { HashMap map = new HashMap<String, String>(); map.put("name","杨杰"); map.put("sex","男"); map.put("age","27"); map.put("phone","15521331"); map.put("email","812406fdf@qq.com"); map.put("idCard","4305223243434332"); map.put("hobby","跑步"); map.put("time","2019年5月22日"); // String path = PdfUtils.class.getResource("/template").getPath(); // System.out.println("path:" path); // String sourceFile = path File.separator "test.pdf"; String sourceFile = "C:\\Users\\yangwj\\Desktop\\test.pdf"; String targetFile = "C:\\Users\\yangwj\\Desktop\\test_fill.pdf"; genPdf(map,sourceFile,targetFile); // System.out.println("获取pdf表单中的fieldNames:" getTemplateFileFieldNames(sourceFile)); // System.out.println("读取文件数组:" fileBuff(sourceFile)); // System.out.println("pdf转图片:" pdf2Img(new File(targetFile),imageFilePath)); } private static void genPdf(HashMap map, String sourceFile, String targetFile) throws IOException { File templateFile = new File(sourceFile); fillParam(map, FileUtils.readFileTobyteArray(templateFile), targetFile); } public static void fillParam(Map<String, String> fieldValueMap, byte[] file, String contractFileName) { FileOutputStream fos = null; try { fos = new FileOutputStream(contractFileName); Pdfreader reader = null; PdfStamper stamper = null; BaseFont base = null; try { reader = new PdfReader(file); stamper = new PdfStamper(reader, fos); stamper.setFormFlattening(true); base = BaseFont.createFont("STSong-Light", "UniGB-UCS2-H", BaseFont.NOT_EMBEDDED); AcroFields acroFields = stamper.getAcroFields(); for (String key : acroFields.getFields().keySet()) { acroFields.setFieldProperty(key, "textfont", base, null); acroFields.setFieldProperty(key, "textsize", new Float(9), null); } if (fieldValueMap != null) { for (String fieldName : fieldValueMap.keySet()) { acroFields.setField(fieldName, fieldValueMap.get(fieldName)); } } } catch (Exception e) { e.printStackTrace(); } finally { if (stamper != null) { try { stamper.close(); } catch (Exception e) { e.printStackTrace(); } } if (reader != null) { reader.close(); } } } catch (Exception e) { System.out.println("填充参数异常"); e.printStackTrace(); } finally { IOUtils.closeQuietly(fos); } } public static Set<String> getTemplateFileFieldNames(String pdfFileName) { Set<String> fieldNames = new TreeSet<String>(); PdfReader reader = null; try { reader = new PdfReader(pdfFileName); Set<String> keys = reader.getAcroFields().getFields().keySet(); for (String key : keys) { int lastIndexOf = key.lastIndexOf("."); int lastIndexOf2 = key.lastIndexOf("["); fieldNames.add(key.substring(lastIndexOf != -1 ? lastIndexOf 1 : 0, lastIndexOf2 != -1 ? lastIndexOf2 : key.length())); } } catch (IOException e) { e.printStackTrace(); } finally { if (reader != null) { reader.close(); } } return fieldNames; } public static byte[] fileBuff(String filePath) throws IOException { File file = new File(filePath); long fileSize = file.length(); if (fileSize > Integer.MAX_VALUE) { //System.out.println("file too big..."); return null; } FileInputStream fi = new FileInputStream(file); byte[] file_buff = new byte[(int) fileSize]; int offset = 0; int numRead = 0; while (offset < file_buff.length && (numRead = fi.read(file_buff, offset, file_buff.length - offset)) >= 0) { offset = numRead; } // 确保所有数据均被读取 if (offset != file_buff.length) { throw new IOException("Could not completely read file " file.getName()); } fi.close(); return file_buff; } public static void mergePdfFiles(String[] files, String savepath) { Document document = null; try { document = new Document(); //默认A4大小 PdfCopy copy = new PdfCopy(document, new FileOutputStream(savepath)); document.open(); for (int i = 0; i < files.length; i ) { PdfReader reader = null; try { reader = new PdfReader(files[i]); int n = reader.getNumberOfPages(); for (int j = 1; j <= n; j ) { document.newPage(); PdfImportedPage page = copy.getImportedPage(reader, j); copy.addPage(page); } } finally { if (reader != null) { reader.close(); } } } } catch (Exception e) { e.printStackTrace(); } finally { //关闭PDF文档流，OutputStream文件输出流也将在PDF文档流关闭方法内部关闭 if (document != null) { document.close(); } } } /** * pdf转图片 * @param file pdf * @return */ public static boolean pdf2Img(File file,String imageFilePath) { try { //生成图片保存 byte[] data = pdfToPic(PDDocument.load(file)); File imageFile = new File(imageFilePath); ImageThumbUtils.thumbImage(data, 1, imageFilePath); //按比例压缩图片 System.out.println("pdf转图片文件地址:" imageFilePath); return true; } catch (Exception e) { System.out.println("pdf转图片异常："); e.printStackTrace(); } return false; } /** * pdf转图片 */ private static byte[] pdfToPic(PDDocument pdDocument) { ByteArrayOutputStream baos = new ByteArrayOutputStream(); List<BufferedImage> piclist = new ArrayList<BufferedImage>(); try { PDFRenderer renderer = new PDFRenderer(pdDocument); for (int i = 0; i < pdDocument.getNumberOfPages(); i ) {// // 0 表示第一页，300 表示转换 dpi，越大转换后越清晰，相对转换速度越慢 BufferedImage image = renderer.renderImageWithDPI(i, 108); piclist.add(image); } // 总高度 总宽度 临时的高度 , 或保存偏移高度 临时的高度，主要保存每个高度 int height = 0, width = 0, _height = 0, __height = 0, // 图片的数量 picNum = piclist.size(); // 保存每个文件的高度 int[] heightArray = new int[picNum]; // 保存图片流 BufferedImage buffer = null; // 保存所有的图片的RGB List<int[]> imgRGB = new ArrayList<int[]>(); // 保存一张图片中的RGB数据 int[] _imgRGB; for (int i = 0; i < picNum; i ) { buffer = piclist.get(i); heightArray[i] = _height = buffer.getHeight();// 图片高度 if (i == 0) { // 图片宽度 width = buffer.getWidth(); } // 获取总高度 height = _height; // 从图片中读取RGB _imgRGB = new int[width * _height]; _imgRGB = buffer.getRGB(0, 0, width, _height, _imgRGB, 0, width); imgRGB.add(_imgRGB); } // 设置偏移高度为0 _height = 0; // 生成新图片 BufferedImage imageResult = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB); int[] lineRGB = new int[8 * width]; int c = new Color(128, 128, 128).getRGB(); for (int i = 0; i < lineRGB.length; i ) { lineRGB[i] = c; } for (int i = 0; i < picNum; i ) { __height = heightArray[i]; // 计算偏移高度 if (i != 0) _height = __height; imageResult.setRGB(0, _height, width, __height, imgRGB.get(i), 0, width); // 写入流中 // 模拟页分隔 if (i > 0) { imageResult.setRGB(0, _height 2, width, 8, lineRGB, 0, width); } } // 写流 ImageIO.write(imageResult, "jpg", baos); } catch (Exception e) { System.out.println("pdf转图片异常："); e.printStackTrace(); } finally { IOUtils.closeQuietly(baos); try { pdDocument.close(); } catch (Exception ignore) { } } return baos.toByteArray(); } }

如有问题，欢迎私信，因为这个项目是有做过的，所以，你使用起来有问题，可以下方留言

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