详解Java生成PDF文档方法

// word对象
WordprocessingMLPackage wordMLPackage = WordprocessingMLPackage.createPackage();
// 文档主体
MainDocumentPart mainDocumentPart = wordMLPackage.getMainDocumentPart();
// 换行符
Br br = objectFactory.createBr();
// 段落
P p = objectFactory.createP();
// 段落设置
PPr ppr = objectFactory.createPPr();
// 文字位置
Jc jc = new Jc();
jc.setVal(je);
ppr.setJc(jc);
// 行设置
RPr rpr = objectFactory.createRPr();
// 字体设置
RFonts rFonts = objectFactory.createRFonts();
rFonts.setAscii("Times New Roman");
rFonts.setEastAsia("宋体");
rpr.setRFonts(rFonts);
// 行
R r = objectFactory.createR();
// 文本
Text text = objectFactory.createText();
text.setValue("这是一段普通文本");
r.setRPr(rpr);
r.getContent().add(br);
r.getContent().add(text);
p.getContent().add(r);
p.setPPr(ppr);
// 添加到正文中
mainDocumentPart.addObject(p);
// 导出
//..

String formTemplate = "/Users/xiaoming/Desktop/test_pdfbox.pdf";
// 定义文档对象
PDDocument document = new PDDocument();
// 定义一页，大小A4
PDPage page = new PDPage(PDRectangle.A4);
document.addPage(page);
// 获取字体
PDType0Font font = PDType0Font.load(document, new File("/Users/xiaoming/work/tmp/simsun.ttf"));
// 定义页面内容流
PDPageContentStream stream = new PDPageContentStream(document, page);
// 设置字体及文字大小
stream.setFont(font, 12);
// 设置画笔颜色
stream.setNonStrokingColor(Color.BLACK);
// 添加矩形
stream.addRect(29, 797, 100, 14);
// 填充矩形
stream.fill();
stream.setNonStrokingColor(Color.BLACK);
// 文本填充开始
stream.beginText();
// 设置行距
stream.setLeading(18f);
// 设置文字位置
stream.newLineAtOffset(30, 800);
// 填充文字
stream.showText("呵呵");
// 换行
stream.newLine();
stream.showText("哈哈");
stream.newLine();
stream.showText("嘻嘻");
// 文本填充结束
stream.endText();
// 关闭流
stream.close();
// 保存
document.save(formTemplate);
// 释放资源
document.close();

Map<String, Object> map = new HashMap<>();
map.put("name", "小明");
map.put("address", "北京市朝阳区");
map.put("email", "xiaoming@abc.com");
StringWriter stringWriter = new StringWriter();
BufferedWriter writer = new BufferedWriter(stringWriter);
template.process(map, writer);
String xmlStr = stringWriter.toString();

ByteArrayInputStream in = new ByteArrayInputStream(xmlStr.getBytes());
WordprocessingMLPackage wordMLPackage = WordprocessingMLPackage.load(in);

String outputfilepath = "/Users/xiaoming/简历.pdf";
FileOutputStream os = new FileOutputStream(new File(outputFilePath));
FOSettings foSettings = Docx4J.createFOSettings();
foSettings.setWmlPackage(wordMLPackage);
Docx4J.toFO(foSettings, os, Docx4J.FLAG_EXPORT_PREFER_XSL);
// Docx4J.toPDF(wordMLPackage, new FileOutputStream(new File(outputfilepath)));

WordprocessingMLPackage mlPackage = WordprocessingMLPackage.load(new File("abc.docx"));
Mapper fontMapper = new IdentityPlusMapper(); 
// fontMapper.put("华文行楷", PhysicalFonts.get("STXingkai")); 
mlPackage.setFontMapper(fontMapper); 
OutputStream os = new java.io.FileOutputStream("abc.pdf");  
FOSettings foSettings = Docx4J.createFOSettings(); 
foSettings.setWmlPackage(mlPackage); 
Docx4J.toFO(foSettings, os, Docx4J.FLAG_EXPORT_PREFER_XSL); 

String folderName = "/Users/xiaoming/pdfs";
String destPath = "/Users/xiaoming/all.pdf";
PDFMergerUtility mergePdf = new PDFMergerUtility();
String[] filesInFolder = getFiles(folderName);
Arrays.sort(filesInFolder, new Comparator<String>() {
   @Override
   public int compare(String o1, String o2) {
     return o1.compareTo(o2);
   }
});
for (int i = 0; i < filesInFolder.length; i++) {
   mergePdf.addSource(folderName + File.separator + filesInFolder[i]);
}
mergePdf.setDestinationFileName(destPath);
mergePdf.mergeDocuments(MemoryUsageSetting.setupMainMemoryOnly());