Java 使用iText7生成带页码的PDF文件（同时生成目录，但是不会合并两个PDF）

package test.hui; import java.io.IOException; import java.util.HashMap; import java.util.LinkedHashMap; import java.util.Map; import com.itextpdf.io.font.PdfEncodings; import com.itextpdf.io.image.ImageData; import com.itextpdf.io.image.ImageDataFactory; import com.itextpdf.kernel.events.IEventHandler; import com.itextpdf.kernel.events.PdfDocumentEvent; import com.itextpdf.kernel.font.PdfFont; import com.itextpdf.kernel.font.PdfFontFactory; import com.itextpdf.kernel.pdf.PdfDocument; import com.itextpdf.kernel.pdf.PdfWriter; import com.itextpdf.kernel.pdf.xobject.PdfImageXObject; import com.itextpdf.layout.Document; import com.itextpdf.layout.element.AreaBreak; import com.itextpdf.layout.element.Image; import com.itextpdf.layout.element.Paragraph; import com.itextpdf.layout.property.TextAlignment; /** * * * * * @author Hui * */ public class PDFUtil { public static String DEST2 = "";//文件路径 public static PdfFont sysFont =null; private Map<String, Integer> catalogMap = new LinkedHashMap<String, Integer>();//<标题，页数> public PDFUtil(String url){ try { //sysFont = PdfFontFactory.createFont("STSongStd-Light", "UniGB-UCS2-H", false);//中文设置 sysFont = PdfFontFactory.createFont("c://windows//fonts//simsun.ttc,1",PdfEncodings.IDENTITY_H, false);//中文设置,解决特殊字符错误 DEST2=url; } catch (IOException e) { e.printStackTrace(); } } /** * 创建pdf doc * @return doc * */ public Document createPdfDoc() throws Exception{ PdfDocument pdfDoc = new PdfDocument(new PdfWriter(DEST2)); Document doc = new Document(pdfDoc);//构建文档对象 //设置页码 TextFooterEventHandler eh= new TextFooterEventHandler(doc); pdfDoc.addEventHandler(PdfDocumentEvent.END_PAGE,eh); return doc; } /** * 添加大标题 * @param * * */ public void addTitle(Document doc,String title) throws Exception{ Paragraph paragraph = new Paragraph(); paragraph.add(title).setFont(sysFont).setBold().setFontSize(20).setTextAlignment(TextAlignment.CENTER); doc.add(paragraph); } /** * 添加一级标题 * @param * * */ public void addHeading1(Document doc,String pg) throws Exception{ Paragraph paragraph = new Paragraph(); paragraph.add(pg).setFont(sysFont).setBold().setFontSize(16); doc.add(paragraph); catalogMap.put(pg, doc.getPdfDocument().getNumberOfPages()); } /** * 添加二级标题 * @param * * */ public void addHeading2(Document doc,String pg) throws Exception{ Paragraph paragraph = new Paragraph(); paragraph.add(pg).setFont(sysFont).setBold().setFontSize(14).setFirstLineIndent(14); doc.add(paragraph); catalogMap.put(pg, doc.getPdfDocument().getNumberOfPages()); } /** * 添加三级标题 * @param * * */ public void addHeading3(Document doc,String pg) throws Exception{ Paragraph paragraph = new Paragraph(); paragraph.add(pg).setFont(sysFont).setBold().setFontSize(12); doc.add(paragraph); catalogMap.put(pg, doc.getPdfDocument().getNumberOfPages()); } /** * 添加段落 * @param * */ public void addParagraph(Document doc,String pg) throws Exception{ Paragraph paragraph = new Paragraph(); paragraph.add(pg).setFont(sysFont).setFirstLineIndent(20);//中文字体，首行缩进 doc.add(paragraph); } /** * 添加图片 * @param * */ public void addImg(Document doc,String url) throws Exception{ ImageData imgData=ImageDataFactory.create(url); Image pic=new Image(imgData); doc.add(pic); } public Map<String, Integer> getCatalogMap() { return catalogMap; } public void setCatalogMap(Map<String, Integer> catalogMap) { this.catalogMap = catalogMap; } }