这篇“Java操作pdf的工具类itext怎么处理”文章的知识点大部分人都不太理解，所以小编给大家总结了以下内容，内容详细，步骤清晰，具有一定的借鉴价值，希望大家阅读完这篇文章能有所收获，下面我们一起来看看这篇“Java操作pdf的工具类itext怎么处理”文章吧。
在企业的信息系统中，报表处理一直占比较重要的作用，iText是一种生成PDF报表的Java组件。通过在服务器端使用Jsp或JavaBean生成PDF报表，客户端采用超链接显示或下载得到生成的报表，这样就很好的解决了B/S系统的报表处理问题。
1、项目要使用iText，必须引入jar包
<dependency> <groupId>com.itextpdf</groupId> <artifactId>itextpdf</artifactId> <version>5.5.6</version> </dependency>
2、输出中文，还要引入下面itext-asian.jar包
<dependency> <groupId>com.itextpdf</groupId> <artifactId>itext-asian</artifactId> <version>5.2.0</version> </dependency>
3、设置pdf文件密码，还要引入下面bcprov-jdk15on.jar包
<dependency> <groupId>org.bouncycastle</groupId> <artifactId>bcprov-jdk15on</artifactId> <version>1.47</version> </dependency>
com.itextpdf.text.Document：这是iText库中最常用的类，它代表了一个 pdf 实例。如果你需要从零开始生成一个pdf文件，你需要使用这个Document类。首先创建该实例，然后打开它，并添加内容，最后关闭该实例，即可生成一个pdf文件。
com.itextpdf.text.Paragraph：表示一个缩进的文本段落，在段落中，你可以设置对齐方式，缩进，段落前后间隔等
com.itextpdf.text.Chapter：表示 pdf 的一个章节，他通过一个Paragraph类型的标题和整形章数创建
com.itextpdf.text.Font：这个类包含了所有规范好的字体，包括family of font，大小，样式和颜色，所有这些字体都被声明为静态常量
com.itextpdf.text.List：表示一个列表；com.itextpdf.text.Anchor：表示一个锚，类似于HTML页面的链接。
com.itextpdf.text.pdf.PdfWriter：当这个PdfWriter被添加到PdfDocument后，所有添加到Document的内容将会写入到与文件或网络关联的输出流中。
com.itextpdf.text.pdf.PdfReader：用于读取 pdf 文件；
1、创建文档
Document document = new Document();
2、通过书写器将文档写入磁盘
PdfWriter writer = PdfWriter.getInstance(document, new FileOutputStream(FILE_DIR + "createPDFWithColor.pdf"));
3、打开文档
document.open();
4、向文档中添加内容
document.add(new Paragraph("i love CSDN"));5、关闭文档
document.close();
package com.neusoft.guor.itext; import java.io.File; import java.io.FileNotFoundException; import java.io.FileOutputStream; import java.io.IOException; import java.net.MalformedURLException; import java.util.ArrayList; import java.util.Iterator; import java.util.zip.ZipEntry; import java.util.zip.ZipOutputStream; import com.itextpdf.text.*; import com.itextpdf.text.pdf.BaseFont; import com.itextpdf.text.pdf.ColumnText; import com.itextpdf.text.pdf.PdfAction; import com.itextpdf.text.pdf.PdfAnnotation; import com.itextpdf.text.pdf.PdfContentByte; import com.itextpdf.text.pdf.PdfImportedPage; import com.itextpdf.text.pdf.PdfName; import com.itextpdf.text.pdf.PdfOutline; import com.itextpdf.text.pdf.PdfPageEventHelper; import com.itextpdf.text.pdf.PdfReader; import com.itextpdf.text.pdf.PdfStamper; import com.itextpdf.text.pdf.PdfString; import com.itextpdf.text.pdf.PdfTransition; import com.itextpdf.text.pdf.PdfWriter; import com.itextpdf.text.pdf.draw.DottedLineSeparator; import com.itextpdf.text.pdf.draw.LineSeparator; import com.itextpdf.text.pdf.draw.VerticalPositionMark; /** * itext PDF操作 */ public class PDFInit { public static final String FILE_DIR = "E:\\guor\\itext\\"; public static final String const_JPG_JAVA = FILE_DIR + "java.jpg"; public static final String const_JPG_NGINX = FILE_DIR + "nginx.jpg"; private static final String const_NEZHA = "哪吒编程"; private static final String const_NEZHA_PROGRAM = "获取Java学习资料请关注公众号：哪吒编程"; private static final String const_BIBIDONG = "比比东"; private static final String const_YUNYUN = "云韵"; private static final String const_BAIDU = "百度一下 你就知道"; private static final String const_BAIDU_URL = "https://www.baidu.com"; private static final String const_PAGE_FIRST = "第一页"; private static final String const_PAGE_SECOND = "第二页"; private static final String const_PAGE_THIRD = "第三页"; private static final String const_PAGE_FOUR = "第四页"; private static final String const_PAGE_FIVE = "第五页"; private static final String const_TITLE_FIRST = "一级标题"; private static final String const_TITLE_SECOND = "二级标题"; private static final String const_CONTENT = "内容"; // 普通中文字体 public static Font static_FONT_CHINESE = null; // 超链字体 public static Font static_FONT_LINK = null; private static void pdfFontInit() throws IOException, DocumentException { // 微软雅黑 BaseFont chinese = BaseFont.createFont("STSong-Light", "UniGB-UCS2-H", BaseFont.NOT_EMBEDDED); // 普通中文字体 static_FONT_CHINESE = new Font(chinese, 12, Font.NORMAL);// Font.BOLD为加粗 // 超链字体 static_FONT_LINK = new Font(chinese, 12, Font.NORMAL, BaseColor.BLUE); } public static Document document; public static void main(String[] args) throws Exception { pdfFontInit(); //createPDF();// 生成一个 PDF 文件 //createPDFWithColor();// 设置PDF的页面大小和背景颜色 //createPDFWithPassWord();// 创建带密码的PDF //createPDFWithNewPages();// 为PDF添加页 //createPDFWithWaterMark();// 为PDF文件添加水印，背景图 //createPDFWithContent();//插入块Chunk, 内容Phrase, 段落Paragraph, List //createPDFWithExtraContent();//插入Anchor, Image, Chapter, Section //draw();//画图 //createPDFWithAlignment();//设置段落 //createPDFToDeletePage();//删除 page //insertPage();// 插入 page //splitPDF();//分割 page //mergePDF();// 合并 PDF 文件 //sortpage();// 排序page //setHeaderFooter();// 页眉，页脚 //addColumnText();// 左右文字 //setView();// 文档视图 //pdfToZip();// 压缩PDF到Zip addAnnotation();// 注释 /** * 创建一个 PDF 文件，并添加文本 */ public static void createPDF() throws IOException, DocumentException { // 实例化 document document = new Document(); // 生成文件 String path = FILE_DIR + "createPDF.pdf"; File file = new File(path); if(!file.exists()){ file.createNewFile(); } PdfWriter.getInstance(document, new FileOutputStream(FILE_DIR + "createPDF.pdf")); // 打开 document document.open(); // 添加文本 此处无法写入中文 TODO document.add(new Paragraph(const_NEZHA)); document.add(new Paragraph(const_NEZHA, static_FONT_CHINESE)); // 关闭 document document.close(); * 创建PDF文件，修改文件的属性 public static void createPDFWithColor() throws FileNotFoundException, DocumentException { // 页面大小 Rectangle rect = new Rectangle(PageSize.A5.rotate()); // 页面背景色 rect.setBackgroundColor(BaseColor.YELLOW); document = new Document(rect); PdfWriter writer = PdfWriter.getInstance(document, new FileOutputStream(FILE_DIR + "createPDFWithColor.pdf")); // PDF版本(默认1.4) writer.setPdfVersion(PdfWriter.VERSION_1_6); // 文档属性 document.addAuthor(const_NEZHA); document.addTitle("我的第一个pdf"); // 页边空白 document.setMargins(10, 10, 10, 10); // 打开 // 关闭 * 创建带密码的PDF public static void createPDFWithPassWord() throws FileNotFoundException, DocumentException { PdfWriter writer = PdfWriter.getInstance(document, new FileOutputStream(FILE_DIR + "createPDFWithPassWord.pdf")); // userPassword打开密码："123" // ownerPassword编辑密码: "123456" writer.setEncryption("123".getBytes(), "123456".getBytes(), PdfWriter.ALLOW_SCREENREADERS, PdfWriter.STANDARD_ENCRYPTION_128); * 为PDF添加页 public static void createPDFWithNewPages() throws FileNotFoundException, DocumentException { PdfWriter writer = PdfWriter.getInstance(document, new FileOutputStream(FILE_DIR + "createPDFAddNewPages.pdf")); document.add(new Paragraph(const_PAGE_FIRST, static_FONT_CHINESE)); document.newPage(); document.add(new Paragraph(const_PAGE_SECOND, static_FONT_CHINESE)); writer.setPageEmpty(true); document.add(new Paragraph(const_PAGE_THIRD, static_FONT_CHINESE)); * 为PDF文件添加水印，背景图 public static void createPDFWithWaterMark() throws IOException, DocumentException { FileOutputStream out = new FileOutputStream(FILE_DIR + "createPDFWithWaterMark.pdf"); PdfWriter.getInstance(document, out); // 图片水印 PdfReader reader = new PdfReader(FILE_DIR + "createPDFWithWaterMark.pdf"); PdfStamper stamp = new PdfStamper(reader, new FileOutputStream(FILE_DIR + "createPDFWithWaterMark2.pdf")); Image img = Image.getInstance(const_JPG_JAVA); img.setAbsolutePosition(200, 200); PdfContentByte under = stamp.getUnderContent(1); under.addImage(img); // 文字水印 PdfContentByte over = stamp.getOverContent(2); // 加载字库来完成对字体的创建 BaseFont bf = BaseFont.createFont(BaseFont.HELVETICA, BaseFont.WINANSI, BaseFont.EMBEDDED); over.beginText(); // 设置颜色 默认为蓝色 over.setColorFill(BaseColor.RED); // 设置字体字号 over.setFontAndSize(bf, 50); // 设置起始位置 over.setTextMatrix(30, 30); // 开始写入水印 左-下-倾斜度 over.showTextAligned(Element.ALIGN_LEFT, "nezha", 245, 400, 30); over.endText(); // 背景图 Image img2 = Image.getInstance(const_JPG_NGINX); img2.setAbsolutePosition(0, 0); PdfContentByte under2 = stamp.getUnderContent(3); under2.addImage(img2); stamp.close(); reader.close(); * 插入Chunk, Phrase, Paragraph, List * Chunk : 块，PDF文档中描述的最小原子元素 * Phrase : 短语，Chunk的集合 * Paragraph : 段落，一个有序的Phrase集合 public static void createPDFWithContent() throws DocumentException, FileNotFoundException { FileOutputStream out = new FileOutputStream(FILE_DIR + "createPDFWithContent.pdf"); // 添加块 document.add(new Chunk(const_NEZHA, static_FONT_CHINESE)); Font font = new Font(Font.FontFamily.HELVETICA, 8, Font.BOLD, BaseColor.WHITE); Chunk id = new Chunk("springboot", font); id.setBackground(BaseColor.BLACK, 1f, 0.5f, 1f, 1.5f); id.setTextRise(7); document.add(id); Font font2 = new Font(Font.FontFamily.HELVETICA, 6, Font.BOLD, BaseColor.WHITE); Chunk id2 = new Chunk("springcloud", font2); id2.setBackground(BaseColor.BLACK, 1f, 0.5f, 1f, 1.5f); id2.setTextRise(3); id2.setUnderline(0.2f, -2f); document.add(id2); document.add(Chunk.NEWLINE); // 添加一页，添加短语 document.add(new Phrase("Phrase page")); // 添加短语 Phrase director = new Phrase(); Chunk name = new Chunk(const_BIBIDONG, static_FONT_CHINESE); // 添加下划线（thickness:下划线的粗细，yPosition:下划线离字的距离） name.setUnderline(0.5f, -1f); director.add(name); director.add(new Chunk(",")); director.add(new Chunk(" ")); director.add(new Chunk(const_YUNYUN, static_FONT_CHINESE)); director.setLeading(24); document.add(director); // 添加一页 Phrase director2 = new Phrase(); Chunk name2 = new Chunk(const_BIBIDONG, static_FONT_CHINESE); name2.setUnderline(0.2f, -2f); director2.add(name2); director2.add(new Chunk(",")); director2.add(new Chunk(" ")); director2.add(new Chunk(const_YUNYUN, static_FONT_CHINESE)); director2.setLeading(24); document.add(director2); // 添加段落 document.add(new Paragraph("Paragraph page")); Paragraph info = new Paragraph(); info.add(new Chunk(const_NEZHA)); info.add(new Chunk(const_BIBIDONG)); info.add(Chunk.NEWLINE); info.add(new Phrase(const_NEZHA)); document.add(info); // 通过循环添加段落信息 List list = new List(List.ORDERED); for (int i = 0; i < 5; i++) { ListItem item = new ListItem(String.format("%s: %d "+const_NEZHA, const_YUNYUN + (i + 1), (i + 1) * 100), new Font(Font.FontFamily.HELVETICA, 6, Font.BOLD, BaseColor.WHITE)); List girllist = new List(List.ORDERED, List.ALPHABETICAL); girllist.setLowercase(List.LOWERCASE); for (int j = 0; j < 3; j++) { ListItem girlitem = new ListItem("girls" + (j + 1)); List rolelist = new List(List.UNORDERED); for (int k = 0; k < 2; k++) { rolelist.add(String.format("%s, %s", const_NEZHA + (k + 1), const_BIBIDONG + (k + 1))); } girlitem.add(rolelist); girllist.add(girlitem); } item.add(girllist); list.add(item); document.add(list); * 插入锚Anchor, Image, 章节Chapter, 子列表Section public static void createPDFWithExtraContent() throws DocumentException, MalformedURLException, IOException { FileOutputStream out = new FileOutputStream(FILE_DIR + "createPDFWithExtraContent.pdf"); String content = "you can get anything from : "; Paragraph paragraph = new Paragraph(content); // 创建一个链接到外部网站的新锚点 // 并将此锚点添加到段落中。 Anchor anchor = new Anchor(const_BAIDU, static_FONT_LINK); anchor.setReference(const_BAIDU_URL); paragraph.add(anchor); document.add(paragraph); // Image对象 Image img = Image.getInstance(const_JPG_NGINX); img.setAlignment(Image.LEFT | Image.TEXTWRAP); img.setBorder(Image.BOX); img.setBorderWidth(10); img.setBorderColor(BaseColor.WHITE); img.scaleToFit(800, 50);// 大小 img.setRotationDegrees(-50);// 旋转 document.add(img); // 章节Chapter -- 目录 Paragraph title = new Paragraph(const_TITLE_FIRST,static_FONT_CHINESE); // 标题和序号 Chapter chapter = new Chapter(title, 1); // 子列表Section title = new Paragraph(const_TITLE_SECOND,static_FONT_CHINESE); Section section = chapter.addSection(title); section.setBookmarkTitle(const_NEZHA); section.setIndentation(10); section.setBookmarkOpen(false); section.setNumberStyle(Section.NUMBERSTYLE_DOTTED_WITHOUT_FINAL_DOT); Section subsection1 = section.addSection(new Paragraph(const_CONTENT,static_FONT_CHINESE)); subsection1.setIndentationLeft(10); subsection1.setNumberDepth(1); document.add(chapter); * 画图 public static void draw() throws Exception { FileOutputStream out = new FileOutputStream(FILE_DIR + "draw.pdf"); // 左右箭头 document.add(new VerticalPositionMark() { public void draw(PdfContentByte canvas, float llx, float lly, float urx, float ury, float y) { canvas.beginText(); BaseFont bf = null; try { bf = BaseFont.createFont(BaseFont.ZAPFDINGBATS, "", BaseFont.EMBEDDED); } catch (Exception e) { e.printStackTrace(); canvas.setFontAndSize(bf, 12); // LEFT canvas.showTextAligned(Element.ALIGN_CENTER, String.valueOf((char) 220), llx - 10, y, 0); // RIGHT canvas.showTextAligned(Element.ALIGN_CENTER, String.valueOf((char) 220), urx + 10, y + 8, 180); canvas.endText(); }); // 直线 Paragraph p1 = new Paragraph(const_NEZHA ,static_FONT_CHINESE); p1.add(new Chunk(new LineSeparator())); p1.add(const_BIBIDONG); document.add(p1); // 点线 Paragraph p2 = new Paragraph(const_NEZHA ,static_FONT_CHINESE); p2.add(new Chunk(new DottedLineSeparator())); p2.add(const_BIBIDONG); document.add(p2); // 下滑线 LineSeparator UNDERLINE = new LineSeparator(1, 100, null, Element.ALIGN_CENTER, -2); Paragraph p3 = new Paragraph(const_NEZHA_PROGRAM ,static_FONT_CHINESE); p3.add(UNDERLINE); document.add(p3); * 设置段落 public static void createPDFWithAlignment() throws Exception { FileOutputStream out = new FileOutputStream(FILE_DIR + "createPDFWithAlignment.pdf"); Paragraph p = new Paragraph("Never frown, even when you are sad, because you never know who is falling in love with your smile;" + "You will see exactly what life is worth, when all the rest has gone;" + "It is very simple to be happy, but it is very difficult to be simple."); // 默认 p.setAlignment(Element.ALIGN_JUSTIFIED); document.add(p); // 慢慢的向右移动 p.setIndentationLeft(1 * 15f); p.setIndentationRight((5 - 1) * 15f); // 居右 p.setAlignment(Element.ALIGN_RIGHT); p.setSpacingAfter(15f); // 居左 p.setAlignment(Element.ALIGN_LEFT); p.setSpacingBefore(15f); // 居中 p.setAlignment(Element.ALIGN_CENTER); * 删除页 public static void createPDFToDeletePage() throws Exception { FileOutputStream out = new FileOutputStream(FILE_DIR + "createPDFToDeletePage.pdf"); PdfWriter writer = PdfWriter.getInstance(document, out); PdfReader reader = new PdfReader(FILE_DIR + "createPDFToDeletePage.pdf"); reader.selectPages("1,3"); PdfStamper stamp = new PdfStamper(reader, new FileOutputStream(FILE_DIR + "createPDFToDeletePage2.pdf")); * 插入 page public static void insertPage() throws Exception { FileOutputStream out = new FileOutputStream(FILE_DIR + "insertPage.pdf"); PdfReader reader = new PdfReader(FILE_DIR + "insertPage.pdf"); PdfStamper stamp = new PdfStamper(reader, new FileOutputStream(FILE_DIR + "insertPage2.pdf")); stamp.insertPage(2, reader.getPageSize(1)); ColumnText ct = new ColumnText(null); ct.addElement(new Paragraph(24, new Chunk("INSERT PAGE"))); ct.setCanvas(stamp.getOverContent(2)); ct.setSimpleColumn(36, 36, 559, 770); * 分割 page public static void splitPDF() throws Exception { FileOutputStream out = new FileOutputStream(FILE_DIR + "splitPDF.pdf"); document.add(new Paragraph(const_PAGE_FOUR, static_FONT_CHINESE)); PdfReader reader = new PdfReader(FILE_DIR + "splitPDF.pdf"); Document dd = new Document(); PdfWriter writer = PdfWriter.getInstance(dd, new FileOutputStream(FILE_DIR + "splitPDF1.pdf")); dd.open(); PdfContentByte cb = writer.getDirectContent(); dd.newPage(); cb.addTemplate(writer.getImportedPage(reader, 1), 0, 0); cb.addTemplate(writer.getImportedPage(reader, 2), 0, 0); dd.close(); writer.close(); Document dd2 = new Document(); PdfWriter writer2 = PdfWriter.getInstance(dd2, new FileOutputStream(FILE_DIR + "splitPDF2.pdf")); dd2.open(); PdfContentByte cb2 = writer2.getDirectContent(); dd2.newPage(); cb2.addTemplate(writer2.getImportedPage(reader, 3), 0, 0); cb2.addTemplate(writer2.getImportedPage(reader, 4), 0, 0); dd2.close(); writer2.close(); * 合并 PDF 文件 public static void mergePDF() throws Exception { PdfReader reader1 = new PdfReader(FILE_DIR + "splitPDF1.pdf"); PdfReader reader2 = new PdfReader(FILE_DIR + "splitPDF2.pdf"); FileOutputStream out = new FileOutputStream(FILE_DIR + "mergePDF.pdf"); Document document = new Document(); java.util.List<PdfReader> readers = new ArrayList<PdfReader>(); readers.add(reader1); readers.add(reader2); int pageOfCurrentReaderPDF = 0; Iterator<PdfReader> iteratorPDFReader = readers.iterator(); while (iteratorPDFReader.hasNext()) { PdfReader pdfReader = iteratorPDFReader.next(); // 在目标中为每个源页面创建一个新页面 while (pageOfCurrentReaderPDF < pdfReader.getNumberOfPages()) { document.newPage(); pageOfCurrentReaderPDF++; PdfImportedPage page = writer.getImportedPage(pdfReader, pageOfCurrentReaderPDF); cb.addTemplate(page, 0, 0); pageOfCurrentReaderPDF = 0; out.flush(); out.close(); * 排序page public static void sortpage() throws Exception { FileOutputStream out = new FileOutputStream(FILE_DIR + "sortpage.pdf"); writer.setLinearPageMode(); document.add(new Paragraph(const_PAGE_FIVE, static_FONT_CHINESE)); int[] order = { 4, 3, 2, 1 }; writer.reorderPages(order); * 页眉页脚 public static void setHeaderFooter() throws Exception { PdfWriter writer = PdfWriter.getInstance(document, new FileOutputStream(FILE_DIR + "setHeaderFooter.pdf")); writer.setPageEvent(new PdfPageEventHelper() { public void onEndPage(PdfWriter writer, Document document) { PdfContentByte cb = writer.getDirectContent(); cb.saveState(); cb.beginText(); BaseFont bf = null; try { bf = BaseFont.createFont(BaseFont.HELVETICA, BaseFont.WINANSI, BaseFont.EMBEDDED); } catch (Exception e) { e.printStackTrace(); cb.setFontAndSize(bf, 10); // Header float x = document.top(-20); // 左 cb.showTextAligned(PdfContentByte.ALIGN_LEFT, "H-Left", document.left(), x, 0); // 中 cb.showTextAligned(PdfContentByte.ALIGN_CENTER, writer.getPageNumber() + " page", (document.right() + document.left()) / 2, x, 0); // 右 cb.showTextAligned(PdfContentByte.ALIGN_RIGHT, "H-Right", document.right(), x, 0); // Footer float y = document.bottom(-20); cb.showTextAligned(PdfContentByte.ALIGN_LEFT, "F-Left", document.left(), y, 0); cb.showTextAligned(PdfContentByte.ALIGN_CENTER, writer.getPageNumber() + " page", (document.right() + document.left()) / 2, y, 0); cb.showTextAligned(PdfContentByte.ALIGN_RIGHT, "F-Right", document.right(), y, 0); cb.endText(); cb.restoreState(); document.add(new Paragraph("1 page")); document.add(new Paragraph("2 page")); document.add(new Paragraph("3 page")); document.add(new Paragraph("4 page")); public static void addColumnText() throws Exception { FileOutputStream out = new FileOutputStream(FILE_DIR + "addColumnText.pdf"); PdfContentByte canvas = writer.getDirectContent(); Phrase phrase1 = new Phrase(const_BIBIDONG + " is a beauty!left", static_FONT_CHINESE); Phrase phrase2 = new Phrase(const_BIBIDONG + " is a beauty!right", static_FONT_CHINESE); Phrase phrase3 = new Phrase(const_BIBIDONG + " is a beauty!center", static_FONT_CHINESE); ColumnText.showTextAligned(canvas, Element.ALIGN_LEFT, phrase1, 200, 700, 0); ColumnText.showTextAligned(canvas, Element.ALIGN_RIGHT, phrase2, 200, 600, 0); ColumnText.showTextAligned(canvas, Element.ALIGN_CENTER, phrase3, 200, 500, 0); * 文档视图 public static void setView() throws Exception { FileOutputStream out = new FileOutputStream(FILE_DIR + "setView.pdf"); writer.setPdfVersion(PdfWriter.VERSION_1_5); writer.setViewerPreferences(PdfWriter.PageModeFullScreen);// 全屏 public void onStartPage(PdfWriter writer, Document document) { writer.setTransition(new PdfTransition(PdfTransition.DISSOLVE, 3)); writer.setDuration(5);// 间隔时间 * 压缩PDF到Zip public static void pdfToZip() throws Exception { ZipOutputStream zip = new ZipOutputStream(new FileOutputStream(FILE_DIR + "pdfToZip.zip")); for (int i = 1; i <= 3; i++) { ZipEntry entry = new ZipEntry(const_NEZHA + i + ".pdf"); zip.putNextEntry(entry); document = new Document(); PdfWriter writer = PdfWriter.getInstance(document, zip); writer.setCloseStream(false); document.open(); document.add(new Paragraph(const_NEZHA + i, static_FONT_CHINESE)); document.close(); zip.closeEntry(); zip.close(); * 添加注释 public static void addAnnotation() throws Exception { FileOutputStream out = new FileOutputStream(FILE_DIR + "addAnnotation.pdf"); Document doc = new Document(); PdfWriter writer = PdfWriter.getInstance(doc, out); doc.open(); doc.add(new Paragraph(const_PAGE_FIRST, static_FONT_CHINESE)); doc.add(new Annotation("title", "this is a annotation!")); doc.newPage(); doc.add(new Paragraph(const_PAGE_SECOND, static_FONT_CHINESE)); Chunk chunk = new Chunk(const_NEZHA); chunk.setAnnotation(PdfAnnotation.createText(writer, null, "Title", "this is a another annotation!", false, "Comment")); doc.add(chunk); // 添加附件 //doc.newPage(); //doc.add(new Paragraph(const_PAGE_THIRD, static_FONT_CHINESE)); //Chunk chunk2 = new Chunk(const_BIBIDONG, static_FONT_CHINESE); //PdfAnnotation annotation = PdfAnnotation.createFileAttachment(writer, null, "Title", null, const_JPG_JAVA, const_JPG_NGINX); //annotation.put(PdfName.NAME, new PdfString("Paperclip")); //chunk2.setAnnotation(annotation); //doc.add(chunk2); doc.close(); }以上就是关于“Java操作pdf的工具类itext怎么处理”这篇文章的内容，相信大家都有了一定的了解，希望小编分享的内容对大家有帮助，若想了解更多相关的知识内容，请关注亿速云行业资讯频道。
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