Java操作pdf的工具类itext的处理方法

<dependency>

     <groupId>com.itextpdf</groupId>

     <artifactId>itextpdf</artifactId>

     <version> 5.5 . 6 </version>

</dependency>

<dependency>

      <groupId>com.itextpdf</groupId>

      <artifactId>itext-asian</artifactId>

      <version> 5.2 . 0 </version>

  </dependency>

<dependency>

     <groupId>org.bouncycastle</groupId>

     <artifactId>bcprov-jdk15on</artifactId>

     <version> 1.47 </version>

</dependency>

Document document = new Document();

PdfWriter writer = PdfWriter.getInstance(document, new FileOutputStream(FILE_DIR + "createPDFWithColor.pdf" ));

document.open();

document.add( new Paragraph( "i love CSDN" ));

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://HdhCmsTestbaidu测试数据" ;

     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 id="codetool">

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原文链接：https://blog.csdn.net/guorui_java/article/details/124229103

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