Java开源工具iText生成PDF文件

iText是一个非常著名的能够快速产生PDF文件的Java类库。支持文本，表格，图形的操作，可以方便的跟Servlet进行结合。iText不仅可以生成PDF或rtf的文档，而且可以将XML、Html文件转化为PDF文件。

iText官网：http://itextpdf.com/

1、maven

 <!-- https://mvnrepository.com/artifact/com.itextpdf/itextpdf --><dependency>    <groupId>com.itextpdf</groupId>    <artifactId>itextpdf</artifactId>    <version>5.5.10</version></dependency>

2、代码

import com.itextpdf.text.*;import com.itextpdf.text.html.simpleparser.HTMLWorker;import com.itextpdf.text.pdf.*;import com.itextpdf.text.pdf.parser.PdfTextExtractor;import java.io.*;import java.util.Date;import java.util.zip.ZipEntry;import java.util.zip.ZipOutputStream;public class PDFUtil {    /*     * 1、简单的生成一个pdf文件     */    public static void createPDFOne(String fileName){        //Step 1—Create a Document.        Document document = new Document();        try {            //Step 2—Get a PdfWriter instance.            PdfWriter.getInstance(document, new FileOutputStream(fileName));            //Step 3—Open the Document.            document.open();            //Step 4—Add content.            document.add(new Paragraph("Hello World！"));            //Step 5—Close the Document.            document.close();        } catch (FileNotFoundException e) {            e.printStackTrace();        } catch (DocumentException e) {            e.printStackTrace();        } finally {            // step 5            document.close();        }    }    /**     * 2、生成包含页面大小,页面背景色,页边空白,Title,Author,Subject,Keywords的pdf文件     */    public static void createPDFTwo(String filename) {        //页面大小        Rectangle rect = new Rectangle(PageSize.A4);        //页面背景色        rect.setBackgroundColor(BaseColor.ORANGE);        Document document = new Document(rect);        try {            PdfWriter writer = PdfWriter.getInstance(document, new FileOutputStream(filename));            //PDF版本            writer.setPdfVersion(PdfWriter.VERSION_1_7);            //文档属性            document.addTitle("create pdf file");            document.addAuthor("eff666");            document.addSubject("This is the subject of the PDF file.");            document.addKeywords("This is the keyword of the PDF file.");            document.open();            //文档正文内容            document.add(new Paragraph("Hello World!"));            document.add(new Paragraph(new Date().toString()));            //添加Page            document.newPage();            writer.setPageEmpty(false);            document.add(new Paragraph("Second page"));            document.newPage();        } catch (FileNotFoundException e) {            e.printStackTrace();        } catch (DocumentException e) {            e.printStackTrace();        } finally {            document.close();        }    }    /**     * 3、设置密码     * @param fileName     */    public static void createPDFThree(String fileName){        //页面大小        Rectangle rect = new Rectangle(PageSize.A4);        //页面背景色        rect.setBackgroundColor(BaseColor.ORANGE);        Document document = new Document(rect);        try {            PdfWriter writer = PdfWriter.getInstance(document, new FileOutputStream(fileName));            // 设置密码为："World"//            writer.setEncryption("Hello".getBytes(), "World".getBytes(),//                PdfWriter.ALLOW_SCREENREADERS,//                PdfWriter.STANDARD_ENCRYPTION_128);            writer.setEncryption("Hello".getBytes(), "World".getBytes(), PdfWriter.ALLOW_COPY                    | PdfWriter.ALLOW_PRINTING, PdfWriter.STANDARD_ENCRYPTION_128);            document.open();            document.add(new Paragraph("Hello World"));        } catch (FileNotFoundException e) {            e.printStackTrace();        } catch (DocumentException e) {            e.printStackTrace();        } finally {            document.close();        }    }    /**     * 4、插入Chunk, Phrase, Paragraph, List     * @param fileName     */    public static void createPDFFour(String fileName){        //页面大小        Rectangle rect = new Rectangle(PageSize.A4);        //页面背景色        rect.setBackgroundColor(BaseColor.WHITE);        Document document = new Document(rect);        try {            PdfWriter.getInstance(document, new FileOutputStream(fileName));            document.open();            //Chunk对象: a String, a Font, and some attributes            document.add(new Chunk("Java"));            document.add(new Chunk(" "));            Font font = new Font(Font.FontFamily.HELVETICA, 6, Font.BOLD, BaseColor.WHITE);            Chunk id = new Chunk("99", font);            id.setBackground(BaseColor.BLACK, 1f, 0.5f, 1f, 1.5f);            id.setTextRise(6);            document.add(id);            document.add(Chunk.NEWLINE);            document.add(new Chunk("C++"));            document.add(new Chunk(" "));            Font font2 = new Font(Font.FontFamily.HELVETICA, 6, Font.BOLD, BaseColor.WHITE);            Chunk id2 = new Chunk("99", font2);            id2.setBackground(BaseColor.BLACK, 1f, 0.5f, 1f, 1.5f);            id2.setTextRise(6);            id2.setUnderline(0.2f, -2f);            document.add(id2);            document.add(Chunk.NEWLINE);            //Phrase对象: a List of Chunks with leading            document.newPage();            document.add(new Phrase("Second page"));            Phrase director = new Phrase();            Chunk name = new Chunk("Java");            name.setUnderline(0.2f, -2f);            director.add(name);            director.add(new Chunk(","));            director.add(new Chunk(" "));            director.add(new Chunk("98"));            director.setLeading(24);            document.add(director);            Phrase director2 = new Phrase();            Chunk name2 = new Chunk("C++");            name2.setUnderline(0.2f, -2f);            director2.add(name2);            director2.add(new Chunk(","));            director2.add(new Chunk(" "));            director2.add(new Chunk("98"));            director2.setLeading(24);            document.add(director2);            //Paragraph对象: a Phrase with extra properties and a newline            document.newPage();            document.add(new Paragraph("Third page"));            Paragraph info = new Paragraph();            info.add(new Chunk("Java "));            info.add(new Chunk("97"));            info.add(Chunk.NEWLINE);            info.add(new Phrase("C++ "));            info.add(new Phrase("97"));            document.add(info);            //List对象: a sequence of Paragraphs called ListItem            document.newPage();            document.add(new Paragraph("Fourth page"));            List list = new List(List.ORDERED);            for (int i = 0; i < 10; i++) {                ListItem item = new ListItem(String.format("%s: %d movies", "country" + (i + 1), (i + 1) * 100),                        new Font(Font.FontFamily.HELVETICA, 6, Font.BOLD, BaseColor.WHITE));                List movielist = new List(List.ORDERED, List.ALPHABETICAL);                movielist.setLowercase(List.LOWERCASE);                for (int j = 0; j < 2; j++) {                    ListItem movieitem = new ListItem("Title" + (j + 1));                    List directorlist = new List(List.UNORDERED);                    for (int k = 0; k < 3; k++) {                        directorlist.add(String.format("%s, %s", "Name1" + (k + 1), "Name2" + (k + 1)));                    }                    movieitem.add(directorlist);                    movielist.add(movieitem);                }                item.add(movielist);                list.add(item);            }            document.add(list);        } catch (IOException e){            e.printStackTrace();        } catch (DocumentException e) {            e.printStackTrace();        } finally {            document.close();        }    }    /**     * 5、插入Anchor, Image, Chapter, Section     * @param fileName     */    public static void createPDFFive(String fileName){        //页面大小        Rectangle rect = new Rectangle(PageSize.A4);        //页面背景色        rect.setBackgroundColor(BaseColor.WHITE);        Document document = new Document(rect);        try {            PdfWriter.getInstance(document, new FileOutputStream(fileName));            document.open();            //Anchor对象: internal and external links            Paragraph country = new Paragraph();            Anchor dest = new Anchor("Java", new Font(Font.FontFamily.HELVETICA, 14, Font.BOLD, BaseColor.BLUE));            dest.setName("Java");            dest.setReference("http://www.java.com");//external            country.add(dest);            country.add(String.format(": %d people", 10000));            document.add(country);            document.newPage();            Anchor toUS = new Anchor("Go to first page.", new Font(Font.FontFamily.HELVETICA, 14, Font.BOLD, BaseColor.BLUE));            toUS.setReference("#CN");//internal            document.add(toUS);            //Image对象            document.newPage();            Image img = Image.getInstance("F:\\pdf\\1483795948_7815.png");            img.setAlignment(Image.LEFT | Image.TEXTWRAP);            img.setBorder(Image.BOX);            img.setBorderWidth(10);            img.setBorderColor(BaseColor.WHITE);            img.scaleToFit(1000, 72);//大小            img.setRotationDegrees(-30);//旋转            document.add(img);            //Chapter, Section对象（目录）            document.newPage();            Paragraph title = new Paragraph("Title");            Chapter chapter = new Chapter(title, 1);            title = new Paragraph("Section A");            Section section = chapter.addSection(title);            section.setBookmarkTitle("bmk");            section.setIndentation(30);            section.setBookmarkOpen(false);            section.setNumberStyle(Section.NUMBERSTYLE_DOTTED_WITHOUT_FINAL_DOT);            Section subsection = section.addSection(new Paragraph("Sub Section A"));            subsection.setIndentationLeft(20);            subsection.setNumberDepth(1);            document.add(chapter);        } catch (IOException e) {            e.printStackTrace();        } catch (DocumentException e) {            e.printStackTrace();        } finally {            document.close();        }    }    /**     * 6、位置调整     * @param fileName     */    public static void createPDFSix(String fileName){        //页面大小        Rectangle rect = new Rectangle(PageSize.A4);        //页面背景色        rect.setBackgroundColor(BaseColor.WHITE);        Document document = new Document(rect);        try {            PdfWriter.getInstance(document, new FileOutputStream(fileName));            document.open();            Paragraph p = new Paragraph("iText是一个非常著名的能够快速产生PDF文件的Java类库。支持文本，表格，图形的操作，可以方便的跟Servlet进行结合。iText不仅可以生成PDF或rtf的文档，而且可以将XML、Html文件转化为PDF文件。");            //默认            p.setAlignment(Element.ALIGN_JUSTIFIED);            document.add(p);            document.newPage();            p.setAlignment(Element.ALIGN_JUSTIFIED);            p.setIndentationLeft(1 * 15f);            p.setIndentationRight((5 - 1) * 15f);            document.add(p);            //居右            document.newPage();            p.setAlignment(Element.ALIGN_RIGHT);            p.setSpacingAfter(15f);            document.add(p);            //居左            document.newPage();            p.setAlignment(Element.ALIGN_LEFT);            p.setSpacingBefore(15f);            document.add(p);            //居中            document.newPage();            p.setAlignment(Element.ALIGN_CENTER);            p.setSpacingAfter(15f);            p.setSpacingBefore(15f);            document.add(p);        } catch (FileNotFoundException e) {            e.printStackTrace();        } catch (DocumentException e) {            e.printStackTrace();        } finally {            document.close();        }    }    /**     * 7、压缩PDF到Zip     * @param fileName     */    public static void createPDFSeven(String fileName){        //页面大小       // Document document = new Document();        ZipOutputStream zip = null;        try {            zip = new ZipOutputStream(new FileOutputStream(fileName));            for (int i = 1; i <= 3; i++) {                ZipEntry entry = new ZipEntry("pdf_00" + i + ".pdf");                zip.putNextEntry(entry);                Document document = new Document();                PdfWriter writer = PdfWriter.getInstance(document, zip);                writer.setCloseStream(false);                document.open();                document.add(new Paragraph("Hello " + i));                document.close();                zip.closeEntry();            }        } catch (IOException e) {            e.printStackTrace();        } catch (DocumentException e) {            e.printStackTrace();        } finally {            try {                zip.close();            } catch (IOException e) {                e.printStackTrace();            }        }    }    /**     * 8、HTML 转为 PDF     * @param fileName     */    public static void createPDFEight(String fileName){        Document document = new Document(PageSize.LETTER);        try {            PdfWriter.getInstance(document, new FileOutputStream(fileName));            document.open();            HTMLWorker htmlWorker = new HTMLWorker(document);            htmlWorker.parse(new StringReader("<h1>This is a test!<body>\ntest</body></h1>"));            document.close();        } catch (IOException e) {            e.printStackTrace();        } catch (DocumentException e) {            e.printStackTrace();        } finally {            document.close();        }    }    /**     * 9、读取pdf文件内容     * @param path     */    private static void readPDF(String path)    {        //byte[] contentBytes;        //String byteToStr;        String content = "";        int pageNum = 0;        try {            PdfReader reader = new PdfReader(path);            pageNum = reader.getNumberOfPages();//获得页数            for (int i = 1; i < pageNum; i++) {// 从第1页开始读                //contentBytes = reader.getPageContent(i);                content += PdfTextExtractor.getTextFromPage(reader, i);            }        } catch (IOException e) {            e.printStackTrace();        }        System.out.println(content);    }}