java使用itext包生成pdf文档代码，itextpdf,如下示例代码演示了如何创

java使用itext包生成pdf文档代码，itextpdf,如下示例代码演示了如何创

如下示例代码演示了如何创建一个pdf文档，并给pdf文件添加作者，摘要，描述等meta信息，演示了如何添加List，如何在pdf中插入table，如何插入段落，链接等信息:

package de.vogella.itext.write;import java.io.FileOutputStream;import java.util.Date;import com.itextpdf.text.Anchor;import com.itextpdf.text.BadElementException;import com.itextpdf.text.BaseColor;import com.itextpdf.text.Chapter;import com.itextpdf.text.Document;import com.itextpdf.text.DocumentException;import com.itextpdf.text.Element;import com.itextpdf.text.Font;import com.itextpdf.text.List;import com.itextpdf.text.ListItem;import com.itextpdf.text.Paragraph;import com.itextpdf.text.Phrase;import com.itextpdf.text.Section;import com.itextpdf.text.pdf.PdfPCell;import com.itextpdf.text.pdf.PdfPTable;import com.itextpdf.text.pdf.PdfWriter;public class FirstPdf {  private static String FILE = "c:/temp/FirstPdf.pdf";  private static Font catFont = new Font(Font.FontFamily.TIMES_ROMAN, 18,      Font.BOLD);  private static Font redFont = new Font(Font.FontFamily.TIMES_ROMAN, 12,      Font.NORMAL, BaseColor.RED);  private static Font subFont = new Font(Font.FontFamily.TIMES_ROMAN, 16,      Font.BOLD);  private static Font smallBold = new Font(Font.FontFamily.TIMES_ROMAN, 12,      Font.BOLD);  public static void main(String[] args) {    try {      Document document = new Document();      PdfWriter.getInstance(document, new FileOutputStream(FILE));      document.open();      addMetaData(document);      addTitlePage(document);      addContent(document);      document.close();    } catch (Exception e) {      e.printStackTrace();    }  }  // iText allows to add metadata to the PDF which can be viewed in your Adobe  // Reader  // under File -> Properties  private static void addMetaData(Document document) {    document.addTitle("My first PDF");    document.addSubject("Using iText");    document.addKeywords("Java, PDF, iText");    document.addAuthor("Lars Vogel");    document.addCreator("Lars Vogel");  }  private static void addTitlePage(Document document)      throws DocumentException {    Paragraph preface = new Paragraph();    // We add one empty line    addEmptyLine(preface, 1);    // Lets write a big header    preface.add(new Paragraph("Title of the document", catFont));    addEmptyLine(preface, 1);    // Will create: Report generated by: _name, _date    preface.add(new Paragraph("Report generated by: " + System.getProperty("user.name") + ", " + new Date(), //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$        smallBold));    addEmptyLine(preface, 3);    preface.add(new Paragraph("This document describes something which is very important ",        smallBold));    addEmptyLine(preface, 8);    preface.add(new Paragraph("This document is a preliminary version and not subject to your license agreement or any other agreement with vogella.com ;-).",        redFont));    document.add(preface);    // Start a new page    document.newPage();  }  private static void addContent(Document document) throws DocumentException {    Anchor anchor = new Anchor("First Chapter", catFont);    anchor.setName("First Chapter");    // Second parameter is the number of the chapter    Chapter catPart = new Chapter(new Paragraph(anchor), 1);    Paragraph subPara = new Paragraph("Subcategory 1", subFont);    Section subCatPart = catPart.addSection(subPara);    subCatPart.add(new Paragraph("Hello"));    subPara = new Paragraph("Subcategory 2", subFont);    subCatPart = catPart.addSection(subPara);    subCatPart.add(new Paragraph("Paragraph 1"));    subCatPart.add(new Paragraph("Paragraph 2"));    subCatPart.add(new Paragraph("Paragraph 3"));    // Add a list    createList(subCatPart);    Paragraph paragraph = new Paragraph();    addEmptyLine(paragraph, 5);    subCatPart.add(paragraph);    // Add a table    createTable(subCatPart);    // Now add all this to the document    document.add(catPart);    // Next section    anchor = new Anchor("Second Chapter", catFont);    anchor.setName("Second Chapter");    // Second parameter is the number of the chapter    catPart = new Chapter(new Paragraph(anchor), 1);    subPara = new Paragraph("Subcategory", subFont);    subCatPart = catPart.addSection(subPara);    subCatPart.add(new Paragraph("This is a very important message"));    // Now add all this to the document    document.add(catPart);  }  private static void createTable(Section subCatPart)      throws BadElementException {    PdfPTable table = new PdfPTable(3);    // t.setBorderColor(BaseColor.GRAY);    // t.setPadding(4);    // t.setSpacing(4);    // t.setBorderWidth(1);    PdfPCell c1 = new PdfPCell(new Phrase("Table Header 1"));    c1.setHorizontalAlignment(Element.ALIGN_CENTER);    table.addCell(c1);    c1 = new PdfPCell(new Phrase("Table Header 2"));    c1.setHorizontalAlignment(Element.ALIGN_CENTER);    table.addCell(c1);    c1 = new PdfPCell(new Phrase("Table Header 3"));    c1.setHorizontalAlignment(Element.ALIGN_CENTER);    table.addCell(c1);    table.setHeaderRows(1);    table.addCell("1.0");    table.addCell("1.1");    table.addCell("1.2");    table.addCell("2.1");    table.addCell("2.2");    table.addCell("2.3");    subCatPart.add(table);  }  private static void createList(Section subCatPart) {    List list = new List(true, false, 10);    list.add(new ListItem("First point"));    list.add(new ListItem("Second point"));    list.add(new ListItem("Third point"));    subCatPart.add(list);  }  private static void addEmptyLine(Paragraph paragraph, int number) {    for (int i = 0; i < number; i++) {      paragraph.add(new Paragraph(" "));    }  }}