生成pdf

public static void writeSimplePdf() throws Exception{
//1.新建document对象
//第一个参数是页面大小。接下来的参数分别是左、右、上和下页边距。
Document document = new Document(PageSize.A4, 50, 50, 50, 50);
//2.建立一个书写器(Writer)与document对象关联，通过书写器(Writer)可以将文档写入到磁盘中。
//创建 PdfWriter 对象 第一个参数是对文档对象的引用，第二个参数是文件的实际名称，在该名称中还会给出其输出路径。
PdfWriter writer = PdfWriter.getInstance(document, new FileOutputStream("C:\\ITextTest.pdf"));
//3.打开文档
document.open();
//4.向文档中添加内容
//通过 com.lowagie.text.Paragraph 来添加文本。可以用文本及其默认的字体、颜色、大小等等设置来创建一个默认段落
document.add(new Paragraph("First page of the document."));
document.add(new Paragraph("Some more text on the first page with different color and font type.",
FontFactory.getFont(FontFactory.COURIER, 14, Font.BOLD, new Color(255, 150, 200))));
//5.关闭文档
document.close();
}

/**
* 添加含有章节的pdf文件
* @throws Exception
*/
public static void writeCharpter() throws Exception{
//新建document对象 第一个参数是页面大小。接下来的参数分别是左、右、上和下页边距。
Document document = new Document(PageSize.A4, 20, 20, 20, 20);
//建立一个书写器(Writer)与document对象关联，通过书写器(Writer)可以将文档写入到磁盘中。
PdfWriter writer = PdfWriter.getInstance(document,new FileOutputStream("c:\\ITextTest.pdf"));
//打开文件
document.open();
//标题
document.addTitle("Hello mingri example");
//作者
document.addAuthor("wolf");
//主题
document.addSubject("This example explains how to add metadata.");
document.addKeywords("iText, Hello mingri");
document.addCreator("My program using iText");
// document.newPage();
//向文档中添加内容
document.add(new Paragraph("\n"));
document.add(new Paragraph("\n"));
document.add(new Paragraph("\n"));
document.add(new Paragraph("\n"));
document.add(new Paragraph("\n"));
document.add(new Paragraph("First page of the document."));
document.add(new Paragraph("First page of the document."));
document.add(new Paragraph("First page of the document."));
document.add(new Paragraph("First page of the document."));
document.add(new Paragraph("Some more text on the first page with different color and font type.",
FontFactory.getFont(FontFactory.defaultEncoding, 10,Font.BOLD, new Color(0, 0, 0))));
Paragraph title1 = new Paragraph("Chapter 1",
FontFactory.getFont(FontFactory.HELVETICA, 18, Font.BOLDITALIC, new Color(0, 0,255)));
//新建章节
Chapter chapter1 = new Chapter(title1, 1);
chapter1.setNumberDepth(0);
Paragraph title11 = new Paragraph("This is Section 1 in Cha

pter 1",
FontFactory.getFont(FontFactory.HELVETICA, 16, Font.BOLD,new Color(255, 0, 0)));
Section section1 = chapter1.addSection(title11);
Paragraph someSectionText = new Paragraph("This text comes as part of section 1 of chapter 1.");
section1.add(someSectionText);
someSectionText = new Paragraph("Following is a 3 X 2 table.");
section1.add(someSectionText);
document.add(chapter1);
//关闭文档
document.close();
}