【Java 代码实例 13】Java操作pdf的工具类itext
目录
-
- 一、什么是iText？
- 二、引入jar
-
- 1、项目要使用iText，必须引入jar包
- 2、输出中文，还要引入下面```itext-asian.jar```包
- 3、设置pdf文件密码，还要引入下面```bcprov-jdk15on.jar```包
- 三、iText常用类
- 四、生成PDF步骤
-
- 1、创建文档
- 2、通过书写器将文档写入磁盘
- 3、打开文档
- 4、向文档中添加内容
- 5、关闭文档
- 五、Java操作pdf的工具类itext
- 六、更多的Java代码实例
一、什么是iText？
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。
二、引入jar
1、项目要使用iText，必须引入jar包
<dependency>
<groupId>com.itextpdfgroupId>
<artifactId>itextpdfartifactId>
<version>5.5.6version>
dependency>
2、输出中文，还要引入下面itext-asian.jar包
<dependency>
<groupId>com.itextpdfgroupId>
<artifactId>itext-asianartifactId>
<version>5.2.0version>
dependency>
3、设置pdf文件密码，还要引入下面bcprov-jdk15on.jar包
<dependency>
<groupId>org.bouncycastlegroupId>
<artifactId>bcprov-jdk15onartifactId>
<version>1.47version>
dependency>
三、iText常用类
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；
四、生成PDF步骤
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();
五、Java操作pdf的工具类itext
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
document.open();
document.add(new Paragraph(const_NEZHA, static_FONT_CHINESE));
// 关闭
document.close();
}
/**
* 创建带密码的PDF
*/
public static void createPDFWithPassWord() 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 + "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);
document.open();
document.add(new Paragraph(const_NEZHA, static_FONT_CHINESE));
document.close();
}
/**
* 为PDF添加页
*/
public static void createPDFWithNewPages() throws FileNotFoundException, DocumentException {
document = new Document();
PdfWriter writer = PdfWriter.getInstance(document, new FileOutputStream(FILE_DIR + "createPDFAddNewPages.pdf"));
document.open();
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.newPage();
document.add(new Paragraph(const_PAGE_THIRD, static_FONT_CHINESE));
document.close();
}
/**
* 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");
document = new Document();
PdfWriter.getInstance(document, out);
document.open();
document.add(new Paragraph(const_PAGE_FIRST, static_FONT_CHINESE));
document.newPage();
document.add(new Paragraph(const_PAGE_SECOND, static_FONT_CHINESE));
document.newPage();
document.add(new Paragraph(const_PAGE_THIRD, static_FONT_CHINESE));
document.close();
// 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");
document = new Document();
PdfWriter.getInstance(document, out);
document.open();
// 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.newPage();
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
document.newPage();
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.newPage();
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));
info.add(new Phrase(const_NEZHA));
document.add(info);
// 通过循环添加段落信息
document.newPage();
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);
document.close();
}
/**
* 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");
document = new Document();
PdfWriter.getInstance(document, out);
document.open();
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
document.newPage();
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
document.newPage();
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);
document.close();
}
/**
* 画图
*/
public static void draw() throws Exception {
FileOutputStream out = new FileOutputStream(FILE_DIR + "draw.pdf");
document = new Document();
PdfWriter.getInstance(document, out);
document.open();
// 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);
document.close();
}
/**
* 设置段落
*/
public static void createPDFWithAlignment() throws Exception {
FileOutputStream out = new FileOutputStream(FILE_DIR + "createPDFWithAlignment.pdf");
document = new Document();
PdfWriter.getInstance(document, out);
document.open();
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
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);
document.close();
}
/**
* 删除页
*/
public static void createPDFToDeletePage() throws Exception {
FileOutputStream out = new FileOutputStream(FILE_DIR + "createPDFToDeletePage.pdf");
document = new Document();
PdfWriter writer = PdfWriter.getInstance(document, out);
document.open();
document.add(new Paragraph(const_PAGE_FIRST, static_FONT_CHINESE));
document.newPage();
document.add(new Paragraph(const_PAGE_SECOND, static_FONT_CHINESE));
document.newPage();
document.add(new Paragraph(const_PAGE_THIRD, static_FONT_CHINESE));
document.close();
PdfReader reader = new PdfReader(FILE_DIR + "createPDFToDeletePage.pdf");
reader.selectPages("1,3");
PdfStamper stamp = new PdfStamper(reader, new FileOutputStream(FILE_DIR + "createPDFToDeletePage2.pdf"));
stamp.close();
reader.close();
}
/**
* 插入 page
*/
public static void insertPage() throws Exception {
FileOutputStream out = new FileOutputStream(FILE_DIR + "insertPage.pdf");
document = new Document();
PdfWriter.getInstance(document, out);
document.open();
document.add(new Paragraph(const_PAGE_FIRST, static_FONT_CHINESE));
document.newPage();
document.add(new Paragraph(const_PAGE_SECOND, static_FONT_CHINESE));
document.newPage();
document.add(new Paragraph(const_PAGE_THIRD, static_FONT_CHINESE));
document.close();
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);
stamp.close();
reader.close();
}
/**
* 分割 page
*/
public static void splitPDF() throws Exception {
FileOutputStream out = new FileOutputStream(FILE_DIR + "splitPDF.pdf");
document = new Document();
PdfWriter.getInstance(document, out);
document.open();
document.add(new Paragraph(const_PAGE_FIRST, static_FONT_CHINESE));
document.newPage();
document.add(new Paragraph(const_PAGE_SECOND, static_FONT_CHINESE));
document.newPage();
document.add(new Paragraph(const_PAGE_THIRD, static_FONT_CHINESE));
document.newPage();
document.add(new Paragraph(const_PAGE_FOUR, static_FONT_CHINESE));
document.close();
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);
dd.newPage();
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);
dd2.newPage();
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();
PdfWriter writer = PdfWriter.getInstance(document, out);
document.open();
PdfContentByte cb = writer.getDirectContent();
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();
document.close();
out.close();
}
/**
* 排序page
*/
public static void sortpage() throws Exception {
FileOutputStream out = new FileOutputStream(FILE_DIR + "sortpage.pdf");
document = new Document();
PdfWriter writer = PdfWriter.getInstance(document, out);
writer.setLinearPageMode();
document.open();
document.add(new Paragraph(const_PAGE_FIRST, static_FONT_CHINESE));
document.newPage();
document.add(new Paragraph(const_PAGE_SECOND, static_FONT_CHINESE));
document.newPage();
document.add(new Paragraph(const_PAGE_THIRD, static_FONT_CHINESE));
document.newPage();
document.add(new Paragraph(const_PAGE_FOUR, static_FONT_CHINESE));
document.newPage();
document.add(new Paragraph(const_PAGE_FIVE, static_FONT_CHINESE));
int[] order = { 4, 3, 2, 1 };
writer.reorderPages(order);
document.close();
}
/**
* 页眉页脚
*/
public static void setHeaderFooter() throws Exception {
document = new Document();
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);
// 左
cb.showTextAligned(PdfContentByte.ALIGN_LEFT, "F-Left", document.left(), y, 0);
// 中
cb.showTextAligned(PdfContentByte.ALIGN_CENTER, writer.getPageNumber() + " page", (document.right() + document.left()) / 2, y, 0);
// 右
cb.showTextAligned(PdfContentByte.ALIGN_RIGHT, "F-Right", document.right(), y, 0);
cb.endText();
cb.restoreState();
}
});
document.open();
document.add(new Paragraph("1 page"));
document.newPage();
document.add(new Paragraph("2 page"));
document.newPage();
document.add(new Paragraph("3 page"));
document.newPage();
document.add(new Paragraph("4 page"));
document.close();
}
public static void addColumnText() throws Exception {
FileOutputStream out = new FileOutputStream(FILE_DIR + "addColumnText.pdf");
Document document = new Document();
PdfWriter writer = PdfWriter.getInstance(document, out);
document.open();
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);
document.close();
}
/**
* 文档视图
*/
public static void setView() throws Exception {
FileOutputStream out = new FileOutputStream(FILE_DIR + "setView.pdf");
document = new Document();
PdfWriter writer = PdfWriter.getInstance(document, out);
writer.setPdfVersion(PdfWriter.VERSION_1_5);
writer.setViewerPreferences(PdfWriter.PageModeFullScreen);// 全屏
writer.setPageEvent(new PdfPageEventHelper() {
public void onStartPage(PdfWriter writer, Document document) {
writer.setTransition(new PdfTransition(PdfTransition.DISSOLVE, 3));
writer.setDuration(5);// 间隔时间
}
});
document.open();
document.add(new Paragraph(const_PAGE_FIRST, static_FONT_CHINESE));
document.newPage();
document.add(new Paragraph(const_PAGE_SECOND, static_FONT_CHINESE));
document.newPage();
document.add(new Paragraph(const_PAGE_THIRD, static_FONT_CHINESE));
document.newPage();
document.add(new Paragraph(const_PAGE_FOUR, static_FONT_CHINESE));
document.newPage();
document.add(new Paragraph(const_PAGE_FIVE, static_FONT_CHINESE));
document.close();
}
/**
* 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);
writer.setLinearPageMode();
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();
}
}
六、更多的Java代码实例
【Java 代码实例 1】java反射三种方法
…
【Java 代码实例 4】javacompiler编译多java文件
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【Java 代码实例 6】FileUtils、StringUtil、CollectionUtils、ArrayUtils（附代码示例）
【Java 代码实例 7】jsoup解析html
【Java 代码实例 8】qrcode生成二维码
【Java 代码实例 9】Java通过Process执行C# exe程序
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