利用itext操作pdf从数据库导出大量数据--添加水印（四）

相关代码以及jar包说明文件：http://download.csdn.net/detail/baby_soga/7105763

Java代码


package com.fruitking.testpdf.util;

import java.awt.Color;

import java.io.File;

import java.io.FileNotFoundException;

import java.io.FileOutputStream;

import java.io.IOException;

import java.io.OutputStream;

import java.net.MalformedURLException;

import com.lowagie.text.BadElementException;

import com.lowagie.text.Document;

import com.lowagie.text.DocumentException;

import com.lowagie.text.Element;

import com.lowagie.text.Font;

import com.lowagie.text.Image;

import com.lowagie.text.Paragraph;

import com.lowagie.text.Phrase;

import com.lowagie.text.pdf.BaseFont;

import com.lowagie.text.pdf.ColumnText;

import com.lowagie.text.pdf.PdfContentByte;

import com.lowagie.text.pdf.PdfGState;

import com.lowagie.text.pdf.PdfPCell;

import com.lowagie.text.pdf.PdfPTable;

import com.lowagie.text.pdf.PdfPageEventHelper;

import com.lowagie.text.pdf.PdfReader;

import com.lowagie.text.pdf.PdfStamper;

import com.lowagie.text.pdf.PdfWriter;

public class PDFCreate2WaterMark {

/**

* 根据图片文件路径构建一个图片对象

* @param waterMarkFullFilePath

* @param xPosition

* @param yPosition

* @return

* @throws BadElementException

* @throws MalformedURLException

* @throws IOException

*/

private Image getWaterMarkImage(String waterMarkFullFilePath,float xPosition,float yPosition)throws BadElementException, MalformedURLException, IOException{

Image waterMarkImage = Image.getInstance(waterMarkFullFilePath);

waterMarkImage.setAbsolutePosition(xPosition, yPosition);//坐标

waterMarkImage.setRotation(-20);//旋转 弧度

waterMarkImage.setRotationDegrees(-45);//旋转 角度

waterMarkImage.scalePercent(100);//依照比例缩放

return waterMarkImage;

}

/**

* 对一个图片对象设置展示位置等信息，该对象重复利用，减少PDF文件大小

* @param waterMarkImage

* @param xPosition

* @param yPosition

* @return

*/

private Image getSingletonWaterMarkImage(Image waterMarkImage,float xPosition,float yPosition){

waterMarkImage.setAbsolutePosition(xPosition, yPosition);//坐标

waterMarkImage.setRotation(-20);//旋转 弧度

waterMarkImage.setRotationDegrees(-45);//旋转 角度

waterMarkImage.scalePercent(100);//依照比例缩放

return waterMarkImage;

}

/**

* 对于已存在的PDF文件增加图片水印

* 图片水印按照两列三行模式，并旋转45度正斜形式添加水印图片

* @param pdfInputFile

* @param pdfOutputFile

* @param waterMarkFullFilePath

*/

public void addPictureWaterMark(String pdfInputFile,String pdfOutputFile,String waterMarkFullFilePath) {

PdfStamper pdfStamper = null;

PdfReader reader = null;

try {

//构造需要添加水印的PDF文件对象

reader = new PdfReader(pdfInputFile);

int pdfFileTotalPages = reader.getNumberOfPages() + 1;

//创建添加水印后的PDF文件对象

OutputStream pdfOutputStream = new FileOutputStream(pdfOutputFile);

pdfStamper = new PdfStamper(reader,pdfOutputStream);

PdfContentByte underPdfContent = null;

float pageWidth = 0;

float pageHeight = 0;

for (int i = 1; i < pdfFileTotalPages; i++) {

pageWidth = reader.getPageSize(i).getWidth();//获取pdf文档页面宽度

pageHeight = reader.getPageSize(i).getHeight();//获取pdf文档页面高度

underPdfContent = pdfStamper.getUnderContent(i);

//添加水印图片，文档正文内容采用横向三列，竖向两列模式增加图片水印

underPdfContent.addImage(getWaterMarkImage(waterMarkFullFilePath,pageWidth*0.2f,pageHeight*0.1f));

underPdfContent.addImage(getWaterMarkImage(waterMarkFullFilePath,pageWidth*0.2f,pageHeight*0.4f));

underPdfContent.addImage(getWaterMarkImage(waterMarkFullFilePath,pageWidth*0.2f,pageHeight*0.7f));

underPdfContent.addImage(getWaterMarkImage(waterMarkFullFilePath,pageWidth*0.6f,pageHeight*0.1f));

underPdfContent.addImage(getWaterMarkImage(waterMarkFullFilePath,pageWidth*0.6f,pageHeight*0.4f));

underPdfContent.addImage(getWaterMarkImage(waterMarkFullFilePath,pageWidth*0.6f,pageHeight*0.7f));

PdfGState gs = new PdfGState();

gs.setFillOpacity(0.2f);//设置透明度为0.2

underPdfContent.setGState(gs);

}

}catch(DocumentException de){

de.printStackTrace();

System.err.println("pdf add watermark documnet opt: " + de.getMessage());

}catch(IOException ioe){

ioe.printStackTrace();

System.err.println("pdf add watermark iostream opt: " + ioe.getMessage());

}finally{

if(reader!=null){

reader.close();

}

if(pdfStamper!=null){

try{

pdfStamper.close();

}catch(DocumentException de){

de.printStackTrace();

System.err.println("pdf add watermark close stamper: " + de.getMessage());

}catch(IOException ioe){

ioe.printStackTrace();

System.err.println("pdf add watermark close stream: " + ioe.getMessage());

}

}

}

}

/**

* 对于已存在的PDF文件增加图片水印，水印图片以单例模式添加，避免极大的增加PDF文件大小

* 图片水印按照两列三行模式，并旋转45度正斜形式添加水印图片

* @param pdfInputFile

* @param pdfOutputFile

* @param waterMarkFullFilePath

*/

public void addSingletonPictureWaterMark(String pdfInputFile,String pdfOutputFile,String waterMarkFullFilePath) {

PdfStamper pdfStamper = null;

PdfReader reader = null;

try {

//构造需要添加水印的PDF文件对象

reader = new PdfReader(pdfInputFile);

int pdfFileTotalPages = reader.getNumberOfPages() + 1;

//创建添加水印后的PDF文件对象

OutputStream pdfOutputStream = new FileOutputStream(pdfOutputFile);

pdfStamper = new PdfStamper(reader,pdfOutputStream);

PdfContentByte underPdfContent = null;

float pageWidth = 0;

float pageHeight = 0;

//仅设置一个图片实例对象，整个PDF文档只应用一个图片对象，极大减少因为增加图片水印导致PDF文档大小增加

Image waterMarkImage = Image.getInstance(waterMarkFullFilePath);

for (int i = 1; i < pdfFileTotalPages; i++) {

pageWidth = reader.getPageSize(i).getWidth();//获取pdf文档页面宽度

pageHeight = reader.getPageSize(i).getHeight();//获取pdf文档页面高度

underPdfContent = pdfStamper.getUnderContent(i);

//添加水印图片，文档正文内容采用横向三列，竖向两列模式增加图片水印

underPdfContent.addImage(getSingletonWaterMarkImage(waterMarkImage,pageWidth*0.2f,pageHeight*0.1f));

underPdfContent.addImage(getSingletonWaterMarkImage(waterMarkImage,pageWidth*0.2f,pageHeight*0.4f));

underPdfContent.addImage(getSingletonWaterMarkImage(waterMarkImage,pageWidth*0.2f,pageHeight*0.7f));

underPdfContent.addImage(getSingletonWaterMarkImage(waterMarkImage,pageWidth*0.6f,pageHeight*0.1f));

underPdfContent.addImage(getSingletonWaterMarkImage(waterMarkImage,pageWidth*0.6f,pageHeight*0.4f));

underPdfContent.addImage(getSingletonWaterMarkImage(waterMarkImage,pageWidth*0.6f,pageHeight*0.7f));

PdfGState gs = new PdfGState();

gs.setFillOpacity(0.2f);//设置透明度为0.2

underPdfContent.setGState(gs);

}

}catch(DocumentException de){

de.printStackTrace();

System.err.println("pdf add watermark documnet opt: " + de.getMessage());

}catch(IOException ioe){

ioe.printStackTrace();

System.err.println("pdf add watermark iostream opt: " + ioe.getMessage());

}finally{

if(reader!=null){

reader.close();

}

if(pdfStamper!=null){

try{

pdfStamper.close();

}catch(DocumentException de){

de.printStackTrace();

System.err.println("pdf add watermark close stamper: " + de.getMessage());

}catch(IOException ioe){

ioe.printStackTrace();

System.err.println("pdf add watermark close stream: " + ioe.getMessage());

}

}

}

}

/**

* 对于已存在的PDF文件增加文字水印

* 文字水印按照两列三行模式，并旋转45度正斜形式添加文字水印

* @param pdfInputFile

* @param pdfOutputFile

* @param waterMarkText

*/

private void addTextWaterMark(String pdfInputFile,String pdfOutputFile,String waterMarkText) {

PdfStamper pdfStamper = null;

PdfReader reader = null;

try {

//构造需要添加水印的PDF文件对象

reader = new PdfReader(pdfInputFile);

int pdfFileTotalPages = reader.getNumberOfPages() + 1;

//创建添加水印后的PDF文件对象

OutputStream pdfOutputStream = new FileOutputStream(pdfOutputFile);

pdfStamper = new PdfStamper(reader,pdfOutputStream);

PdfContentByte underPdfContent = null;

float pageWidth = 0;

float pageHeight = 0;

for (int i = 1; i < pdfFileTotalPages; i++) {

pageWidth = reader.getPageSize(i).getWidth();

pageHeight = reader.getPageSize(i).getHeight();

underPdfContent = pdfStamper.getUnderContent(i);

BaseFont base = BaseFont.createFont("STSong-Light", "UniGB-UCS2-H",BaseFont.NOT_EMBEDDED);

underPdfContent.beginText();

underPdfContent.setColorFill(Color.CYAN);

underPdfContent.setFontAndSize(base, 20);

// 设置水印文字字体倾斜 开始

underPdfContent.showTextAligned(Element.ALIGN_LEFT, waterMarkText,pageWidth*0.2f,pageHeight*0.15f, 45);

underPdfContent.showTextAligned(Element.ALIGN_LEFT, waterMarkText,pageWidth*0.2f,pageHeight*0.45f, 45);

underPdfContent.showTextAligned(Element.ALIGN_LEFT, waterMarkText,pageWidth*0.2f,pageHeight*0.75f, 45);

underPdfContent.showTextAligned(Element.ALIGN_LEFT, waterMarkText,pageWidth*0.6f,pageHeight*0.15f, 45);

underPdfContent.showTextAligned(Element.ALIGN_LEFT, waterMarkText,pageWidth*0.6f,pageHeight*0.45f, 45);

underPdfContent.showTextAligned(Element.ALIGN_LEFT, waterMarkText,pageWidth*0.6f,pageHeight*0.75f, 45);

// 字体设置结束

underPdfContent.endText();

PdfGState gs = new PdfGState();

gs.setFillOpacity(0.2f);// 设置透明度为0.2

underPdfContent.setGState(gs);

}

}catch(DocumentException de){

de.printStackTrace();

System.err.println("pdf add watermark documnet opt: " + de.getMessage());

}catch(IOException ioe){

ioe.printStackTrace();

System.err.println("pdf add watermark iostream opt: " + ioe.getMessage());

}finally{

if(reader!=null){

reader.close();

}

if(pdfStamper!=null){

try{

pdfStamper.close();

}catch(DocumentException de){

de.printStackTrace();

System.err.println("pdf add watermark close stamper: " + de.getMessage());

}catch(IOException ioe){

ioe.printStackTrace();

System.err.println("pdf add watermark close stream: " + ioe.getMessage());

}

}

}

}

/**

* 创建一份普通表格的PDF文件时同时创建文字水印

* @param fullFilePath

* @return

*/

public boolean createNormalTableWithTextWaterMark(String fullFilePath,int rowsNumber,String waterMarkText){

String[][] normalTableContent = new String[][]{

{"序号","姓名","年龄","职业","籍贯","学历","单位名称","联系电话","联系地址","备注"},

{"1","许果","31","软件工程师","浙江杭州","大学本科","浙江水果大王信息技术有限公司","18905710571","浙江省杭州市西湖区三墩镇三墩街188号","他是一名优秀的IT工程师，日常爱好旅游，运动"}

};

Document pdfDocument = new Document();

try {

//构建一个PDF文档输出流程

OutputStream pdfFileOutputStream = new FileOutputStream(new File(fullFilePath));

PdfWriter pdfWriter = PdfWriter.getInstance(pdfDocument,pdfFileOutputStream);

//通过PDF页面事件模式添加文字水印功能

pdfWriter.setPageEvent(new TextWaterMarkPdfPageEvent(waterMarkText));

//设置中文字体和字体样式

BaseFont bfChinese = BaseFont.createFont("STSong-Light", "UniGB-UCS2-H", BaseFont.NOT_EMBEDDED);

Font f8 = new Font(bfChinese, 8, Font.NORMAL);

//打开PDF文件流

pdfDocument.open();

//创建一个N列的表格控件

PdfPTable pdfTable = new PdfPTable(normalTableContent[0].length);

//设置表格占PDF文档100%宽度

pdfTable.setWidthPercentage(100);

//水平方向表格控件左对齐

pdfTable.setHorizontalAlignment(PdfPTable.ALIGN_LEFT);

//创建一个表格的表头单元格

PdfPCell pdfTableHeaderCell = new PdfPCell();

//设置表格的表头单元格颜色

pdfTableHeaderCell.setBackgroundColor(new Color(213, 141, 69));

pdfTableHeaderCell.setHorizontalAlignment(PdfPCell.ALIGN_CENTER);

for(String tableHeaderInfo : normalTableContent[0]){

pdfTableHeaderCell.setPhrase(new Paragraph(tableHeaderInfo, f8));

pdfTable.addCell(pdfTableHeaderCell);

}

//创建一个表格的正文内容单元格

PdfPCell pdfTableContentCell = new PdfPCell();

pdfTableContentCell.setHorizontalAlignment(PdfPCell.ALIGN_CENTER);

pdfTableContentCell.setVerticalAlignment(PdfPCell.ALIGN_MIDDLE);

//表格内容行数的填充

for(int i = 0;i < rowsNumber;i++){

for(String tableContentInfo : normalTableContent[1]){

pdfTableContentCell.setPhrase(new Paragraph(tableContentInfo, f8));

pdfTable.addCell(pdfTableContentCell);

}

}

pdfDocument.add(pdfTable);

return true;

}catch(FileNotFoundException de) {

de.printStackTrace();

System.err.println("pdf file: " + de.getMessage());

return false;

}catch(DocumentException de) {

de.printStackTrace();

System.err.println("document: " + de.getMessage());

return false;

}catch(IOException de) {

de.printStackTrace();

System.err.println("pdf font: " + de.getMessage());

return false;

}finally{

//关闭PDF文档流，OutputStream文件输出流也将在PDF文档流关闭方法内部关闭

if(pdfDocument!=null){

pdfDocument.close();

}

}

}

/**

* 创建一份普通表格的PDF文件时同时创建图片水印

* @param fullFilePath

* @return

*/

public boolean createNormalTableWithPictureWaterMark(String fullFilePath,int rowsNumber,String waterMarkFullFilePath){

String[][] normalTableContent = new String[][]{

{"序号","姓名","年龄","职业","籍贯","学历","单位名称","联系电话","联系地址","备注"},

{"1","许果","31","软件工程师","浙江杭州","大学本科","浙江水果大王信息技术有限公司","18905710571","浙江省杭州市西湖区三墩镇三墩街188号","他是一名优秀的IT工程师，日常爱好旅游，运动"}

};

Document pdfDocument = new Document();

try {

//构建一个PDF文档输出流程

OutputStream pdfFileOutputStream = new FileOutputStream(new File(fullFilePath));

PdfWriter pdfWriter = PdfWriter.getInstance(pdfDocument,pdfFileOutputStream);

//通过PDF页面事件模式添加图片水印功能

pdfWriter.setPageEvent(new PictureWaterMarkPdfPageEvent(waterMarkFullFilePath));

//设置中文字体和字体样式

BaseFont bfChinese = BaseFont.createFont("STSong-Light", "UniGB-UCS2-H", BaseFont.NOT_EMBEDDED);

Font f8 = new Font(bfChinese, 8, Font.NORMAL);

//打开PDF文件流

pdfDocument.open();

//创建一个N列的表格控件

PdfPTable pdfTable = new PdfPTable(normalTableContent[0].length);

//设置表格占PDF文档100%宽度

pdfTable.setWidthPercentage(100);

//水平方向表格控件左对齐

pdfTable.setHorizontalAlignment(PdfPTable.ALIGN_LEFT);

//创建一个表格的表头单元格

PdfPCell pdfTableHeaderCell = new PdfPCell();

//设置表格的表头单元格颜色

pdfTableHeaderCell.setBackgroundColor(new Color(213, 141, 69));

pdfTableHeaderCell.setHorizontalAlignment(PdfPCell.ALIGN_CENTER);

for(String tableHeaderInfo : normalTableContent[0]){

pdfTableHeaderCell.setPhrase(new Paragraph(tableHeaderInfo, f8));

pdfTable.addCell(pdfTableHeaderCell);

}

//创建一个表格的正文内容单元格

PdfPCell pdfTableContentCell = new PdfPCell();

pdfTableContentCell.setHorizontalAlignment(PdfPCell.ALIGN_CENTER);

pdfTableContentCell.setVerticalAlignment(PdfPCell.ALIGN_MIDDLE);

//表格内容行数的填充

for(int i = 0;i < rowsNumber;i++){

for(String tableContentInfo : normalTableContent[1]){

pdfTableContentCell.setPhrase(new Paragraph(tableContentInfo, f8));

pdfTable.addCell(pdfTableContentCell);

}

}

pdfDocument.add(pdfTable);

return true;

}catch(FileNotFoundException de) {

de.printStackTrace();

System.err.println("pdf file: " + de.getMessage());

return false;

}catch(DocumentException de) {

de.printStackTrace();

System.err.println("document: " + de.getMessage());

return false;

}catch(IOException de) {

de.printStackTrace();

System.err.println("pdf font: " + de.getMessage());

return false;

}finally{

//关闭PDF文档流，OutputStream文件输出流也将在PDF文档流关闭方法内部关闭

if(pdfDocument!=null){

pdfDocument.close();

}

}

}

/**

* 创建一份普通表格的PDF文件时同时创建图片水印

* @param fullFilePath

* @return

*/

public boolean createNormalTableWithHeadAndFootInfo(String fullFilePath,int rowsNumber){

String[][] normalTableContent = new String[][]{

{"序号","姓名","年龄","职业","籍贯","学历","单位名称","联系电话","联系地址","备注"},

{"1","许果","31","软件工程师","浙江杭州","大学本科","浙江水果大王信息技术有限公司","18905710571","浙江省杭州市西湖区三墩镇三墩街188号","他是一名优秀的IT工程师，日常爱好旅游，运动"}

};

Document pdfDocument = new Document();

try {

//构建一个PDF文档输出流程

OutputStream pdfFileOutputStream = new FileOutputStream(new File(fullFilePath));

PdfWriter pdfWriter = PdfWriter.getInstance(pdfDocument,pdfFileOutputStream);

//通过PDF页面事件模式添加页头和页脚信息功能

pdfWriter.setPageEvent(new HeadFootInfoPdfPageEvent());

//设置中文字体和字体样式

BaseFont bfChinese = BaseFont.createFont("STSong-Light", "UniGB-UCS2-H", BaseFont.NOT_EMBEDDED);

Font f8 = new Font(bfChinese, 8, Font.NORMAL);

//打开PDF文件流

pdfDocument.open();

//创建一个N列的表格控件

PdfPTable pdfTable = new PdfPTable(normalTableContent[0].length);

//设置表格占PDF文档100%宽度

pdfTable.setWidthPercentage(100);

//水平方向表格控件左对齐

pdfTable.setHorizontalAlignment(PdfPTable.ALIGN_LEFT);

//创建一个表格的表头单元格

PdfPCell pdfTableHeaderCell = new PdfPCell();

//设置表格的表头单元格颜色

pdfTableHeaderCell.setBackgroundColor(new Color(213, 141, 69));

pdfTableHeaderCell.setHorizontalAlignment(PdfPCell.ALIGN_CENTER);

for(String tableHeaderInfo : normalTableContent[0]){

pdfTableHeaderCell.setPhrase(new Paragraph(tableHeaderInfo, f8));

pdfTable.addCell(pdfTableHeaderCell);

}

//创建一个表格的正文内容单元格

PdfPCell pdfTableContentCell = new PdfPCell();

pdfTableContentCell.setHorizontalAlignment(PdfPCell.ALIGN_CENTER);

pdfTableContentCell.setVerticalAlignment(PdfPCell.ALIGN_MIDDLE);

//表格内容行数的填充

for(int i = 0;i < rowsNumber;i++){

for(String tableContentInfo : normalTableContent[1]){

pdfTableContentCell.setPhrase(new Paragraph(tableContentInfo, f8));

pdfTable.addCell(pdfTableContentCell);

}

}

pdfDocument.add(pdfTable);

return true;

}catch(FileNotFoundException de) {

de.printStackTrace();

System.err.println("pdf file: " + de.getMessage());

return false;

}catch(DocumentException de) {

de.printStackTrace();

System.err.println("document: " + de.getMessage());

return false;

}catch(IOException de) {

de.printStackTrace();

System.err.println("pdf font: " + de.getMessage());

return false;

}finally{

//关闭PDF文档流，OutputStream文件输出流也将在PDF文档流关闭方法内部关闭

if(pdfDocument!=null){

pdfDocument.close();

}

}

}

/**

* @param args

*/

public static void main(String[] args) {

PDFCreate2Table pdfCreate2Table = new PDFCreate2Table();

String sourcePDFFile = "D:/temp/pdftest/31需要增加水印的原文档.pdf";

boolean result1 = pdfCreate2Table.createNormalTable(sourcePDFFile, 500);

PDFCreate2WaterMark pdfWaterMark = new PDFCreate2WaterMark();

String waterMarkFullFilePath = "D:/temp/pdftest/login_logo.gif";//水印图片

if(result1){

pdfWaterMark.addPictureWaterMark(sourcePDFFile,"D:/temp/pdftest/32增加图片水印大文档.pdf",waterMarkFullFilePath);

pdfWaterMark.addSingletonPictureWaterMark(sourcePDFFile,"D:/temp/pdftest/33增加图片水印小文档.pdf",waterMarkFullFilePath);

pdfWaterMark.addTextWaterMark(sourcePDFFile,"D:/temp/pdftest/34增加文字水印文档.pdf","杭州水果大王信息技术");

}

pdfWaterMark.createNormalTableWithTextWaterMark("D:/temp/pdftest/35文档生成时同时生成文字水印.pdf",1500,"杭州水果大王信息技术");

pdfWaterMark.createNormalTableWithPictureWaterMark("D:/temp/pdftest/36文档生成时同时生成图片水印.pdf",1500,waterMarkFullFilePath);

pdfWaterMark.createNormalTableWithHeadAndFootInfo("D:/temp/pdftest/37文档生成时同时生成页头和页脚信息.pdf",1500);

}

/**

* 为PDF分页时创建添加文本水印的事件信息

*/

class TextWaterMarkPdfPageEvent extends PdfPageEventHelper{

private String waterMarkText;

public TextWaterMarkPdfPageEvent(String waterMarkText){

this.waterMarkText = waterMarkText;

}

public void onEndPage(PdfWriter writer, Document document) {

try{

float pageWidth = document.right()+document.left();//获取pdf内容正文页面宽度

float pageHeight = document.top()+document.bottom();//获取pdf内容正文页面高度

//设置水印字体格式

BaseFont base = BaseFont.createFont("STSong-Light", "UniGB-UCS2-H",BaseFont.NOT_EMBEDDED);

Font waterMarkFont = new Font(base, 20, Font.BOLD, Color.CYAN);

PdfContentByte waterMarkPdfContent = writer.getDirectContentUnder();

Phrase phrase = new Phrase(waterMarkText, waterMarkFont);

ColumnText.showTextAligned(waterMarkPdfContent,Element.ALIGN_CENTER,phrase,

pageWidth*0.25f,pageHeight*0.2f,45);

ColumnText.showTextAligned(waterMarkPdfContent,Element.ALIGN_CENTER,phrase,

pageWidth*0.25f,pageHeight*0.5f,45);

ColumnText.showTextAligned(waterMarkPdfContent,Element.ALIGN_CENTER,phrase,

pageWidth*0.25f,pageHeight*0.8f,45);

ColumnText.showTextAligned(waterMarkPdfContent,Element.ALIGN_CENTER,phrase,

pageWidth*0.65f,pageHeight*0.2f,45);

ColumnText.showTextAligned(waterMarkPdfContent,Element.ALIGN_CENTER,phrase,

pageWidth*0.65f,pageHeight*0.5f,45);

ColumnText.showTextAligned(waterMarkPdfContent,Element.ALIGN_CENTER,phrase,

pageWidth*0.65f,pageHeight*0.8f,45);

}catch(DocumentException de) {

de.printStackTrace();

System.err.println("pdf watermark font: " + de.getMessage());

}catch(IOException de) {

de.printStackTrace();

System.err.println("pdf watermark font: " + de.getMessage());

}

}

}

/**

* 为PDF分页时创建添加图片水印的事件信息

*/

class PictureWaterMarkPdfPageEvent extends PdfPageEventHelper{

private String waterMarkFullFilePath;

private Image waterMarkImage;

public PictureWaterMarkPdfPageEvent(String waterMarkFullFilePath){

this.waterMarkFullFilePath = waterMarkFullFilePath;

}

public void onEndPage(PdfWriter writer, Document document) {

try{

float pageWidth = document.right()+document.left();//获取pdf内容正文页面宽度

float pageHeight = document.top()+document.bottom();//获取pdf内容正文页面高度

PdfContentByte waterMarkPdfContent = writer.getDirectContentUnder();

//仅设置一个图片实例对象，整个PDF文档只应用一个图片对象，极大减少因为增加图片水印导致PDF文档大小增加

if(waterMarkImage == null){

waterMarkImage = Image.getInstance(waterMarkFullFilePath);

}

//添加水印图片，文档正文内容采用横向三列，竖向两列模式增加图片水印

waterMarkPdfContent.addImage(getSingletonWaterMarkImage(waterMarkImage,pageWidth*0.2f,pageHeight*0.1f));

waterMarkPdfContent.addImage(getSingletonWaterMarkImage(waterMarkImage,pageWidth*0.2f,pageHeight*0.4f));

waterMarkPdfContent.addImage(getSingletonWaterMarkImage(waterMarkImage,pageWidth*0.2f,pageHeight*0.7f));

waterMarkPdfContent.addImage(getSingletonWaterMarkImage(waterMarkImage,pageWidth*0.6f,pageHeight*0.1f));

waterMarkPdfContent.addImage(getSingletonWaterMarkImage(waterMarkImage,pageWidth*0.6f,pageHeight*0.4f));

waterMarkPdfContent.addImage(getSingletonWaterMarkImage(waterMarkImage,pageWidth*0.6f,pageHeight*0.7f));

PdfGState gs = new PdfGState();

gs.setFillOpacity(0.2f);//设置透明度为0.2

waterMarkPdfContent.setGState(gs);

}catch(DocumentException de) {

de.printStackTrace();

System.err.println("pdf watermark font: " + de.getMessage());

}catch(IOException de) {

de.printStackTrace();

System.err.println("pdf watermark font: " + de.getMessage());

}

}

}

/**

* 为PDF分页时创建添加header和footer信息的事件信息

*/

class HeadFootInfoPdfPageEvent extends PdfPageEventHelper{

public HeadFootInfoPdfPageEvent(){

}

public void onEndPage(PdfWriter writer, Document document) {

try{

PdfContentByte headAndFootPdfContent = writer.getDirectContent();

headAndFootPdfContent.saveState();

headAndFootPdfContent.beginText();

BaseFont bfChinese = BaseFont.createFont("STSong-Light", "UniGB-UCS2-H", BaseFont.NOT_EMBEDDED);

headAndFootPdfContent.setFontAndSize(bfChinese, 10);

//文档页头信息设置

float x = document.top(-20);

//页头信息左面

headAndFootPdfContent.showTextAligned(PdfContentByte.ALIGN_LEFT,

"数据安全产品",

document.left(), x, 0);

//页头信息中间

headAndFootPdfContent.showTextAligned(PdfContentByte.ALIGN_CENTER,

"第"+writer.getPageNumber()+ "页",

(document.right() + document.left())/2,

x, 0);

//页头信息右面

headAndFootPdfContent.showTextAligned(PdfContentByte.ALIGN_RIGHT,

"杭州水果大王信息技术有限公司",

document.right(), x, 0);

//文档页脚信息设置

float y = document.bottom(-20);

//页脚信息左面

headAndFootPdfContent.showTextAligned(PdfContentByte.ALIGN_LEFT,

"--",

document.left(), y, 0);

//页脚信息中间

headAndFootPdfContent.showTextAligned(PdfContentByte.ALIGN_CENTER,

"-",

(document.right() + document.left())/2,

y, 0);

//页脚信息右面

headAndFootPdfContent.showTextAligned(PdfContentByte.ALIGN_RIGHT,

"--",

document.right(), y, 0);

headAndFootPdfContent.endText();

headAndFootPdfContent.restoreState();

}catch(DocumentException de) {

de.printStackTrace();

System.err.println("pdf watermark font: " + de.getMessage());

}catch(IOException de) {

de.printStackTrace();

System.err.println("pdf watermark font: " + de.getMessage());

}

}

}

}