itext 生成pdf文档

package com.tool.itext;



import java.io.FileOutputStream;



import com.itextpdf.text.BaseColor;

import com.itextpdf.text.Document;

import com.itextpdf.text.Element;

import com.itextpdf.text.Font;

import com.itextpdf.text.Image;

import com.itextpdf.text.PageSize;

import com.itextpdf.text.Paragraph;

import com.itextpdf.text.pdf.BaseFont;

import com.itextpdf.text.pdf.PdfContentByte;

import com.itextpdf.text.pdf.PdfPTable;

import com.itextpdf.text.pdf.PdfReader;

import com.itextpdf.text.pdf.PdfStamper;

import com.itextpdf.text.pdf.PdfWriter;



public class PdfUtil {

// 表头

public static final String[] tableHeader = { "出借人(id)", "借款金额", "借款期限",

"年利率", "借款开始日", "借款到期日", "截止还款日", "还款本息" };



// 数据表字段数

private static final int colNumber = 8;



// 表格的设置

private static final int spacing = 1;



// 表格的设置

private static final int padding = 1;



public static void main(String[] args) {

// 创建文Pdf文挡50, 50, 50,50左右上下距离

Document document = new Document(PageSize.A4);

try {

// 使用PDFWriter进行写文件操作

PdfWriter.getInstance(document,

new FileOutputStream("d:\\学生信息.pdf"));

document.open();

// 中文字体

BaseFont bfChinese = BaseFont.createFont("STSong-Light",

"UniGB-UCS2-H", BaseFont.NOT_EMBEDDED);

Font fontChinese = new Font(bfChinese, 12, Font.BOLD);

// 创建有colNumber(8)列的表格

PdfPTable datatable = new PdfPTable(colNumber);

// 定义表格的宽度

int[] cellsWidth = { 5, 4, 4, 4, 5, 5, 5, 5 };

datatable.setWidths(cellsWidth);

// 表格的宽度百分比

datatable.setWidthPercentage(100);

datatable.getDefaultCell().setPadding(padding);

datatable.getDefaultCell().setBorderWidth(spacing);

// 设置表格的底色

datatable.getDefaultCell().setBackgroundColor(BaseColor.WHITE);

datatable.getDefaultCell().setHorizontalAlignment(

Element.ALIGN_CENTER);

// 添加表头元素

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

datatable.addCell(new Paragraph(tableHeader[i], fontChinese));

}

// 添加子元素

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

datatable.addCell(new Paragraph(tableHeader[i], fontChinese));

}

Paragraph pf = new Paragraph("借款协议", fontChinese);

pf.setAlignment(Element.ALIGN_CENTER);

pf.setSpacingAfter(10f);

document.add(pf);

pf = new Paragraph(

"借款协议号：389 借款人：lianhuan515 出借人：详见本协议第一条\n签订日期：2013-05-20 \n借款人通过成如下协议： \n第一条：详情如下表所示： ",

fontChinese);

pf.setSpacingAfter(20f);

document.add(pf);

document.add(datatable);

pf = new Paragraph(

"第二条：还款 \n", fontChinese);

document.add(pf);

document.close();

PdfReader reader = new PdfReader("d:\\学生信息.pdf", "PassWord".getBytes());// 选择需要印章的pdf

PdfStamper stamp = new PdfStamper(reader, new FileOutputStream(

"d:\\学生信息1.pdf"));// 加完印章后的pdf

PdfContentByte over = stamp.getOverContent(1);// 设置在第几页打印印章

Image image = Image

.getInstance("D:\\workspace\\old\\WebContent\\images\\zhang.jpg");// 选择透明图片

image.setAlignment(1);

image.scaleAbsolute(220, 220);// 控制图片大小

image.setAbsolutePosition(200, 500);// 控制图片位置

over.addImage(image);

stamp.close();

} catch (Exception e) {

e.printStackTrace();

}





}

}

[html] view
plaincopy





@RequestMapping(value = "/fileDownload/pdf/{id}.do", method = RequestMethod.GET)

public void pdfDownload(HttpServletRequest request,

HttpServletResponse response, @PathVariable Long id) {

/** 获得输出流 **/

OutputStream outputStream = null;

InputStream in = null;

try {

/** 文件名，可以从数据库中取 **/

String fileName = id + ".pdf";



/** 获得输入流 **/

in = new BufferedInputStream(request

.getSession()

.getServletContext()

.getResourceAsStream(

Constants.FILEPATH + File.separator + fileName));



/** 存放文件的字节数组，available()返回字节数 **/

byte[] buffer = new byte[in.available()];



/** 从流中将文件读取到字节数组中 **/

in.read(buffer);



/** 转换编码 **/

fileName = URLEncoder.encode(fileName, "UTF-8");



/** 重置response **/

response.reset();



/** 设置HTML头部信息 **/

response.setHeader("Content-Disposition", "attachment; filename=\""

+ fileName + "\"");

response.addHeader("Content-Length", "" + buffer.length);

response.setContentType("application/octet-stream;charset=UTF-8");



outputStream = new BufferedOutputStream(response.getOutputStream());



/** 从字节数组中将文件写到输出流中 **/

outputStream.write(buffer);



/** 清空输出流 **/

outputStream.flush();



/*** 关闭输入流 */



} catch (IOException e) {

// TODO Auto-generated catch block

e.printStackTrace();

} finally {

try {

in.close();

outputStream.close();

} catch (IOException e) {

// TODO Auto-generated catch block

e.printStackTrace();

}



}

}