java itext 生成pdf文档
需要的jar包：itextpdf-5.4.4.jar，下载见附件
代码如下：
package com.itext.pdf.Test;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.net.MalformedURLException;
import java.text.SimpleDateFormat;
import java.util.Date;
import javax.imageio.stream.FileImageInputStream;
import com.itextpdf.text.Document;
import com.itextpdf.text.DocumentException;
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.Phrase;
import com.itextpdf.text.Rectangle;
import com.itextpdf.text.pdf.BaseFont;
import com.itextpdf.text.pdf.PdfPCell;
import com.itextpdf.text.pdf.PdfPTable;
import com.itextpdf.text.pdf.PdfWriter;
public class MyPDF {
/**
* @param args
*/
public static void main(String[] args) {
// TODO Auto-generated method stub
//1、创建一个document对象
Rectangle rect = new Rectangle(PageSize.A4);//设置页面大小为A4纸大小
rect = rect.rotate();//页面横向显示
Document document = new Document(rect);
document.setMargins(50, 50, 50, 50);//设置页边距
try {
//2、创建一个Writer实例
File file = new File("D:\\pdf\\ITextTest.pdf");
if(file.exists()){
file.delete();
}
FileOutputStream fos = new FileOutputStream(file);
PdfWriter.getInstance(document, fos);
//3、打开文档
document.open();
//4、为文档添加内容
document.add(new Paragraph("一、第一章",getChineseFont()));
document.add(new Paragraph("您刚才看到了如何将纯文本添加到 PDF 文档中。接下来，我们需要向文档中添加一些复杂的元素。首先创建一个新章",getChineseFont()));
/*================================第二页========================================*/
document.newPage();//添加新的页
document.add(new Paragraph("二、第二章",getChineseFont()));
document.add(new Paragraph("添加表格",getChineseFont()));
float[] width = {200f,70f,70f,70f,70f,70f,70f,70f,70f,70f,70f,70f,70f,70f,70f,70f,70f,70f,70f,70f,70f,70f,70f,70f,70f};
PdfPTable table = new PdfPTable(width);
table.setSpacingBefore(25);
table.setSpacingAfter(25);
table.setHorizontalAlignment(0);//水平左对齐
table.setWidthPercentage(100f);//设置百分比
for(int row=0;row<10;row++){
for(int i=0;i<=24;i++){
if(row==0){
if(i==0){
PdfPCell cell = new PdfPCell(new Phrase("日期",getChineseFont()));
cell.setNoWrap(true);//设置是否换行
cell.setFixedHeight(22);//设置固定行高
cell.setVerticalAlignment(Element.ALIGN_MIDDLE);//垂直方向居中对齐
cell.setHorizontalAlignment(Element.ALIGN_CENTER);//水平方向居中对齐
table.addCell(cell);
}else{
PdfPCell cell = new PdfPCell(new Phrase(i+"点",getChineseFont()));
cell.setNoWrap(true);
cell.setVerticalAlignment(Element.ALIGN_MIDDLE);//垂直方向居中对齐
cell.setHorizontalAlignment(Element.ALIGN_CENTER);//水平方向居中对齐
table.addCell(cell);
}
}else{
if(i==0){
PdfPCell cell = new PdfPCell(new Phrase(new SimpleDateFormat("yyyy-MM-dd").format(new Date())));
cell.setNoWrap(true);
cell.setFixedHeight(18);//设置固定行高
cell.setVerticalAlignment(Element.ALIGN_MIDDLE);//垂直方向居中对齐
cell.setHorizontalAlignment(Element.ALIGN_CENTER);//水平方向居中对齐
table.addCell(cell);
}else{
int a=(int) Math.random()*40;
PdfPCell cell = new PdfPCell(new Phrase(""+a));
cell.setNoWrap(false);
cell.setFixedHeight(18);//设置固定行高
cell.setVerticalAlignment(Element.ALIGN_MIDDLE);//垂直方向居中对齐
cell.setHorizontalAlignment(Element.ALIGN_CENTER);//水平方向居中对齐
table.addCell(cell);
}
}
}
}
document.add(table);
/*================================第三页========================================*/
document.newPage();//添加新的页
document.add(new Paragraph("三、第三章",getChineseFont()));
File imageFile = new File("D:\\pdf\\a.jpg");
byte[] b = setImageToByteArray(imageFile);
Image image = Image.getInstance(b);
image.setSpacingBefore(25);
image.setSpacingAfter(25);
document.add(image);
/*================================第四页========================================*/
document.newPage();//添加新的页
document.add(new Paragraph("四、第四章",getChineseFont()));
float[] width2 = {100f};
PdfPTable table2 = new PdfPTable(width2);
table2.setSpacingBefore(25);
table2.setSpacingAfter(25);
PdfPCell cell = new PdfPCell(new Phrase("在示例代码0609中，我们添加一个从一个Jpeg文件中读入到字节数组中的图片，很明显，使用其他getInstance方法得到实例更优越，但这仅仅是一个例子，该getInstance方法在动态创建那些根本不存在的图片时非常有用。"
,getChineseFont()));
cell.setPadding(10f);
table2.addCell(cell);
document.add(table2);
//5、关闭文档
document.close();
} catch (FileNotFoundException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (DocumentException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (MalformedURLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
//转换中文
public static Font getChineseFont(){
Font fontChinese = null;
try {
BaseFont bf = BaseFont.createFont("STSong-Light","UniGB-UCS2-H",BaseFont.NOT_EMBEDDED);
fontChinese = new Font(bf,12,Font.NORMAL);
} catch (DocumentException e) {
System.err.println(e.getMessage());
} catch (IOException e) {
System.err.println(e.getMessage());
}
return fontChinese;
}
//将图片文件转换成二进制流
public static byte[] setImageToByteArray(File filename){
byte[] image = null;
try {
FileImageInputStream fis;
fis = new FileImageInputStream(filename);
int streamLength = (int) fis.length();
image = new byte[streamLength];
fis.read(image,0,streamLength);
fis.close();
} catch (FileNotFoundException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return image;
}
}
输出结果如下:
