itext对水印图片的旋转、放大、缩小等操作的示例 - 无、为
package test1;
import java.awt.Color;
import java.io.BufferedReader;
import java.io.File;
import java.io.FileOutputStream;
import java.io.FileReader;
import java.io.IOException;
import com.lowagie.text.Document;
import com.lowagie.text.DocumentException;
import com.lowagie.text.Font;
import com.lowagie.text.HeaderFooter;
import com.lowagie.text.Image;
import com.lowagie.text.PageSize;
import com.lowagie.text.Paragraph;
import com.lowagie.text.Phrase;
import com.lowagie.text.Rectangle;
import com.lowagie.text.pdf.BaseFont;
import com.lowagie.text.pdf.PdfContentByte;
import com.lowagie.text.pdf.PdfGState;
import com.lowagie.text.pdf.PdfReader;
import com.lowagie.text.pdf.PdfStamper;
import com.lowagie.text.pdf.PdfWriter;
public class PdfConvertor {
txt原始文件的路径
private
static final String txtFilePath = “c:/test/01.txt”;
//
生成的pdf文件路径
private
static final String pdfFilePath = “c:/test/01.pdf”;
//
添加水印图片路径
private
static final String imageFilePath =
“c:/test/images/psue.jpg”;
//
生成临时文件前缀
private
static final String prefix = “tempFile”;
//
所有者密码
private
static final String OWNERPASSWORD = “123456”;
public
static void generatePDFWithTxt(String txtFile, String
pdfFile,
String userPassWord, String waterMarkName, int
permission) {
try {
// 生成临时文件
File file = File.createTempFile(prefix,
“.pdf”);
// 创建pdf文件到临时文件
if (createPDFFile(txtFile, file)) {
// 增加水印和加密
waterMark(file.getPath(), pdfFile, userPassWord,
OWNERPASSWORD,
waterMarkName, permission);
}
} catch (Exception e) {
e.printStackTrace();
}
}
private
static boolean createPDFFile(String txtFilePath, File file) {
// 设置纸张
Rectangle rect = new
Rectangle(PageSize.A4);
// 设置页码
HeaderFooter footer = new HeaderFooter(new
Phrase(“页码:”, PdfConvertor
.setChineseFont()), true);
footer.setBorder(Rectangle.NO_BORDER);
// step1
Document doc = new Document(rect, 50, 50, 50,
50);
doc.setFooter(footer);
try {
FileReader fileRead = new
FileReader(txtFilePath);
BufferedReader read = new
BufferedReader(fileRead);
// 设置pdf文件生成路径 step2
PdfWriter.getInstance(doc, new
FileOutputStream(file));
// 打开pdf文件 step3
doc.open();
// 实例化Paragraph 获取写入pdf文件的内容，调用支持中文的方法.
step4
while (read.ready()) {
// 添加内容到pdf(这里将会按照txt文件的原始样式输出)
doc.add(new Paragraph(read.readLine(),
PdfConvertor
.setChineseFont()));
}
// 关闭pdf文件 step5
doc.close();
return true;
} catch (Exception e) {
e.printStackTrace();
return false;
}
}
private
static void waterMark(String inputFile, String outputFile,
String userPassWord, String ownerPassWord, String
waterMarkName,
int permission) {
try {
PdfReader reader = new
PdfReader(inputFile);
PdfStamper stamper = new PdfStamper(reader, new
FileOutputStream(
outputFile));
// 设置密码
//stamper.setEncryption(userPassWord.getBytes(),
ownerPassWord.getBytes(), permission, false);
BaseFont base =
BaseFont.createFont(“STSong-Light”, “UniGB-UCS2-H”,
BaseFont.NOT_EMBEDDED);
int total = reader.getNumberOfPages() + 1;
Image image =
Image.getInstance(imageFilePath);
image.setAbsolutePosition(50, 400);//坐标
image.setRotation(-20);//旋转 弧度
image.setRotationDegrees(-45);//旋转 角度
//
image.scaleAbsolute(200,100);//自定义大小
image.scalePercent(50);//依照比例缩放
PdfContentByte under;
int j = waterMarkName.length();
char c = 0;
int rise = 0;
for (int i = 1; i < total; i++)
{
rise = 500;
under = stamper.getUnderContent(i);
// 添加图片
under.addImage(image);
PdfGState gs = new PdfGState();
gs.setFillOpacity(0.2f);// 设置透明度为0.2
under.setGState(gs);
under.beginText();
under.setColorFill(Color.CYAN);
under.setFontAndSize(base, 30);
// 设置水印文字字体倾斜 开始
if (j >= 15) {
under.setTextMatrix(200, 120);
for (int k = 0; k < j; k++)
{
under.setTextRise(rise);
c = waterMarkName.charAt(k);
under.showText(c + “”);
rise -= 20;
}
} else {
under.setTextMatrix(180, 100);
for (int k = 0; k < j; k++)
{
under.setTextRise(rise);
c = waterMarkName.charAt(k);
under.showText(c + “”);
rise -= 18;
}
}
// 字体设置结束
under.endText();
// 画一个圆
// under.ellipse(250, 450, 350, 550);
// under.setLineWidth(1f);
// under.stroke();
}
stamper.close();
} catch (Exception e) {
e.printStackTrace();
}
}
private
static Font setChineseFont() {
BaseFont base = null;
Font fontChinese = null;
try {
base = BaseFont.createFont(“STSong-Light”,
“UniGB-UCS2-H”,
BaseFont.EMBEDDED);
fontChinese = new Font(base, 12,
Font.NORMAL);
} catch (DocumentException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
return fontChinese;
}
public
static void main(String[] args) {
generatePDFWithTxt(txtFilePath, pdfFilePath,
“123”, “”, 16);
}
}