Itext PDF生成 加水印图片文字
- - CSDN博客研发管理推荐文章由于项目中用到,所以网上找了很多,但或多或少有些问题,我整理更新了一下. import java.io.*;
import com.itextpdf.text.*;
import com.itextpdf.text.pdf.*;
/**
* PDF生成
*/
public class PDFBuild {.
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); } }