Java pdfbox 给 PDF 添加文字和图片水印 并旋转45度

POMdependency groupIdorg.apache.pdfbox/groupId artifactIdpdfbox/artifactId version2.0.27/version /dependency代码import org.apache.pdfbox.pdmodel.PDDocument; import org.apache.pdfbox.pdmodel.PDPage; import org.apache.pdfbox.pdmodel.PDPageContentStream; import org.apache.pdfbox.pdmodel.font.PDFont; import org.apache.pdfbox.pdmodel.font.PDType0Font; import org.apache.pdfbox.pdmodel.graphics.image.PDImageXObject; import org.apache.pdfbox.pdmodel.graphics.state.PDExtendedGraphicsState; import org.apache.pdfbox.util.Matrix; import java.awt.*; import java.io.File; public class Test1 { public static void main(String[] args) { // 原始文件路径 String sourcePath D:\\poi\\11.pdf; // 去c://windows/font下赋值去 String fontFilePath D:\\poi\\simhei.ttf; String waterMarkText 水印文字; // log图片的位置 String logoFilePath D:\\poi\\logo.jpeg; // 输出的PDF文件路径 String pdfFile D:\\poi\\11-new System.currentTimeMillis() .pdf; addWaterRemark(sourcePath, pdfFile, fontFilePath, waterMarkText, logoFilePath); } public static void addWaterRemark(String sourcePath, String pdfFile, String fontFilePath, String waterMarkText, String logoFilePath) { try { // 读取原始 PDF 文件 PDDocument doc PDDocument.load(new File(sourcePath)); doc.setAllSecurityToBeRemoved(true); //必须是ttf字体 PDFont font PDType0Font.load(doc, new File(fontFilePath)); PDImageXObject logoImage PDImageXObject.createFromFile(logoFilePath, doc); float logoImageWidth logoImage.getWidth(); float logoImageHeight logoImage.getHeight(); float maxX; float maxY; float tempX; float tempY; float xStepLength 300f; float yStepLength 200f; float startX 100f; float startY 100f; PDPageContentStream cs; // 透明度 PDExtendedGraphicsState r0 new PDExtendedGraphicsState(); r0.setNonStrokingAlphaConstant(0.2f); r0.setAlphaSourceFlag(true); for (PDPage page : doc.getPages()) { maxX page.getBBox().getUpperRightX(); maxY page.getBBox().getUpperRightX(); cs new PDPageContentStream(doc, page, PDPageContentStream.AppendMode.APPEND, true, true); cs.setGraphicsStateParameters(r0); cs.setNonStrokingColor(new Color(200, 200, 200)); cs.setFont(font, 36f); // 添加图片不能在beginText和endText之间加 cs.drawImage(logoImage, (maxX - logoImageWidth) / 2, maxY / 2, logoImageWidth * 1.5f, logoImageHeight * 1.5f); cs.beginText(); tempX startX; while (tempX maxX) { tempY startY; while (tempY maxY) { cs.setTextMatrix(Matrix.getRotateInstance(45, tempX, tempY)); cs.showText(waterMarkText); tempY yStepLength; } tempX xStepLength; } cs.endText(); // 关闭流 cs.close(); } // 保存修改后的 PDF 文件 doc.save(new File(pdfFile)); doc.close(); } catch (Exception e) { e.printStackTrace(); } } }