文章目录

一.项目中导入pdfbox依赖

pom文件中添加：

<!-- /artifact/org.apache.pdfbox/pdfbox --><dependency><groupId>org.apache.pdfbox</groupId><artifactId>pdfbox</artifactId><version>2.0.25</version></dependency><dependency><groupId>org.apache.pdfbox</groupId><artifactId>jbig2-imageio</artifactId><version>3.0.2</version></dependency>

二.编写代码

public static void imageToPdf(File imageFile, File outFile) throws IOException {BufferedImage image = ImageIO.read(imageFile);PDDocument outDocument = new PDDocument();PDImageXObject imageXObject = LosslessFactory.createFromImage(outDocument, image);PDPage pdPage = new PDPage(PDRectangle.A4);outDocument.addPage(pdPage);PDPageContentStream pageContentStream = new PDPageContentStream(outDocument, pdPage);float height = pdPage.getMediaBox().getHeight();//要将图片在pdf中绘制多高，这里宽度直接使用了pdfpage的宽度，即横向铺满，这里的height也是使用了pdfpage的高度。因此最终结果是铺满整个pdf页。float y = pdPage.getMediaBox().getHeight() - height;//这里比较奇葩的是这个坐标是以左下角为原点坐标的。pageContentStream.drawImage(imageXObject, 0, y, pdPage.getMediaBox().getWidth(), height);pageContentStream.close();if (!outFile.getParentFile().exists()) {outFile.getParentFile().mkdirs();}outDocument.save(outFile);outDocument.close();}