添加pdfbox <dependency> <groupId>org.apache.pdfbox</groupId> <artifactId>pdfbox</artifactId> <version>3.0.5</version> </dependency> <dependency> <groupId>org.apache.pdfbox</groupId> <artifactId>fontbox</artifactId> <version>3.0.5</version> </dependency> 使用pdfbox将文字pdf转换为图片pdf String inputPath = "input.pdf"; // 输入 PDF String outputPath = "output_image_pdf.pdf"; // 输出图片 PDF float dpi = 300; // 渲染分辨率 try (PDDocument