pdf转图片

<dependency>
<groupId>org.apache.pdfbox</groupId>
<artifactId>pdfbox</artifactId>
<version>2.0.1</version>
</dependency>
<dependency>
<groupId>org.apache.pdfbox</groupId>
<artifactId>pdfbox-tools</artifactId>
<version>2.0.1</version>
</dependency>

public static void pdfToImages() throws IOException {
PDDocument pdf = null;
try {
pdf = PDDocument.load(new File("F:\\1.pdf"));
PDFRenderer pdfRenderer = new PDFRenderer(pdf);
PDPageTree pageTree = pdf.getPages();
int pageCounter = 0;
for(PDPage page : pageTree){
float scale=2f;//the scaling factor, where 1 = 72 DPI
BufferedImage bim = pdfRenderer.renderImage(pageCounter,f,ImageType.RGB);
ImageIOUtil.writeImage(bim, "F:\\imgs\\"+(pageCounter++) + ".jpg",144);//最后一个参数144没有什么意义
}

} catch (IOException e) {
e.printStackTrace();
}
}