pdf 转图片代码保存记录

参考：https://blog.csdn.net/emoven/article/details/52954898

需要使用的jar（maven）

     <dependency>
            <groupId>org.icepdf.os</groupId>
            <artifactId>icepdf-core</artifactId>
            <version>6.2.2</version>
        </dependency>

        <dependency>
            <groupId>org.icepdf.os</groupId>
            <artifactId>icepdf-viewer</artifactId>
            <version>6.2.2</version>
        </dependency>

package com.smile.javafx.pdf;

import org.icepdf.core.exceptions.PDFException;
import org.icepdf.core.exceptions.PDFSecurityException;
import org.icepdf.core.pobjects.Document;
import org.icepdf.core.util.GraphicsRenderingHints;

import javax.imageio.ImageIO;
import java.awt.image.BufferedImage;
import java.awt.image.RenderedImage;
import java.io.File;
import java.io.IOException;

public class PdfToImage {


    private File pdf_file;

    public static void pdf2Pic(String pdfPath, String path) throws IOException, PDFException, PDFSecurityException, InterruptedException {
        Document document = new Document();
        document.setFile(pdfPath);
        float scale = 2.5f;//缩放比例
        float rotation = 0f;//旋转角度

        for (int i = 0; i < document.getNumberOfPages(); i++) {
            BufferedImage image = (BufferedImage) document.getPageImage(i, GraphicsRenderingHints.SCREEN, org.icepdf.core.pobjects.Page.BOUNDARY_CROPBOX, rotation, scale);
            RenderedImage rendImage = image;
            try {
                String imgName = i + ".png";
                System.out.println(imgName);
                File file = new File(path + imgName);
                if (!file.getParentFile().exists()) {
                    file.getParentFile().mkdirs();
                }
                ImageIO.write(rendImage, "png", file);
            } catch (IOException e) {
                e.printStackTrace();
            }
            image.flush();
        }
        document.dispose();
    }


    public static void main(String[] args) {
        String pdf_path = "C:\\Users\\zxr\\Desktop\\2.pdf";
        try {
            pdf2Pic(pdf_path, "C:\\Users\\zxr\\Desktop\\pdf\\img");
        } catch (IOException e) {
            e.printStackTrace();
        } catch (PDFException e) {
            e.printStackTrace();
        } catch (PDFSecurityException e) {
            e.printStackTrace();
        } catch (InterruptedException e) {
            e.printStackTrace();
        }
    }

}