pdf转图片工具类-蒲公英云

pdf转图片工具类

导包：

<dependency>
            <groupId>com.lowagie</groupId>
            <artifactId>itext</artifactId>
            <version>2.0.6</version>
        </dependency>
        <dependency>
            <groupId>org.apache.pdfbox</groupId>
            <artifactId>pdfbox</artifactId>
            <version>2.0.1</version>
        </dependency>

代码实现：

import java.awt.image.BufferedImage;
import java.io.File;
import java.io.IOException;
import java.util.Date;
import javax.imageio.ImageIO;
import org.apache.pdfbox.pdmodel.PDDocument;
import org.apache.pdfbox.rendering.PDFRenderer;
import com.edi.framework.admin.ConfigPropertiesUtils;
import com.lowagie.text.pdf.PdfReader;
public class Pdf2ImageUtil {
    public static void main(String[] args) {
        String pdf2Image = pdf2Image("D:/12.pdf",100);
        System.out.println(pdf2Image);
    }
    /***
     * PDF文件转PNG图片，全部页数
     * 
     * @param PdfFilePath pdf完整路径
     * @param dstImgFolder 图片存放的文件夹
     * @param dpi dpi越大转换后越清晰，相对转换速度越慢
     * @return
     */
    public static String pdf2Image(String PdfFilePath, int dpi) {
        String basepath =  "位置"
        File file = new File(PdfFilePath);
        PDDocument pdDocument;
        try {
            String imgPDFPath = file.getParent();
            //图片存放文件夹
            String dstImgFolder = basepath + File.separator + "peopleSignFile"+ File.separator + "jpg"+ File.separator + DateUtils.formatDate.format(new Date()) ;
            int dot = file.getName().lastIndexOf('.');
            String imagePDFName = file.getName().substring(0, dot); // 获取图片文件名
            String imgFolderPath = null;
            if (dstImgFolder.equals("")) {
                imgFolderPath = imgPDFPath;// 获取图片存放的文件夹路径
            } else {
                imgFolderPath = dstImgFolder;
            }
            if (createDirectory(imgFolderPath)) {
                pdDocument = PDDocument.load(file);
                PDFRenderer renderer = new PDFRenderer(pdDocument);
                /* dpi越大转换后越清晰，相对转换速度越慢 */
                PdfReader reader = new PdfReader(PdfFilePath);
                int pages = reader.getNumberOfPages();
                StringBuffer imgFilePath = null;
                String path = "";
                for (int i = 0; i < pages; i++) {
                    String imgFilePathPrefix = imgFolderPath + File.separator + imagePDFName;
                    imgFilePath = new StringBuffer();
                    imgFilePath.append(imgFilePathPrefix);
                    imgFilePath.append("_");
                    imgFilePath.append(String.valueOf(i + 1));
                    imgFilePath.append(".jpg");
                    File dstFile = new File(imgFilePath.toString());
                    BufferedImage image = renderer.renderImageWithDPI(i, dpi);
                    ImageIO.write(image, "jpg", dstFile);
                    path = dstFile.getAbsolutePath();
                }
                System.out.println("PDF文档转JPG图片成功！");
                return path;
            } else {
                System.out.println("PDF文档转JPG图片失败：" + "创建" + imgFolderPath + "失败");
                return "";
            }
        } catch (IOException e) {
            e.printStackTrace();
        }
        return "";
    }
    private static boolean createDirectory(String folder) {
        File dir = new File(folder);
        if (dir.exists()) {
            return true;
        } else {
            return dir.mkdirs();
        }
    }
}