JAVA PDF转图片-蒲公英云

JAVA PDF转图片

引入 JAR 包

代码样例

引入 JAR 包

SpringBoot 项目在Maven pom中引入

<dependency>
    <groupId>org.apache.pdfbox</groupId>
    <artifactId>fontbox</artifactId>
    <version>2.0.1</version>
</dependency>
<dependency>
    <groupId>org.apache.pdfbox</groupId>
    <artifactId>pdfbox</artifactId>
    <version>2.0.1</version>
</dependency>
<dependency>
    <groupId>com.lowagie</groupId>
    <artifactId>itext</artifactId>
    <version>2.1.7</version>
</dependency>

代码样例

package com.link.jiandanbiao.common.util;
import com.lowagie.text.pdf.PdfReader;
import org.apache.pdfbox.pdmodel.PDDocument;
import org.apache.pdfbox.rendering.PDFRenderer;
import javax.imageio.ImageIO;
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.IOException;
public class PdfToImage {
    public static void main(String[] args) {
       pdf2Image("F:\\简历.pdf", "F:\\pdf2Image");
    }
    /**
     * @param PdfFilePath  pdf路径
     * @param dstImgFolder
     */
    public static void pdf2Image(String PdfFilePath, String dstImgFolder) {
        File file = new File(PdfFilePath);
        PDDocument pdDocument;
        try {
            String imgPDFPath = file.getParent();
            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 + File.separator + imagePDFName;// 获取图片存放的文件夹路径
            } else {
                imgFolderPath = dstImgFolder + File.separator + imagePDFName;
            }
            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;
                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(".png");
                    File dstFile = new File(imgFilePath.toString());
                    BufferedImage image = renderer.renderImageWithDPI(i, 300);
                    ImageIO.write(image, "png", dstFile);
                    System.out.println("正在转码,请稍后....");
                }
                System.out.println("PDF文档转PNG图片成功！");
            } else {
                System.out.println("PDF文档转PNG图片失败：" + "创建" + imgFolderPath + "失败");
            }
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
    /**
     * @param file  pdf文件
     * @param dstImgFolder
     */
    public static void pdf2ImageByFile(File file, String dstImgFolder) {
        PDDocument pdDocument;
        try {
            String imgPDFPath = file.getParent();
            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 + File.separator + imagePDFName;// 获取图片存放的文件夹路径
            } else {
                imgFolderPath = dstImgFolder + File.separator + imagePDFName;
            }
            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(file.getPath());
                int pages = reader.getNumberOfPages();
                StringBuffer imgFilePath = null;
                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(".png");
                    File dstFile = new File(imgFilePath.toString());
                    BufferedImage image = renderer.renderImageWithDPI(i, 300);
                    ImageIO.write(image, "png", dstFile);
                    System.out.println("正在转码,请稍后....");
                }
                System.out.println("PDF文档转PNG图片成功！");
            } else {
                System.out.println("PDF文档转PNG图片失败：" + "创建" + imgFolderPath + "失败");
            }
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
    private static boolean createDirectory(String folder) {
        File dir = new File(folder);
        if (dir.exists()) {
            return true;
        } else {
            return dir.mkdirs();
        }
    }
}