pdf转图片工具类

太过爱你忘了你带给我的痛 2021-10-13 14:54 361阅读 0赞

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();
    		}
    	}
     
    }