PDF转图片--Java实现 (pdfbox)

     

	org.apache.pdfbox     

	fontbox     

	2.0.1 

 

   

	org.apache.pdfbox   

	pdfbox  

	 2.0.1 

 

package test;

 

import java.awt.image.BufferedImage;

import java.io.File;

import java.io.IOException;

 

import javax.imageio.ImageIO;

 

import org.apache.pdfbox.pdmodel.PDDocument;

import org.apache.pdfbox.rendering.PDFRenderer;

 

import com.lowagie.text.pdf.PdfReader;

 

public class PDF2IMAGE {

	public static void main(String[] args) {

		pdf2Image("D:/1.pdf", "D:/pdf", 300);

	}

 

	/***

	 * PDF文件转PNG图片，全部页数

	 * 

	 * @param PdfFilePath pdf完整路径

	 * @param imgFilePath 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 void pdf2Image(String PdfFilePath, String dstImgFolder, int dpi) {

		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, dpi);

					ImageIO.write(image, "png", dstFile);

				}

				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();

		}

	}

 

	private static boolean createDirectory(String folder) {

		File dir = new File(folder);

		if (dir.exists()) {

			return true;

		} else {

			return dir.mkdirs();

		}

	}

 

}