利用ITEXT、PDFBOX将PDF转为图片

import java.awt.image.BufferedImage; import java.io.ByteArrayInputStream; import java.io.ByteArrayOutputStream; import java.io.FileOutputStream; import java.io.OutputStream; import javax.imageio.ImageIO; import javax.imageio.stream.ImageOutputStream; import org.apache.pdfbox.pdmodel.PDDocument; import org.apache.pdfbox.pdmodel.PDPage; import org.apache.pdfbox.util.ImageIOUtil; import com.lowagie.text.pdf.PdfReader; import com.lowagie.text.pdf.PdfStamper; public class PdfPageToImg { /** * PDFBOX转图片 * @param pdfUrl pdf的路径 * @param imgTempUrl 图片输出路径 */ public static void pdfToImage(String pdfUrl , String imgTempUrl){ try{ //读入PDF PdfReader pdfReader = new PdfReader(pdfUrl); //计算PDF页码数 int pageCount = pdfReader.getNumberOfPages(); //循环每个页码 for(int i=pageCount ; i>=pdfReader.getNumberOfPages() ; i--){ ByteArrayOutputStream out = new ByteArrayOutputStream(); PdfStamper pdfStamper = null; PDDocument pdDocument=null; pdfReader = new PdfReader(pdfUrl); pdfReader.selectPages(String.valueOf(i)); pdfStamper = new PdfStamper(pdfReader, out); pdfStamper.close(); //利用PdfBox生成图像 pdDocument = PDDocument.load(new ByteArrayInputStream(out.toByteArray())); OutputStream outputStream = new FileOutputStream(imgTempUrl + "ImgName" + "-" + i + ".bmp"); ImageOutputStream output = ImageIO.createImageOutputStream(outputStream); PDPage page = (PDPage)pdDocument.getDocumentCatalog().getAllPages().get(0); BufferedImage image = page.convertToImage(BufferedImage.TYPE_INT_RGB, 96); ImageIOUtil.writeImage(image, "bmp", outputStream, 96); if (output != null) { output.flush(); output.close(); } pdDocument.close(); } }catch(Exception e){ e.printStackTrace(); } } }