import java.awt.image.BufferedImage;  import java.io.ByteArrayOutputStream;  import java.io.File;  import java.io.FileOutputStream;  import java.util.ArrayList;  import java.util.List;      import javax.imageio.ImageIO;      import org.apache.pdfbox.pdmodel.PDDocument;  import org.apache.pdfbox.rendering.ImageType;  import org.apache.pdfbox.rendering.PDFRenderer;      public class PDFBOXCreate {          public static void main(String[] args)throws Exception {          long start = System.currentTimeMillis();          String filepath = "D:/Users/ex-wangyide001/workspace/testsrc/1.pdf";          PDDocument document = new PDDocument();          File pdfFile = new File(filepath);          document = PDDocument.load(pdfFile, (String)null);          int size = document.getNumberOfPages();          List<BufferedImage> piclist = new ArrayList();           for(int i=0 ; i < size; i++){              BufferedImage  image = new PDFRenderer(document).renderImageWithDPI(i,130,ImageType.RGB);              piclist.add(image);          }          document.close();          yPic(piclist,"D:/Users/ex-wangyide001/workspace/testsrc/PDFBox1.jpg");         /* FileOutputStream out = new FileOutputStream("D:/Users/ex-wangyide001/workspace/testsrc/yanglaoxian/PDFBox-"+i+".jpg");         ImageIO.write(image, "jpg", out);         out.close();*/          long end = System.currentTimeMillis();          System.out.println(end-start);      }                  /**      * 将宽度相同的图片，竖向追加在一起 ##注意：宽度必须相同      *       * @param piclist      *            文件流数组      * @param outPath      *            输出路径      */      public static void yPic(List<BufferedImage> piclist, String outPath) {// 纵向处理图片          if (piclist == null || piclist.size() <= 0) {              System.out.println("图片数组为空!");              return;          }          try {              int height = 0, // 总高度              width = 0, // 总宽度              _height = 0, // 临时的高度 , 或保存偏移高度              __height = 0, // 临时的高度，主要保存每个高度              picNum = piclist.size();// 图片的数量              File fileImg = null; // 保存读取出的图片              int[] heightArray = new int[picNum]; // 保存每个文件的高度              BufferedImage buffer = null; // 保存图片流              List<int[]> imgRGB = new ArrayList<int[]>(); // 保存所有的图片的RGB              int[] _imgRGB; // 保存一张图片中的RGB数据              for (int i = 0; i < picNum; i++) {                  buffer = piclist.get(i);                  heightArray[i] = _height = buffer.getHeight();// 图片高度                  if (i == 0) {                      width = buffer.getWidth();// 图片宽度                  }                  height += _height; // 获取总高度                  _imgRGB = new int[width * _height];// 从图片中读取RGB                  _imgRGB = buffer                          .getRGB(0, 0, width, _height, _imgRGB, 0, width);                  imgRGB.add(_imgRGB);              }              _height = 0; // 设置偏移高度为0              // 生成新图片              BufferedImage imageResult = new BufferedImage(width, height,                      BufferedImage.TYPE_INT_BGR);              for (int i = 0; i < picNum; i++) {                  __height = heightArray[i];                  if (i != 0)                      _height += __height; // 计算偏移高度                  imageResult.setRGB(0, _height, width, __height, imgRGB.get(i),                          0, width); // 写入流中              }              File outFile = new File(outPath);              ByteArrayOutputStream out = new ByteArrayOutputStream();              ImageIO.write(imageResult, "jpg", out);// 写图片              byte[] b = out.toByteArray();              FileOutputStream output = new FileOutputStream(outFile);              output.write(b);              out.close();              output.close();          } catch (Exception e) {              e.printStackTrace();          }      }  }