Java使用icepdf将pdf文件按页转成图片

本文实例为大家分享了java使用icepdf将pdf文件按页转成图片的具体代码，供大家参考，具体内容如下

maven icepdf包，这里过滤掉jai-core

<dependency>
 <groupid>org.icepdf.os</groupid>
 <artifactid>icepdf-core</artifactid>
 <version>6.1.2</version> 
 <exclusions>
  <exclusion>
   <groupid>javax.media</groupid>
   <artifactid>jai-core</artifactid>
  </exclusion>
 </exclusions>
</dependency>

代码如下

import java.awt.image.bufferedimage;
import java.io.file;
import java.io.fileoutputstream;
import java.io.ioexception;
import java.text.decimalformat;
import java.util.arraylist;
import java.util.iterator;
import java.util.list;
import java.util.map;

import javax.imageio.iioimage;
import javax.imageio.imageio;
import javax.imageio.imagewriter;
import javax.imageio.stream.imageoutputstream;

import org.apache.commons.logging.logfactory;
import org.icepdf.core.exceptions.pdfexception;
import org.icepdf.core.exceptions.pdfsecurityexception;
import org.icepdf.core.pobjects.document;
import org.icepdf.core.pobjects.page;
import org.icepdf.core.util.graphicsrenderinghints;


public class test20160929 {
 public static final string filetype_jpg = "jpg";

 /**
  * 
  * 将指定的pdf文件转换为指定路径的图片
  * 
  * @param filepath 原文件路径，例如d:/test/test.pdf
  * 
  * @param imagepath 图片生成路径，例如 d:/test/
  * 
  * @param zoom 缩略图显示倍数，1表示不缩放，0.3则缩小到30%
  * 
  */
 public static void tranfer(string filepath, string imagepath, float zoom) throws pdfexception, pdfsecurityexception, ioexception {
  document document = null;
  float rotation = 0f;
  document = new document();
  document.setfile(filepath);
  int maxpages = document.getpagetree().getnumberofpages();

  for (int i = 0; i < maxpages; i++) {
   bufferedimage img = (bufferedimage) document.getpageimage(i, graphicsrenderinghints.screen, page.boundary_cropbox, rotation, zoom);
   iterator iter = imageio.getimagewritersbysuffix(filetype_jpg);
   imagewriter writer = (imagewriter) iter.next();
   file outfile = new file(imagepath + new file(filepath).getname() + "_" + new decimalformat("000").format(i) + "." + filetype_jpg);
   fileoutputstream out = new fileoutputstream(outfile);
   imageoutputstream outimage = imageio.createimageoutputstream(out);
   writer.setoutput(outimage);
   writer.write(new iioimage(img, null, null));
  }
  system.out.println("转换完成");
 }

 public static void main(string[] args) throws pdfexception, pdfsecurityexception, ioexception {
  tranfer("d:/test/test.pdf", "d:/test/", 1);
 }
}

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持。