JAVA使用pdfbox将pdf转换成图片

使用的工具包：

pdfbox-1.8

fontbox-1.8

maven中导入：

<dependency>
<groupId>org.apache.pdfbox</groupId>
<artifactId>pdfbox</artifactId>
<version>1.8.10</version>
</dependency>

注意: 对要求过高项目不建议使用(转化过程中出现字符重叠现象).

下面看代码

package com.yqrt.core.pdf2img;

import java.awt.image.BufferedImage;
import java.io.BufferedInputStream;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.util.Iterator;
import java.util.List;

import javax.imageio.IIOImage;
import javax.imageio.ImageIO;
import javax.imageio.ImageWriter;
import javax.imageio.stream.ImageOutputStream;

import org.apache.pdfbox.exceptions.COSVisitorException;
import org.apache.pdfbox.pdfparser.PDFParser;
import org.apache.pdfbox.pdmodel.PDDocument;
import org.apache.pdfbox.pdmodel.PDPage;

/**
 * Hello world!
 *
 */
public class App 
{

public final  static String  IMG_TYPE_JPG = "jpg";
public final  static String  IMG_TYPE_PNG = "png";
    public static void main( String[] args ) throws IOException
    {
    App app = new App();
    app.pdf2img("D:\\api.pdf", "D:",IMG_TYPE_PNG);
//    PDDocument pdDocument = app.pdfInfo("D:\\api.pdf");



    }


    /**
     * 
     * @param pdfPath pdf文件的路径
     * @param savePath 图片保存的地址
     * @param imgType 图片保存方式
     */
    public void pdf2img(String pdfPath,String savePath,String imgType){
    String fileName = pdfPath.substring(pdfPath.lastIndexOf("\\")+1, pdfPath.length());
    fileName = fileName.substring(0,fileName.lastIndexOf("."));
    InputStream  is = null;
    PDDocument pdDocument = null; 
    try {
        is = new BufferedInputStream(new FileInputStream(pdfPath));
        PDFParser parser = new PDFParser(is);
        parser.parse();
        pdDocument = parser.getPDDocument();
        List<PDPage> pages = pdDocument.getDocumentCatalog().getAllPages();
        for (int i = 0; i < pages.size(); i++) {
        String saveFileName = savePath+"\\"+fileName+i+"."+imgType;
        PDPage page =  pages.get(i);
        pdfPage2Img(page,saveFileName,imgType);
}
} catch (Exception e) {
e.printStackTrace();
}finally{
if(pdDocument != null){
try {
pdDocument.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}


    }

    /**
     * pdf页转换成图片
     * @param page
     * @param saveFileName
     * @throws IOException
     */
    public void pdfPage2Img(PDPage page,String saveFileName,String imgType) throws IOException{
    BufferedImage img_temp  = page.convertToImage();
    Iterator<ImageWriter> it = ImageIO.getImageWritersBySuffix(imgType);
    ImageWriter writer = (ImageWriter) it.next(); 
    ImageOutputStream imageout = ImageIO.createImageOutputStream(new FileOutputStream(saveFileName));
    writer.setOutput(imageout);
    writer.write(new IIOImage(img_temp, null, null));
    }



    public PDDocument pdfInfo(String filePath) throws IOException{
    InputStream  is  = new BufferedInputStream(new FileInputStream(filePath));
    PDFParser parser = new PDFParser(is);
    parser.parse();
    PDDocument pdDocument =  parser.getPDDocument();
    System.out.println("pageNum:"+pdDocument.getNumberOfPages());
    return pdDocument;
    }





    public void createPdf() throws COSVisitorException, IOException{
    PDDocument document = new PDDocument();
        PDPage blankPage = new PDPage();
        document.addPage(blankPage);
        document.save("D:\\test.pdf");
        document.close();
    }
}