java 实现PDF转TIFF 格式

需要的依赖与代码实现

下载 jar 直接引入本地

<dependency>
    <groupId>com.sun.media</groupId>
    <artifactId>jai_codec</artifactId>
    <version>1.1-mr</version>
    <scope>system</scope>
    <systemPath>${project.basedir}/lib/jai-codec-1.1.3.jar</systemPath>
</dependency>
<dependency>
    <groupId>javax.media</groupId>
    <artifactId>jai_core</artifactId>
    <version>1.1-mr</version>
    <scope>system</scope>
    <systemPath>${project.basedir}/lib/jai_core-1.1.3.jar</systemPath>
</dependency>
<dependency>
    <groupId>org.apache.pdfbox</groupId>
    <artifactId>pdfbox</artifactId>
    <version>2.0.0-RC2</version>
</dependency>

package com.webdemo.controllers;

import java.awt.image.BufferedImage;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.util.ArrayList;
import java.util.List;

import javax.media.jai.JAI;
import javax.media.jai.PlanarImage;

import org.apache.pdfbox.pdmodel.PDDocument;
import org.apache.pdfbox.rendering.ImageType;
import org.apache.pdfbox.rendering.PDFRenderer;

import com.sun.media.jai.codec.ImageCodec;
import com.sun.media.jai.codec.ImageEncoder;
import com.sun.media.jai.codec.TIFFEncodeParam;

public class Pdf2TiffUtil
{

    public static void main(String[] args) throws Exception
    {
        InputStream in = new FileInputStream(new File("F://123.pdf"));
        OutputStream out = new FileOutputStream("F://123.tiff");
        pdfToTiff(in, out);

    }

    /** 图片格式 */
    public static final String IMG_FORMAT = "tiff";

    /** 打印精度设置 */
    public static final int DPI = 220; // 图片的像素
    /**
     * 从输入流读取pdf，转化为tiff后写入输出流.<br/>
     * 
     * @param is 输入流，提供pfg内容.
     * @param os 输出流.
     */

    static
    {
        System.setProperty("com.sun.media.jai.disableMediaLib", "true");
    }

    public static void pdfToTiff(InputStream is, OutputStream os)
    {
        PDDocument doc = null;
        try
        {
            doc = PDDocument.load(is);
            int pageCount = doc.getNumberOfPages();
            PDFRenderer renderer = new PDFRenderer(doc); // 根据PDDocument对象创建pdf渲染器

            List<PlanarImage> piList = new ArrayList<PlanarImage>(pageCount - 1);
            for (int i = 0 + 1; i < pageCount; i++)
            {
                BufferedImage image = renderer.renderImageWithDPI(i, DPI, ImageType.RGB);
                PlanarImage pimg = JAI.create("mosaic", image);
                piList.add(pimg);
            }

            TIFFEncodeParam param = new TIFFEncodeParam();// 创建tiff编码参数类
            param.setCompression(TIFFEncodeParam.COMPRESSION_DEFLATE);// 压缩参数
            param.setExtraImages(piList.iterator());// 设置图片的迭代器

            BufferedImage fimg = renderer.renderImageWithDPI(0, DPI, ImageType.RGB);
            PlanarImage fpi = JAI.create("mosaic", fimg); // 通过JAI的create()方法实例化jai的图片对象

            ImageEncoder enc = ImageCodec.createImageEncoder(IMG_FORMAT, os, param);
            enc.encode(fpi);// 指定第一个进行编码的jai图片对象,并将输出写入到与此
        } catch (IOException e)
        {
            e.printStackTrace();
        } finally
        {
            try
            {
                if (doc != null) doc.close();
            } catch (IOException e)
            {
                e.printStackTrace();
            }
        }
    }
}