pdf转图片

1.使用apache.pdfbox

引入依赖

        <!-- https://mvnrepository.com/artifact/org.apache.pdfbox/fontbox -->
        <dependency>
            <groupId>org.apache.pdfbox</groupId>
            <artifactId>fontbox</artifactId>
            <version>2.0.9</version>
        </dependency>
        <!-- https://mvnrepository.com/artifact/org.apache.pdfbox/pdfbox -->
        <dependency>
            <groupId>org.apache.pdfbox</groupId>
            <artifactId>pdfbox</artifactId>
            <version>2.0.9</version>
        </dependency>

实现代码

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

import javax.imageio.ImageIO;
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.IOException;

public class PdfUtils {

	/*public static void main(String[] args) {
		pdf2png("E:\\wendang\\test","综合分析报告","png");
	}*/

	/**
	 * 转换全部的pdf
	 * @param fileAddress 文件地址
	 * @param filename PDF文件名
	 * @param type 图片类型
	 */
	public static void pdf2png(String fileAddress,String filename,String type) {
		// 将pdf装图片 并且自定义图片得格式大小
		File file = new File(fileAddress+"\\"+filename+".pdf");
		try {
			PDDocument doc = PDDocument.load(file);
			PDFRenderer renderer = new PDFRenderer(doc);
			int pageCount = doc.getNumberOfPages();
			for (int i = 0; i < pageCount; i++) {
				BufferedImage image = renderer.renderImageWithDPI(i, 144); // Windows native DPI
				// BufferedImage srcImage = resize(image, 240, 240);//产生缩略图
				ImageIO.write(image, type, new File(fileAddress+"\\"+filename+"_"+(i+1)+"."+type));
			}
		} catch (IOException e) {
			e.printStackTrace();
		}
	}


	/**
	 *自由确定起始页和终止页
	 * @param fileAddress 文件地址
	 * @param filename pdf文件名
	 * @param indexOfStart 开始页  开始转换的页码，从0开始
	 * @param indexOfEnd 结束页  停止转换的页码，-1为全部
	 * @param type 图片类型
	 */
	public static void pdf2png(String fileAddress,String filename,int indexOfStart,int indexOfEnd,String type) {
		// 将pdf装图片 并且自定义图片得格式大小
		File file = new File(fileAddress+"\\"+filename+".pdf");
		try {
			PDDocument doc = PDDocument.load(file);
			PDFRenderer renderer = new PDFRenderer(doc);
			int pageCount = doc.getNumberOfPages();
			for (int i = indexOfStart; i < indexOfEnd; i++) {
				BufferedImage image = renderer.renderImageWithDPI(i, 144); // Windows native DPI
				// BufferedImage srcImage = resize(image, 240, 240);//产生缩略图
				ImageIO.write(image, type, new File(fileAddress+"\\"+filename+"_"+(i+1)+"."+type));
			}
		} catch (IOException e) {
			e.printStackTrace();
		}
	}

}