要将PDF转换为图像,可以使用PDFbox

以下是使用pdfbox API将PDF转换为图像的代码

import java.awt.image.BufferedImage;

import java.io.File;

import java.io.IOException;

import java.util.ArrayList;

import java.util.List;

import javax.imageio.ImageIO;

import org.apache.pdfbox.pdmodel.PDDocument;

import org.apache.pdfbox.pdmodel.PDPage;

import org.apache.pdfbox.pdmodel.PDPageNode;

public List generateImages(String pdfFile) throws IOException {

String imagePath = "/Users/$user/pdfimages/";

List fileNames = new ArrayList();

document = PDDocument.load(pdfFile); load pdf

node = document.getDocumentCatalog().getPages(); / get pages

List kids = node.getKids();

int count=0;

for(PDPage page : kids) { / iterate

BufferedImage img = page.convertToImage(BufferedImage.TYPE_INT_RGB,128);

File imageFile = new File(imagePath+ count++ + ".jpg");

ImageIO.write(img, "jpg", imageFile);

fileNames.add(imageFile.getName());

}

return fileNames;

}

另外,另一个库ApachePOI可用于将PDF转换为图像

这是代码示例

import java.awt.Color;

import java.awt.Dimension;

import java.awt.Graphics2D;

import java.awt.RenderingHints;

import java.awt.geom.Rectangle2D;

import java.awt.image.BufferedImage;

import java.io.FileInputStream;

import java.io.FileNotFoundException;

import java.io.FileOutputStream;

import java.io.IOException;

import org.apache.poi.hslf.model.Slide;

import org.apache.poi.hslf.usermodel.SlideShow;

public class JavaApplication12 {

public static void main(String[] args) throws FileNotFoundException, IOException {

FileInputStream is = new FileInputStream(“D:/Presentation1.ppt”);

SlideShow ppt = new SlideShow(is);

is.close();

Dimension pgsize = ppt.getPageSize();

Slide[] slide = ppt.getSlides();

for (int i = 0; i < slide.length; i++) {

BufferedImage img = new BufferedImage(pgsize.width, pgsize.height, 1);

Graphics2D graphics = img.createGraphics();

graphics.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);

graphics.setRenderingHint(RenderingHints.KEY_RENDERING, RenderingHints.VALUE_RENDER_QUALITY);

graphics.setRenderingHint(RenderingHints.KEY_INTERPOLATION,

RenderingHints.VALUE_INTERPOLATION_BICUBIC);

graphics.setRenderingHint(RenderingHints.KEY_FRACTIONALMETRICS,

RenderingHints.VALUE_FRACTIONALMETRICS_ON);

graphics.setColor(Color.white);

graphics.clearRect(0, 0, pgsize.width, pgsize.height);

graphics.fill(new Rectangle2D.Float(0, 0, pgsize.width, pgsize.height));

// render

slide[i].draw(graphics);

// save the output

FileOutputStream out = new FileOutputStream(“slide-” + (i + 1) + “.png”);

javax.imageio.ImageIO.write(img, “png”, out);

out.close();

}

}

}

要将MS Word转换为图像,请查看发布的问题here

使用哪个JODConverter

JODConverter自动执行OpenOffice.org支持的所有转换,包括

>任何格式的PDF

??o OpenDocument(文本,电子表格,演示文稿)为PDF

??o Word转换为PDF； Excel转PDF PowerPoint转PDF

??o RTF转换为PDF； WordPerfect到PDF； …

>还有更多

??o OpenDocument Presentation(odp)到Flash； PowerPoint到Flash

??o RTF到OpenDocument； WordPerfect到OpenDocument

??o任何HTML格式(有限制)

??o支持OpenOffice.org 1.0和旧版StarSuite格式