学习之路，长路漫漫，写学习笔记的过程就是把知识讲给自己听的过程。这个过程中，我们去记录思考的过程，便于日后复习，梳理自己的思路。学习之乐，独乐乐，不如众乐乐，把知识讲给更多的人听，何乐而不为呢?
你可以从以下几个方面着手（不强制），或者根据自己对话题主题的理解创作，参考如下：
package com.util; import java.awt.Color; import java.awt.Graphics2D; import java.awt.image.BufferedImage; import java.io.ByteArrayInputStream; import java.io.ByteArrayOutputStream; import java.io.File; import java.io.FileInputStream; import java.io.IOException; import java.io.InputStream; import java.io.OutputStream; import java.util.ArrayList; import java.util.Date; import java.util.List; import javax.imageio.ImageIO; import javax.imageio.stream.ImageInputStream; import com.aspose.words.Document; import com.aspose.words.ImageSaveOptions; import com.aspose.words.SaveFormat; public class OfficeUtils { /** * 验证aspose.word组件是否授权：无授权的文件有水印标记 * 需要使用（aspose-words-15.8.0-jdk16.jar），版本要对应。无水印 * @return */ public static boolean isWordLicense() { boolean result = false; try { String s = "<License><Data><Products><Product>Aspose.Total for Java</Product><Product>Aspose.Words for Java</Product></Products><EditionType>Enterprise</EditionType><SubscriptionExpiry>20991231</SubscriptionExpiry><LicenseExpiry>20991231</LicenseExpiry><SerialNumber>8bfe198c-7f0c-4ef8-8ff0-acc3237bf0d7</SerialNumber></Data><Signature>sNLLKGMUdF0r8O1kKilWAGdgfs2BvJb/2Xp8p5iuDVfZXmhppo+d0Ran1P9TKdjV4ABwAgKXxJ3jcQTqE/2IRfqwnPf8itN8aFZlV3TJPYeD3yWE7IT55Gz6EijUpC7aKeoohTb4w2fpox58wWoF3SNp6sK6jDfiAUGEHYJ9pjU=</Signature></License>"; ByteArrayInputStream inputStream = new ByteArrayInputStream(s.getBytes()); com.aspose.words.License license = new com.aspose.words.License(); license.setLicense(inputStream); result = true; } catch (Exception e) { e.printStackTrace(); } return result; } //outputStream转inputStream public static ByteArrayInputStream parse(OutputStream out) throws Exception { ByteArrayOutputStream baos = new ByteArrayOutputStream(); baos = (ByteArrayOutputStream) out; ByteArrayInputStream swapStream = new ByteArrayInputStream(baos.toByteArray()); return swapStream; } /** * word和txt文件转换图片 * @param inputStream * @param * @return * @throws Exception */ private static List<BufferedImage> wordToImg(InputStream inputStream) throws Exception { if (!isWordLicense()) { return null; } try { Date start = new Date(); Document doc = new Document(inputStream); ImageSaveOptions options = new ImageSaveOptions(SaveFormat.PNG); options.setPrettyFormat(true); options.setUseAntiAliasing(true); options.setUseHighQualityRendering(true); int pageCount = doc.getPageCount(); //生成前pageCount张，这可以限制输出长图时的页数（方法入参可以传值pageNum） /*if (pageCount > pageNum) { pageCount = pageNum; }*/ List<BufferedImage> imageList = new ArrayList<BufferedImage>(); for (int i = 0; i < pageCount; i++) { OutputStream output = new ByteArrayOutputStream(); options.setPageIndex(i); doc.save(output, options); ImageInputStream imageInputStream = javax.imageio.ImageIO.createImageInputStream(parse(output)); imageList.add(javax.imageio.ImageIO.read(imageInputStream)); } List<BufferedImage> imageList2 = new ArrayList<BufferedImage>(); //这个重新生成新的图片是因为直接输出的图片底色为红色 for(int j=0; j<imageList.size(); j++) { // 生成新图片 BufferedImage destImage = imageList.get(j); int w1 = destImage.getWidth(); int h1 = destImage.getHeight(); destImage = new BufferedImage(w1, h1, BufferedImage.TYPE_INT_RGB); Graphics2D g2 = (Graphics2D) destImage.getGraphics(); g2.setBackground(Color.LIGHT_GRAY); g2.clearRect(0, 0, w1, h1); g2.setPaint(Color.RED); // 从图片中读取RGB int[] ImageArrayOne = new int[w1 * h1]; ImageArrayOne = imageList.get(j).getRGB(0, 0, w1, h1, ImageArrayOne, 0, w1); // 逐行扫描图像中各个像素的RGB到数组中 destImage.setRGB(0, 0, w1, h1, ImageArrayOne, 0, w1); // 设置上半部分或左半部分的RGB imageList2.add(destImage); } Date end = new Date(); long l=end.getTime()-start.getTime(); long hour= l / (1000 * 60 * 60); long min= (l-hour*(1000 * 60 * 60 ))/(1000* 60); long s= (l-hour*(1000 * 60 * 60 )-min*1000*60)/(1000); long ss= (l-hour*(1000 * 60 * 60 )-min*1000*60 -s*1000)/(1000/60); System.out.println("word转图片时间:"+min+"分"+s+"秒" + ss + "毫秒");//hour+"小时"+ return imageList2; } catch (Exception e) { e.printStackTrace(); throw e; } } /** * 合并任数量的图片成一张图片 * @param isHorizontal true代表水平合并，fasle代表垂直合并 * @param imgs 待合并的图片数组 * @return * @throws IOException */ public static BufferedImage mergeImage(boolean isHorizontal, List<BufferedImage> imgs) throws IOException { // 生成新图片 BufferedImage destImage = null; // 计算新图片的长和高 int allw = 0, allh = 0, allwMax = 0, allhMax = 0; // 获取总长、总宽、最长、最宽 for (int i = 0; i < imgs.size(); i++) { BufferedImage img = imgs.get(i); allw += img.getWidth(); if (imgs.size() != i + 1) { allh += img.getHeight() + 5; } else { allh += img.getHeight(); } if (img.getWidth() > allwMax) { allwMax = img.getWidth(); } if (img.getHeight() > allhMax) { allhMax = img.getHeight(); } } // 创建新图片 if (isHorizontal) { destImage = new BufferedImage(allw, allhMax, BufferedImage.TYPE_INT_RGB); } else { destImage = new BufferedImage(allwMax, allh, BufferedImage.TYPE_INT_RGB); } Graphics2D g2 = (Graphics2D) destImage.getGraphics(); g2.setBackground(Color.LIGHT_GRAY); g2.clearRect(0, 0, allw, allh); g2.setPaint(Color.RED); // 合并所有子图片到新图片 int wx = 0, wy = 0; for (int i = 0; i < imgs.size(); i++) { BufferedImage img = imgs.get(i); int w1 = img.getWidth(); int h1 = img.getHeight(); // 从图片中读取RGB int[] ImageArrayOne = new int[w1 * h1]; ImageArrayOne = img.getRGB(0, 0, w1, h1, ImageArrayOne, 0, w1); // 逐行扫描图像中各个像素的RGB到数组中 if (isHorizontal) { // 水平方向合并 destImage.setRGB(wx, 0, w1, h1, ImageArrayOne, 0, w1); // 设置上半部分或左半部分的RGB } else { // 垂直方向合并 destImage.setRGB(0, wy, w1, h1, ImageArrayOne, 0, w1); // 设置上半部分或左半部分的RGB } wx += w1; wy += h1 + 5; } return destImage; } // 测试工具类 public static void main(String[] args) { //word转图片格式 try { File file = new File("G:\\test\\test22.docx"); InputStream inStream = new FileInputStream(file); List<BufferedImage> wordToImg = wordToImg(inStream); //for(int i=0; i<wordToImg.size(); i++){ //可以保存图片（每页保存为一张） // ImageIO.write(wordToImg.get(i), "jpg", new File("G:\\test\\"+ i +".png")); //将其保存在C:/imageSort/targetPIC/下 //} BufferedImage mergeImage = mergeImage(false, wordToImg); //保存图片（长图） ImageIO.write(mergeImage, "jpg", new File("G:\\test\\test.png")); } catch (Exception e) { e.printStackTrace(); } } }
