Java代码把PDF文件转换成PNG文件
需要引用aspose包,引入操作我写了一个博客,地址如下
/weixin_46713508/article/details/125495770?spm=1001..3001.5502
直接上代码了
<?xml version="1.0" encoding="UTF-8"?><project xmlns="/POM/4.0.0"xmlns:xsi="/2001/XMLSchema-instance"xsi:schemaLocation="/POM/4.0.0 /xsd/maven-4.0.0.xsd"><modelVersion>4.0.0</modelVersion><groupId>com.test</groupId><artifactId>aspose-word-excel</artifactId><version>1.0-SNAPSHOT</version><dependencies><!--word文件转PDF以及水印--><dependency><groupId>e-iceblue</groupId><artifactId>spire.doc.free</artifactId><version>3.9.0</version></dependency><dependency><groupId>e-iceblue</groupId><artifactId>spire.pdf.free</artifactId><version>3.9.0</version></dependency><!--解析word时用到的包--><dependency><groupId>com.lowagie</groupId><artifactId>itext</artifactId><version>2.1.7</version></dependency><!--lombok--><dependency><groupId>org.projectlombok</groupId><artifactId>lombok</artifactId><version>1.18.16</version><scope>compile</scope></dependency><!--Aspose相关依赖 需要在本地指定导入--><dependency><groupId>com.aspose.words</groupId><artifactId>aspose-words</artifactId><version>words-15.8.0-jdk16</version><scope>system</scope><systemPath>${project.basedir}/src/main/resources/lib/aspose-words-15.8.0-jdk16.jar</systemPath></dependency><dependency><groupId>com.aspose.cells</groupId><artifactId>aspose-cells</artifactId><version>cell-8.5.2</version><scope>system</scope><systemPath>${project.basedir}/src/main/resources/lib/aspose-cells-8.5.2.jar</systemPath></dependency><dependency><groupId>com.aspose.pdf</groupId><artifactId>aspose-pdf</artifactId><version>pdf-17.3.0</version><scope>system</scope><systemPath>${project.basedir}/src/main/resources/lib/aspose.pdf-17.3.0.jar</systemPath></dependency><!--文件上传--><!--骑缝章相关依赖--><dependency><groupId>com.itextpdf</groupId><artifactId>itextpdf</artifactId><version>5.5.13</version></dependency><dependency><groupId>com.itextpdf</groupId><artifactId>itext-asian</artifactId><version>5.2.0</version></dependency><dependency><groupId>com.itextpdf.tool</groupId><artifactId>xmlworker</artifactId><version>5.5.13</version></dependency><dependency><groupId>fr.opensagres.xdocreport</groupId><artifactId>fr.opensagres.poi.xwpf.converter.pdf-gae</artifactId><version>2.0.1</version></dependency></dependencies><repositories><repository><id>com.e-iceblue</id><url>https://repo.e-/repository/maven-public/</url></repository></repositories></project>
license.xml
<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>
/*** 获取license** @return*/public static boolean getLicense() {boolean result = false;try {InputStream is = ConvertPDFUtils.class.getClassLoader().getResourceAsStream("\\license.xml");License aposeLic = new License();aposeLic.setLicense(is);result = true;} catch (Exception e) {e.printStackTrace();}return result;}
//pdf转换pngpublic boolean pngConvertPdf(MultipartFile file, String outPath) throws Exception {// 验证Licenseif (!ConvertPDFUtils.getLicense()) {return false;}try {Document pdfDocument = new Document(file.getInputStream());Resolution resolution = new Resolution(960);;PngDevice pngDevice = new PngDevice(resolution);for (int index = 1; index <= pdfDocument.getPages().size(); index++) {// 输出路径File fileInfo = new File(outPath);FileOutputStream fileOs = new FileOutputStream(fileInfo);pngDevice.process(pdfDocument.getPages().get_Item(index), fileOs);fileOs.close();}return true;} catch (Exception e) {e.printStackTrace();return false;}}
public static void main(String[] args) {String sourcePath = "D:\\File\\test.pdf";String targetPath = "D:\\File\\";long old = System.currentTimeMillis();ConvertPDFUtils.pdfToImage(sourcePath, targetPath);long now = System.currentTimeMillis();System.out.println("pdf转图片成功,共耗时：" + ((now - old) / 1000.0) + "秒");}
PDF文件水印转换成PNG格式
/*** @param sourceFile 需要重新重命名的图片路径* @param targetPath 重命名的图片路径保存地址*/public static void fileCopyRightWay(String sourceFile, String targetPath) {try {//读取源地址文件的字节流FileInputStream in = new FileInputStream(sourceFile);FileOutputStream out = new FileOutputStream(targetPath);byte[] bs = new byte[1026];int count = 0;while ((count = in.read(bs, 0, bs.length)) != -1) {//把读取到的字节流写入到目的地址的文件里面out.write(bs, 0, count);}//刷新下输出流out.flush();// 关闭输入流和输出流out.close();out.close();} catch (FileNotFoundException e) {e.printStackTrace();} catch (IOException e) {e.printStackTrace();}}
public static void main(String[] args) throws IOException {String sourcePath = "D:\\file\\体重变化图表.pdf";String targetPath = "D:\\file\\";PdfDocument pdf = new PdfDocument();pdf.loadFromFile(sourcePath);//添加一个空白页，目的为了删除jar包添加的水印，后面再移除这一页pdf.getPages().add();PdfReader reader = new PdfReader(sourcePath);BufferedImage image;int total1 = reader.getNumberOfPages();for(int i =0 ; i<total1;i++){image = pdf.saveAsImage(i);//将每一页pdf拆分出来保存为图片File file = new File(String.format(targetPath+"Watermark33"+i+".png",i));ImageIO.write(image,"PNG",file);ConvertPDFUtils.fileCopyRightWay(targetPath+"Watermark33"+i+".png",targetPath+"测试3_"+i+".png");//对图片进行重命名}pdf.getPages().remove(pdf.getPages().get(pdf.getPages().getCount()-1));pdf.close();}
意思代码可能不全 下面是全部工具类代码
package dmyz.util;import com.aspose.cells.License;import com.aspose.cells.SaveFormat;import com.aspose.cells.Workbook;import com.aspose.pdf.*;import com.aspose.pdf.devices.JpegDevice;import com.aspose.pdf.devices.PngDevice;import com.aspose.pdf.devices.Resolution;import com.spire.pdf.PdfPageBase;import com.spire.pdf.graphics.*;import javax.imageio.ImageIO;import java.awt.Color;import java.awt.Font;import java.awt.*;import java.awt.geom.Dimension2D;import java.awt.geom.Point2D;import java.awt.geom.Rectangle2D;import java.awt.image.BufferedImage;import java.io.*;import java.util.ArrayList;import java.util.List;public class ConvertPDFUtils {/*** 获取license** @return*/public static boolean getLicense() {boolean result = false;try {InputStream is = ConvertPDFUtils.class.getClassLoader().getResourceAsStream("\\license.xml");License aposeLic = new License();aposeLic.setLicense(is);result = true;} catch (Exception e) {e.printStackTrace();}return result;}/*** 支持DOC, DOCX, OOXML, RTF, HTML, OpenDocument, PDF, EPUB, XPS, SWF等相互转换<br>** @param excelfilePath [原始excel路径]* @param pdfFilePath [输出路径]*/public static Boolean excelConvertToPdf(String excelfilePath, String pdfFilePath) {// 验证Licenseif (!getLicense()) {return false;}try {// 原始excel路径Workbook wb = new Workbook(excelfilePath);// 输出路径File pdfFile = new File(pdfFilePath);FileOutputStream fileOS = new FileOutputStream(pdfFile);wb.save(fileOS, SaveFormat.PDF);return true;} catch (Exception e) {e.printStackTrace();return false;}}/*** 支持DOC, DOCX, OOXML, RTF, HTML, OpenDocument, PDF, EPUB, XPS, SWF等相互转换<br>** @param wordfilePath [原始excel路径]* @param pdfFilePath [输出路径]*/public static Boolean wordConvertToPdf(String wordfilePath, String pdfFilePath) {// 验证Licenseif (!getLicense()) {return false;}try {// 原始word路径Document doc = new Document(wordfilePath);// 输出路径File pdfFile = new File(pdfFilePath);FileOutputStream fileOS = new FileOutputStream(pdfFile);doc.save(fileOS,SaveFormat.PDF);return true;} catch (Exception e) {e.printStackTrace();return false;}}/*** 将pdf转图片** @param inputStream pdf源文件流* @param imgFilePath 转成一张图片文件全路径 例如 "D:\\home\\qq.png"*/public static void pdfToImage(InputStream inputStream, String imgFilePath) {try {System.out.println("convert pdf2jpg begin");long old = System.currentTimeMillis();if (!getLicense()) {return;}Document pdfDocument = new Document(inputStream);//分辨率Resolution resolution = new Resolution(130);JpegDevice jpegDevice = new JpegDevice(resolution);List<BufferedImage> imageList = new ArrayList<BufferedImage>();List<File> fileList = new ArrayList<File>();for (int index = 1; index <= pdfDocument.getPages().size(); index++) {File file = File.createTempFile("tempFile", "png");FileOutputStream fileOS = new FileOutputStream(file);jpegDevice.process(pdfDocument.getPages().get_Item(index), fileOS);fileOS.close();imageList.add(ImageIO.read(file));fileList.add(file);}//临时文件删除BufferedImage mergeImage = mergeImage(false, imageList);ImageIO.write(mergeImage, "png", new File(imgFilePath));long now = System.currentTimeMillis();System.out.println("convert pdf2jpg completed, elapsed ：" + ((now - old) / 1000.0) + "秒");//删除临时文件for (File f : fileList) {if (f.exists()) {f.delete();}}} catch (Exception e) {e.printStackTrace();}}/*** 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RGBint[] ImageArrayOne = new int[w1 * h1];// 逐行扫描图像中各个像素的RGB到数组中ImageArrayOne = img.getRGB(0, 0, w1, h1, ImageArrayOne, 0, w1);if (isHorizontal) {// 水平方向合并// 设置上半部分或左半部分的RGBdestImage.setRGB(wx, 0, w1, h1, ImageArrayOne, 0, w1);} else {// 垂直方向合并// 设置上半部分或左半部分的RGBdestImage.setRGB(0, wy, w1, h1, ImageArrayOne, 0, w1);}wx += w1;wy += h1 + 5;}return destImage;}/*** pfd转图片** @param pdf源文件全路径* @param outPath 转后的文件夹路径*/public static void pdfToImage(String pdf, String outPath) {// 验证Licenseif (!getLicense()) {return;}try {long old = System.currentTimeMillis();System.out.println("convert pdf2png begin");Document pdfDocument = new Document(pdf);//图片宽度：800//图片高度：100// 分辨率 960//Quality [0-100] 最大100//例： new JpegDevice(800, 1000, resolution, 90);Resolution resolution = new Resolution(960);// JpegDevice jpegDevice = new JpegDevice(resolution);PngDevice pngDevice = new PngDevice(resolution);for (int index = 1; index <= pdfDocument.getPages().size(); index++) {// 输出路径File file = new File(outPath + "/" + index + ".png");FileOutputStream fileOs = new FileOutputStream(file);//jpegDevice.process(pdfDocument.getPages().get_Item(index), fileOs);pngDevice.process(pdfDocument.getPages().get_Item(index), fileOs);fileOs.close();}long now = System.currentTimeMillis();System.out.println("convert pdf2png completed, elapsed ：" + ((now - old) / 1000.0) + "秒");} catch (Exception e) {e.printStackTrace();}}/*** @param page要添加水印的页面* @param imageFile 水印图片路径*/public static void AddImageWatermark(PdfPageBase page, String imageFile) {page.setBackgroundImage(imageFile);Rectangle2D rect = new Rectangle2D.Float();rect.setFrame(page.getClientSize().getWidth() / 2 - 100, page.getClientSize().getHeight() / 2 - 100, 200, 200);page.setBackgroundRegion(rect);}/*** @param page要添加水印的页面* @param textWatermark 水印文字*/public static void AddTextWatermark(PdfPageBase page, String textWatermark) {Dimension2D dimension2D = new Dimension();dimension2D.setSize(page.getCanvas().getClientSize().getWidth() / 3, page.getCanvas().getClientSize().getHeight() / 3);PdfTilingBrush brush = new PdfTilingBrush(dimension2D);brush.getGraphics().setTransparency(0.3F);brush.getGraphics().save();brush.getGraphics().translateTransform((float) brush.getSize().getWidth() / 2, (float) brush.getSize().getHeight() / 2);brush.getGraphics().rotateTransform(-45);brush.getGraphics().drawString(textWatermark, new PdfTrueTypeFont(new Font("新宋体", Font.PLAIN, 30), true), PdfBrushes.getGray(), 0, 0, new PdfStringFormat(PdfTextAlignment.Center));brush.getGraphics().restore();brush.getGraphics().setTransparency(1);Rectangle2D loRect = new Rectangle2D.Float();loRect.setFrame(new Point2D.Float(0, 0), page.getCanvas().getClientSize());page.getCanvas().drawRectangle(brush, loRect);}/*** @param sourceFile 需要重新重命名的图片路径* @param targetPath 重命名的图片路径保存地址*/public static void fileCopyRightWay(String sourceFile, String targetPath) {try {//读取源地址文件的字节流FileInputStream in = new FileInputStream(sourceFile);FileOutputStream out = new FileOutputStream(targetPath);byte[] bs = new byte[1026];int count = 0;while ((count = in.read(bs, 0, bs.length)) != -1) {//把读取到的字节流写入到目的地址的文件里面out.write(bs, 0, count);}//刷新下输出流out.flush();// 关闭输入流和输出流out.close();out.close();} catch (FileNotFoundException e) {e.printStackTrace();} catch (IOException e) {e.printStackTrace();}}/*** 添加水印** @param filepath [文件路径]* @param data[水印文字内容]*/public static void addWatermark(String filepath, String data) {Document pdfDocument = new Document(filepath);TextStamp textStamp = new TextStamp(data);textStamp.setBackground(true);textStamp.setXIndent(100);textStamp.setYIndent(100);textStamp.setRotateAngle(50);textStamp.getTextState().setFont(FontRepository.findFont("Arial"));textStamp.getTextState().setFontSize(34.0F);textStamp.getTextState().setFontStyle(FontStyles.Italic);// textStamp.getTextState().setForegroundColor(Color.getLightGray());TextStamp textStamp1 = new TextStamp(data);textStamp1.setBackground(true);textStamp1.setXIndent(300);//设置位置textStamp1.setYIndent(300);textStamp1.setRotateAngle(50);//设置旋转角度textStamp1.getTextState().setFont(FontRepository.findFont("Arial"));textStamp1.getTextState().setFontSize(34.0F);//设置字体大小textStamp1.getTextState().setFontStyle(FontStyles.Italic);// textStamp1.getTextState().setForegroundColor(Color.LIGHT_GRAY);//设置字体颜色TextStamp textStamp2 = new TextStamp(data);textStamp2.setBackground(true);textStamp2.setXIndent(500);textStamp2.setYIndent(500);textStamp2.setRotateAngle(50);textStamp2.getTextState().setFont(FontRepository.findFont("Arial"));textStamp2.getTextState().setFontSize(34.0F);textStamp2.getTextState().setFontStyle(FontStyles.Italic);// textStamp2.getTextState().setForegroundColor(Color.getLightGray());PageCollection pages = pdfDocument.getPages();int size = pages.size();for (int i = 1; i <= size; i++) {pages.get_Item(i).addStamp(textStamp);pages.get_Item(i).addStamp(textStamp1);pages.get_Item(i).addStamp(textStamp2);}pdfDocument.save(filepath);}public static void addWatermarkWYH(String filepath, String data) {Document pdfDocument = new Document(filepath);TextStamp textStamp = new TextStamp(data);//背景(好像没用)textStamp.setBackground(true);//x坐标 可以通过xy坐标来定义水印的具体位置textStamp.setXIndent(100);//y坐标textStamp.setYIndent(10);//通过以下属性控制水印的样式 字体 大小 颜色等//旋转角度textStamp.setRotateAngle(0);//字体类型textStamp.getTextState().setFont(FontRepository.findFont("Arial"));//字体大小textStamp.getTextState().setFontSize(20.0F);//字体样式textStamp.getTextState().setFontStyle(FontStyles.Italic);//字体颜色textStamp.getTextState().setForegroundColor(com.aspose.pdf.Color.fromRgb(Color.yellow));TextStamp textStamp1 = new TextStamp(data);textStamp1.setBackground(true);textStamp1.setXIndent(200);//设置位置textStamp1.setYIndent(10);textStamp1.setRotateAngle(0);//设置旋转角度textStamp1.getTextState().setFont(FontRepository.findFont("Arial"));textStamp1.getTextState().setFontSize(30.0F);//设置字体大小textStamp1.getTextState().setFontStyle(FontStyles.Italic);textStamp1.getTextState().setForegroundColor(com.aspose.pdf.Color.fromRgb(Color.green));TextStamp textStamp2 = new TextStamp(data);textStamp2.setBackground(true);textStamp2.setXIndent(300);textStamp2.setYIndent(10);textStamp2.setRotateAngle(0);textStamp2.getTextState().setFont(FontRepository.findFont("Arial"));textStamp2.getTextState().setFontSize(40.0F);textStamp2.getTextState().setFontStyle(FontStyles.Italic);textStamp2.getTextState().setForegroundColor(com.aspose.pdf.Color.fromRgb(Color.red));PageCollection pages = pdfDocument.getPages();System.out.println(pages);int size = pages.size();for (int i = 1; i <= size; i++) {//如果只想要一个水印 只添加一个即可pages.get_Item(i).addStamp(textStamp);pages.get_Item(i).addStamp(textStamp1);pages.get_Item(i).addStamp(textStamp2);}pdfDocument.save(filepath);}//word->pdfpublic static boolean docToPdf(String inPath, String outPath) {if (!getLicense()) {// 验证License 若不验证则转化出的pdf文档会有水印产生return false;}FileOutputStream os = null;try {long old = System.currentTimeMillis();File file = new File(outPath); // 新建一个空白pdf文档os = new FileOutputStream(file);Document doc = new Document(inPath); // Address是将要被转化的word文档doc.save(os, SaveFormat.PDF);// 全面支持DOC, DOCX, OOXML, RTF HTML, OpenDocument, PDF,// EPUB, XPS, SWF 相互转换long now = System.currentTimeMillis();System.out.println("pdf转换成功，共耗时：" + ((now - old) / 1000.0) + "秒"); // 转化用时} catch (Exception e) {e.printStackTrace();return false;}finally {if (os != null) {try {os.flush();os.close();} catch (IOException e) {e.printStackTrace();}}}return true;}}
