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package util.convertPDF;
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import com.aspose.words.License;
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import com.aspose.words.SaveFormat;
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import com.itextpdf.text.Document;
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import com.itextpdf.text.Image;
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import com.itextpdf.text.PageSize;
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import com.itextpdf.text.pdf.PdfPCell;
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import com.itextpdf.text.pdf.PdfPTable;
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import com.itextpdf.text.pdf.PdfWriter;
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import org.apache.poi.hslf.usermodel.*;
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import org.apache.poi.xslf.usermodel.*;
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import java.awt.*;
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import java.awt.image.BufferedImage;
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import java.io.*;
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import java.util.Arrays;
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import java.util.HashMap;
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import java.util.List;
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import java.util.Map;
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import static util.convertPDF.PDFConverUtil.TypeEnum.*;
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/**
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* 功能描述: <br>
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* PDF 转换工具
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*
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* @Author: lx
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* @Date: 2022/12/13 16:26
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*/
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public final class PDFConverUtil {
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final private static Map<TypeEnum, List<String>> types = new HashMap<>();
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public static enum TypeEnum {
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WORD, EXCEL, PPT, PPTX, OTHER
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}
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static {
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types.put(WORD, Arrays.asList("DOC", "DOCX"));
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types.put(EXCEL, Arrays.asList("XLS", "XLSX"));
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types.put(PPT, Arrays.asList("PPT"));
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types.put(PPTX, Arrays.asList("PPTX"));
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types.put(OTHER, Arrays.asList("OOXML", "RTF HTML", "OpenDocument", "PDF","EPUB", "XPS", "SWF"));
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}
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/**
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* @param inputStream 源文件输入流
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* @param outputStream pdf文件输出流
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**/
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public static boolean imgToPdf(InputStream inputStream, OutputStream outputStream) {
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Document document = null;
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try {
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// 创建文档,设置PDF页面的大小 A2-A9, 个人觉得A3最合适
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document = new Document(PageSize.A6, 20, 20, 20, 20);
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// 新建pdf文档,具体逻辑看.getInstance方法
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PdfWriter.getInstance(document, outputStream);
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document.open();
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document.newPage();
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// 将文件流转换为字节流，便于格式转换
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BufferedInputStream bufferedInputStream = new BufferedInputStream(inputStream);
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ByteArrayOutputStream byteArrayOutputStream = new ByteArrayOutputStream();
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byte[] bytes = new byte[1024];
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int length = 0 ;
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while (-1 != (length = bufferedInputStream.read(bytes))) {
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byteArrayOutputStream.write(bytes, 0, length);
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}
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// 处理img图片
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Image image = Image.getInstance(byteArrayOutputStream.toByteArray());
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float height = image.getHeight();
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float width = image.getWidth();
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float percent = 0.0f;
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// 设置像素或者长宽高,将会影响图片的清晰度，因为只是对图片放大或缩小
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if (height > width) {
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// A4 - A9
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percent = PageSize.A6.getHeight() / height * 100;
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} else {
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percent = PageSize.A6.getWidth() / width * 100;
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}
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image.setAlignment(Image.MIDDLE);
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image.scalePercent(percent);
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// 将图片放入文档中，完成pdf转换
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document.add(image);
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System.out.println("image转换完毕");
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} catch (Exception e) {
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e.printStackTrace();
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return false;
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} finally {
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closeOutput(outputStream);
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closeInput(inputStream);
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}
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return true;
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}
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/**
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* @param inputStream 源文件输入流
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* @param outputStream pdf文件输出流
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**/
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public static boolean wordToPdfByAspose(InputStream inputStream, OutputStream outputStream) {
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// 验证License 若不验证则转化出的pdf文档会有水印产生
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if (!getLicense()) {
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return false;
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}
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try {
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// 将源文件保存在com.aspose.words.Document中，具体的转换格式依靠里面的save方法
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com.aspose.words.Document doc = new com.aspose.words.Document(inputStream);
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// 全面支持DOC, DOCX, OOXML, RTF HTML, OpenDocument, PDF,EPUB, XPS, SWF 相互转换
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doc.save(outputStream, SaveFormat.PDF);
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System.out.println("word转换完毕");
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} catch (Exception e) {
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e.printStackTrace();
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return false;
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}finally {
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closeOutput(outputStream);
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closeInput(inputStream);
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}
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return true;
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}
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/**
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* 关闭输出流
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* @param outputStream
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*/
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private static void closeOutput(OutputStream outputStream) {
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if (outputStream != null) {
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try {
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outputStream.flush();
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outputStream.close();
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} catch (IOException e) {
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e.printStackTrace();
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}
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}
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}
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/**
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* 关闭输出流
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* @param inputStream
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*/
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private static void closeInput(InputStream inputStream) {
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if (inputStream != null) {
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try {
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inputStream.close();
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} catch (IOException e) {
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e.printStackTrace();
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}
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}
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}
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private static void close(Document document, PdfWriter pdfWriter) {
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if (document != null) {
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document.close();
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}
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if (pdfWriter != null) {
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pdfWriter.close();
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}
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}
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// 官方文档的要求 无需理会
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public static boolean getLicense() {
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boolean result = false;
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try {
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String s = "<License>\n" +
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" <Data>\n" +
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" <Products>\n" +
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" <Product>Aspose.Total for Java</Product>\n" +
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" <Product>Aspose.Words for Java</Product>\n" +
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" </Products>\n" +
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" <EditionType>Enterprise</EditionType>\n" +
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" <SubscriptionExpiry>20991231</SubscriptionExpiry>\n" +
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" <LicenseExpiry>20991231</LicenseExpiry>\n" +
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" <SerialNumber>8bfe198c-7f0c-4ef8-8ff0-acc3237bf0d7</SerialNumber>\n" +
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" </Data>\n" +
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" <Signature>sNLLKGMUdF0r8O1kKilWAGdgfs2BvJb/2Xp8p5iuDVfZXmhppo+d0Ran1P9TKdjV4ABwAgKXxJ3jcQTqE/2IRfqwnPf8itN8aFZlV3TJPYeD3yWE7IT55Gz6EijUpC7aKeoohTb4w2fpox58wWoF3SNp6sK6jDfiAUGEHYJ9pjU=</Signature>\n" +
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"</License>";
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ByteArrayInputStream is = new ByteArrayInputStream(s.getBytes());
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License aposeLic = new License();
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aposeLic.setLicense(is);
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result = true;
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} catch (Exception e) {
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e.printStackTrace();
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}
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return result;
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}
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/**
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* @param inputStream 源文件输入流
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* @param outputStream pdf文件输出流
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**/
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public static boolean excelToPdf(InputStream inputStream, OutputStream outputStream) {
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// 验证License 若不验证则转化出的pdf文档会有水印产生
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if (!getExcelLicense()) {
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return false;
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}
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try {
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// 原始excel路径
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com.aspose.cells.Workbook wb = new com.aspose.cells.Workbook(inputStream);
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com.aspose.cells.PdfSaveOptions pdfSaveOptions = new com.aspose.cells.PdfSaveOptions();
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pdfSaveOptions.setOnePagePerSheet(false);
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int[] autoDrawSheets={3};
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//当excel中对应的sheet页宽度太大时，在PDF中会拆断并分页。此处等比缩放。
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autoDraw(wb,autoDrawSheets);
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int[] showSheets={0};
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//隐藏workbook中不需要的sheet页。
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printSheetPage(wb,showSheets);
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wb.save(outputStream, pdfSaveOptions);
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System.out.println("excel转换完毕");
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} catch (IOException e) {
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e.printStackTrace();
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} catch (Exception e) {
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e.printStackTrace();
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}finally {
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closeOutput(outputStream);
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closeInput(inputStream);
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}
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return true;
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}
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/**
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* 设置打印的sheet 自动拉伸比例
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* @param wb
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* @param page 自动拉伸的页的sheet数组
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*/
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public static void autoDraw(com.aspose.cells.Workbook wb,int[] page){
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if(null!=page&&page.length>0){
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for (int i = 0; i < page.length; i++) {
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wb.getWorksheets().get(i).getHorizontalPageBreaks().clear();
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wb.getWorksheets().get(i).getVerticalPageBreaks().clear();
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}
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}
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}
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/**
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* 隐藏workbook中不需要的sheet页。
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*
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* @param wb
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* @param page 显示页的sheet数组
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*/
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public static void printSheetPage(com.aspose.cells.Workbook wb, int[] page) {
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for (int i = 1; i < wb.getWorksheets().getCount(); i++) {
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wb.getWorksheets().get(i).setVisible(false);
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}
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if (null == page || page.length == 0) {
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wb.getWorksheets().get(0).setVisible(true);
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} else {
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for (int i = 0; i < page.length; i++) {
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wb.getWorksheets().get(i).setVisible(true);
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}
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}
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}
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public static boolean getExcelLicense() {
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boolean result = false;
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try {
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String s = "<License>\n" +
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" <Data>\n" +
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" <Products>\n" +
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" <Product>Aspose.Cells for Java</Product>\n" +
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" </Products>\n" +
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" <EditionType>Enterprise</EditionType>\n" +
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" <SubscriptionExpiry>29991231</SubscriptionExpiry>\n" +
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" <LicenseExpiry>29991231</LicenseExpiry>\n" +
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" <SerialNumber>evilrule</SerialNumber>\n" +
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" </Data>\n" +
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" <Signature>evilrule</Signature>\n" +
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"</License>";
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ByteArrayInputStream is = new ByteArrayInputStream(s.getBytes());
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com.aspose.cells.License aposeLic = new com.aspose.cells.License();
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aposeLic.setLicense(is);
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result = true;
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} catch (Exception e) {
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e.printStackTrace();
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}
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return result;
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}
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/**
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* pptToPdf
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* @param inputStream
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* @param outputStream
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* @return
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*/
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public static boolean pptToPdf(InputStream inputStream, OutputStream outputStream) {
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Document document = null;
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HSLFSlideShow hslfSlideShow = null;
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PdfWriter pdfWriter = null;
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try {
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hslfSlideShow = new HSLFSlideShow(inputStream);
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// 获取ppt文件页面
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Dimension dimension = hslfSlideShow.getPageSize();
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document = new Document();
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// pdfWriter实例
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pdfWriter = PdfWriter.getInstance(document, outputStream);
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document.open();
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PdfPTable pdfPTable = new PdfPTable(1);
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List<HSLFSlide> hslfSlideList = hslfSlideShow.getSlides();
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for (int i=0; i < hslfSlideList.size(); i++) {
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HSLFSlide hslfSlide = hslfSlideList.get(i);
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// 设置字体, 解决中文乱码
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for (HSLFShape shape : hslfSlide.getShapes()) {
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if (shape instanceof HSLFTextShape) {
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HSLFTextShape textShape = (HSLFTextShape) shape;
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for (HSLFTextParagraph textParagraph : textShape.getTextParagraphs()) {
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for (HSLFTextRun textRun : textParagraph.getTextRuns()) {
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textRun.setFontFamily("宋体");
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}
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}
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}
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}
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BufferedImage bufferedImage = new BufferedImage((int)dimension.getWidth(), (int)dimension.getHeight(), BufferedImage.TYPE_INT_RGB);
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Graphics2D graphics2d = bufferedImage.createGraphics();
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graphics2d.setPaint(Color.white);
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graphics2d.setFont(new java.awt.Font("宋体", java.awt.Font.PLAIN, 12));
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hslfSlide.draw(graphics2d);
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graphics2d.dispose();
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Image image = Image.getInstance(bufferedImage, null);
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image.scalePercent(50f);
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// 写入单元格
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pdfPTable.addCell(new PdfPCell(image, true));
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document.add(image);
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}
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} catch (Exception e) {
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e.printStackTrace();
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return false;
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} finally {
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close(document, pdfWriter);
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closeOutput(outputStream);
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closeInput(inputStream);
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}
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System.out.println("ppt转换完毕");
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return true;
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}
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/**
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* pptxToPdf
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* @param inputStream
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* @param outputStream
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* @return
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*/
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public static boolean pptxToPdf(InputStream inputStream, OutputStream outputStream) {
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Document document = null;
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XMLSlideShow slideShow = null;
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PdfWriter pdfWriter = null;
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try {
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slideShow = new XMLSlideShow(inputStream);
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Dimension dimension = slideShow.getPageSize();
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document = new Document();
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pdfWriter = PdfWriter.getInstance(document, outputStream);
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document.open();
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PdfPTable pdfPTable = new PdfPTable(1);
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List<XSLFSlide> slideList = slideShow.getSlides();
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for (int i = 0, row = slideList.size(); i < row; i++) {
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XSLFSlide slide = slideList.get(i);
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// 设置字体, 解决中文乱码
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for (XSLFShape shape : slide.getShapes()) {
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if (shape instanceof XSLFTextShape) {
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XSLFTextShape textShape = (XSLFTextShape) shape;
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for (XSLFTextParagraph textParagraph : textShape.getTextParagraphs()) {
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for (XSLFTextRun textRun : textParagraph.getTextRuns()) {
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textRun.setFontFamily("宋体");
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}
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}
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}
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}
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BufferedImage bufferedImage = new BufferedImage((int)dimension.getWidth(), (int)dimension.getHeight(), BufferedImage.TYPE_INT_RGB);
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Graphics2D graphics2d = bufferedImage.createGraphics();
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graphics2d.setPaint(Color.white);
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graphics2d.setFont(new java.awt.Font("宋体", java.awt.Font.PLAIN, 12));
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slide.draw(graphics2d);
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graphics2d.dispose();
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Image image = Image.getInstance(bufferedImage, null);
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image.scalePercent(50f);
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// 写入单元格
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pdfPTable.addCell(new PdfPCell(image, true));
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document.add(image);
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}
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} catch (Exception e) {
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e.printStackTrace();
|
|
|
return false;
|
|
|
} finally {
|
|
|
close(document, pdfWriter);
|
|
|
closeOutput(outputStream);
|
|
|
closeInput(inputStream);
|
|
|
}
|
|
|
System.out.println("pptx转换完毕");
|
|
|
return true;
|
|
|
}
|
|
|
|
|
|
/**
|
|
|
* 功能描述: <br>
|
|
|
* 通过文件名后缀来进行转换
|
|
|
*
|
|
|
* @return {@link boolean}
|
|
|
* @Author: lx
|
|
|
* @Date: 2022/12/13 16:37
|
|
|
*/
|
|
|
public static boolean convertToPDFByFileNameSuffix(String fileName, InputStream inputStream, OutputStream outputStream) {
|
|
|
|
|
|
String fileSuffix = getFileSuffix(fileName).toUpperCase();
|
|
|
|
|
|
if (types.get(WORD).contains(fileSuffix)) {
|
|
|
return wordToPdfByAspose(inputStream, outputStream);
|
|
|
}
|
|
|
if (types.get(EXCEL).contains(fileSuffix)) {
|
|
|
return excelToPdf(inputStream, outputStream);
|
|
|
}
|
|
|
if (types.get(PPT).contains(fileSuffix)) {
|
|
|
return pptToPdf(inputStream, outputStream);
|
|
|
}
|
|
|
if (types.get(PPTX).contains(fileSuffix)) {
|
|
|
return pptxToPdf(inputStream, outputStream);
|
|
|
}
|
|
|
if (types.get(OTHER).contains(fileSuffix)) {
|
|
|
return wordToPdfByAspose(inputStream, outputStream);
|
|
|
}
|
|
|
return false;
|
|
|
}
|
|
|
|
|
|
/**
|
|
|
* 功能描述: <br>
|
|
|
* 取文件名后缀
|
|
|
*
|
|
|
* @param fileName
|
|
|
* @return {@link String}
|
|
|
* @Author: lx
|
|
|
* @Date: 2022/12/13 21:51
|
|
|
*/
|
|
|
private static String getFileSuffix(String fileName) {
|
|
|
String[] split = fileName.split("\\.");
|
|
|
int length = split.length;
|
|
|
return split[length - 1];
|
|
|
}
|
|
|
} |