文件格式转换工具

/****************************************************
* 创建人：
@author hechengcheng
* 创建时间: 2020年12月18日/上午9:42:13
* 项目名称：
WaterMarkProject
* 文件名称: PdfConvertUtil.java
* 文件描述: @Description: TODO(用一句话描述该文件做什么)
*
* All rights Reserved, Designed By 投资交易团队
* @Copyright:2016-2020
*
********************************************************/
package com.win.dfas.file.util;
import com.aspose.cells.PdfSaveOptions;
import com.aspose.cells.Workbook;
import com.aspose.words.SaveFormat;
import com.itextpdf.text.Document;
import com.itextpdf.text.Image;
import com.itextpdf.text.*;
import com.itextpdf.text.pdf.*;
import org.apache.poi.hslf.usermodel.*;
import org.apache.poi.xslf.usermodel.*;
import java.awt.*;
import java.awt.Color;
import java.awt.image.BufferedImage;
import java.io.*;
import java.util.List;
/**
* 包名称： com.csloser.topdf
* 类名称：PdfConvertUtil
* 类描述：转为为PDF工具类
* 创建人：@author hechengcheng
* 创建时间：2020年12月18日/上午9:42:13
*
*/
public final class PdfConvertUtil {
/**
* @param inputStream
源文件输入流
* @param outputStream pdf文件输出流
* @return
* @throws
* @Title: imgToPdf
* @Description: 图片转换为PDF文件
* @return: boolean
* @author: hechengcheng
* @Date: 2020年12月18日/上午9:44:34
*/
public static boolean imgToPdf(InputStream inputStream, OutputStream outputStream) {
Document document = null;
try {
// 创建文档
document = new Document(PageSize.A4, 20, 20, 20, 20);
PdfWriter.getInstance(document, outputStream);
document.open();
document.newPage();
// 将文件流转换为字节流，便于格式转换
BufferedInputStream bufferedInputStream = new BufferedInputStream(inputStream);
ByteArrayOutputStream byteArrayOutputStream = new ByteArrayOutputStream();
byte[] bytes = new byte[1024];
int length = 0;
while (-1 != (length = bufferedInputStream.read(bytes))) {
byteArrayOutputStream.write(bytes, 0, length);
}
Image image = Image.getInstance(byteArrayOutputStream.toByteArray());
float height = image.getHeight();
float width = image.getWidth();
float percent = 0.0f;
if (height > width) {
percent = PageSize.A4.getHeight() / height * 100;
} else {
percent = PageSize.A4.getWidth() / width * 100;
}
image.setAlignment(Image.MIDDLE);
image.scalePercent(percent);
document.add(image);
} catch (Exception e) {
e.printStackTrace();
return false;
} finally {
try {
if (document != null) {
document.close();
}
} catch (Exception e) {
e.printStackTrace();
}
}
return true;
}
/**
* @param inputStream
源文件输入流
* @param outputStream pdf文件输出流
* @return
* @throws
* @Title: wordToPdf
* @Description: word转换为PDF文件
* @return: boolean
* @author: hechengcheng
* @Date: 2020年12月18日/上午9:44:34
*/
public static boolean wordTopdfByAspose(InputStream inputStream, OutputStream outputStream) {
// 验证License 若不验证则转化出的pdf文档会有水印产生
if (!getWordLicense()) {
return false;
}
try {
// Address是将要被转化的word文档
com.aspose.words.Document doc = new com.aspose.words.Document(inputStream);
// 全面支持DOC, DOCX, OOXML, RTF HTML, OpenDocument, PDF,EPUB, XPS, SWF 相互转换
doc.save(outputStream, SaveFormat.PDF);
} catch (Exception e) {
e.printStackTrace();
return false;
} finally {
if (outputStream != null) {
try {
outputStream.flush();
outputStream.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}
return true;
}
public static boolean getWordLicense() {
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 is = new ByteArrayInputStream(s.getBytes());
com.aspose.words.License aposeLic = new com.aspose.words.License();
aposeLic.setLicense(is);
result = true;
} catch (Exception e) {
e.printStackTrace();
}
return result;
}
public static boolean getExeclLicense() {
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 is = new ByteArrayInputStream(s.getBytes());
com.aspose.cells.License aposeLic = new com.aspose.cells.License();
aposeLic.setLicense(is);
result = true;
} catch (Exception e) {
e.printStackTrace();
}
return result;
}
/**
* @Title: pptToPdf
* @Description: ppt格式转换pdf
* @param inputStream
* @param outputStream
* @return:
* @throws
* @author: zhouyangyang
* @Date:
2021/4/2
9:49
*/
public static boolean pptToPdf(InputStream inputStream, OutputStream outputStream) {
Document document = null;
HSLFSlideShow hslfSlideShow = null;
PdfWriter pdfWriter = null;
try {
hslfSlideShow = new HSLFSlideShow(inputStream);
Dimension dimension = hslfSlideShow.getPageSize();
document = new Document();
pdfWriter = PdfWriter.getInstance(document, outputStream);
document.open();
PdfPTable pdfPTable = new PdfPTable(1);
List<HSLFSlide> hslfSlideList = hslfSlideShow.getSlides();
for (int i=0; i < hslfSlideList.size(); i++) {
HSLFSlide hslfSlide = hslfSlideList.get(i);
// 设置字体, 解决中文乱码
for (HSLFShape shape : hslfSlide.getShapes()) {
HSLFTextShape textShape = (HSLFTextShape) shape;
for (HSLFTextParagraph textParagraph : textShape.getTextParagraphs()) {
for (HSLFTextRun textRun : textParagraph.getTextRuns()) {
textRun.setFontFamily("宋体");
}
}
}
BufferedImage bufferedImage = new BufferedImage((int)dimension.getWidth(), (int)dimension.getHeight(), BufferedImage.TYPE_INT_RGB);
Graphics2D graphics2d = bufferedImage.createGraphics();
graphics2d.setPaint(Color.white);
graphics2d.setFont(new java.awt.Font("宋体", java.awt.Font.PLAIN, 12));
hslfSlide.draw(graphics2d);
graphics2d.dispose();
Image image = Image.getInstance(bufferedImage, null);
image.scalePercent(50f);
// 写入单元格
pdfPTable.addCell(new PdfPCell(image, true));
document.add(image);
}
} catch (Exception e) {
e.printStackTrace();
return false;
} finally {
try {
if (document != null) {
document.close();
}
if (pdfWriter != null) {
pdfWriter.close();
}
} catch (Exception e) {
e.printStackTrace();
}
}
return true;
}
/**
* @param inputStream
源文件输入流
* @param outputStream pdf文件输出流
* @return
* @throws
* @Title: pptToPdf
* @Description: PPT转为PDF文件
* @return: boolean
* @author: hechengcheng
* @Date: 2020年12月18日/下午3:17:28
*/
public static boolean pptxToPdf(InputStream inputStream, OutputStream outputStream) {
Document document = null;
XMLSlideShow slideShow = null;
PdfWriter pdfWriter = null;
try {
slideShow = new XMLSlideShow(inputStream);
Dimension dimension = slideShow.getPageSize();
document = new Document();
pdfWriter = PdfWriter.getInstance(document, outputStream);
document.open();
PdfPTable pdfPTable = new PdfPTable(1);
List<XSLFSlide> slideList = slideShow.getSlides();
for (int i = 0, row = slideList.size(); i < row; i++) {
XSLFSlide slide = slideList.get(i);
// 设置字体, 解决中文乱码
for (XSLFShape shape : slide.getShapes()) {
XSLFTextShape textShape = (XSLFTextShape) shape;
for (XSLFTextParagraph textParagraph : textShape.getTextParagraphs()) {
for (XSLFTextRun textRun : textParagraph.getTextRuns()) {
textRun.setFontFamily("宋体");
}
}
}
BufferedImage bufferedImage = new BufferedImage((int) dimension.getWidth(), (int) dimension.getHeight(), BufferedImage.TYPE_INT_RGB);
Graphics2D graphics2d = bufferedImage.createGraphics();
graphics2d.setPaint(Color.white);
graphics2d.setFont(new java.awt.Font("宋体", java.awt.Font.PLAIN, 12));
slide.draw(graphics2d);
graphics2d.dispose();
Image image = Image.getInstance(bufferedImage, null);
image.scalePercent(50f);
// 写入单元格
pdfPTable.addCell(new PdfPCell(image, true));
document.add(image);
}
} catch (Exception e) {
e.printStackTrace();
return false;
} finally {
try {
if (document != null) {
document.close();
}
if (pdfWriter != null) {
pdfWriter.close();
}
} catch (Exception e) {
e.printStackTrace();
}
}
return true;
}
/**
* @Title: excelToPdf
* @Description: excel转PDf
* @param inputStream 源文件输出流
* @param outputStream PDF文件输出流
* @return: boolean
* @throws
* @author: pengyangxuan
* @Date:
2021/04/02/13:52
*/
public static boolean excelToPdf(InputStream inputStream, OutputStream outputStream) {
// 验证License 若不验证则转化出的pdf文档会有水印产生
if (!getExeclLicense()) {
return false;
}
try {
Workbook wb = new Workbook(inputStream);// 原始excel路径
PdfSaveOptions pdfSaveOptions = new PdfSaveOptions();
pdfSaveOptions.setOnePagePerSheet(false);
int[] autoDrawSheets={3};
//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。
autoDraw(wb,autoDrawSheets);
int[] showSheets={0};
//隐藏workbook中不需要的sheet页。
printSheetPage(wb,showSheets);
wb.save(outputStream, pdfSaveOptions);
outputStream.flush();
outputStream.close();
System.out.println("完毕");
} catch (IOException e) {
e.printStackTrace();
} catch (Exception e) {
e.printStackTrace();
}
return true;
}
/**
* 设置打印的sheet 自动拉伸比例
* @param wb
* @param page 自动拉伸的页的sheet数组
*/
public static void autoDraw(Workbook wb,int[] page){
if(null!=page&&page.length>0){
for (int i = 0; i < page.length; i++) {
wb.getWorksheets().get(i).getHorizontalPageBreaks().clear();
wb.getWorksheets().get(i).getVerticalPageBreaks().clear();
}
}
}
/**
* 隐藏workbook中不需要的sheet页。
*
* @param wb
* @param page 显示页的sheet数组
*/
public static void printSheetPage(Workbook wb, int[] page) {
for (int i = 1; i < wb.getWorksheets().getCount(); i++) {
wb.getWorksheets().get(i).setVisible(false);
}
if (null == page || page.length == 0) {
wb.getWorksheets().get(0).setVisible(true);
} else {
for (int i = 0; i < page.length; i++) {
wb.getWorksheets().get(i).setVisible(true);
}
}
}
}

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