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beetlsql3-dev
Mlxa0324 2 years ago
parent aa22cd59ac
commit c24e33a3d7
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admin-framework/admin-convert-pdf/src/main/java/util/convertPDF/PDFConvertUtil.java
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package util.convertPDF;
import com.aspose.words.License;
import com.aspose.words.SaveFormat;
import com.itextpdf.text.Document;
import com.itextpdf.text.Image;
import com.itextpdf.text.PageSize;
import com.itextpdf.text.pdf.PdfPCell;
import com.itextpdf.text.pdf.PdfPTable;
import com.itextpdf.text.pdf.PdfWriter;
import org.apache.poi.hslf.usermodel.*;
import org.apache.poi.xslf.usermodel.*;
import java.awt.*;
import java.awt.image.BufferedImage;
import java.io.*;
import java.util.Arrays;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import static util.convertPDF.PDFConvertUtil.TypeEnum.*;
/**
* 功能描述: <br>
* PDF 转换工具
*
* @Author: lx
* @Date: 2022/12/13 16:26
*/
public final class PDFConvertUtil {
final private static Map<TypeEnum, List<String>> types = new HashMap<>();
public static enum TypeEnum {
WORD, EXCEL, PPT, PPTX, IMG, OTHER
}
static {
types.put(WORD, Arrays.asList("DOC", "DOCX"));
types.put(EXCEL, Arrays.asList("XLS", "XLSX"));
types.put(PPT, Arrays.asList("PPT"));
types.put(PPTX, Arrays.asList("PPTX"));
// types.put(IMG, Arrays.asList("JPEG", "JPG", "PNG"));
types.put(OTHER, Arrays.asList("OOXML", "RTF HTML", "OpenDocument", "EPUB", "XPS", "SWF"));
}
/**
* @param inputStream 源文件输入流
* @param outputStream pdf文件输出流
**/
public static boolean imgToPdf(InputStream inputStream, OutputStream outputStream) {
Document document = null; PdfWriter pdfWriter = null;
try {
// 创建文档,设置PDF页面的大小 A2-A9, 个人觉得A3最合适
document = new Document(PageSize.A6, 0, 0, 0, 0);
// 新建pdf文档,具体逻辑看.getInstance方法
pdfWriter = 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);
}
// 处理img图片
Image image = Image.getInstance(byteArrayOutputStream.toByteArray());
float height = image.getHeight();
float width = image.getWidth();
float percent = 0.0f;
// 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
if (height > width) {
// A4 - A9
percent = PageSize.A6.getHeight() / height * 100;
} else {
percent = PageSize.A6.getWidth() / width * 100;
}
image.setAlignment(Image.MIDDLE);
image.scalePercent(percent);
// 将图片放入文档中，完成pdf转换
document.add(image);
System.out.println("image转换完毕");
} catch (Exception e) {
e.printStackTrace();
return false;
} finally {
close(document, pdfWriter);
closeOutput(outputStream);
closeInput(inputStream);
}
return true;
}
/**
* @param inputStream 源文件输入流
* @param outputStream pdf文件输出流
**/
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 (!getLicense()) {
return false;
}
try {
// 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
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);
System.out.println("word转换完毕");
} catch (Exception e) {
e.printStackTrace();
return false;
}finally {
closeOutput(outputStream);
closeInput(inputStream);
}
return true;
}
/**
* 关闭输出流
* @param outputStream
*/
private static void closeOutput(OutputStream outputStream) {
if (outputStream != null) {
try {
outputStream.flush();
outputStream.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}
/**
* 关闭输出流
* @param inputStream
*/
private static void closeInput(InputStream inputStream) {
if (inputStream != null) {
try {
inputStream.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}
private static void close(Document document, PdfWriter pdfWriter) {
if (document != null) {
document.close();
}
if (pdfWriter != null) {
pdfWriter.close();
}
}
// 官方文档的要求 无需理会
public static boolean getLicense() {
boolean result = false;
try {
String s = "<License>\n" +
" <Data>\n" +
" <Products>\n" +
" <Product>Aspose.Total for Java</Product>\n" +
" <Product>Aspose.Words for Java</Product>\n" +
" </Products>\n" +
" <EditionType>Enterprise</EditionType>\n" +
" <SubscriptionExpiry>20991231</SubscriptionExpiry>\n" +
" <LicenseExpiry>20991231</LicenseExpiry>\n" +
" <SerialNumber>8bfe198c-7f0c-4ef8-8ff0-acc3237bf0d7</SerialNumber>\n" +
" </Data>\n" +
" <Signature>sNLLKGMUdF0r8O1kKilWAGdgfs2BvJb/2Xp8p5iuDVfZXmhppo+d0Ran1P9TKdjV4ABwAgKXxJ3jcQTqE/2IRfqwnPf8itN8aFZlV3TJPYeD3yWE7IT55Gz6EijUpC7aKeoohTb4w2fpox58wWoF3SNp6sK6jDfiAUGEHYJ9pjU=</Signature>\n" +
"</License>";
ByteArrayInputStream is = new ByteArrayInputStream(s.getBytes());
License aposeLic = new License();
aposeLic.setLicense(is);
result = true;
} catch (Exception e) {
e.printStackTrace();
}
return result;
}
/**
* @param inputStream 源文件输入流
* @param outputStream pdf文件输出流
**/
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 (!getExcelLicense()) {
return false;
}
try {
// 原始excel路径
com.aspose.cells.Workbook wb = new com.aspose.cells.Workbook(inputStream);
com.aspose.cells.PdfSaveOptions pdfSaveOptions = new com.aspose.cells.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);
System.out.println("excel转换完毕");
} catch (IOException e) {
e.printStackTrace();
} catch (Exception e) {
e.printStackTrace();
}finally {
closeOutput(outputStream);
closeInput(inputStream);
}
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(com.aspose.cells.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(com.aspose.cells.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);
}
}
}
public static boolean getExcelLicense() {
boolean result = false;
try {
String s = "<License>\n" +
" <Data>\n" +
" <Products>\n" +
" <Product>Aspose.Cells for Java</Product>\n" +
" </Products>\n" +
" <EditionType>Enterprise</EditionType>\n" +
" <SubscriptionExpiry>29991231</SubscriptionExpiry>\n" +
" <LicenseExpiry>29991231</LicenseExpiry>\n" +
" <SerialNumber>evilrule</SerialNumber>\n" +
" </Data>\n" +
" <Signature>evilrule</Signature>\n" +
"</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;
}
/**
* pptToPdf
* @param inputStream
* @param outputStream
* @return
*/
public static boolean pptToPdf(InputStream inputStream, OutputStream outputStream) {
Document document = null;
HSLFSlideShow hslfSlideShow = null;
PdfWriter pdfWriter = null;
try {
hslfSlideShow = new HSLFSlideShow(inputStream);
// 获取ppt文件页面
Dimension dimension = hslfSlideShow.getPageSize();
document = new Document();
// pdfWriter实例
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()) {
if (shape instanceof HSLFTextShape) {
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 {
close(document, pdfWriter);
closeOutput(outputStream);
closeInput(inputStream);
}
System.out.println("ppt转换完毕");
return true;
}
/**
* pptxToPdf
* @param inputStream
* @param outputStream
* @return
*/
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()) {
if (shape instanceof XSLFTextShape) {
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 {
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(IMG).contains(fileSuffix)) {
// return imgToPdf(inputStream, outputStream);
// }
if (types.get(OTHER).contains(fileSuffix)) {
return wordToPdfByAspose(inputStream, outputStream);
}
return false;
}
/**
* 判断是否可以生成PDF文件
* @param fileName
* @return
*/
public static boolean isCreatePdf(String fileName) {
return types.values().stream().anyMatch(item -> item.contains(getFileSuffix(fileName).toUpperCase()));
}
/**
* 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) {
if (!fileName.contains(".")) {
throw new RuntimeException("非法的文件名，文件名必须要有文件类型！");
}
String[] split = fileName.split("\\.");
return split[split.length - 1];
}
}
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