使用aspose把各种文件转换成pdf

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package com.fh.util;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import org.apache.pdfbox.pdmodel.PDDocument;
import com.aspose.cells.Workbook;
import com.aspose.slides.Presentation;
import com.aspose.words.Document;
import com.lowagie.text.DocumentException;
import com.lowagie.text.Image;
import com.lowagie.text.PageSize;
import com.lowagie.text.pdf.PdfWriter;
/**
* 
* 使用的aspose包把文档转换成pdf工具类
* @author dwm
*2019-07-03
*/
public class Word2Pdf {
public static void main(String[] args) {
//		excel2Pdf("F:\\aaa\\加班.xls","F:\\aaa\\加班.pdf") ;
}
/**
* 获取pdf文档的页数
* @param pdfFilePath
* @return
*/
public static int getPdfPage(String pdfFilePath){
try{
// 判断输入文件是否存在
File file = new File(pdfFilePath);  
if (!file.exists()) {  
return 0;  
}
// 如果不是pdf直接返回0
if (!FileUtil.getFileSufix(pdfFilePath).equals("pdf")) {  
return 0;  
}
PDDocument pdf = PDDocument.load(file);
return pdf.getPages().getCount();		//返回页数
}catch(Exception e){
e.printStackTrace();
return 0;
}
}
/**
* 使用aspose转换成pdf文件
* @param inputFile
* @param pdfFile
* @return
*/
public static boolean convertToPdfAsAspose(String inputFile, String pdfFile) {
String suffix = FileUtil.getFileSufix(inputFile); //后缀
File file = new File(inputFile) ;
if(!file.exists()) {
return false ;
}
if("pdf".equalsIgnoreCase(suffix)) {
return false ;
}
//根据不同的文件转换成pdf文件
if("doc".equalsIgnoreCase(suffix) || "docx".equalsIgnoreCase(suffix) || "txt".equalsIgnoreCase(suffix)) {
return doc2pdf(inputFile,pdfFile) ;
} else if("xls".equalsIgnoreCase(suffix) || "xlsx".equalsIgnoreCase(suffix)) {
return excel2Pdf(inputFile, pdfFile);
} else if("xls".equalsIgnoreCase(suffix) || "xlsx".equalsIgnoreCase(suffix)) {
return excel2Pdf(inputFile, pdfFile);
} else if (suffix.equalsIgnoreCase("png") || suffix.equalsIgnoreCase("jpg") 
|| suffix.equalsIgnoreCase("jpeg")) {  
return img2PDF(inputFile, pdfFile);  
} else {  
return false;  
}
}
/**
* aspose.word包获取配置
* @return
*/
public static boolean getWordLicense() {
boolean result = false;
InputStream is = null ;
try {
is = Word2Pdf.class.getClassLoader().getResourceAsStream("license.xml"); // license.xml应放在..\WebRoot\WEB-INF\classes路径下
com.aspose.words.License aposeLic = new com.aspose.words.License();
aposeLic.setLicense(is);
result = true;
is.close();
} catch (Exception e) {
if(is != null) {
try {
is.close() ;
} catch (IOException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
}
}
e.printStackTrace();
}
return result; 
}
/**
* word文档转pdf
* @param inPath
* @param outPath
*/
public static boolean doc2pdf(String inPath, String outPath) {
if (!getWordLicense()) { // 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, com.aspose.words.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("共耗时：" + ((now - old) / 1000.0) + "秒"); // 转化用时
os.close();
} catch (Exception e) {
if(os != null) {
try {
os.close();
} catch (IOException e1) {
e1.printStackTrace();
}
}
e.printStackTrace();
return false ;
}
return true ;
}
public static boolean getExcelLicense() {
boolean result = false;
InputStream is = null ;
try {
is = Word2Pdf.class.getClassLoader().getResourceAsStream("license.xml"); // license.xml应放在..\WebRoot\WEB-INF\classes路径下
com.aspose.cells.License aposeLic = new com.aspose.cells.License();
aposeLic.setLicense(is);
result = true;
is.close();
} catch (Exception e) {
if(is != null) {
try {
is.close() ;
} catch (IOException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
}
}
e.printStackTrace();
}
return result; 
}
/**
* asponse:excel转pdf
* @param excelPath
* @param pdfPath
*/
public static boolean excel2Pdf(String excelPath, String pdfPath) {
long old = System.currentTimeMillis();
// 验证License
if (!getExcelLicense()) {
return false;
}
FileInputStream fileInputStream = null;
FileOutputStream fileOutputStream = null;
try {
File excelFile = new File(excelPath);
if (excelFile.exists()) {
fileInputStream = new FileInputStream(excelFile);
Workbook workbook = new Workbook(fileInputStream);
File pdfFile = new File(pdfPath);
fileOutputStream = new FileOutputStream(pdfFile);
workbook.save(fileOutputStream, com.aspose.cells.SaveFormat.PDF);
long now = System.currentTimeMillis();
System.out.println("共耗时：" + ((now - old) / 1000.0) + "秒\n\n" + "文件保存在:" + pdfFile.getPath());
return true ;
} else {
System.out.println("文件不存在");
return false ;
}
} catch (Exception e) {
e.printStackTrace();
return false ;
} finally {
if (fileInputStream != null) {
try {
fileInputStream.close();
} catch (IOException e) {
e.printStackTrace();
}
}
if (fileOutputStream != null) {
try {
fileOutputStream.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}
}
public static boolean getPptLicense() {
boolean result = false;
InputStream is = null ;
try {
is = Word2Pdf.class.getClassLoader().getResourceAsStream("license.xml"); // license.xml应放在..\WebRoot\WEB-INF\classes路径下
com.aspose.slides.License aposeLic = new com.aspose.slides.License();
aposeLic.setLicense(is);
result = true;
is.close();
} catch (Exception e) {
if(is != null) {
try {
is.close() ;
} catch (IOException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
}
}
e.printStackTrace();
}
return result; 
}
/**
* aspose:ppt转pdf
* @param inPath
* @param outPath
*/
public static void ppt2pdf(String inPath,String outPath) {
// 验证License
if (!getPptLicense()) {
return;
}
FileOutputStream fileOS = null ;
try {
long old = System.currentTimeMillis();
File file = new File(outPath);// 输出pdf路径
Presentation pres = new Presentation(inPath);//输入pdf路径         
fileOS = new FileOutputStream(file);
pres.save(fileOS, com.aspose.slides.SaveFormat.Pdf);
fileOS.close();
long now = System.currentTimeMillis();
System.out.println("共耗时：" + ((now - old) / 1000.0) + "秒\n\n" + "文件保存在:" + file.getPath()); //转化过程耗时
} catch (Exception e) {
if(fileOS != null) {
try {
fileOS.close();
} catch (IOException e1) {
e1.printStackTrace();
} 
}
e.printStackTrace();
}
}
//img转pdf
public static boolean img2PDF(String imgFilePath, String pdfFilePath){
File file = new File(imgFilePath);
if (file.exists()) {
com.lowagie.text.Document document = new com.lowagie.text.Document();
FileOutputStream fos = null;
try {
fos = new FileOutputStream(pdfFilePath);
PdfWriter.getInstance(document, fos);
// 添加PDF文档的某些信息，比如作者，主题等等
document.addAuthor("newprint");
document.addSubject("test pdf.");
// 设置文档的大小
document.setPageSize(PageSize.A4);
// 打开文档
document.open();
// 写入一段文字
// document.add(new Paragraph("JUST TEST ..."));
// 读取一个图片
Image image = Image.getInstance(imgFilePath);
float imageHeight = image.getScaledHeight();
float imageWidth = image.getScaledWidth();
int i = 0;
while (imageHeight > 500 || imageWidth > 500) {
image.scalePercent(100 - i);
i++;
imageHeight = image.getScaledHeight();
imageWidth = image.getScaledWidth();
System.out.println("imageHeight->" + imageHeight);
System.out.println("imageWidth->" + imageWidth);
}
image.setAlignment(Image.ALIGN_CENTER);
// //设置图片的绝对位置
// image.setAbsolutePosition(0, 0);
// image.scaleAbsolute(500, 400);
// 插入一个图片
document.add(image);
} catch (DocumentException de) {
System.out.println(de.getMessage());
} catch (IOException ioe) {
System.out.println(ioe.getMessage());
}
document.close();
try {
fos.flush();
fos.close();
} catch (IOException e) {
e.printStackTrace();
}
return true;
} else {
return false;
}
}
}

此处提供转pdf的代码，不同文件转pdf或别的格式都需要不同的jar包，下载地址：在这里插入代码片
https://download.csdn.net/download/bianqing0305/11274829
其中包含lisence.xml