java 使用poi将PPT转为图片,在线预览PPT

版权声明：本文为博主原创文章，未经博主允许不得转载。 https://blog.csdn.net/yushuai_IT/article/details/65445898

在线预览PPT,我的思路为java 使用poi将PPT转为图片，图片存储到指定的文件夹下面，然后返回生成的图片名称集合，将图片路径遍历到前台的html标签上，用HTML前台模仿画一个PPT框架，操作图片地址路径从而实现模拟在线预览的效果；前台代码省略，如下是后台的一个工具类，拿去直接可以用（但前提是不要忘记导入POI jar包哦！！），使用哪些jar包也写在下面了，写在这里，后面自己在用时方便，也为后人方便吧

package com;

import java.awt.Color;
import java.awt.Dimension;
import java.awt.Graphics2D;
import java.awt.geom.Rectangle2D;
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.UUID;

import javax.imageio.ImageIO;

import org.apache.poi.POIXMLDocument;
import org.apache.poi.hslf.extractor.PowerPointExtractor;
import org.apache.poi.hslf.usermodel.HSLFSlide;
import org.apache.poi.hslf.usermodel.HSLFSlideShow;
import org.apache.poi.hslf.usermodel.HSLFTextParagraph;
import org.apache.poi.hslf.usermodel.HSLFTextRun;
import org.apache.poi.openxml4j.exceptions.OpenXML4JException;
import org.apache.poi.xslf.extractor.XSLFPowerPointExtractor;
import org.apache.poi.xslf.usermodel.XMLSlideShow;
import org.apache.poi.xslf.usermodel.XSLFSlide;
import org.apache.xmlbeans.XmlException;
import org.openxmlformats.schemas.drawingml.x2006.main.CTRegularTextRun;
import org.openxmlformats.schemas.drawingml.x2006.main.CTTextBody;
import org.openxmlformats.schemas.drawingml.x2006.main.CTTextCharacterProperties;
import org.openxmlformats.schemas.drawingml.x2006.main.CTTextFont;
import org.openxmlformats.schemas.drawingml.x2006.main.CTTextParagraph;
import org.openxmlformats.schemas.presentationml.x2006.main.CTGroupShape;
import org.openxmlformats.schemas.presentationml.x2006.main.CTShape;
import org.openxmlformats.schemas.presentationml.x2006.main.CTSlide;

/**
 * PPT转image工具类
 * 使用的Apache poi-3.14的版本  依赖第三方jar包：poi-3.14-20160307.jar、poi-ooxml-3.14-20160307.jar、
 * 										poi-ooxml-schemas-3.14-20160307.jar、poi-scratchpad-3.14-20160307.jar、xmlbeans-2.6.0.jar
 * @author yds 
 * @date 2017-03-22
 *
 */
public class ConverPPTFileToImageUtil {
	

	/**
	 * 将PPTX 文件转换成image
	 * @param orignalPPTFileName  //PPTX文件路径 如：d:/demo/demo1.pptx
	 * @param targetImageFileDir //转换后的图片保存路径 如：d:/demo/pptxImg
	 * @param imageFormatNameString //图片转化的格式字符串 ，如："jpg"、"jpeg"、"bmp" "png" "gif" "tiff"
	 * @return Map<String,Object>
	 * 	key: converReturnResult   类型：boolean 转化结果 true 代表转换成功，false 代表转换失败
	 * 	key:imgNames			  类型：List<String> 转换成功后图片的全部名称集合
	 * 	注：获取“imgNames”图片名称集合时，请先判断“converReturnResult” 是否为true；如果有一张转换失败则为false
	 */
	@SuppressWarnings("resource")
	public static  Map<String,Object> converPPTXtoImage(String orignalPPTFileName,String targetImageFileDir,
			String imageFormatNameString){
		Map<String,Object> map=new HashMap<String, Object>();
		boolean converReturnResult=true;//是否全部转成功
		List<String> imgNamesList=new ArrayList<String>();//PPT转成图片后所有名称集合
		
		
		FileInputStream orignalPPTFileInputStream=null;
		FileOutputStream orignalPPTFileOutStream=null;
		XMLSlideShow oneSlideShow=null;
		
		try{
			try {
				orignalPPTFileInputStream=new FileInputStream(orignalPPTFileName);
			} catch (FileNotFoundException e) {
				e.printStackTrace();
				converReturnResult=false;
				map.put("converReturnResult", converReturnResult);
				return map;
			}
			
			try {
				oneSlideShow=new XMLSlideShow(orignalPPTFileInputStream);
			} catch (IOException e) {
				e.printStackTrace();
				converReturnResult=false;
				map.put("converReturnResult", converReturnResult);
				return map;
			}
			//获取PPT每页的尺寸大小（宽和高度）
			Dimension onePPTPageSize=oneSlideShow.getPageSize();
			//获取PPT文件中的所有PPT页面，并转换为一张张播放片
			List<XSLFSlide> pptPageXSLFSLiseList= oneSlideShow.getSlides();
			
			String xmlFontFormat="<xml-fragment xmlns:a=\"http://schemas.openxmlformats.org/drawingml/2006/main\" xmlns:r=\"http://schemas.openxmlformats.org/officeDocument/2006/relationships\" xmlns:p=\"http://schemas.openxmlformats.org/presentationml/2006/main\">"+ 
									"<a:rPr lang=\"zh-CN\" altLang=\"en-US\" dirty=\"0\" smtClean=\"0\"> "+
									"<a:latin typeface=\"+mj-ea\"/> "+  
                              "</a:rPr>"+  
                            "</xml-fragment>";  
			
			
			for (int i = 0; i < pptPageXSLFSLiseList.size(); i++) {
				/**
				 * 设置中文为宋体，解决中文乱码问题
				 */
				CTSlide oneCTSlide=pptPageXSLFSLiseList.get(i).getXmlObject();
				CTGroupShape oneCTGroupShape=oneCTSlide.getCSld().getSpTree();
				 List<CTShape>  oneCTShapeList=oneCTGroupShape.getSpList();
				 for (CTShape ctShape : oneCTShapeList) {
					 CTTextBody oneCTTextBody = ctShape.getTxBody();
					 
					 if(null==oneCTTextBody){
						 continue;
					 }
					 CTTextParagraph[]  oneCTTextParagraph= oneCTTextBody.getPArray();
					 CTTextFont oneCTTextFont=null;
					 try {
						oneCTTextFont=CTTextFont.Factory.parse(xmlFontFormat);
					} catch (XmlException e) {
						e.printStackTrace();
					}
					 
					 for (CTTextParagraph ctTextParagraph : oneCTTextParagraph) {
						 CTRegularTextRun[]  onrCTRegularTextRunArray=ctTextParagraph.getRArray();
						 for (CTRegularTextRun ctRegularTextRun : onrCTRegularTextRunArray) {
							 CTTextCharacterProperties  oneCTTextCharacterProperties =ctRegularTextRun.getRPr();
							 oneCTTextCharacterProperties.setLatin(oneCTTextFont);
							 
						}
						 
					}
				}
				 
				 //创建BufferedImage 对象，图像尺寸为原来的PPT的每页尺寸
				 
				 BufferedImage oneBufferedImage=new BufferedImage(onePPTPageSize.width, onePPTPageSize.height, BufferedImage.TYPE_INT_RGB);
				 Graphics2D  oneGraphics2D = oneBufferedImage.createGraphics();
				 //将PPT文件中的每个页面中的相关内容画到转换后的图片中
				 pptPageXSLFSLiseList.get(i).draw(oneGraphics2D);
				 /**
				  * 设置图片的存放路径和图片格式，注意生成的文件路径为绝对路径，最终获得各个图像文件所对应的输出流的对象
				  */
				 
				 try {
					 String imgName=(i+1)+"_"+UUID.randomUUID().toString()+"."+imageFormatNameString;
					 imgNamesList.add(imgName);//将图片名称添加的集合中
					 
					 orignalPPTFileOutStream=new FileOutputStream(targetImageFileDir+imgName);
//					orignalPPTFileOutStream=new FileOutputStream(targetImageFileDir+(i+1)+"_"+UUID.randomUUID().toString()+"."+imageFormatNameString);
				} catch (FileNotFoundException e) {
					e.printStackTrace();
					converReturnResult=false;
					map.put("converReturnResult", converReturnResult);
					return map;
				}
				 
				 //将转换后的各个图片文件保存带指定的目录中
				 try {
					ImageIO.write(oneBufferedImage, imageFormatNameString, orignalPPTFileOutStream);
				} catch (IOException e) {
					e.printStackTrace();
					converReturnResult=false;
					map.put("converReturnResult", converReturnResult);
					return map;
				}
				 
				
			}
			
			
		} finally{
			try {
				if(orignalPPTFileInputStream!=null){
					orignalPPTFileInputStream.close();
				}
			} catch (IOException e) {
				e.printStackTrace();
			}
			
			try {
				if(orignalPPTFileOutStream!=null){
					orignalPPTFileOutStream.close();
				}
			} catch (IOException e) {
				e.printStackTrace();
			}
			map.put("converReturnResult", converReturnResult);
			map.put("imgNames", imgNamesList);
		}
		
		
		
		return map;
	}
	
	
	/**
	 * 将PPT 文件转换成image
	 * @param orignalPPTFileName  //PPT文件路径 如：d:/demo/demo1.ppt
	 * @param targetImageFileDir //转换后的图片保存路径 如：d:/demo/pptImg
	 * @param imageFormatNameString //图片转化的格式字符串 ，如："jpg"、"jpeg"、"bmp" "png" "gif" "tiff"
	 * @return Map<String,Object>
	 * 	key: converReturnResult   类型：boolean 转化结果 true 代表转换成功，false 代表转换失败
	 * 	key:imgNames			  类型：List<String> 转换成功后图片的全部名称集合
	 * 	注：获取“imgNames”图片名称集合时，请先判断“converReturnResult” 是否为true；如果有一张转换失败则为false
	 */
	@SuppressWarnings("resource")
	public static Map<String,Object> converPPTtoImage(String orignalPPTFileName,String targetImageFileDir,
			String imageFormatNameString){
		Map<String,Object> map=new HashMap<String, Object>();
		boolean converReturnResult=true;//是否全部转成功
		List<String> imgNamesList=new ArrayList<String>();//PPT转成图片后所有名称集合
		
		
		FileInputStream orignalPPTFileInputStream=null;
		FileOutputStream orignalPPTFileOutStream=null;
		HSLFSlideShow  oneHSLFSlideShow=null;
		
		
		try{
			try {
				orignalPPTFileInputStream=new FileInputStream(orignalPPTFileName);
			} catch (FileNotFoundException e) {
				e.printStackTrace();
				converReturnResult=false;
				map.put("converReturnResult", converReturnResult);
				return map;
			}
			
			try {
				oneHSLFSlideShow=new HSLFSlideShow(orignalPPTFileInputStream);
			} catch (IOException e) {
				e.printStackTrace();
				converReturnResult=false;
				map.put("converReturnResult", converReturnResult);
				return map;
			}
			//获取PPT每页的大小（宽和高度）
			Dimension  onePPTPageSize= oneHSLFSlideShow.getPageSize();
			
			//获得PPT文件中的所有的PPT页面（获得每一张幻灯片）,并转为一张张的播放片
			List<HSLFSlide> pptPageSlideList=oneHSLFSlideShow.getSlides();
			//下面循环的主要功能是实现对PPT文件中的每一张幻灯片进行转换和操作
			for (int i = 0; i <pptPageSlideList.size(); i++) {
				//这几个循环只要是设置字体为宋体，防止中文乱码，
				List<List<HSLFTextParagraph>>  oneTextParagraphs=pptPageSlideList.get(i).getTextParagraphs();
				for (List<HSLFTextParagraph> list :oneTextParagraphs) {
					for (HSLFTextParagraph hslfTextParagraph : list) {
						 List<HSLFTextRun> HSLFTextRunList= hslfTextParagraph.getTextRuns();
						 for (int j = 0; j <HSLFTextRunList.size(); j++) {
							 
							 /*
							  * 如果PPT在WPS中保存过，则 HSLFTextRunList.get(j).getFontSize();的值为0或者26040，
							  * 因此首先识别当前文本框内的字体尺寸是否为0或者大于26040，则设置默认的字体尺寸。
							  * 
							  */
							 //设置字体大小
							Double size= HSLFTextRunList.get(j).getFontSize();
							if((size<=0)||(size>=26040)){
								HSLFTextRunList.get(j).setFontSize(20.0);
							}
							 //设置字体样式为宋体
//							String family=HSLFTextRunList.get(j).getFontFamily();
							HSLFTextRunList.get(j).setFontFamily("宋体");
							
						}
					}
					
				}
				/**
				 * 创建BufferedImage对象，图像的尺寸为原来的每页的尺寸
				 */
				BufferedImage oneBufferedImage=new BufferedImage(onePPTPageSize.width, onePPTPageSize.height, BufferedImage.TYPE_INT_RGB);
				 Graphics2D oneGraphics2D=oneBufferedImage.createGraphics();
				 /**
				  * 设置转换后的图片背景色为白色
				  * 
				  */
				 oneGraphics2D.setPaint(Color.white);
				 oneGraphics2D.fill(new Rectangle2D.Float(0,0,onePPTPageSize.width,onePPTPageSize.height));
				 pptPageSlideList.get(i).draw(oneGraphics2D);
				 /**
				  * 设置图片的存放路径和图片格式，注意生成的图片路径为绝对路径，最终获得各个图像文件所对应的输出流对象
				  */
				 try {
					 
					 String imgName=(i+1)+"_"+UUID.randomUUID().toString()+"."+imageFormatNameString;
					 imgNamesList.add(imgName);//将图片名称添加的集合中
					 
					orignalPPTFileOutStream=new FileOutputStream(targetImageFileDir+imgName);
					
				} catch (FileNotFoundException e) {
					e.printStackTrace();
					converReturnResult=false;
					map.put("converReturnResult", converReturnResult);
					return map;
				}
				/**
				 * 转换后的图片文件保存的指定的目录中
				 */
				 
				 try {
					ImageIO.write(oneBufferedImage, imageFormatNameString, orignalPPTFileOutStream);
//					throw new IOException();
				} catch (IOException e) {
					e.printStackTrace();
					converReturnResult=false;
					map.put("converReturnResult", converReturnResult);
					return map;
				}
				
				
			}
			
			
			
			
		}finally{
			try {
				if(orignalPPTFileInputStream!=null){
					orignalPPTFileInputStream.close();
				}
			} catch (IOException e) {
				e.printStackTrace();
			}
			
			try {
				if(orignalPPTFileOutStream!=null){
					orignalPPTFileOutStream.close();
				}
			} catch (IOException e) {
				e.printStackTrace();
			}
			map.put("converReturnResult", converReturnResult);
			map.put("imgNames", imgNamesList);
		}
	
		
		
		return map;
	}
	
	
	 /**
	  * 直接抽取幻灯片的全部内容
	  * @param filePath
	  * @return
	  * @throws IOException
	  */
    @SuppressWarnings("resource")
	public static String readppt2003Text(String filePath) {
    	
    	 PowerPointExtractor extractor=null;;
		try {
			File file = new File(filePath);
			 FileInputStream fin=new FileInputStream(file);
			extractor = new PowerPointExtractor(fin);
		} catch (FileNotFoundException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		} catch (IOException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
		
		
        return extractor.getText();
    }
    
    
 // 读取pptx
    @SuppressWarnings("resource")
	public  static String readPPTX2007Text(String file) {
         try {
			return new XSLFPowerPointExtractor(POIXMLDocument.openPackage(file)).getText();
		} catch (XmlException e) {
			e.printStackTrace();
		} catch (OpenXML4JException e) {
			e.printStackTrace();
		} catch (IOException e) {
			e.printStackTrace();
		}
		return null;   
    }
	
	
	
	public static void main(String[] args) {
		/*
		 //PPT调用示例
//		Map<String,Object> map=	ConverPPTFileToImageUtil.converPPTtoImage("E:\\ppt\\oracle SQL语法大全(第一课).ppt", "E:\\ppt\\pptimg\\", "jpg");
		//PPTX调用示例
		Map<String,Object> map=ConverPPTFileToImageUtil.converPPTXtoImage("E:\\ppt\\PMS2.0界面设计培训-20130507.pptx", "E:\\ppt\\pptimg\\", "jpg");
		boolean converReturnResult=(Boolean) map.get("converReturnResult");
		System.out.println("converReturnResult:"+converReturnResult);
		if(converReturnResult){//如果全部转换成功,则为true;如果有一张转换失败,则为fasle
			@SuppressWarnings("unchecked")
			List<String> imgNames=(List<String>) map.get("imgNames");
			for (String imgName : imgNames) {
				System.out.println(imgName);
			}
			
		}*/
//		String content=readppt200Text("E:\\ppt\\oracle SQL语法大全(第一课).ppt");
//		String content=readPPT2007("E:\\ppt\\7第七讲（13-14）.pptx");
		String content=readPPTX2007Text("E:\\ppt\\PMS2.0界面设计培训-20130507.pptx");
		System.out.println(content);
	}
		
		
		

}