java 使用poi將PPT轉為圖片,線上預覽PPT
阿新 • • 發佈：2019-02-03
線上預覽PPT,我的思路為java 使用poi將PPT轉為圖片，圖片儲存到指定的資料夾下面，然後返回生成的圖片名稱集合，將圖片路徑遍歷到前臺的html標籤上，用HTML前臺模仿畫一個PPT框架，操作圖片地址路徑從而實現模擬線上預覽的效果；前臺程式碼省略，如下是後臺的一個工具類，拿去直接可以用（但前提是不要忘記匯入POI jar包哦！！），使用哪些jar包也寫在下面了，寫在這裡，後面自己在用時方便，也為後人方便吧
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轉image工具類
* 使用的Apache poi-3.14的版本 依賴第三方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 {
/**
* 將PPTX 檔案轉換成image
* @param orignalPPTFileName //PPTX檔案路徑 如：d:/demo/demo1.pptx
* @param targetImageFileDir //轉換後的圖片儲存路徑 如：d:/demo/pptxImg
* @param imageFormatNameString //圖片轉化的格式字串 ，如："jpg"、"jpeg"、"bmp" "png" "gif" "tiff"
* @return Map<String,Object>
* key: converReturnResult 型別：boolean 轉化結果 true 代表轉換成功，false 代表轉換失敗
* key:imgNames 型別：List<String> 轉換成功後圖片的全部名稱集合
* 注：獲取“imgNames”圖片名稱集合時，請先判斷“converReturnResult” 是否為true；如果有一張轉換失敗則為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;//是否全部轉成功
List<String> imgNamesList=new ArrayList<String>();//PPT轉成圖片後所有名稱集合
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;
}
//獲取PPT每頁的尺寸大小（寬和高度）
Dimension onePPTPageSize=oneSlideShow.getPageSize();
//獲取PPT檔案中的所有PPT頁面，並轉換為一張張播放片
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++) {
/**
* 設定中文為宋體，解決中文亂碼問題
*/
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);
}
}
}
//建立BufferedImage 物件，影象尺寸為原來的PPT的每頁尺寸
BufferedImage oneBufferedImage=new BufferedImage(onePPTPageSize.width, onePPTPageSize.height, BufferedImage.TYPE_INT_RGB);
Graphics2D oneGraphics2D = oneBufferedImage.createGraphics();
//將PPT檔案中的每個頁面中的相關內容畫到轉換後的圖片中
pptPageXSLFSLiseList.get(i).draw(oneGraphics2D);
/**
* 設定圖片的存放路徑和圖片格式，注意生成的檔案路徑為絕對路徑，最終獲得各個影象檔案所對應的輸出流的物件
*/
try {
String imgName=(i+1)+"_"+UUID.randomUUID().toString()+"."+imageFormatNameString;
imgNamesList.add(imgName);//將圖片名稱新增的集合中
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;
}
//將轉換後的各個圖片檔案儲存帶指定的目錄中
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;
}
/**
* 將PPT 檔案轉換成image
* @param orignalPPTFileName //PPT檔案路徑 如：d:/demo/demo1.ppt
* @param targetImageFileDir //轉換後的圖片儲存路徑 如：d:/demo/pptImg
* @param imageFormatNameString //圖片轉化的格式字串 ，如："jpg"、"jpeg"、"bmp" "png" "gif" "tiff"
* @return Map<String,Object>
* key: converReturnResult 型別：boolean 轉化結果 true 代表轉換成功，false 代表轉換失敗
* key:imgNames 型別：List<String> 轉換成功後圖片的全部名稱集合
* 注：獲取“imgNames”圖片名稱集合時，請先判斷“converReturnResult” 是否為true；如果有一張轉換失敗則為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;//是否全部轉成功
List<String> imgNamesList=new ArrayList<String>();//PPT轉成圖片後所有名稱集合
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;
}
//獲取PPT每頁的大小（寬和高度）
Dimension onePPTPageSize= oneHSLFSlideShow.getPageSize();
//獲得PPT檔案中的所有的PPT頁面（獲得每一張幻燈片）,並轉為一張張的播放片
List<HSLFSlide> pptPageSlideList=oneHSLFSlideShow.getSlides();
//下面迴圈的主要功能是實現對PPT檔案中的每一張幻燈片進行轉換和操作
for (int i = 0; i <pptPageSlideList.size(); i++) {
//這幾個迴圈只要是設定字型為宋體，防止中文亂碼，
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中儲存過，則 HSLFTextRunList.get(j).getFontSize();的值為0或者26040，
* 因此首先識別當前文字框內的字型尺寸是否為0或者大於26040，則設定預設的字型尺寸。
*
*/
//設定字型大小
Double size= HSLFTextRunList.get(j).getFontSize();
if((size<=0)||(size>=26040)){
HSLFTextRunList.get(j).setFontSize(20.0);
}
//設定字型樣式為宋體
// String family=HSLFTextRunList.get(j).getFontFamily();
HSLFTextRunList.get(j).setFontFamily("宋體");
}
}
}
/**
* 建立BufferedImage物件，影象的尺寸為原來的每頁的尺寸
*/
BufferedImage oneBufferedImage=new BufferedImage(onePPTPageSize.width, onePPTPageSize.height, BufferedImage.TYPE_INT_RGB);
Graphics2D oneGraphics2D=oneBufferedImage.createGraphics();
/**
* 設定轉換後的圖片背景色為白色
*
*/
oneGraphics2D.setPaint(Color.white);
oneGraphics2D.fill(new Rectangle2D.Float(0,0,onePPTPageSize.width,onePPTPageSize.height));
pptPageSlideList.get(i).draw(oneGraphics2D);
/**
* 設定圖片的存放路徑和圖片格式，注意生成的圖片路徑為絕對路徑，最終獲得各個影象檔案所對應的輸出流物件
*/
try {
String imgName=(i+1)+"_"+UUID.randomUUID().toString()+"."+imageFormatNameString;
imgNamesList.add(imgName);//將圖片名稱新增的集合中
orignalPPTFileOutStream=new FileOutputStream(targetImageFileDir+imgName);
} catch (FileNotFoundException e) {
e.printStackTrace();
converReturnResult=false;
map.put("converReturnResult", converReturnResult);
return map;
}
/**
* 轉換後的圖片檔案儲存的指定的目錄中
*/
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;
}
/**
* 直接抽取幻燈片的全部內容
* @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();
}
// 讀取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呼叫示例
// Map<String,Object> map= ConverPPTFileToImageUtil.converPPTtoImage("E:\\ppt\\oracle SQL語法大全(第一課).ppt", "E:\\ppt\\pptimg\\", "jpg");
//PPTX呼叫示例
Map<String,Object> map=ConverPPTFileToImageUtil.converPPTXtoImage("E:\\ppt\\PMS2.0介面設計培訓-20130507.pptx", "E:\\ppt\\pptimg\\", "jpg");
boolean converReturnResult=(Boolean) map.get("converReturnResult");
System.out.println("converReturnResult:"+converReturnResult);
if(converReturnResult){//如果全部轉換成功,則為true;如果有一張轉換失敗,則為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語法大全(第一課).ppt");
// String content=readPPT2007("E:\\ppt\\7第七講（13-14）.pptx");
String content=readPPTX2007Text("E:\\ppt\\PMS2.0介面設計培訓-20130507.pptx");
System.out.println(content);
}
}