Java poi 将 word 转成 html，ppt 转成图片

Java 容易被忽视的 poi 包

Poi 提取技术是 java 中一大亮点。前几日在做项目时需要将 ppt 转化为图片，将 word 文档输出的功能。在百度搜了些资料，整理了一下，借用前辈们的经验整合了这两个小小的类

文章原出两处：http://vtrtbb.iteye.com/blog/601267

          http://pengenjing.iteye.com/blog/1901225
​

来看下面的吧 word 文档转化为 html 格式的代码先：

package com.hsp.util;

import java.io.BufferedWriter;

import java.io.File;

import java.io.FileInputStream;

import java.io.FileNotFoundException;

import java.io.FileOutputStream;

import java.io.IOException;

import java.io.OutputStream;

import java.io.OutputStreamWriter;

import java.util.List;

import javax.xml.parsers.DocumentBuilderFactory;

import javax.xml.parsers.ParserConfigurationException;

import javax.xml.transform.OutputKeys;

import javax.xml.transform.Transformer;

import javax.xml.transform.TransformerException;

import javax.xml.transform.TransformerFactory;

import javax.xml.transform.dom.DOMSource;

import javax.xml.transform.stream.StreamResult;

import org.apache.commons.io.output.ByteArrayOutputStream;

import org.apache.poi.hwpf.HWPFDocument;

import org.apache.poi.hwpf.converter.PicturesManager;

import org.apache.poi.hwpf.converter.WordToHtmlConverter;

import org.apache.poi.hwpf.model.PicturesTable;

import org.apache.poi.hwpf.usermodel.CharacterRun;

import org.apache.poi.hwpf.usermodel.Paragraph;

import org.apache.poi.hwpf.usermodel.Picture;

import org.apache.poi.hwpf.usermodel.PictureType;

import org.apache.poi.hwpf.usermodel.Range;

import org.apache.poi.hwpf.usermodel.Table;

import org.apache.poi.hwpf.usermodel.TableCell;

import org.apache.poi.hwpf.usermodel.TableIterator;

import org.apache.poi.hwpf.usermodel.TableRow;

import org.w3c.dom.Document;

public class Word2Html {

/*newrealpath是指word文档的原路径，realpath是指word文档的新路径，newsid是指该word文档存储在数据库中的唯一id值，用户没上传一个word文档，后台会根据生成的唯一id值创建一个.html文件，就是newsid.html*/

public static boolean changeWord2html(String newrealpath,String realpath,int newsid) {  

    boolean b=true; 

 try {  

        convert2Html(newrealpath,realpath+"//"+newsid+".html");  

    } catch (Exception e) {  

        e.printStackTrace();

        b=false;

    }  

    return b;

}  
​

//该方法是将文本写入路径之中

public static void writeFile(String content, String path) {  

    FileOutputStream fos = null;  

    BufferedWriter bw = null;  

    try {  

        File file = new File(path);  

        fos = new FileOutputStream(file);  

        bw = new BufferedWriter(new OutputStreamWriter(fos,"GB2312"));  

        bw.write(content);  

    } catch (FileNotFoundException fnfe) {  

        fnfe.printStackTrace();  

    } catch (IOException ioe) {  

        ioe.printStackTrace();  

    } finally {  

        try {  

            if (bw != null)  

                bw.close();  

            if (fos != null)  

                fos.close();  

        } catch (IOException ie) {  

        }  

    }  

}  

public static void convert2Html(String fileName, String outPutFile)  

        throws TransformerException, IOException,  

        ParserConfigurationException {  

    HWPFDocument wordDocument = new HWPFDocument(new FileInputStream(fileName));//创建一个文档  

    WordToHtmlConverter wordToHtmlConverter = new WordToHtmlConverter(  

            DocumentBuilderFactory.newInstance().newDocumentBuilder()  

                    .newDocument());//对普通文本的操作

     wordToHtmlConverter.setPicturesManager( new PicturesManager()  

     {  

         public String savePicture( byte[] content,  

                 PictureType pictureType, String suggestedName,  

                 float widthInches, float heightInches )  

         {  

             return "test/"+suggestedName;  

         }  

     } );//对图片的操作

    wordToHtmlConverter.processDocument(wordDocument);  

    //保存图片  

    List pics=wordDocument.getPicturesTable().getAllPictures();  

    if(pics!=null){  

        for(int i=0;i下面都是转换

    TransformerFactory tf = TransformerFactory.newInstance();  

    Transformer serializer = tf.newTransformer();  

    serializer.setOutputProperty(OutputKeys.ENCODING, "GB2312");  

    serializer.setOutputProperty(OutputKeys.INDENT, "yes");  

    serializer.setOutputProperty(OutputKeys.METHOD, "html");  

    serializer.transform(domSource, streamResult);  

    out.close();  

    writeFile(new String(out.toByteArray()), outPutFile); //调用writeFile类 

}  
​

}

下面的我们来看看 ppt 转化为图片格式的代码：

package com.hsp.util;

import java.awt.Dimension;

import java.io.File;

import java.io.FileInputStream;

import java.io.FileNotFoundException;

import java.io.FileOutputStream;

import java.io.IOException;

import java.util.ArrayList;

import java.util.List;

import java.awt.Color;

import java.awt.Dimension;

import java.awt.Graphics2D;

import java.awt.geom.Rectangle2D;

import java.awt.image.BufferedImage;

import org.apache.poi.hslf.model.TextRun;

import org.apache.poi.hslf.record.Slide;

import org.apache.poi.hslf.usermodel.RichTextRun;

import org.apache.poi.hslf.usermodel.SlideShow;

public class PPTtoImage {

/pptload 是指 ppt 的原路径，newfullnewpath 是指 ppt 的新路径，newsid 是指该 ppt 存储在数据库中的唯一 id 值，用户没上传一个 ppt，后台会根据生成的唯一 id 值创建一个唯一的文件夹，该文件夹内存放该 ppt 转化的图片/

public static List changppttoimage(String pptload,String newfullnewpath,int newsid){

// 读入 PPT 文件

File file = new File(pptload);

return doPPTtoImage(file,newfullnewpath,newsid);

}

public static List doPPTtoImage(File file,String newfullnewpath,int newsid){

/*boolean isppt = checkFile(file);

if (!isppt) {

System.out.println("你指定的文件不是 ppt 文档!");

return false;

}*/

List al=new ArrayList();

try {

FileInputStream is = new FileInputStream(file);

SlideShow ppt = new SlideShow(is);

is.close();

Dimension pgsize = ppt.getPageSize();

org.apache.poi.hslf.model.Slide[] slide = ppt.getSlides();

for (int i = 0; i < slide.length; i++) {

//System.out.print("第" + i + "页。");

if(slide[i].getNotesSheet()!=null&&slide[i].getNotesSheet().getTextRuns()!=null){

 //获取第一个备注

 //System.out.println("备注：" + slide[i].getNotesSheet().getTextRuns()[0].getText());

}

TextRun[] truns = slide[i].getTextRuns();

for (int k = 0; k < truns.length; k++) {

 RichTextRun[] rtruns = truns[k].getRichTextRuns();

 for (int l = 0; l < rtruns.length; l++) {

  rtruns[l].setFontIndex(1);

  rtruns[l].setFontName("宋体");

  // 获取文本列表

  //System.out.println(rtruns[l].getText());   

 }

}

BufferedImage img = new BufferedImage(pgsize.width,

  pgsize.height, BufferedImage.TYPE_INT_RGB);

Graphics2D graphics = img.createGraphics();

graphics.setPaint(Color.white);

graphics.fill(new Rectangle2D.Float(0, 0, pgsize.width,

  pgsize.height));

slide[i].draw(graphics);

// 这里设置图片的存放路径和图片的格式(jpeg,png,bmp等等),注意生成文件路径

File f=new File(newfullnewpath);
​

//判断该文件夹是否存在，如果不存在，这创建一个新的文件夹

if(!f.isDirectory())

{

f.mkdirs();

}

FileOutputStream out = new FileOutputStream(newfullnewpath+"pict_"+(i + 1) + ".jpeg");

javax.imageio.ImageIO.write(img, "jpeg", out);

al.add("pict_"+(i + 1) + ".jpeg");

out.close();
​

}

/*System.out.println("ok");

return true;*/

} catch (FileNotFoundException e) {

System.out.println(e);

} catch (IOException e) {

e.printStackTrace();

}

return al;

}

// function 检查文件是否为 PPT

public static boolean checkFile(File file) {

boolean isppt = false;

String filename = file.getName();

String suffixname = null;

if (filename != null && filename.indexOf(".") != -1) {

suffixname = filename.substring(filename.indexOf("."));

if (suffixname.equals(".ppt")) {

isppt = true;
​

}

return isppt;

} else {

return isppt;

}

}

}

经测试是可行的，在小编这里是可以运行成功的，不过，上面只是简单的两个类而已，在项目中，还要用 struts2 去限定转化文件的大小等等。