Converting .doc to .html in Java using Apache POI

Question

I want to convert a document .doc that contains some images. How to convert it to *.html, so that the images will remain same position? How to store those images in separate folder named image and use this folder as a source for image?

My code:

import java.io.BufferedWriter;
import java.io.DataOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.OutputStreamWriter;
import java.io.StringWriter;
import javax.swing.JEditorPane;
import javax.swing.JFrame;
import javax.swing.JScrollPane;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.transform.OutputKeys;
import javax.xml.transform.Transformer;
import javax.xml.transform.TransformerFactory;
import javax.xml.transform.dom.DOMSource;
import javax.xml.transform.stream.StreamResult;
import org.apache.poi.hwpf.HWPFDocument;
import org.apache.poi.hwpf.converter.WordToHtmlConverter;
import org.apache.poi.hwpf.extractor.WordExtractor;
import org.apache.poi.xwpf.converter.core.FileImageExtractor;
import org.apache.poi.xwpf.converter.core.FileURIResolver;
import org.apache.poi.xwpf.converter.xhtml.XHTMLOptions;
import org.w3c.dom.Document;

public class TestWordToHtmlConverter {
    private File docFile;
    private File file;

    public TestWordToHtmlConverter(File docFile) {
        this.docFile = docFile;
    }

    public void convert(File file) {
    this.file = file;

        try {
            FileInputStream finStream=new FileInputStream(docFile.getAbsolutePath()); 
            HWPFDocument doc=new HWPFDocument(finStream);
            WordExtractor wordExtract=new WordExtractor(doc);
            Document newDocument = DocumentBuilderFactory.newInstance() .newDocumentBuilder().newDocument();
            WordToHtmlConverter wordToHtmlConverter = new WordToHtmlConverter(newDocument) ;
            wordToHtmlConverter.processDocument(doc);

            StringWriter stringWriter = new StringWriter();
            Transformer transformer = TransformerFactory.newInstance().newTransformer();

            transformer.setOutputProperty(OutputKeys.INDENT, "yes");
            transformer.setOutputProperty(OutputKeys.ENCODING, "utf-8");
            transformer.setOutputProperty(OutputKeys.METHOD, "html");
            transformer.transform(new DOMSource( wordToHtmlConverter.getDocument()), new StreamResult( stringWriter ) );

            String html = stringWriter.toString();
            FileOutputStream fos=new FileOutputStream(new File("html/sample.html"));
            DataOutputStream dos;

            try {
                BufferedWriter out = new BufferedWriter(new OutputStreamWriter(fos,"UTF-8"));    
                out.write(html);
                out.close();
            }
            catch (IOException e) {
               e.printStackTrace();
            }

           /*JEditorPane editorPane = new JEditorPane();
           editorPane.setContentType("text/html");
           editorPane.setEditable(false);

           editorPane.setPage(file.toURI().toURL());

           JScrollPane scrollPane = new JScrollPane(editorPane);     
           JFrame f = new JFrame("Display Html File");
           f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
           f.getContentPane().add(scrollPane);
           f.setSize(512, 342);
           f.setVisible(true);*/

        } catch(Exception e) {
            e.printStackTrace();
        }
    }  

    public static void main(String args[]) {
        TestWordToHtmlConverter TTC=new TestWordToHtmlConverter(new File("docx/sample.doc"));
        TTC.convert(TTC.docFile);         
   }
}

This implementation doesn't create images or links to them. This can be changed by overriding AbstractWordConverter.processImage(Element, boolean, Picture) method

Answer 1

As said in API docs:

WordToHtmlConverter doesn't create images or links to them. This can be changed by overriding AbstractWordConverter.processImage(Element, boolean, Picture) method.

How to override method you can found here:

• I need Apache POI Pictures converted from a word document to a html file

You can try using DOCX 2 XHTML converter based on Apache POI XWPF:

• XWPFDocument 2 XHTML

Also you can use Apache Tika, built on top of Apache POI. An example that included in Alfresco can be found here:

• HTMLRenderingEngine

There are also many other converters.