Getting text style from docx using Apache poi

Question

I\'m trying to get the style information from an MS docx file, I have no problem writing file content with added styles like bold, italic. font size etc, but reading the fil

Answer 1

Here is a very good way to copy styles from another document. A little background; a docx file is really a zip file of a number of xml files including styles.xml. In the following code sample I read numberin.xml, parse it into a CTStyles object then set it in the current document. Here is most of the code. You can use the same approach to copy numbering.xml for your Word numbering.

// copy an existing style.xml document into this document to get styles
public void copyStylesFromDocument(String documentFileName) {
    log.debug("fileName " + documentFileName);
    try {
        InputStream is = CertificationReportHelper.getInputStreamFromZipFile(documentFileName, FILE_NAME_STYLES);
        CTStyles ctStyle = CTStyles.Factory.parse(is);
        XWPFStyles styles = getDoc().createStyles();
        styles.setStyles(ctStyle);
        log.info("Styles copied from file " + FILE_NAME_STYLES + " in document" + documentFileName);
    } catch (Exception e) {
        String msg = "Error copying styles from file " + FILE_NAME_STYLES + " in document" + documentFileName;
        addErrorMessage(msg, e);
        log.debug(e, e);
    }
    @SuppressWarnings("resource") // closing stream causes input stream to close and operation fails
public static InputStream getInputStreamFromZipFile(String zipFileName, String containedFile) {
    InputStream is = null;
    ZipFile zfile = null;
    try {
        zfile = new ZipFile(zipFileName);
        ZipEntry entry = zfile.getEntry(containedFile);
        log.trace(entry);
        if (entry != null) {
            is = zfile.getInputStream(entry);
            log.trace("created input stream  for file " + containedFile + " from zip file" + zipFileName);
        } else {
            String msg = "Error getting input stream for file " + containedFile + " from zip file " + zipFileName;
            // closing stream causes input stream to close and operation fails
            throw new ApplicationRuntimeException(msg);
        }
    } catch (Exception e) {
        String msg = "Error getting input stream for file " + containedFile + " from zip file " + zipFileName + "  Message:"
                + e.getMessage();
        log.warn("*** Throwing exception " + msg);
        throw new ApplicationRuntimeException(msg, e);
    } finally {
        // closing stream causes input stream to close and operation fails
        // try {
        // zfile.close();
        // } catch (IOException e) {
        // log.warn("Catching exception "+e+" closing zip file "+zipFileName);
        // }
    }
    return is;