Writing a docx file to a BLOB using Java 1.4 inside Oracle 10g
- by Jon Renaut
I'm trying to generate a blank docx file using Java, add some text, then write it to a BLOB that I can return to our document processing engine (a custom mess of PL/SQL and Java). I have to use the 1.4 JVM inside Oracle 10g, so no Java 1.5 stuff. I don't have a problem writing the docx to a file on my local machine, but when I try to write to BLOB, I'm getting garbage. Am I doing something dumb? Any help is appreciated. Note in the code below, all the get[name]Xml() methods return an org.w3c.dom.Document.
public void save(String fileName) throws Exception {
ZipOutputStream zos = new ZipOutputStream(new FileOutputStream(fileName));
addEntry(zos, getDocumentXml(), "word/document.xml");
addEntry(zos, getContentTypesXml(), "[Content_Types].xml");
addEntry(zos, getRelsXml(), "_rels/.rels");
zos.flush();
zos.close();
}
public java.sql.BLOB save() throws Exception {
java.sql.Connection conn = DbUtilities.openConnection();
BLOB outBlob = BLOB.createTemporary(conn, true, BLOB.DURATION_SESSION);
outBlob.open(BLOB.MODE_READWRITE);
ZipOutputStream zos = new ZipOutputStream(outBlob.setBinaryStream(0L));
addEntry(zos, getDocumentXml(), "word/document.xml");
addEntry(zos, getContentTypesXml(), "[Content_Types].xml");
addEntry(zos, getRelsXml(), "_rels/.rels");
zos.flush();
zos.close();
return outBlob;
}
private void addEntry(ZipOutputStream zos, Document doc, String fileName) throws Exception {
Transformer t = TransformerFactory.newInstance().newTransformer();
ByteArrayOutputStream baos = new ByteArrayOutputStream();
t.transform(new DOMSource(doc), new StreamResult(baos));
ZipEntry ze = new ZipEntry(fileName);
byte[] data = baos.toByteArray();
ze.setSize(data.length);
zos.putNextEntry(ze);
zos.write(data);
zos.flush();
zos.closeEntry();
}
