Transform EPUB to ODT via Java

On Premise Java API to Render EPUB to ODT without using any third party application

Converting an EPUB file to ODT is a simple two-step process. The first step is to render the EPUB file to DOC using Aspose.PDF for Java. Aspose.PDF for Java is a powerful PDF processing API that is part of the Aspose.Total for Java package. It allows you to easily convert EPUB files to DOC format.

Once the EPUB file has been rendered to DOC, the second step is to convert the DOC file to ODT using Aspose.Words for Java. Aspose.Words for Java is a powerful document processing API that is also part of the Aspose.Total for Java package. It allows you to quickly and easily convert DOC files to ODT format.

By using Aspose.PDF for Java and Aspose.Words for Java, you can easily convert EPUB files to ODT format in just two simple steps. Aspose.PDF for Java allows you to render EPUB files to DOC format, and Aspose.Words for Java allows you to convert DOC files to ODT format. Both APIs are part of the Aspose.Total for Java package, making it easy to access both APIs in one convenient package.

Java API to Convert EPUB to ODT

Open EPUB file using Document class
Convert EPUB to DOC by using save method
Load DOC file by using Document class of Aspose.Words
Save the document to ODT format using save method and set ODT as SaveFormat

Get Started with Java File Manipulation APIs

You can easily use Aspose.Total for Java directly from a Maven based project and include Aspose.PDF for Java and Aspose.Words for Java in your pom.xml.

Alternatively, you can get a ZIP file from downloads .

// load EPUB file with an instance of Document class
Document document = new Document("template.epub");
// save EPUB as a DOC 
document.save("DocOutput.doc", SaveFormat.DOC); 
// load DOC with an instance of Document
Document outputDocument = new com.aspose.words.Document("DocOutput.doc");
// call save method while passing SaveFormat.ODT
outputDocument.save("output.odt", SaveFormat.ODT);   

Open Password Protected EPUB Document via Java

While converting EPUB to ODT, even if your document is password protected, you can still open it using PDF Manipulation API Aspose.PDF for Java . In order to open the encrypted file, you need to create a Document object and open the EPUB using the owner’s password.

Document document = new Document("input.epub", "password");
// save EPUB as a DOC 
document.save("DocOutput.doc", SaveFormat.DOC);

Save ODT Document to a Database via Java

While saving your input document to ODT file format, you can also save your document to database instead of a file system. You may need to implement storing and retrieving Document objects to and from a database. This would be necessary if you were implementing any type of content management system. In order to save your ODT to database it is often necessary to serialize the document to obtain a byte array. This can be done using Aspose.Words for Java API. After getting your byte array, you can store it in the database using SQL statement.

public static void StoreToDatabase(Document doc, Connection mConnection) throws Exception {
    // create an output stream which uses byte array to save data
    ByteArrayOutputStream aout = new ByteArrayOutputStream();
    // save the document to byte array
    doc.save(aout, SaveFormat.ODT);
    // get the byte array from output steam
    // the byte array now contains the document
    byte[] buffer = aout.toByteArray();
    // get the filename from the document.
    String fileName = doc.getOriginalFileName();
    String filePath = fileName.replace("\\", "\\\\");
    // create the SQL command.
    String commandString = "INSERT INTO Documents (FileName, FileContent) VALUES('" + filePath + "', '" + buffer + "')";
    Statement statement = mConnection.createStatement();
    statement.executeUpdate(commandString);
}  