Upload / Download document to KM Content Server from WebDynpro Application

Question

I have a requirement where I need to upload / download document into / from KM Content Server from my WebDynpro Application.
Is it technically possible and if Yes, can I get any Sample code for this.

Answer 1

Hi Tahzeeb,
first of all i would point you to the JavaDocs for KMC API.
https://media.sdn.sap.com/javadocs/NW04/SPS15/km/index.html
And here is a small example of reading and storing KM resources.
For reading:
     * Returns a resource as an InputStream from the KM repository
     * at the given path. The IUser is needed for authorization.
     * @param user      IUser for checking authorisation.
     * @param resPath   Path to the KM resource.
     * @return          Requested resource as a stream.
    private InputStream getKmResource(final IUser user, final String resPath)
        throws ResourceAccessException {
        try {
            final IResourceFactory factory = ResourceFactory.getInstance();
            final RID rid = RID.getRID(resPath);
            final IResource kmResource =
                factory.getResource(
                    rid,
                    new ResourceContext(getDeprecatedIUser(user)));
            if (kmResource == null) {
                throw new ResourceNotFoundException(
                    "KM resource not found: " + resPath,
                    resPath);
            return kmResource.getContent().getInputStream();
        catch (WcmException e) {
            throw new ResourceAccessException("Error accessing KM resource: " + resPath, e, resPath);
And for writing:
     * Stores a resource in the KM repository at the given path with the given name and mimetype.
     * Content is taken from the given inputstream.
     * @param user          IUser for checking authorisation.
     * @param resName   Name of the resource
     * @param resPath     Path to the resource
     * @param mimeType MimeType of the resource
     * @param inputStream  Resource content
     * @throws ResourceAccessException
    private void putKmResource(
        final IUser user,
        final String resName,
        final String resPath,
        final String mimeType,
        final InputStream inputStream)
        throws ResourceAccessException {
        try {
            final ResourceContext rContext = new ResourceContext(getDeprecatedIUser(user));
            final RID rid = RID.getRID(resPath);
            final ICollection kmCollection =
                (ICollection) ResourceFactory.getInstance().getResource(rid, rContext);
            if (kmCollection == null) {
                throw new ResourceNotFoundException(
                    "KM resource not found: " + resPath,
                    resPath);
            else {
                IContent kmContent = new Content(inputStream, mimeType, -1);
                IResource kmResource = kmCollection.createResource(resName, null, kmContent);
        catch (ResourceException e) {
            throw new ResourceAccessException("Error accessing KM resource: " + resPath, e, resPath);
        finally {
            try {
                inputStream.close();
            catch (IOException e1) {
                throw new ResourceAccessException("Error closing InputStream when accessing " + resPath, e1, resPath);
Hope that helps for a start.
Best regards,
  ok