How do I upload a document to SharePoint with Java?

Question

I\'m creating some big files (DB exports) with Java and I need to put them somewhere on our SharePoint server. Right now, I\'m doing this with IE but I\'d like to automate t

Answer 1

An other solution is to use HTTP PUT method to send a file directly to the Sharepoint.

For that you can use Apache HTTP Client:

    org.apache.httpcomponents
    httpclient
    4.2.3

And to permit NTLMv2 authentication you need JCIF library.

   jcifs
   jcifs
   1.3.17

First we need to write a wrapper to permit Apache HTTP Client to use JCIF for NTLMv2 support :

public final class JCIFSEngine implements NTLMEngine {

    private static final int TYPE_1_FLAGS =
            NtlmFlags.NTLMSSP_NEGOTIATE_56
            | NtlmFlags.NTLMSSP_NEGOTIATE_128
            | NtlmFlags.NTLMSSP_NEGOTIATE_NTLM2
            | NtlmFlags.NTLMSSP_NEGOTIATE_ALWAYS_SIGN
            | NtlmFlags.NTLMSSP_REQUEST_TARGET;

    @Override
    public String generateType1Msg(final String domain, final String workstation)
            throws NTLMEngineException {
        final Type1Message type1Message = new Type1Message(TYPE_1_FLAGS, domain, workstation);
        return Base64.encode(type1Message.toByteArray());
    }

    @Override
    public String generateType3Msg(final String username, final String password,
            final String domain, final String workstation, final String challenge)
            throws NTLMEngineException {
        Type2Message type2Message;
        try {
            type2Message = new Type2Message(Base64.decode(challenge));
        } catch (final IOException exception) {
            throw new NTLMEngineException("Invalid NTLM type 2 message", exception);
        }
        final int type2Flags = type2Message.getFlags();
        final int type3Flags = type2Flags
                & (0xffffffff ^ (NtlmFlags.NTLMSSP_TARGET_TYPE_DOMAIN | NtlmFlags.NTLMSSP_TARGET_TYPE_SERVER));
        final Type3Message type3Message = new Type3Message(type2Message, password, domain,
                username, workstation, type3Flags);
        return Base64.encode(type3Message.toByteArray());
    }
}

Reference

The main code to execute HTTP PUT with authentication:

    try {

        HttpParams params = new BasicHttpParams();
        HttpProtocolParams.setVersion(params, HttpVersion.HTTP_1_1);
        DefaultHttpClient httpclient = new DefaultHttpClient(params);

        //Register JCIF NTLMv2 to manage ntlm auth.
        httpclient.getAuthSchemes().register("ntlm", new AuthSchemeFactory() {
            @Override
            public AuthScheme newInstance(HttpParams hp) {
                return new NTLMScheme(new JCIFSEngine());
            }
        });

        //Provide login/password
        httpclient.getCredentialsProvider().setCredentials(
                AuthScope.ANY,
                new NTCredentials([LOGIN], [PASSWORD], "", [DOMAIN]));
        //Create HTTP PUT Request       
        HttpPut request = new HttpPut("http://[server]/[site]/[folder]/[fileName]");
        request.setEntity(new FileEntity([File]));            

        return httpclient.execute(request);

    } catch (IOException ex) {
      //...
    }