How to call a Bapi or RFC from a custom logon module

[Former Member]

Can you provide an example of how to call a bapi or rfc from a custom logon module? (used to authenticate in portal)

[Former Member · Accepted solution]

Hi,

you can use JCO to call ABAP function module from your logon page.

to do that you need to modify your logon page.

process of modifying the logon page is wel described in the following link:

[https://www.sdn.sap.com/irj/servlet/prt/portal/prtroot/docs/library/uuid/371e9d90-0201-0010-c39c-fd2956154ab3]

the following link will give you the required code example for calling bapi using JCO.

[http://www.sapdevelopment.co.uk/java/jco/jco_callfunc.htm]

Regards,

Sahidur

please give points if it helps you.

[sridhar_k2 · Accepted solution]

From your EJB / JAVA Module you can call directly SAP BAPI (Which is not recommanded - ) or you can call a RFC Destination from JAVA Module. RFC Destination needs to be created in Visual Admin.

Here you see the code, how to connect to RFC.

http://help.sap.com/saphelp_nw2004s/helpdata/en/17/d609b48ea5f748b47c0f32be265935/content.htm

JCO RFC Destinations

http://help.sap.com/saphelp_nwce10/helpdata/en/44/3bd73865524903e10000000a1553f7/content.htm

Thanks,

Sridhar

[Former Member · Accepted solution]

Hi,

How do i get an instance of ctx?

dstService = (DestinationService) *ctx*.lookup(DestinationService.JNDI_KEY_LOCAL);

would i just do the following?

Context ctx = new InitialContext();

[Former Member · Accepted solution]

Hello all,

Is it possible to use SAP JRA instead?

We have a Connector deployed on the WebAS 6.40. From an EJB (Webservice) it is possible to lookup the connector, but if i try to lookup the connector from a custom LoginModule, i get the following error:

Path to object does not exist at java:comp, the whole lookup name is java:comp/env/eis/SAPJRA_CRMDC.#

The whole lookup in LoginModule looks

try 
		{
			initialcontext    = new InitialContext();
			connectionFactory = (ConnectionFactory) initialcontext.lookup("java:comp/env/eis/SAPJRA_CRM");
																		   

		} catch (Exception ex) 
		{
			location.errorT(ex.getMessage());
		}

Regards Oliver

[Former Member]

oliver,

Are you saying something like this won't work?

private void getJCOfromDestinationService()
	{
		try
		{
			ctx = new InitialContext();
			dstService = (DestinationService) ctx.lookup(DestinationService.JNDI_KEY_LOCAL);
			if (dstService == null)
				throw new NamingException("Destination Service not available");
			dst = (RFCDestination) dstService.getDestination("RFC", "ECCAUTH");
		}
		catch (DestinationException e)
		{			
			e.printStackTrace();
		}
		catch (RemoteException e)
		{			
			e.printStackTrace();
		}
		catch (NamingException e)
		{			
			e.printStackTrace();
		}

		jcoProperties = dst.getJCoProperties();

	}