SAP Java JCO程序ID

Question

I have to get some data with java from a sap.

I want to use sap jco, the connection works fine. But the other company is telling me I have to register to a program id.

So I tried DestinationDataProvider.JCO_TPNAME in my connection Properties. But to retrieve some data, I have to call some SAP function? Or can the program somehow be executed?

The SAP team has no experience with java jco and I have not much experience with sap. Can anybody help me?

Answer 1

If you are able to connect to SAP destination, then in order to extract data you can call an SAP function module (which should be RFC enabled ).

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See the following example to execute an SAP function module using JCO (I assume that you are successfully able to connect to SAP).

1. Get the SAP destination

JCoDestination destination = JCoDestinationManager.getDestination( DESTINATION_NAME );

2. Get the function

JCoFunction function = destination.getRepository().getFunction(< NAME_OF_THE_FUNCTION >);

3. Set the importing parameters (if any)

function.getImportParameterList().setValue(< PARAMETER_NAME >, < PARAMETER_VALUE >);

4. Execute the function

function.execute(destination);

5. Get the return values from exporting parameters of the function module

function.getExportParameterList().getString(< PARAMETER_NAME >);

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Additionally, you can see the following link to see how to work with JCO.

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If you want to build an RFC server using JCO, the following link might be useful.

Answer 2

I had to build an JCO Server, where I can register to a program id and get updates from the SAP system. On my first step I tried to build a JCO Client, which was wrong