SAP Cloud SDK for JAVA: Acces On-Premise System via localhost

[TikeerGuo]

Hello,

I followed this blog post to access an OData service with the Cloud Platform SDK. I Used a custom OData Service instead of the standard Businesspartner OData service and a R3 ERP on-Premise backend system instead of S/4 HANA.

If I deploy the app to my Cloud Foundry subaccount it is working fine and my OData service is executed via Cloud Connector and destination service on my on-premise backend.

If I try to execute the same application on the local tomee server the on-premise backend system is not reached.

My destination on my subaccount looks like this:

If I pass all the information (URL,User,Password) to the local destination it is not working...

The same erroppr apperas on executing the integration tests.

What must I do to access my on-premise backlend from localhost?

Best regards,

Chris

[TikeerGuo]

Hi Chris,

I also follow this blog, in cloud connector Cloud To On-Premise, configured HTTPS protocol to s4hana op system, then configure HTTP destination in BTP and check connection works(and use this HTTP destination to do other testing such as call s4hana data from postman, it works).

But i follow the blog, after deployment to BTP, the hello world servlet can be called, but cannot call the data

. It just gives error internal server error.

And also try to run locally and also set the local destination variable to follow the blog, but face error environment variable vcap_services is not defined. Do you have any idea?

Thanks lot.

[christoffer_fuss]

Hi Matthias,

thnaks for helping 🙂

I am using the newest version 3.8.0. of the SDK.

I changed the enviroment variable to this:

set destinations=[{name: "saperp", url: "http://dt1.https:11", username: "USER", password: "PASSWORD","proxyType": "on-premise"}]

It is still not working that way. Or must I pass the "proxyType" in the properties array?
The proxy server is specified in the Cloud Connector and I thought this information is taken.
Should I pass the proxy information again in the enviorment varaible?

The code for the destination was copied from the blog:

 private final ErpHttpDestination destination = DestinationAccessor.getDestination("saperp").asHttp().decorate(DefaultErpHttpDestination::new);

Best Regards,

Chris

[matthiaskuhr]

Hi Chris,

I think you might need to not use quotes for the proxyType. Could you check that? If that dosen't do the trick we'll need to debug into the application and see which values are stored in the destination once it's loaded and what the exact error + stack trace is.

Best, Matthias

[christoffer_fuss]

Hi Matthias,

I tried it again without the quotes and it is still not working. Have you seen the answer from Marco? He is saying that this scenario is not possible. Are you sure that your way should work?

Best regards,

Chris

[matthiaskuhr]

Hi Chris,

yes Marco is right, I wasn't aware of the Cloud Connector.