How to write Web Services in Sap Netweaver Composition Trial 7.1

[Former Member]

I recently downloaded

"EHP1 for SAP NetWeaver Composition Environment 7.1 - Preview Version SAP Evaluation Software"

and

"SAP Enhancement Package 1 for SAP NetWeaver 7.1 SP00".

I could not find much documentation with it. Can any one tell me what its good for.

Basically i wanna play around with web services / expose my own web services and call them using soap sonar or some custom client.

Can any one guide me how to write web services in this. What could i expose using web service in composition environment trial. I am doing some RnD on Sap intergeration with non sap systems using web services but i dont have the actuall SAP application installed.

-> Please point out the EXACT forum if this is not the right one.

Regards.

[Vlado · Accepted solution]

Hi Faisal,

There is plenty of information about CE here on SDN as well as in the online help library. For example, the CE [homepage|https://www.sdn.sap.com/irj/sdn/nw-ce] is a very good starting point.

Here is also a short [Overview of the SAP NetWeaver CE capabilities and IT scenarios|http://help.sap.com/saphelp_nwce10/helpdata/en/45/ff9fc1d8986c06e10000000a1553f6/frameset.htm].

Now, since you're particularly interested in Web service development, I'd recommend to go through this section of the online help: [Creating and Configuring Web Services and Web Service Clients|http://help.sap.com/saphelp_nwce10/helpdata/en/45/11b4961ea304a8e10000000a155369/frameset.htm]

You might also want to check [Composing Services with CAF|http://help.sap.com/saphelp_nwce10/helpdata/en/49/80b066798a4ba2a1e26ce93997e839/frameset.htm] and [Consuming Enterprise Services|http://help.sap.com/saphelp_nwce10/helpdata/en/45/b4e38f7d2952f5e10000000a1553f7/frameset.htm].

Hope it helps!

-- Vladimir

[Former Member · Accepted solution]

Ok i checked the tutorial and links u sent my. Connected my developer studio to netweaver. Made a project in netweaver studio, created web service and published it.Did the steps untill i got to

http://help.sap.com/saphelp_nwce10/helpdata/en/45/11b4961ea304a8e10000000a155369/frameset.htm

Now here it is written the mechanism to test my service http://localhost:50000/HelloService/HelloBean?wsdl

but this address returns

500 Internal Server Error

Error: Fatal Error: java.lang.NullPointerException

Troubleshooting Guide https://sdn.sap.com/irj/sdn/wiki?path=/display/jsts/home

Details: No details available

So i m stuck here. Also some of the articles (which i went through) propably refer to some different versions of netweaver studio or AS. As there are some guis and options which are different in articles than in actual. Can i get anymore help, is there some other thing which i might have overlooked.

Thanks and Regards

[Vlado]

To answer your doubt about which forum: Please refer to the CE forum tip:

> SAP NetWeaver Composition Environment (CE) provides the tools and the environment for implementing and running composite applications. This forum is for general questions about developing composite applications with SAP NetWeaver CE. Please note that each of the different technologies that make up SAP NetWeaver CE has its own forum too - "tools" questions can be asked in those forums.

Actually, every SDN forum has a description like that.

Your question here is rather general (or not quite concrete about the specific technologies/frameworks you would like to use), so it's ok in the general CE forum. However, if it would be, for example, about developing and deploying Web services on the SAP NetWeaver AS Java, the [Java EE 5 @ SAP|; forum would have been most appropriate.

Cheers,

Vladimir