Proxying ABAP Web Service on NW CE

Hi,
Assume that we have a Web Service created in ABAP System and can be accessed anywhere.
We want to publish this web service to external 3rd party companies but don't want them to access directly SAP R/3 System.
One way is to create another Webservice on CE and call ABAP Web Service from there and also publish this CE Web Service.
But I remember that it is possible to create a Web Service Proxy on CE for anther Web Service.
Could you help me to choose the best option and also if there are sample solutions
regards

Hello,
I think you must create a Web Service proxy client and expose this client as a Web Service.
For creating your Web Service you must follow the outside-in approach:
1.Import the WSDL document from your ABAP system.
2.Generate the Java bean skeleton based on the imported WSDL.
This is the link to the help documentation: http://help.sap.com/saphelp_nwce10/helpdata/en/46/935a636110581de10000000a1553f7/frameset.htm

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Resolved through SAP Help. Refer SAP note# 0001403271.

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Hello All,
We are facing a problem with the webservice transport. The application consuming the service is working fine in CE 7.2 DEV. But after transport to CE 7.2 Quality, there is one service which is resulting in this error.
Invalid Response content type. Server returned code (500) with message <Internal Server Error> and content type <text/html; charset=utf-8>. Http proxy info: none
[EXCEPTION]
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Moderator Message: Please refrain from cross-posting. You need to raise a new thread because your issue is not the same as as what is being discussed in this thread. It just makes it easier for other users when searching for help as well. Please refer to the [Rules of Engagement|http://wiki.sdn.sap.com/wiki/display/HOME/RulesofEngagement] on SCN when asking or answering questions
Edited by: Trevor Naidoo on Aug 19, 2011 1:51 PM

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hi,
i have a problem in that i am trying to call an ABAP web service published from r/3 in webdynpro. when i browse to the url generated by the r/3 application server it asks for my r/3 user name and password (not to be confused with http proxy user name and password). now when i enter it, i can see the generated wsdl without a problem. pressing escape gives me the standard 401 error.
please note this is the r/3 username and password which i am required to enter. when i try to get to the webservice in webdynpro. here is my code:
public void wdDoInit()
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    try
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          wdContext.currentRequest_YYMJ_WS_TEST1_DEF1_yymjServiceWebTest1Element().setWfKunnr("0000000011");
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i have also tried it this way:
public void wdDoInit()
    //@@begin wdDoInit()
    try
          Request_YYMJ_WS_TEST1_DEF1_yymjServiceWebTest1 reekvesta = new Request_YYMJ_WS_TEST1_DEF1_yymjServiceWebTest1();
wdContext.nodeRequest_YYMJ_WS_TEST1_DEF1_yymjServiceWebTest1().bind(reekvesta);     wdContext.currentRequest_YYMJ_WS_TEST1_DEF1_yymjServiceWebTest1Element().modelObject()._setUser("userid");     wdContext.currentRequest_YYMJ_WS_TEST1_DEF1_yymjServiceWebTest1Element().modelObject()._setPassword("password");
wdContext.currentRequest_YYMJ_WS_TEST1_DEF1_yymjServiceWebTest1Element().setWfKunnr("0000000011");
wdContext.currentRequest_YYMJ_WS_TEST1_DEF1_yymjServiceWebTest1Element().modelObject().execute();
          wdContext.nodeResponse().invalidate();
    catch(Exception e)
          IWDMessageManager msgMrg = wdThis.wdGetAPI().getComponent().getMessageManager();
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          if ((msg==null) || (msg.length()==0))
               msg = e.getMessage();
          msgMrg.reportException(msg,true);
    //@@end
in both instances i get the error:
Service call exception; nested exception is: com.sap.engine.services.webservices.jaxrpc.exceptions.InvalidResponseCodeException: Invalid Response Code: (407) Proxy authorization required
please note
1. i am trying to test this on my local sap j2ee server, on my workstation. i am not deploying this as of yet to the portal.
2. i do have access to r/3.
3. the r/3 application server is in our corporate intranet, and therefore excluded from being looked up by our proxy.
4. our proxy DOES require a username and password. i added my user name and password to the webservice container section of the visual administrator, and excluded the r/3 server from the proxy list.
what am i missing?

Zafar,
Check the endpoint in generated WSDL. Probably there is a host name that is not in "exclude list" for proxy settings (like IP vs host name, or FQDN vs short host name).
Valery Silaev
SaM Solutions
http://www.sam-solutions.net

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HIII..
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In the documentation that follows, we assume that the reader is familiar with Web service standards and techniques. You will find a general introduction to the Web Services topic under Sun Microsystems, in the pages of W3C, and in the general explanations for standardization organization OASIS under the topic UDDI.
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·        The development environment for the J2EE Engine
·        Tools that support UDDI registration
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Processing of SOAP requests using the Internet Communication Framework
Web Services and the SAP Exchange Infrastructure
The SAP Exchange Infrastructure is a key area in SAP NetWeaver. The Exchange Infrastructure provides an open, process-oriented integration infrastructure for the unhindered flow of information and for XML-based message exchanges. Systems integrated using SAP XI exchange messages over the Integration Server.
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i came to this conclusion because i was able to successfully test my abap web-service in java portal. the java portal asked me the username and password to open the WSDL.
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I am working on PI but really very much new to the SOA concept.
But i have to prepare document which explains about all steps that we need to follow (technicallly) for the SOA implementation.
We are going to implement one Proof of Concept for SOA before going for the real project.
Can someone please help me and tell me what all the things i need to do for Proxy to Web Service Scenario in PI.
I hope i have made myself clear about it.
Thanks,
Hetal

Hi Gaurav,
Thanks for your advice.
I have one more question and i tried to explore SDN alot but didnt get satisfactory answer.
here is the situation:
My scenario is like :
.Net application = consumer
ECC = Provider
PI = broker
SR = Publish ES
I am using the Outside - In approach, where i am creating proxy structure in ESR and then creating/ Generating Proxy in ECC.
I am exposing my Inbound Interface on SR, so that the WSDL is available on SR.
Now the situation is, our consumer is asking data from us in different format.
I read on help.sap.com that via PI mapping it is possible.
But i am not understanding that consumer is using ECC WSDL to make a call, then even though mapping is there, how can they get response in their required format.
They are even providing us their WSDL. I am totally confused that in one interface how come two different WSDLs can work?
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I am even ready to use the same structure for my ECC which is provided by consumer, but then i dont see any outcome using PI.
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Consuming ABAP Web Service in Non SAP system

Hi
I have created an ABAP web service form the RFC and configured it in the SOAMANAGER. I have tested it in Web Service Navigator using the URL and it is working fine.
Now I am trying to access it from the Non SAP system using Java Code. I am able to access the WSDL using the URL from the step 1 but not able to receive any output when providing inputs.
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The User XIAFUSER has SAP-All-authorizations.
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Greetings
Hildegard
Message was edited by: Hildegard Winter

Check out, that the URL of the WebService is correct:
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Change the default values if necessary.
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Proxying ABAP Web Service on NW CE

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