Requirements for the development of ABAP web services...

Recently at TechEd in Vienna I saw a demo of the development of an ABAP service. It all looked fairly easy, so when I came back I decided to try it out for myself. However, this mission seems to be compromised by the development environment not playing along. I've tried to encapsulate a small RFC function module inside af service on an IDES ECC 6.0 system and that went fairly well until I wanted to test the service.
At some point it is understood that one should setup a reference to a J2EE system in the WSADMIN transaction and that caused me some troubles as it looks like the IDES system that I tried it on doesn't have a java stack. How could I check whether that is true? I then tried to test the service directly under maintain service within WSADMIN and it sends me a popup screen and asks me to logon. After logging on the browser claims an internal error has happened.
What do I do now? Where do I start to check if everything is setup the way it should be? Is there a note or a how to guide somewhere?
Best regards,
Anders

Hello,
For creating and hosting ABAP web Services, you do not need JAVA stack. However, for testing Web Services using Web Service Navigator (from SOAMANAGER), you need J2EE stack.
If you are invoking Web Service from SOAPUI, .NET or some other third party tool, you need to create End Point for the service using SOAMANAGER and provide the Porttype WSDL to the third party system.
Thanks,
Venu

Similar Messages

A Quality report as a tool for the Quality management of Web services

Hi everybody,
I would like to explain and discuss my current research project with you:
The differentiation from competitors is crucial for the economic success of a product. This differentiation can be achieved in addition to price and the date of the market entry through the product quality. To differentiate the quality of products, it is necessary to distinguish between several relevant product characteristics, to determine their values, to evaluate these values and to relate this evaluation to the evaluation of other products. Techniques for the determination of the quality of a product are used in many areas of the quality management, e.g. in the quality assessment.
Web Services are software systems supporting a machine-machine interaction over a network. Web services are often used as modules in different software architectures, especially in Service-oriented architectures (SOA).
In the course of quality management of a Web service applied in software consequently needs appropriate procedures and quality models as means to determine the quality. As there is a lack, research is needed in this field.
In order to eliminate the described deficit, a procedure is to develop that helps to determine the quality of a Web service. A report is conceivable which integrates all relevant views, all influences on the quality and all phases of the life cycle of a Web services.
During the research a lot of similarities between Life cycle assessments of environmental management and the quality management have been identified. These similarities include e.g. principles, procedures and the terminology. Since the Life cycle assessments relate on the product life cycle, on the stakeholders and on all relevant product characteristics, an adaption of the method on the quality management of software seems to be promising.

I would like to answer the following two research questions:
- Is it possible to adapt the principles and procedures of Life cycle assessment and Sustainability reporting to the quality management of Web services?
- Is a quality report based on these findings an appropriate tool for quality management?
Do you have any experiences with the quality management of Web services? Which procedures do you use to determine the quality of Web services? How are your experiences with that procedures? Where are their weaknesses?
Edited by: Bastian Grabski on Jan 7, 2010 11:36 AM

How to consume the Abap web service in Java web-dynpro

Hi Everyone,
I want to consume ABAP web service in java web dynpro.
so when i tried to create model in java web-dynpro, it gave me an error message saying "Invalid WSDL or WSDL not found".
i think this error message is because, to access the WSDL of abap web-service, we need username and password, but the dialog box in java web-dynpro is not programmed to take username and password from us and send it to the server to get the WSDL.
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.
So, please help me to consume the abap web service in java web-dynpro.
Thanks in advance
Regards
Vikas

Hi Vikas ,
while creating a model in web-dynpro try to use the "import web service model" option and if you are using local server choose the local server option so that you can get the available web services which are in server, select one among them and continue you process.I think this is the some what easy way .
If you want use the URL for wsdl better to once test the available service in server and copy that WSDL URL and paste over WSDL textbox.
I think this is pretty help ful to you
Best Regards
Srikatnh

Problem with ABAP Web service

Hello Experts,
Some unusual thing is happening.
Till this time my scenario was HTTP to RFC. So i have imported RFC in XI and its structure was perfact.
Tables having cardinality as 1...1, and fields were having cardinalities as 0....1.
Now we have planned to switch to the proxies and ABAP Web services. I have created the ABAP Web service with the same function module and imported it into the External definations.
When i am trying to use it into the mapping, Table cardinalities are 1....1 and fields are also having cardinalities as 1...1.
Now because of that i hv to map all the fields with some constants, but m not comfortable with it as there are nearly 1000 fields.
Do anyone of you have any idea what might be the problem? or how can i solve it.
Hope the question is clear.
Please help in this problem.
Thanks,
Hetal

Hello Hetal,
This is happening because when you genarte the Webservice out of a Function Module, all the fields in your are mendatory in the generated WSDL.
This can be avoided. The WSDL that you have generated for your webservice, can be manually edited in Stylus studio etc to change the cardinality and make it optional. We also did the same in one of our scenario and it is working fine.
As you are mapping these fields with constants, so it doen't make a difference if those are optional too.
Just edit the WSDL/xsd and reimport it.
Thanks
-Kulwant

Transporting abap web services

guys,
i am developing an abap web service from a bapi in my dev. environment. It works as expected. Now i want to export this service to our QA box but there seems to be a problem. The URL of this service in my dev box contains the sap-client=100 but the client number in my QA system that i want to test the service is 800. so, thats an issue. how can i prevent this from happening or resolve it ?? Also, is there anything else i need to carry out in this qa client after i import the service. Please advise.

Hi,
Since Netweaver Abap 7.0 SP14, you can only transport the design time configuration of web services.
You have to set up the run time configuration of web services with transaction SOAMANAGER in each system.
The reason is simple, the security, the port or the client may be different in each system.
Regards,
Olivier

Are the WLS 9.1 Web Service Ant Tasks ready for prime time?

I am trying to create a Proof of Concept (POC) for Enterprise and B2B Services at Wendy's Int'l, Inc.
As part of this POC, I created a WSDL for an in-house service and then used the wsdlc and jwsc Ant Tasks to translate this WSDL to Java classes and ultimately (I hoped) a deployable services.
In this document, I describe the issues I encountered setting up what I consider to be a simple POC.
I'll try to attach my WSDL file and build.xml so you can follow along.
I'll also try to attach my CSS file so you can compare how the generated WSDL appears in the Browser to the way I want it to appear.
If attachments are not allowed on these forums, then I will wait and see if there is interest in those documents before I paste them under this topic.
Some preliminary information about my environment.
Environment:
 Windows XP Pro SP2
 WebLogic 9.1
 Java 1.5.0_04
Service Name:
 AppRelease
Note: If I modify my WSDL (perhaps to add a new Operation or to change the definition of an element) and run wsdlc again, the AppReleaseSOAPPortImpl.java file is overwritten For this reason, I implemented my service logic in a class called AppReleaseServiceImple.java.
Now, for the issues.
1. Bug:
In the WSDL generated by wsdlc, the wsdl:part child of the wsdl:message tag is erroneously prefixed with a colon.
This occurs whether or not I specify a prefix for the http://schemas.xmlsoap.org/wsdl/ namespace.
Work around: Extract the wsdl from the jar file, fix it and add it back into the jar.
2. Bug:
In the WSDL generated by wsdlc, the wsdl:input and wsdl:output children of the wsdl:operation child of wsdl:portType tag are erroneously prefixed with a colon. Like 1 above, this occurs whether or not I specify a prefix for the http://schemas.xmlsoap.org/wsdl/ namespace.
Work around: Extract the wsdl from the jar file, fix it and add it back into the jar.
The error message generated by Bugs 1 and 2 is not helpful in diagnosing the problem:
[jwsc] Error at line:46 col:7 ':' expected [?! -- [CDATA[ ]
3. Bug:
In the WSDL generated by wsdlc, the documentation elements have all of my html elements stripped out, as well as my xhtml and wsdl namespace references. This completely negates one of the best features of the documentation tag, being able to present the WSDL in a browser as a nicely formatted, human friendly document which is also the underlying WSDL that can be viewed when the person views the source document.
I label this as a bug because it greatly reduces the functionality of the resulting WSDL.
4. Annoyance:
The WSDL generated by wsdlc has all of my comments stripped out, except the comments in the xsd:schema section of the wsdl:types element. I would prefer that all my comments be left in the WSDL, but if comments must be stripped out then I think all of the comments should be stripped out.
5. Annoyance:
The WSDL generated by wsdlc has my CSS specification stripped.
Work around: I donâ€™t know if adding the CSS back will do any good because I have not yet created a deployable service (see the last issue below).
6. Annoyance:
The WSDL generated by wsdlc has different namespace prefixes than the ones I specified for my application's namespace and for the http://schemas.xmlsoap.org/wsdl/soap/ namespace.
Work around: Perform a find/replace on namespace prefixes "s0" and "s1" to return them to my prefered values.
Another thing I can do at this point is simply replace the generated WSDL in the jar file with my original WSDL. This would address issues 1 thru 6 above.
7. Annoyance:
The java source files created by wsdlc are put into a jar file. This makes it annoying when working within a traditional IDE like Eclipse because there is no way to reference the source files within the jar as working source.
Work around: Extract the source files from the jar and identify the resulting directory structure as part of the source structure of the project.
8. Bug:
The jwsc task complains if the same parameter name is used in multiple operations. I received the following Errors from jwsc:
[jwsc] C:\IDE\workspace\Acre-WL9.1\AppReleaseSOAPPort.java 0:0
[jwsc] [ERROR] - Parameter element "{http://acre.services.wendys.com/AppRelease/}garRequest" is not unique across document/literal bare WebService.
Since the operation names are unique, I see no reason to also require uniqueness in the parameter names used by those operations.
Work around: Use unique element names for the input parameters of the services operations.
9. Bug:
Once items 1, 2 and 8 above are taken care of, jwsc fails with the following error:
java.lang.AssertionError: java.lang.ClassNotFoundException: weblogic.j2ee.descriptor.ApplicationBeanImpl
This seems to be due to the weblogic.jar file not being in the System Classpath.
However, I should note that when I set verbose="on" and debug="on" in the jwsc ant task, there was a message from the task which stated "[jwsc] [search path for class files: [big freakinâ€™ jar list]". In the big freakinâ€™ jar list, I did find weblogic.jar and weblogic.jar has the required ApplicationBeanImpl. This indicates to me that the jwsc task does not fully honor either its classpathref attribute, nor an embedded classpath element.
Work around: Make sure the weblogic.jar is in the System Classpath.
10. Bug:
I fixed bug #9 by running a setDomainEnv script and then ran my ant task. This time I received the following output:
ant build-serviceBuildfile: build.xml
build-service:
[jwsc] 1 JWS files will be processed.
[jwsc] Processing JWS: C:\IDE\workspace\Acre-WL9.1\src\com\wendys\services\acre\AppReleaseServiceImpl.java
[jwsc] JWS: C:\IDE\workspace\Acre-WL9.1\src\com\wendys\services\acre\AppReleaseServiceImpl.java Validated.
[AntUtil.deleteDir] Deleting directory <some temporary directory>
BUILD FAILED
java.lang.ExceptionInInitializerError
At this point, I am completely stymied about how to proceed.
I wonder what new issues await once this 10th issue is addressed.
Really, is this tool set ready for prime time?

Sorry to hear you are having so many issues with using the WLS 9.1 web service Ant tasks, inside of Eclipse.
I generally create a User Library for the couple weblogic jars needed, and use it (the User Library) in my Eclipse projects that I create JWSes in. 
I also have a separate WebLogic Library in Eclipse (actually 2 libraries since I work with WL 8.1 and now WL 9.1). As you may know, one of the long-standing issues with the Ant integration within Eclipse is the fact that Ant, being an External Tool, does not receive the Project-specific Paths/Libraries. However, since most Java-relevant Ant tasks can take classpath and classpathref attributes, this is usually not an issue. In the case of the BEA-supplied wsdlc Ant task, it is apparent from the verbose/debug console output that wsdlc can see the jars in its classpathref, but it ignores those references when resolving class references and instead only uses the system classpath.

I've only needed the weblogic.jar and xbean.jar, not all the ones you mentioned in an earlier thread of this post. 
I have not tried to winnow down exactly which jars are required. I simply included all the jars that exist and were added to the system classpath by the setDomainEnv.bat file created by WebLogic 9.1.

Afterwards, I create an Ant Builder to build the JWS Web Service EAR, as opposed to fiddlin' with Eclipse. 
I too use Ant to build my deployable archives. Eclipse is simply my IDE of choice. I validated that all the issues I listed occurred when running Ant from the command line.

If you are interested in how I do it, send me an e-mail (to [email protected]), and I'll send you a zip of one of these JWS projects. The build.xml script for the project, takes care of a lot of the "annoyances" you mentioned, one of which I think is not accurate. I have never had a situation where the wsdlc Ant task "overwrote" my XXXImpl.java file.. 
Since I'm doing a POC to determine how we want to proceed with developing Web Services and an SOA in general, I tried to perform the same tasks using Axis 2 1.0, the WebLogic 9.1 tools, and XFire 1.1. Overwriting the Impl class is a common failing in the tools which take a WSDL and create Java source files for all three frameworks.

Try my scenario. Add another operation to an existing WSDL, and run the wsdlc Ant Task. The old IMPL class will be over-written.

Because of this, I have a separate Impl class and I make sure that all its methods and annotations match the methods and annotations in the Skeleton Impl class created by wsdlc.

Maybe that's because I use the <exec> Ant task with jar.exe (the xvf options) in my build.xml, to only get what I need out of the .jar/.zip the wsdlc generates. I'm typically only interest in the interface class that my XXXImpl.java file needs to implements, because I use XMLBeans for the input args (and return values) of my web service operations. 
Perhaps. I am not using XMLBeans in any of the three frameworks because the resulting service seems to be lighter-weight in all three frameworks if XMLBeans is not used. I'm sure there will be scenarios where XMLBeans is preferred, but I have not encountered that case in this POC.

Regards,
Mike Wooten
Thanks for the follow-up.
Mike McAngus

Web Service Model for ABAP Web Service

Hi,
I have developed ABAP web service and called it using web service model in WD. The WS is working from WSNavigator. While calling it from WD, im getting the following exception:
Service call exception; nested exception is:
com.sap.engine.services.webservices.jaxrpc.exceptions.InvalidResponseCodeException: Invalid Response Code: (502) Proxy Error ( No data record is available ).
Is some setting required in R/3 where WS is created or on WAS where the WDAppl is deployed?
Regards,
Smruti

Hi Smruti,
Please try the following:
Go to Web Service model
Logical Port
Uncheck "Use HTTP Proxy" settings..
Also make sure the WAS has entry of R/3 in hosts files..
Regards,
Abhijeet

Hardware requirement for CE7.1 for the development purpose

Experts,
How to calculate the hardware requirement for using CE7.1 for the development purpose? Do you have some parameters or guidelines for it?
We will be using CE7.1 for the development of EP contents, Web dynpro, Web services and Guided procedures.
We need to calculate minimum hardware requirement for this purpose, but could not find the authorised document from SAP.
I searched in the SDN. It is available for NetWeaver 7.0 but not for CE7.1.
Any hints will be highly appreciated.
Regards,
sudeep

Hi Sudeep,
On the following links you will find the Composition Environment Product Availability Matrix and the installation guide of Composition Environment 7.1 Developer Edition.
SAP NetWeaver Composition Environment 7.1
https://www.sdn.sap.com/irj/sdn/go/portal/prtroot/docs/library/uuid/e0e9cc7b-0469-2a10-d3a8-f4f04b30fb0b
For accessing the Product Availability Matrix document the service marketplace access is required.
Best regards,
Yasar

Authorizations for testing of ABAP Web Services

Can somebody tell me which authorizations/roles I need to assign to a user with SAP WAS 6.40 ABAP so that he will be able to test a simple ABAP Web Service with the Java Service home page of this service?
I tried this with the roles SAP_BC_DWB_ABAPDEVELOPER and SAP_BC_WEBSERVICE_ADMIN but this seams not to be enough and I could not find a hint on how I could find out what is going wrong.
The user gets an error message on the top of the service home page when he submitted the service request:
"An error has occurred. Maybe the request is not accepted by the server:
Authority check failed"
The service is configured with standard authentication. On the service test page the user gets a login screen which he passes successfully. The error occurs afterwards when the services test is executed.
Many thanks!
Best regards, Birgit

Hi,
1. log on to SAP system with user XXX .
2. Do your steps to call webservice from JAVA Service home page - use the same user id for log on.
3. As soon as you see the error message as you mentioned
Run transaction SU53 in the target SAP system . This should tell you the authority object where the failure had happend.
Hope this helps.
Regards
Raja

How to get the list of values for a dynamic parameter using Web Services SDK?

I am struggling to get the list of values for a dynamic parameter of a report.I am using Java Web Services SDK ... I tried to use PromptInfo.getLOV().getValues() method but it does not work.First of all ... is this possible (to get the list of values for a dynamic param) using Web Services?Second of all, if this is possible, how should I do it ... it seems it works fine when running the report from CMC. It asks for DB logon info and after that it provides a list of values.Thx 

Your assumption is correct. We are trying to get the LOVs from the Crystal Report. I was not aware that this is not supported by Web Services SDK.We used Web Services SDK to integrated the Crystal Reports in our web application. We implemented some basic actions for reports: schedule, view instances, run ad-hoc reports.We encountered this problem when trying to run/schedule reports with dynamic parameters (a list of values from DB). We were unable to get the LOVs.Please let me know if you can think of an alternative to look at.Thanks a lot,Catalin

How to create a proxy to retrieve the xml file from web services

Hi Every one,
We have a requirment where we receive a xml file from Kenexa, a third party HR tool using a middleware tool. from SAP side We have to create a proxy to retrieve the xml file from web services by initiating call through middleware tool i used earlier.
these are the steps i intend to follow to accomlish the requirement.
1) middleware tool has to initiate the call to kenexa web services to receive the xml file when it is available.
2) On SAP we need to create a ABAP Proxy service provider to middleware where this file can be received.
Can any one guide me how i can create a proxy to retrieve the xml file from web services by initiating call through other middlewre (its not PI).
Any help would be really great, i am not a ABAP developer, so please help me with this. Thanks.

Thank for reply.
The computers are in different locations, but yes it's possible, the users in this enviroment are all local administrator of the machines, and we can distribute the script centrally from the DC automatically
Acrobat use Java, right? I'm not so expert in java, but something about it could not be so difficult to manage.
Do you know some place where i can get some info about JS and acrobat?

How to debug ABAP Web services from Microsoft Visual Studio

When developing .NET based Web services clients using Visual Studio that call Web services in SAP NetWeaver .NET developers would like to be able to debug inside SAP. In my blog <a href="/people/andre.fischer/blog/2007/02/07/how-to-debug-abap-web-services-from-microsoft-visual-studio to debug ABAP Web services from Microsoft Visual Studio</a> I would like to point .NET developers to the fact that SAP NetWeaver offers the option of external debugging to perform this task. Though the steps that have to be performed are described in the SAP Online Help I am sure that this option is not well known amongst the .NET developer community.

Hello WilliamIV,
>>How can I "configure" Visual Studio debugger to allow validation to work?
Since I do not have a VS2012 environment, according to your provided link, I created a test demo with VS2013, however, both ways catch the validation error:
If possible, you could have a try with VS2013 to see if it works or run the example on other machine with VS2012 to see if this is caused by the VS environment, in my side, I do not change any configuration, all are default.
If I misunderstood this issue, please feel free to let me know.
Regards.
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ABAP Web Service with tables

Hello,
 
 
We need to build a web service with a predefined message in our ERP (ABAP), without PI or WebAS JAVA.
 
 
We thought it should be a simple task, because we had no problem with many other applications and systems when building the same service, but were not able to build it with SAP ABAP, probably as a consequence of our lack of knowledge on ABAP SOAP runtime.
 
 
We have an external asynchronous process that delivers information to many other systems using web services (information diffusion). Concecuently, the web service call's structure is determined by the caller, so we have to fulfill this structure if we want to receive the info.
 
 
The owner of the process defined a very simple service call, in which one kind of "record" can be repeated 1 to n times:
 
 
 
 
 
 
<reglasSuscripcion>
 
 <!Zero or more repetitions:>
 
 <nombre>?</nombre>
 
 <valor>?</valor>
 
 <nombre>?</nombre>
 
 <valor>?</valor>
 
 <nombre>?</nombre>
 
 <valor>?</valor>
 
 
 <nombre>?</nombre>
 
 <valor>?</valor>
 
</reglasSuscripcion>
 
 
 
In order to receive this info, we have to implement an abap web service handler to accept this kind of call, the same way other applications/systems have already done.
 
 
We tried to build a RFC function call and create a web service with the wizard and it resulted in a web service with the following WSDL:
 
 
<soapenv:Envelope xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/" xmlns:urn="urn:sap-com:document:sap:soap:functions:mc-style">
 
 
 
 
 <reglasSuscripcion>
 
 <!Zero or more repetitions:>
 
 <item>
 
 <nombre>?</nombre>
 
 <valor>?</valor>
 
 </item>
 
 
 
 
<item>
 
 <nombre>?</nombre>
 
 <valor>?</valor>
 
 </item>
 
 </reglasSuscripcion>
 
 
 
 
We found two main problems:
 
 
1.- When "wrapping" the RFC as a WS with the wizard, for a table datatype it automatically includes the <item></item> tag, so we break the predefined calling rules.
 
 
2.- The namespace is fixed by the wizard, and we would like to use a common namespace for all the "susbscribers", logically, the namespace fixed by the information diffusion service.
 
 
We also tried to find info on the outside-in approach for building a web service from the WSDL, but all the info we found required the ESR and we have no PI, just the ERP.
 
 
Any ideas on how to proceed?
 
 
Thanks in advance,
 
 
Joseba M. Iturbe
 
 
Edited by: Soporte Desarrollo on Mar 5, 2010 10:56 AM

#2. I've recently had to "zap" some namespaces in an ECC5 system because the calling (TIBCO) system didn't appreciate the default SAP "urn" default - something to do with multiple colons in the address. There were, I think, just three table this affected, all VEP* ones. I think I should have been able to change these via the virtual interface in SE80 except that the ECC5 code was a bit "light" in this respect, so you may be able to do this now in SOAMANAGER in ECC6 (btw, I also had to re-save the WS definition within WSCONFIG and re-activate the virtual interfaces after this "zap" to generated the associated handler class again).
#1. Given your "name / value" pairs represent a complex type, then it might be better practice to have them as "item" which is probably why SAP proposes it this way... what does your custom function module parameter list look like?
Jonathan

Configuring PI SSL for communicating with third-party web services

Hi,
I'm trying to load a COMODO certificate into a J2EE environment running in NetWeaver 7 (no enhancement packs), in order to connect to an external web service using SSL
I have been looking at this reference:
http://help.sap.com/saphelp_nw70/helpdata/en/a0/a5d13f83a14d21e10000000a1550b0/frameset.htm
and in this document (and many others i've read) it talks about requiring a server key pair to support SSL.
http://help.sap.com/saphelp_nw70/helpdata/en/f1/2de3be0382df45a398d3f9fb86a36a/frameset.htm
My question is - is there a way to use the self-signed root CA certificates instead of having to generate CSRs and sign certs? I ask this because it seems completely impractical to have to generate key pairs for each SAP installation that is required to access a third-party web service.
Furthermore, the SSL connection may only be for the web service and I'd rather not have to ask that the entire J2EE server is switched to SSL in order to make this secure connection. I've recently discovered the AXIS framework for the SOAP adaptor however I'm not familiar with it and can't identify whether you could use this for the SSL handshake and avoid having to a) generate certificate key pairs and b) switch your J2EE server to SSL
Does anyone have experience connecting to a third-party service using VeriSign, COMODO or Thawte certificates and can clear this up for me?
Regards,
John

Did you resolve your issue?
I´m posting some comments that maybe can help newer administrators facing similar doubts.
I´m using NW PI 7.1 EHP1 also and some interfaces were developed for using an external site providing web services through SSL (HTTPS) connection.
As in browser navigation, secure sites protected with SSL has a certificate emited by a international CA. We didn´t perceive the "handshake" in the most of cases because normally the web browser has a group of trusted CAs loaded on its certificate store.
With SAP PI and its WAS Java a similar procedure occurs with a small difference. The WAS Java didn´t have the trusted CAs loaded on KeyStorage. So, when the adapter tries to establishing a connection with an HTTPS site (it is a background process) a "handshake" is required to accepting the certificate and produces a error.
We completes the handshake importing the entire certificate chain (you can upload the site´s certificate to your browser and export it as file) on Keytore under the Trusted CAs view.
Hope this can help someone. It´s an "easy" part of SSL communication.
Now I´m trying to configure the inverse: Some third party consuming the PI web services using SSL. I have an additional component on inbound/ incoming connections that is the SAP Web Dispatcher.
The Help.sap.com is the reference but as always its a little difficult to find the (sequential) path following the links (go ahead, go ahead, go ahead, go back, go back, go ahead)...
Regards,
Rodrigo Aoki

Calling abap web service from webdynpro

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()
    //@@begin wdDoInit()
    try
          Request_YYMJ_WS_TEST1_DEF1_yymjServiceWebTest1 reekvesta = new Request_YYMJ_WS_TEST1_DEF1_yymjServiceWebTest1();
          reekvesta._setPassword("userid");
          reekvesta._setUser("password");
          wdContext.nodeRequest_YYMJ_WS_TEST1_DEF1_yymjServiceWebTest1().bind(reekvesta);
          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();
          String msg = e.getLocalizedMessage();
          if ((msg==null) || (msg.length()==0))
               msg = e.getMessage();
          msgMrg.reportException(msg,true);
    //@@end
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();
          String msg = e.getLocalizedMessage();
          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

Requirements for the development of ABAP web services...

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