Create SAP Web Service with SAP .Net Connector in 5 minutes

Dennis Wang

Microsoft / EAS /SAP

What is SAP .NET Connector• SAP product. Based on Microsoft .NET

Technology• Interact with SAP via RFC/SOAP• Fully integrated with Visual Studio.NET

• Managed Code

Feature Highlight

• Generates C# Proxy Classes for any .NET application integrations

• Supports RFC and SOAP • Supports qRFC, tRFC• Supports asynchronous SOAP calls• RFC client or RFC server

Common LanguageRuntime

.NETConnectorRuntime

WebServices

VB C++ C# …

Visual Studio.NET

Microsoft .NET

ProxyClass

Generator

SAP System

BOR

DDIC

Interface repository

RFC

SOAP

RFC LayerApplication

Run

time.NET Connector

Component (generated)

Design

time

SOAP Layer

Feature of Web Service

• It is ASP.Net Web Service• Hosted by IIS. Using HTTP protocol• Secure: SSL for connection. NTLM for

authentication. Role base authorization.• Single sign via NTLM GSSAPI• Platform Neutral. Can be accessed via http

protocol.• Strong versioning via XML Namespace

Steps to Create Web Service for RFC_Customer_Get

• Create a C# project for ASP.Net Web Service• Generate SAP Proxy via SAP .Net Proxy

Generator for RFC_Customer_Get• Open Proxy1.cs and change the following line

public void Rfc_Customer_Get(…) to

public virtual void Rfc_Customer_Get (…)

Steps to Create Web Service for RFC_Customer_Get (Continue)

• Open Service1.asmx and do the following modification

1. public class Service1 : SAPProxy1

2. public override void Rfc_Customer_Get (…)

3. Add these code in this mothedthis.Connection = SAP.Connector.SAPConnectionPool.GetConnection

(MyConnectionString);

base.Rfc_Customer_Get(Kunnr,Name1, ref Customer_T);

• Compile the code and you have the web service for this RFC.

ClientDomainA\denniswRun Window app andCall Web Service

Web Service runs under DomainA\ProcAcct credential. This account then calls SAP RFC

1. SAP check DomainA\ProcAcct in USRSYSACL

2. SAP check DomainA\dennisw in vusrextid

3. SAP check dennisw in USRACL

4. Run SAP process under dennisw account

How SAP Single Sign On work under ASP.Net Web Service

Set up single sign on for web service

• IIS Configuration– Disable anonymous access– Set up Windows Integrated Authentication

• Web Service Configuration– Generate encrypted user name and password via

aspnet_setreg.exe program. This value will then be set up in registry. Here we assume the user name is SAPCMDEV

– Add the following line in Web.Config

• <identity impersonate=”true” sername=”registry:HKLM\Software\SapWebService\Identity\ASPNET_SETREG,sername”

• password=”registry:HKLM\Software\SapWebService\Identity\ASPNET_SETREG,password” />

Set up single sign on for web service - Continue

• GSS Library– Requires on the server where Web Service is

located.– Copy the GSSNTLM.DLL to c:\windows\system32– If the GSSNTLM.DLL was copied to a folder other

then within the environment search path, you need to add the following line in system environment SNC_LIB=”file path\GSSNTLM.dll”

• Make sure to replace the gssapi32.dll with this GSSNTLM.dll if the old gssapi32.dll exists. The old gssapi32.dll does not work.

Set up single sign on for web service - Continue

• Create Entry in Table SNCSYSACL via SNC0• This table contains a list of trusted domain accounts or SNC.• Start SAP and run SNC0• Make sure to enable the RFC/CPIC/Ext ID options

Set up single sign on for web service - Continue

• Make sure all users who access SAP will have their User Accounts in USRACL or via SU01

• Mapping external users into SAP users

• Run SM30 and table VUSREXTID• Value: Work Area=NT. • Value: External ID = MYDomain\

dennisw

Set up single sign on for web service - Continue

• Program The Connection String with the following value:– SNC_MODE=1;– SNC_PARTNERNAME="p:" +

System.Security.Principal.WindowsIdentity.GetCurrent().Name; ‘ Web Service Process Account

– EXTIDDATA=User.Identity.Name; ‘Caller credential

– EXTIDTYPE=“NT”;

Access SAP Web Service via Microsoft InfoPath

ERP – RDBMS – HR - CRMERP – RDBMS – HR - CRMERP – RDBMS – HR - CRMERP – RDBMS – HR - CRM

Information WorkersInformation WorkersInformation WorkersInformation Workers Enterprise ApplicationsEnterprise ApplicationsEnterprise ApplicationsEnterprise Applications

XMLXMLWebWeb

ServicesServices

XMLXMLWebWeb

ServicesServices

You can use intelligent forms to interact with your existing applicationsYou can use intelligent forms to interact with your existing applicationsYou can use intelligent forms to interact with your existing applicationsYou can use intelligent forms to interact with your existing applications

How does InfoPath 2003 connect to SAP?

• Utilize SAP RFC and BAPI. • Generate RFC/BAPI proxy by using SAP .Net Connector• Create Web Service Wrapper around the proxy• Hosting/Publish the web service via WSDL• InfoPath Consume the web service

Demo

Resource• SAP .Net Connector: https://websmp103.sap-ag.de/connectors

• InfoPath 2003 SDK

– Available on microsoft.com under downloads

• InfoPath 2003, Technical Webcasts, Technical White Papers, Development Guides

– MSDN

– http://msdn.microsoft.com/office/understanding/InfoPath 2003/

• Visit http://microsoft-sap.com for information on:

– SAP at Microsoft

– SAP .Net Connector

– Upcoming customer workshops