LeverX SAP ABAP Tutorial - Creating and Calling Web Services

Jan 4, 2013Download as PPTX, PDF6 likes5,199 views

The SAP Web Application Server allows companies to extend their solutions by exposing and integrating Web services. The SAP NetWeaver Developer Studio provides an environment for publishing, discovering, and accessing Web services. Therefore, it allows the SAP Web Application Server to act both as a “server” and as a “client” for Web services.

Essential
SAP ABAP Tutorial
How To Use WEB Services In SAP ABAP
By Eugene Ostroumov

1 Copyrighted 2012 by LeverX, Inc.

Tutorial Overview
In this tutorial you will learn how to create and call WEB Services in
ABAP. Tutorial consists of two parts:
1) how to create WEB Service based on Function Module;
2) how to call WEB Service via ABAP
Each part is a step-by-step instruction that will guide you thru the
whole process of creation

2 Copyrighted 2012 by LeverX, Inc.

How to create WEB Service based on FM
Step 1
Creating a
function module
with
import and export
parameters

3 Copyrighted 2012 by LeverX, Inc.

How to create WEB Service based on FM
Step 2
As an example of
functional module
logic let’s extract
active users

4 Copyrighted 2012 by LeverX, Inc.

How to create WEB Service based on FM
Step 3
Mark the function
module as a
Remote-Enabled
Module

5 Copyrighted 2012 by LeverX, Inc.

How to create WEB Service based on FM
Step 4
Create a
Web Service
based on the
function module

6 Copyrighted 2012 by LeverX, Inc.

How to create WEB Service based on FM
Step 5
Enter a name and
description for the
Web Service

Name
Description

7 Copyrighted 2012 by LeverX, Inc.

How to create WEB Service based on FM
Step 6
The name of
functional module
is entered
automatically

8 Copyrighted 2012 by LeverX, Inc.

How to create WEB Service based on FM
Step 8
Enter the name of
the package and
transport request
or choose
Local Object

10 Copyrighted 2012 by LeverX, Inc.

How to create WEB Service based on FM
Step 9
Creation of Web
Service is finished
It will be activated
after pressing
“Complete” button

11 Copyrighted 2012 by LeverX, Inc.

How to create WEB Service based on FM
Step 10
After creation of Web Service it is important to get WSDL document. It is
main key for access to your Web Service. Use the URL or save it to file.
URL

Save to file

12 Copyrighted 2012 by LeverX, Inc.

How to create WEB Service based on FM
Step 11
The correctness
of the WSDL
document can be
checked in the
transaction
SOAMANAGER:
Path:
Business
Administration =>
Web-Service
Administration

13 Copyrighted 2012 by LeverX, Inc.

How to create WEB Service based on FM
Step 12
Web Service can
be found in the
transaction SICF
Path:
default_host =>
sap => bc =>
srt => rfc => sap

14 Copyrighted 2012 by LeverX, Inc.

How to call WEB Service using ABAP
Step 1
To call Web
Service it is
necessary to
create a proxy
object
Use transaction
SE80 to do this

15 Copyrighted 2012 by LeverX, Inc.

How to call WEB Service using ABAP
Step 2
Choose
“Service Consumer”
type of proxy

16 Copyrighted 2012 by LeverX, Inc.

How to call WEB Service using ABAP
Step 3
Select a source of
WSDL. In our case
it is “URL/HTTP
Destination”

17 Copyrighted 2012 by LeverX, Inc.

How to call WEB Service using ABAP
Step 4
Define URL of
WSDL Document
(Step 10 of creation
of Web Service)

18 Copyrighted 2012 by LeverX, Inc.

How to call WEB Service using ABAP
Step 5
Enter the name of
the package and
transport request
or choose
Local Object

19 Copyrighted 2012 by LeverX, Inc.

How to call WEB Service using ABAP
Step 6
Creation of Proxy
is finished. You
should activate it
after pressing
“Complete” button

20 Copyrighted 2012 by LeverX, Inc.

How to call WEB Service using ABAP
Step 7
Enter User name and
Password to read
WSDL Document
This step doesn’t
exist is case of local
file for WSDL
Document

21 Copyrighted 2012 by LeverX, Inc.

How to call WEB Service using ABAP
Step 8

Activate the Proxy

22 Copyrighted 2012 by LeverX, Inc.

How to call WEB Service using ABAP
Step 9
Now we need to Choose “Consumer Proxy”
create a local
logical port in
transaction
SOAMANAGER Search your Proxy by name
Choose your Proxy
Path:
Business Apply Selection
Administration => Create Logical Port
Web-Service
Administration

23 Copyrighted 2012 by LeverX, Inc.

How to call WEB Service using ABAP
Step 10
Enter general
configuration
settings
You can use
WSDL document
or do it manually

24 Copyrighted 2012 by LeverX, Inc.

How to call WEB Service using ABAP
Step 11
Save logical port
after it is
generated

Save

25 Copyrighted 2012 by LeverX, Inc.

How to call WEB Service using ABAP
Step 12
REPORT zws_call.
Now everything is done DATA: lr_proxy TYPE REF TO zws_co_z_get_active_users.
DATA: o_err TYPE REF TO cx_root.
and you can call Web DATA:
DATA:
output TYPE zws_zws_users_response.
input TYPE zws_zws_users.

Service from your ABAP DATA: ls_item TYPE LINE OF zws_zws_users_response-users-item.

TRY.
program CREATE OBJECT lr_proxy
EXPORTING
logical_port_name = 'GET_USERS'.
CATCH cx_ai_system_fault INTO o_err.
Here is an example of a MESSAGE o_err TYPE 'I'.
ENDTRY.
input-rfc_only = space.
report that shows all active TRY.
CALL METHOD lr_proxy->zws_users
users EXPORTING
input = input
IMPORTING
output = output.
CATCH cx_ai_system_fault INTO o_err.
MESSAGE o_err TYPE 'I'.
CATCH cx_ai_application_fault INTO o_err.
MESSAGE o_err TYPE 'I'.
ENDTRY.

LOOP AT output-users-item INTO ls_item.
WRITE: / ls_item-bname, ls_item-tcode, ls_item-term.
ENDLOOP.

26 Copyrighted 2012 by LeverX, Inc.

Conclusion
Web Services allow to increase functionality of your system
and leverage your investments

Mobile applications

Web applications WEB
Another systems Your SAP system

27 Copyrighted 2012 by LeverX, Inc.

Contact Information

Please contact us for more information about our services or solutions available.

LeverX, Inc.
800 West El Camino Real, Suite 180
Mountain View, CA 94040 USA
Tel: (650) 625 – 8347
Web Site: www.LeverX.com
28 Copyrighted 2012 by LeverX, Inc.

The document discusses working with ABAP proxies, including: - Generating provider and consumer proxies from objects in the Enterprise Services Repository - Implementing provider proxies by adding application code to the generated class - Creating runtime configurations using the SAP NetWeaver Administrator to enable calling a Web service - Regenerating proxies if the underlying objects change or deleting proxies

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LeverX SAP ABAP Tutorial - Creating and Calling Web Services

1. Essential SAP ABAP Tutorial How To Use WEB Services In SAP ABAP By Eugene Ostroumov 1 Copyrighted 2012 by LeverX, Inc.

2. Tutorial Overview In this tutorial you will learn how to create and call WEB Services in ABAP. Tutorial consists of two parts: 1) how to create WEB Service based on Function Module; 2) how to call WEB Service via ABAP Each part is a step-by-step instruction that will guide you thru the whole process of creation 2 Copyrighted 2012 by LeverX, Inc.

3. How to create WEB Service based on FM Step 1 Creating a function module with import and export parameters 3 Copyrighted 2012 by LeverX, Inc.

4. How to create WEB Service based on FM Step 2 As an example of functional module logic let’s extract active users 4 Copyrighted 2012 by LeverX, Inc.

5. How to create WEB Service based on FM Step 3 Mark the function module as a Remote-Enabled Module 5 Copyrighted 2012 by LeverX, Inc.

6. How to create WEB Service based on FM Step 4 Create a Web Service based on the function module 6 Copyrighted 2012 by LeverX, Inc.

7. How to create WEB Service based on FM Step 5 Enter a name and description for the Web Service Name Description 7 Copyrighted 2012 by LeverX, Inc.

8. How to create WEB Service based on FM Step 6 The name of functional module is entered automatically 8 Copyrighted 2012 by LeverX, Inc.

9. How to create WEB Service based on FM Step 7 Choose a profile for Security Settings 9 Copyrighted 2012 by LeverX, Inc.

10. How to create WEB Service based on FM Step 8 Enter the name of the package and transport request or choose Local Object 10 Copyrighted 2012 by LeverX, Inc.

11. How to create WEB Service based on FM Step 9 Creation of Web Service is finished It will be activated after pressing “Complete” button 11 Copyrighted 2012 by LeverX, Inc.

12. How to create WEB Service based on FM Step 10 After creation of Web Service it is important to get WSDL document. It is main key for access to your Web Service. Use the URL or save it to file. URL Save to file 12 Copyrighted 2012 by LeverX, Inc.

13. How to create WEB Service based on FM Step 11 The correctness of the WSDL document can be checked in the transaction SOAMANAGER: Path: Business Administration => Web-Service Administration 13 Copyrighted 2012 by LeverX, Inc.

14. How to create WEB Service based on FM Step 12 Web Service can be found in the transaction SICF Path: default_host => sap => bc => srt => rfc => sap 14 Copyrighted 2012 by LeverX, Inc.

15. How to call WEB Service using ABAP Step 1 To call Web Service it is necessary to create a proxy object Use transaction SE80 to do this 15 Copyrighted 2012 by LeverX, Inc.

16. How to call WEB Service using ABAP Step 2 Choose “Service Consumer” type of proxy 16 Copyrighted 2012 by LeverX, Inc.

17. How to call WEB Service using ABAP Step 3 Select a source of WSDL. In our case it is “URL/HTTP Destination” 17 Copyrighted 2012 by LeverX, Inc.

18. How to call WEB Service using ABAP Step 4 Define URL of WSDL Document (Step 10 of creation of Web Service) 18 Copyrighted 2012 by LeverX, Inc.

19. How to call WEB Service using ABAP Step 5 Enter the name of the package and transport request or choose Local Object 19 Copyrighted 2012 by LeverX, Inc.

20. How to call WEB Service using ABAP Step 6 Creation of Proxy is finished. You should activate it after pressing “Complete” button 20 Copyrighted 2012 by LeverX, Inc.

21. How to call WEB Service using ABAP Step 7 Enter User name and Password to read WSDL Document This step doesn’t exist is case of local file for WSDL Document 21 Copyrighted 2012 by LeverX, Inc.

22. How to call WEB Service using ABAP Step 8 Activate the Proxy 22 Copyrighted 2012 by LeverX, Inc.

23. How to call WEB Service using ABAP Step 9 Now we need to Choose “Consumer Proxy” create a local logical port in transaction SOAMANAGER Search your Proxy by name Choose your Proxy Path: Business Apply Selection Administration => Create Logical Port Web-Service Administration 23 Copyrighted 2012 by LeverX, Inc.

24. How to call WEB Service using ABAP Step 10 Enter general configuration settings You can use WSDL document or do it manually 24 Copyrighted 2012 by LeverX, Inc.

25. How to call WEB Service using ABAP Step 11 Save logical port after it is generated Save 25 Copyrighted 2012 by LeverX, Inc.

26. How to call WEB Service using ABAP Step 12 REPORT zws_call. Now everything is done DATA: lr_proxy TYPE REF TO zws_co_z_get_active_users. DATA: o_err TYPE REF TO cx_root. and you can call Web DATA: DATA: output TYPE zws_zws_users_response. input TYPE zws_zws_users. Service from your ABAP DATA: ls_item TYPE LINE OF zws_zws_users_response-users-item. TRY. program CREATE OBJECT lr_proxy EXPORTING logical_port_name = 'GET_USERS'. CATCH cx_ai_system_fault INTO o_err. Here is an example of a MESSAGE o_err TYPE 'I'. ENDTRY. input-rfc_only = space. report that shows all active TRY. CALL METHOD lr_proxy->zws_users users EXPORTING input = input IMPORTING output = output. CATCH cx_ai_system_fault INTO o_err. MESSAGE o_err TYPE 'I'. CATCH cx_ai_application_fault INTO o_err. MESSAGE o_err TYPE 'I'. ENDTRY. LOOP AT output-users-item INTO ls_item. WRITE: / ls_item-bname, ls_item-tcode, ls_item-term. ENDLOOP. 26 Copyrighted 2012 by LeverX, Inc.

27. Conclusion Web Services allow to increase functionality of your system and leverage your investments Mobile applications Web applications WEB Another systems Your SAP system 27 Copyrighted 2012 by LeverX, Inc.

28. Contact Information Please contact us for more information about our services or solutions available. LeverX, Inc. 800 West El Camino Real, Suite 180 Mountain View, CA 94040 USA Tel: (650) 625 – 8347 Web Site: www.LeverX.com 28 Copyrighted 2012 by LeverX, Inc.

LeverX SAP ABAP Tutorial - Creating and Calling Web Services

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