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GUIDE TO CREATE A WEB SERVICE FROM A JAVA CLASS

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© 2007 SAP AG 1

GUIDE TO CREATE A WEB SERVICE FROM A JAVA CLASS

 Appl ies to:

SAP NetWeaver Developer Studio 7.0.11

Summary

Using this document anyone can easily create a Web Service from a java class in SAP NetWeaver; just youhave to fellow these steps.

 Author : Rajes Ghosh

Company: HCL Technologies Ltd

Created on: 6 June 2007

 Author Bio

Rajes Ghosh is working as a SAP NetWeaver Consultant for HCL Technologies Ltd.

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© 2007 SAP AG 2

Table of Contents

 Applies to: ........................................................................................................................................ 1 

Summary.......................................................................................................................................... 1 

 Author Bio ........................................................................................................................................ 1 

STEPS TO FELLOW ....................................................................................................................... 3 

1. CREATE A JAVA PROJECT....................................................................................................... 3 

2. CREATE PACKAGE & JAVA CLASS ......................................................................................... 3 

3. CONSTRUCT REQUIRED METHOD ......................................................................................... 4 

4. OPEN WEB SERVICE PERPECTIVE......................................................................................... 4 

5. CREATE WEB SERVICE ............................................................................................................ 5 

6. PROVIDE WEB SERVICE NAME, CONFIGURATION TYPE & CONFIGURATION NAME...... 5 

7. SELECT THE REQUIRED METHOD TO EXPOSE AS WEB SERVICE .................................... 6 

8. PROVIDE VIRTUAL INTERFACE & WEB SERVICE DEFINATION NAME............................... 6 

9. BUILD EAR FILE ......................................................................................................................... 7 

10. DEPLOY THE EAR FILE........................................................................................................... 7 

11. DEPLOYMENT FINISHED ........................................................................................................ 7 

12. OPEN WEB SERVICE NEVIGATOR TAB & REFRESH .......................................................... 8 

13. OPEN THE WEB SERVICE ...................................................................................................... 8 

14. TEST THE WEB SERVICE ....................................................................................................... 9 

15. TEST INPUT SCREEN............................................................................................................ 10 

16. OUTPUT SCREEN .................................................................................................................. 10 

17. REQUEST SOAP XML MESSAGE......................................................................................... 11 

18. RESPONSE SOAP XML MESSAGE ...................................................................................... 11 Related Content............................................................................................................................. 11 

Disclaimer and Liability Notice....................................................................................................... 12 

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GUIDE TO CREATE A WEB SERVICE FROM A JAVA CLASS

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STEPS TO FELLOW

1. CREATE A JAVA PROJECT 

Here we are creating the java project in SAP NetWeaver Developer Studio to create a java class. In that javaclass we will write down a method to expose that as web service.

2. CREATE PACKAGE & JAVA CLASS

Here we are declaring the a package to create the java class and also creating the java class as‘MyEMIClaculator ”.

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GUIDE TO CREATE A WEB SERVICE FROM A JAVA CLASS

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3. CONSTRUCT REQUIRED METHOD

Here EMICalculation is the required method in class MyEMICalculator , which we are going to expose as

Web Service.

4. OPEN WEB SERVICE PERPECTIVE

Open the Web Service Perspective by Clicking the Web ServicePerspective Icon pointed out in the picture.

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5. CREATE WEB SERVICE

This is the Web Service Perspective.

Click on the New Web Service 

Menu to get the Web service creationwidget.

6. PROVIDE WEB SERVICE NAME, CONFIGURATION TYPE & CONFIGURATION

NAME

This is the Web Service Creation Widget.

Enter the Web Service name, Configuration type &Configuration name.

Click Next button.

In configuration type, you will get 3 options. Herewe are taking simple soap for simplicity.

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7. SELECT THE REQUIRED METHOD TO EXPOSE AS WEB SERVICE

Select the method to expose as a Web service. Here

we are selecting one method. If java class has moremethod and if required then you can select morethan one method,

Click Next button.

8. PROVIDE VIRTUAL INTERFACE & WEB SERVICE DEFINATION NAME

Here we are entering the Virtual Interface and Webservice definition name.

You can just click to Finish button with the defaultvalues.

It is advisable that keep the default name.

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9. BUILD EAR FILE

In Java Explorer, you can see that virtual interface, web service definition & web service configuration hasbeen created.

Click on the Build EAR menu by right click to create the EAR file.

10. DEPLOY THE EAR FILE

Select the EAR file and right click on it. You will getDeploy menu.

Click on the Deploy menu to deploy it in J2EE Engine.

11. DEPLOYMENT FINISHED

You will get a message in Deploy OutputView that deployed finished message. Ifthere is any error then you will get thatinformation also.

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12. OPEN WEB SERVICE NEVIGATOR TAB & REFRESH

 After deployment if we Refresh the Local Serverthen you will find that new Web Service will beadded into the list.

13. OPEN THE WEB SERVICE

WS_MyEMICalculator  is the new Web Serviceadded in the list as in pointed out in picture.Open this Web Service.

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14. TEST THE WEB SERVICE 

Click on Test link to test the web service.

Test Screen

Click on the Method Name “EMICalculation” to test it.

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17. REQUEST SOAP XML MESSAGE 

Request is gone to the web service as a XML. Here we are showing the request XML message.

18. RESPONSE SOAP XML MESSAGE

Response is come from web service also as a xml message. So here is the response xml message.

Related Content

Please refer to this web page if you want to know more.

http://help.sap.com/saphelp_nw04/helpdata/en/30/581e3e6217b40be10000000a114084/frameset.htm

http://help.sap.com/saphelp_nw04/helpdata/en/30/581e3e6217b40be10000000a114084/frameset.htmhttp://help.sap.com/saphelp_nw04/helpdata/en/30/581e3e6217b40be10000000a114084/frameset.htm

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Disclaimer and Liabili ty Notice

This document may discuss sample coding or other information that does not include SAP official interfacesand therefore is not supported by SAP. Changes made based on this information are not supported and canbe overwritten during an upgrade.

SAP will not be held liable for any damages caused by using or misusing the information, code or methodssuggested in this document, and anyone using these methods does so at his/her own risk.

SAP offers no guarantees and assumes no responsibility or liability of any type with respect to the content ofthis technical article or code sample, including any liability resulting from incompatibility between the contentwithin this document and the materials and services offered by SAP. You agree that you will not hold, orseek to hold, SAP responsible or liable with respect to the content of this document.