The document discusses web services, including an overview of what they are, how to create one, configure the environment, deploy it on a server, test it, and consume it. Specifically, it explains that a web service allows communication between devices over the web using XML, SOAP, and WSDL. It provides steps to create a web service class in Eclipse, generate the WSDL, deploy the WAR file and AAR file to Tomcat, and test it using the Web Service Explorer. Consuming a web service involves generating a client from the WSDL that can then call the web service operations.

1. Web Services
Presented By-
Shivinder Kaur

2. Table of Content
• Web Services - Overview
• Creating a Web Service
• Environment configuration required for creation
of Web Services
• Deploying a Web Service on a server
• Testing a Web Service
• Consuming a Web Service or Creation of Web
Service

3. Web Services- Overview

4. What is a Web Service?
• A method of communication between two
electronic devices over the Web
• A software system designed to support
interoperable machine-to-machine interaction
over a network

5. Web Service Terminology
• XML:
 Extensible Markup Language
 Set of rules for encoding documents in a format which is
both human-readable and machine-readable.
 Simple, Generalized and Usable across the Internet

6. Web Service Terminology
• Sample XML File-

7. Web Service Terminology
• SOAP:
 Simple Object Access protocol
 Protocol specification for exchanging structured information
 Uses XML Information Set for its message format

8. Web Service Terminology

9. Web Service Terminology

10. Web Service Terminology
• WSDL:
• Web Services Description Language
• Used for describing the functionality offered by a web service.
• It is an XML-based interface definition language.
• Used as a combination with SOAP and an XML Schema to provide Web
services.

11. Web Service Terminology
Functions
Exposed
Address/
Connection Point
Operations
Describes DataSoap Actions/
Message Encoding

12. Web Service Terminology
• Sample WSDL File

13. Web Service Terminology
• UDDI:
• Universal Description, Discovery, and Integration
• Directory for storing information about web services

14. Advantages
• Interoperability- Communication is possible
between source and the destination;
Irrespective of the technological differences.
• Usability- Logic once exposed can be used by
several other systems.
• Deployability- Use HTTP protocol, therefore,
can deploy Web Services even over the fire
wall to servers running on the Internet

15. Web Services RPC

16. Creating a Web Service

17. Environment Configuration
• Download:
• Binary Distribution
• War File Distribution
• Link-
http://axis.apache.org/axis2/java/core/download.cgi

18. Environment Configuration

19. Environment Configuration
• Set Environment Variables-
 JAVA_HOME :- C:Program FilesJavajdk1.6.0_21
 TOMCAT_HOME :- D:programsapache-tomcat-
6.0.29
 PATH :- C:Program FilesJavajdk1.6.0_21bin

20. Environment Configuration
• Setup runtime environment in Eclipse.
Windows >> Preferences >> Web Service >> Axis2 Preferences
Binary
Distribution

21. Create Web Service
Web Service
Creation
Approaches
Bottom Up Top Down
From Java Code From WSDL

22. Create Web Service
• Create Dynamic Web Project

23. Create Web Service

24. Create Web Service

25. Create Web Service
• Axis2 Web Services >> OK >> Next >> Finish

26. Create Web Service
• Create a class containing Business Logic

27. Create Web Service
• Create a Class to Expose as a Service

28. Create Web Service

29. Create Web Service

30. Create Web Service

31. Create Web Service

32. Create Web Service
• Click on Next

33. Create Web Service

34. Create Web Service
• Click Finish

35. Create Web Service

36. Create Web Service
• D:Genymede_WorkspaceTestProWebContentWEB-INFservicesMyClassWS

37. Create Web Service
• jar cvf MyClassWS.aar com META-INF
c:Create
f:File
v:name of
each file to be
added in jar

38. Deploying Web Service

39. Deploying Web Service
• Copy War file downloaded earlier to webapps folder:
C:Program Files (x86)Apache Software FoundationTomcat 6.0webapps

40. Deploying Web Service
• Copy the .aar file to
webapps>>axis2>>WEB-INF>>services
“C:Program Files (x86)Apache Software FoundationTomcat
6.0webappsaxis2WEB-INFservices”
• Restart the tomcat service

41. Deploying Web Service
• http://localhost:8090/TestPro/services/listServices

42. Deploying Web Service
• http://localhost:8090/TestPro/services/MyClassWS?wsdl

43. Deploying Web Service
• http://localhost:8080/axis2/

44. Deploying Web Service

45. Deploying Web Service
• META_INF instead of META-INF

46. Deploying Web Service

47. Deploying Web Service
• http://localhost:8080/axis2/services/MyClassWS?wsdl

48. Testing a Web Service

49. Testing a Web Service
• Web Service Explorer:
In built tool to test the web service.
Windows >> Preferences >> Web Services >> Test Facility
Defaults >> Web Service Explorer

50. Testing a Web Service

51. Testing a Web Service

52. Testing a Web Service
WSDL Main

53. Testing a Web Service
WSDL Main

54. Testing a Web Service

55. Testing a Web Service

56. Testing a Web Service

57. Testing a Web Service

58. Testing a Web Service

59. Testing a Web Service

60. Testing a Web Service

61. Consuming a Web Service
Client
Generation
While
Creating a
Web Service
Through
WSDL

62. Consuming a Web Service
(Created with a Web Service)
Axis 2 Client
Generates 2
files(Stub and
Callback Handler)

63. Consuming a Web Service
• Add the jar file: apache-httpcomponents-httpcore.jar

64. Consuming a Web Service

65. Consuming a Web Service
Through WSDL
• Create a Dynamic Web Project

66. Consuming a Web Service

67. Consuming a Web Service

68. Consuming a Web Service

69. Consuming a Web Service

70. Consuming a Web Service

71. Consuming a Web Service
• Same Structure is generated.
• Create a Client implementation class as we created before.

72. Consuming a Web Service
(Axis Implementation)

73. Consuming a Web Service

74. Consuming a Web Service

75. Consuming a Web Service

76. Consuming a Web Service

77. Summary
• Web Services - Overview
• Creating a Web Service
• Environment configuration required for
creation of Web Services and Clients
• Deploying a Web Service on a server
• Testing a Web Service
• Consuming a Web Service or Creation of Web
Service

78. Questions