Developing Web services applications

This topic explains how to develop a Web service using the Web Services for Java 2 Platform, Enterprise Edition (J2EE) specification. Web services are structured in a service-oriented architecture (SOA) that makes integrating your business and e-commerce systems more flexible.

Before you develop the Web services you need to Set up a Web services development and unmanaged client execution environment .

WebSphere Application Server uses Web services standards developed for the Java language under the Java Community Process (JCP). WebSphere Application Server follows these standards:

SOAP Version 1.1
WSDL Version 1.1
Web Services for J2EE (JSR-109) Version 1.1
Java API for XML-based remote procedure call (JAX-RPC) Version 1.1
SOAP with Attachments API for Java (SAAJ) Version 1.2

WebSphere Application Server provides extensions to the JSR-101 and JSR-109 programming models. See Extensions to the JSR-101 and JSR-109 programming models for more information.

You can also use the WebSphere Development Studio for iSeries Version 6 development tool to develop Web services for WebSphere Application Server.

You can develop Web services in one of four ways:

ResultYou have developed a Web service.

What to do next

Assemble the Web service.

This topic presents what you need to assemble a Web service and in what order you should assemble the parts, for example an enterprise archive (EAR) file.

Sub-topics
Example: Developing a Web service from an EJB or JavaBeans implementation
Artifacts used to develop Web services
Mapping between Java language, WSDL and XML
Transport level security
Extensions to the JAX-RPC and Web Services for J2EE programming models
Java2WSDL command
WSDL2Java command
Using HTTP to transport Web services requests
Configuring HTTP outbound transport level security with the administrative console
Configuring HTTP outbound transport level security with an assembly tool
Configuring HTTP outbound transport-level security using Java properties
HTTP basic authentication
Configuring HTTP basic authentication with the administrative console
Configuring HTTP basic authentication with an assembly tool
Configuring HTTP basic authentication programmatically
Configuring additional HTTP transport properties using the administrative console
Configuring additional HTTP transport properties with an assembly tool
Configuring additional HTTP transport properties using wsadmin
Additional HTTP transport properties for Web services applications
Using the Java Message Service API to transport Web services requests
Using WSDL EJB bindings to invoke an EJB from a Web services client
Setting up a development and unmanaged client run-time environment for Web services
Developing a Web service from a Java bean
Developing a Web service from an enterprise bean
Developing a new Web service with an existing WSDL file using JavaBeans technology
Developing new Web services from an existing WSDL file using an EJB implementation