Java Web Services

nTier Training
Acworth, Georgia, United States

Course Format: Classroom | E-learning | Virtual Class | Online/Live | On-site/In-house | Blended | Self-paced

Course Description:

'' nTier’s Developing Java Web Services training class prepares Java programmers to develop interoperable Java Web services and using SOAP, WSDL, and XML Schema. Students get an overview of the interoperable and Java-specific Web services architectures, and then learn the standard APIs for SOAP messaging and WSDL-driven, component-based service development. Both document-style and RPC-style messages and services are covered in depth.

The introductory chapters give overviews of the consensus architecture for interoperable Web services, including the WS-I Basic Profile, and the Java Web services architecture as codified by the J2EE 1.4 specification, including SAAJ and JAX-RPC. These chapters are meant to be equally useful to developers and non-developers �project managers, analysts, technologists and support staff.

There is a great deal of hands-on demonstration of running Web services, inspecting SOAP traffic, WSDL definitions, and a little bit of Java code, but no Java coding. The focus is on the architecture itself, and on the roles that various protocols, APIs, tools, and application components play in a working Web service and/or client. The course then gets down to the various brass tacks: students learn the Simple Object Access Protocol (SOAP) 1.1, and acquire skills in using the SOAP with Attachments API for Java (SAAJ) and the Java API for XML Messaging (JAXM) to build "low-level" SOAP- based Web services and clients, in which the programmer is responsible for element-by- element content of the SOAP message. Students will learn to read SOAP and to write it by hand, and then will proceed to use the Java APIs to develop servlets that respond to SOAP/HTTP messages.

The course then moves to "high-level" services: component-based development using the Web Services Description Language (WSDL) to define interoperable messaging models and the Java API for XML-Based RPC (JAX-RPC) to automate the SOAP messaging for remote procedure calls between objects. JAX-RPC abstracts almost all the transport-level implementation �SOAP over HTTP �and this allows the Java developer to concentrate on application and service specifics. (In this way JAX-RPC is analogous to Java RMI and the EJB architecture: SOAP/HTTP is treated as nothing more or less than an RPC transport protocol.)

Students get hands-on experience in developing Web services starting either from WSDL descriptors or from existing J2EE applications. Both servlet and EJB endpoint models are studied, as is the management of SOAP headers using JAX-RPC handler chains. Finally, the course covers advanced techniques including SOAP attachments (using either SAAJ or JAX-RPC), EJBs and JSPs as Web services and clients, and Java Web-service security.

Java Web Services Training Learning Objectives

Describe the motivation for developing and using Web services in business software.
Describe the Web services architecture.
Describe common scenarios for Web-service implementation and client-side use.
Describe the Java Web services architecture and the requirements of J2EE 1.4.
Understand the importance of SOAP to the Web services architecture.
Read, understand and write SOAP messages.
Understand the role of JAXM and SAAJ in building low-level Java Web services.
Build a Java Web service as a JAXM/SAAJ servlet.
Implement simple point-to-point SOAP communications from a client application.
Mix and match SAAJ, SAX and DOM code in a Web-service implementation.
Understand the role of WSDL in providing type information for Web services.
Write WSDL documents to describe messages, interfaces and services.
Understand the role of the JAX-RPC in the Java Web services architecture.
Identify the alternatives for development paths through Java code and WSDL
artifacts on server and client sides, and describe the advantages of each.
Understand the standard mappings between WSDL, XML Schema and Java.
Analyze Java domain models and identify the useful JAX-RPC types.
Add a SOAP interface to an existing Java Web application by generating SOAP
messaging code using JAX-RPC tools.
Build a Java Web service based on an existing WSDL document.
Build a Java Web-service client based on a WSDL document.
Describe the relationship between the EJB 2.1 and JAX-RPC 1.0 specifications, and
how EJBs can implement Web-service endpoints.
Add a SOAP interface to an existing system of EJBs, and build an EJB
implementation of a Web service based on a predefined WSDL descriptor.
Implement a simple Web service using JSP and JSTL XML tags.
Implement a JSP Web-service client using custom tags that wrap JAXM.
Understand the lifecycle and context of JAX-RPC services as J2EE components.
Describe the use of the JAX-RPC message context in managing SOAP headers.
Implement a JAX-RPC message handler to adapt an existing Web service.
Implement a session-aware JAX-RPC Web service that relies on HTTP sessions
based on cookies.
Create, send, receive, and read SOAP attachments using SAAJ or JAX-RPC.
Describe the various techniques for securing Java Web services available from J2EE
and various XML specifications. ...''

Elements of this syllabus are subject to change.

Phone:(866) 526-3921

School Address/Venue(s):

3330 Cobb Pkwy NW Suite 17-301, Acworth Georgia 30101 USA

Jobs & Resumes: Acworth
Houses & Roommates: Acworth

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