This course provides experienced Java programmers with the skills to write new SOAP and REST web services, and access existing services. With this training, you also learn how to secure web services using both Java-specific and language-independent security technologies, and how the Java APIs — JAX-WS and JAX-RS — deliver a set of powerful tools for developing a Service-Oriented Architecture (SOA).
About Web Services – SOAP, Rest, SOA
Prerequisites
You should be able to:
Create and run a complete stand-alone Java application
Use the standard flow control constructs (if/then/else/while/for)
Instantiate Java objects and call instance methods
Create classes that implement interfaces
Course Content
Web Services Overview
Interoperable applications with SOA
Designing an SOA integration architecture
Implementing SOAs with web services
Java standard APIs for web services
Building SOAP–based services with JAX–WS
Developing RESTful services with JAX–RS
Defining SOAP Messages with WSDL
XML essentials
XML namespaces
Describing XML with schema
Structure of SOAP messages
Role of SOAP in web services
Operations, messages and faults
Anatomy of a WSDL document
Defining the interfaces of a web service
Specifying implementation
Implementing Code–First Web Services
Exposing plain old Java objects (POJOs) as web services
Applying JAX–WS annotations to POJOs
Configuring and deploying a web service implementation
Implementing SOAP clients in Java
Generating client–side artifacts from WSDL
Modifying client code to permit message monitoring
Authenticating and authorizing clients
Augmenting SOAP–based services
Incorporating best practices for web services
Implementing policies for security, reliability and message optimization
Generating Contract–First Web Services
Contract–first service development
Comparing contract–first and code–first services
Creating portable Java artifacts
Importing a WSDL document
Building interoperable applications by conforming to Web Services Interoperability (WS–I) standards
Implementing a web service endpoint using JAX–WS
Building RESTful Web Services
Introduction to REST (Representational State Transfer)
Describing the REST architectural style
Comparing SOAP and RESTful web services
Developing RESTful web services using JAX–RS
Adding JAX–RS annotations to a POJO
Configuring result types using HTTP request headers
Deploying a JAX–WS service
Customizing a RESTful Service Implementation
Interacting with request URLs
Mapping URLs to Java classes and methods
Binding URL components to method arguments
Providing Server–Side Support for Ajax Clients
Handling JavaScript Object Notation (JSON)
Applying cases for JSON with RESTful services
Interpreting a message formatted as JSON
Mapping Java to JSON
Controlling JSON generation with JAXB annotations
Defining a JSON return type from a Java method
Developing RESTful Clients
Securing Web Services
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