About Java EE

An Introduction to Web Services

Java EE 6: Develop Web Services with JAX-WS & JAX-RS

• Explaining the need for web services
• Defining web services
• Explaining the characteristics of a web service
• Explaining the use of both XML and JSON in web services
• Identifying the two major approaches to developing web services
• Explaining the advantages of developing web services within a Java EE container

XML

• Describing the Benefits of XML
• Creating an XML Declaration
• Assembling the Components of an XML Document
• Declaring and Apply XML Namespaces
• Validating XML Documents using XML Schemas
• Creating XML Schemas

JAXB

• Listing the Different Java XML APIs
• Explaining the Benefits of JAXB
• Unmarshalling XML Data with JAXB
• Marshalling XML Data with JAXB
• Compiling XML Schema to Java
• Generating XML Schema from Java Classes
• Applying JAXB Binding Annotations
• Creating External Binding Configuration Files

SOAP Web Services

• SOAP message structure
• Using WSDL files to define web services
• WS-I Basic Profile and WS-Policy

Creating JAX-WS Clients

• Using tools to generate JAX-WS client artifacts
• Calling SOAP web services using JAX-WS in a Java SE environment
• Calling SOAP web services using JAX-WS in a Java EE environment
• Using JAXB Binding customization with a SOAP web service
• Creating a JAX-WS Dispatch client
• Creating a client that consumes a WS-Policy enhanced services (WS-MakeConnection)

RESTful Web Services

• Describing the RESTful architecture and how it can be applied to web services
• Designing a RESTful web service and identify resources
• Navigating a RESTful web service using hypermedia
• Selecting the correct HTTP method to use when duplicate requests must be avoided
• Identifying Web Service result status by HTTP response code
• Version RESTful web services

Creating RESTful Clients in Java

• Using Java SE APIs to make HTTP requests
• Using the Jersey Client APIs to make HTTP requests
• Processing XML and JSON in a RESTful web service client

Bottom-Up JAX-WS Web Services

• Describing the benefits of Code First Design
• Creating JAX-WS POJO Endpoints
• Creating JAX-WS EJB Endpoints

Top-Down JAX-WS Web Services

• Describing the benefits of WSDL First Design
• Generating Service Endpoint Interfaces (SEIs) from WSDLs
• Implementing Service Endpoint Interfaces
• Customizing SEI Generation

JAX-RS RESTful Web Services

• Download, Install, and Configure Jersey
• Creating Application Subclasses
• Creating Resource Classes
• Creating Resource Methods, Sub-Resource Methods, and Sub-Resource Locator Methods
• Producing and Consume XML and JSON content with JAX-RS

Web Service Error Handling

• Describing how SOAP web services convey errors
• Describing how REST web services convey errors
• Returning SOAP faults
• Returning HTTP error status codes
• Mapping thrown Exceptions to HTTP status codes
• Handling errors with SOAP clients
• Handling errors with Jersey clients

Security Concepts

• Explaining Authentication, Authorization, and Confidentiality
• Applying Basic Java EE Security by using deployment descriptors (web.xml)
• Creating users and groups and map them to application roles
• Detailing possible web service attack vectors

WS-Security

• Describing the purpose of WS-Policy, WS-SecurityPolicy, WS-Security
• Configuring WebLogic Server for WS-Security
• Applying WS-Policy to WebLogic JAX-WS Web Services
• Signing and Encrypt SOAP Messages using WS-Security

Web Service Security with Jersey

• Applying JSR-250 Security Annotations such as @RolesAllowed
• Enabling an assortment of filters including the RolesAllowedResourceFilterFactory
• Obtaining a SecurityContext and perform programmatic security
• Authenticating using the Jersey Client API

OAuth 1.1a with Jersey

• Describing the purpose of OAuth
• Describing the request lifecycle when using OAuth
• Creating OAuth enabled services using Jersey
• Creating OAuth enabled clients using Jersey