Document Information


Part I Introduction

1.  Overview

2.  Using the Tutorial Examples

Part II The Web Tier

3.  Getting Started with Web Applications

4.  JavaServer Faces Technology

5.  Introduction to Facelets

6.  Expression Language

7.  Using JavaServer Faces Technology in Web Pages

8.  Using Converters, Listeners, and Validators

9.  Developing with JavaServer Faces Technology

10.  JavaServer Faces Technology: Advanced Concepts

11.  Using Ajax with JavaServer Faces Technology

12.  Composite Components: Advanced Topics and Example

13.  Creating Custom UI Components and Other Custom Objects

14.  Configuring JavaServer Faces Applications

15.  Java Servlet Technology

16.  Uploading Files with Java Servlet Technology

17.  Internationalizing and Localizing Web Applications

Part III Web Services

18.  Introduction to Web Services

19.  Building Web Services with JAX-WS

20.  Building RESTful Web Services with JAX-RS

21.  JAX-RS: Advanced Topics and Example

Subresources and Runtime Resource Resolution

Subresource Methods

Subresource Locators

Integrating JAX-RS with EJB Technology and CDI

Conditional HTTP Requests

Runtime Content Negotiation

Using JAX-RS With JAXB

Using Java Objects to Model Your Data

Starting from an Existing XML Schema Definition

Using JSON with JAX-RS and JAXB

The customer Example Application

Overview of the customer Example Application

The Customer and Address Entity Classes

The CustomerService Class

The CustomerClientXML and CustomerClientJSON Classes

Modifying the Example to Generate Entity Classes from an Existing Schema

To Modify the customer Example to Generate Java Entity Classes from an Existing XML Schema Definition

Running the customer Example

To Build, Package, and Deploy the customer Example Using NetBeans IDE

To Build, Package, and Deploy the customer Example Using Ant

To Run the customer Example Using the Jersey Client

To Run the customer Example Using the Web Services Tester

Using Curl to Run the customer Example Application

Part IV Enterprise Beans

22.  Enterprise Beans

23.  Getting Started with Enterprise Beans

24.  Running the Enterprise Bean Examples

25.  A Message-Driven Bean Example

26.  Using the Embedded Enterprise Bean Container

27.  Using Asynchronous Method Invocation in Session Beans

Part V Contexts and Dependency Injection for the Java EE Platform

28.  Introduction to Contexts and Dependency Injection for the Java EE Platform

29.  Running the Basic Contexts and Dependency Injection Examples

30.  Contexts and Dependency Injection for the Java EE Platform: Advanced Topics

31.  Running the Advanced Contexts and Dependency Injection Examples

Part VI Persistence

32.  Introduction to the Java Persistence API

33.  Running the Persistence Examples

34.  The Java Persistence Query Language

35.  Using the Criteria API to Create Queries

36.  Creating and Using String-Based Criteria Queries

37.  Controlling Concurrent Access to Entity Data with Locking

38.  Using a Second-Level Cache with Java Persistence API Applications

Part VII Security

39.  Introduction to Security in the Java EE Platform

40.  Getting Started Securing Web Applications

41.  Getting Started Securing Enterprise Applications

42.  Java EE Security: Advanced Topics

Part VIII Java EE Supporting Technologies

43.  Introduction to Java EE Supporting Technologies

44.  Transactions

45.  Resources and Resource Adapters

46.  The Resource Adapter Example

47.  Java Message Service Concepts

48.  Java Message Service Examples

49.  Bean Validation: Advanced Topics

50.  Using Java EE Interceptors

Part IX Case Studies

51.  Duke's Bookstore Case Study Example

52.  Duke's Tutoring Case Study Example

53.  Duke's Forest Case Study Example



Annotations for Field and Bean Properties of Resource Classes

JAX-RS annotations for resource classes let you extract specific parts or values from a Uniform Resource Identifier (URI) or request header.

JAX-RS provides the annotations listed in Table 21-1.

Table 21-1 Advanced JAX-RS Annotations




Injects information into a class field, bean property, or method parameter


Extracts information from cookies declared in the cookie request header


Extracts information from a request representation whose content type is application/x-www-form-urlencoded


Extracts the value of a header


Extracts the value of a URI matrix parameter


Extracts the value of a URI template parameter


Extracts the value of a URI query parameter

Extracting Path Parameters

URI path templates are URIs with variables embedded within the URI syntax. The @PathParam annotation lets you use variable URI path fragments when you call a method.

The following code snippet shows how to extract the last name of an employee when the employee’s email address is provided:

public class EmpResource {

    public String getEmployeelastname(@PathParam("lastname") String lastName) {

In this example, the @Path annotation defines the URI variables (or path parameters) {firstname} , {lastname}, and {domain}. The @PathParam in the method parameter of the request method extracts the last name from the email address.

If your HTTP request is GET /employees/, the value “doe” is injected into {lastname}.

You can specify several path parameters in one URI.

You can declare a regular expression with a URI variable. For example, if it is required that the last name must consist only of lower and upper case characters, you can declare the following regular expression:


If the last name does not match the regular expression, a 404 response is returned.

Extracting Query Parameters

Use the @QueryParam annotation to extract query parameters from the query component of the request URI.

For instance, to query all employees who have joined within a specific range of years, use a method signature like the following:

public Response getEmployees(
        @DefaultValue("2002") @QueryParam("minyear") int minyear,
        @DefaultValue("2010") @QueryParam("maxyear") int maxyear)

This code snippet defines two query parameters, minyear and maxyear. The following HTTP request would query for all employees who have joined between 1999 and 2009:

GET /employees?maxyear=2009&minyear=1999

The @DefaultValue annotation defines a default value, which is to be used if no values are provided for the query parameters. By default, JAX-RS assigns a null value for Object values and zero for primitive data types. You can use the @DefaultValue annotation to eliminate null or zero values and define your own default values for a parameter.

Extracting Form Data

Use the @FormParam annotation to extract form parameters from HTML forms. For example, the following form accepts the name, address, and manager’s name of an employee:

<FORM action="" method="post">
Employee name: <INPUT type="text" name="empname" tabindex="1">  
Employee address: <INPUT type="text" name="empaddress" tabindex="2"> 
Manager name: <INPUT type="text" name="managername" tabindex="3"> 

Use the following code snippet to extract the manager name from this HTML form:

public void post(@FormParam("managername") String managername) {
    // Store the value

To obtain a map of form parameter names to values, use a code snippet like the following:

public void post(MultivaluedMap<String. String> formParams) {
    // Store the message

Extracting the Java Type of a Request or Response

The annotation retrieves the Java types related to a request or response.

The interface provides information about the components of a request URI. The following code snippet shows how to obtain a map of query and path parameter names to values:

public String getParams(@Context UriInfo ui) {
    MultivaluedMap<String, String> queryParams = ui.getQueryParameters();
    MultivaluedMap<String, String> pathParams = ui.getPathParameters();

The interface provides information about request headers and cookies. The following code snippet shows how to obtain a map of header and cookie parameter names to values:

public String getHeaders(@Context HttpHeaders hh) {
    MultivaluedMap<String, String> headerParams = hh.getRequestHeaders();
    MultivaluedMap<String, Cookie> pathParams = hh.getCookies();