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

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

Overview of Interceptors

Interceptor Classes

Interceptor Lifecycle

Interceptors and CDI

Using Interceptors

Intercepting Method Invocations

Using Multiple Method Interceptors

Accessing Target Method Parameters From an Interceptor Class

Intercepting Lifecycle Callback Events

Using Multiple Lifecycle Callback Interceptors

Intercepting Timeout Events

Using Multiple Timeout 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



The interceptor Example Application

The interceptor example demonstrates how to use an interceptor class, containing an @AroundInvoke interceptor method, with a stateless session bean.

The HelloBean stateless session bean is a simple enterprise bean with two business methods, getName and setName, to retrieve and modify a string. The setName business method has an @Interceptors annotation that specifies an interceptor class, HelloInterceptor, for that method.

public void setName(String name) { = name;

The HelloInterceptor class defines an @AroundInvoke interceptor method, modifyGreeting, that converts the string passed to HelloBean.setName to lowercase.

public Object modifyGreeting(InvocationContext ctx) throws Exception {
    Object[] parameters = ctx.getParameters();
    String param = (String) parameters[0];
    param = param.toLowerCase();
    parameters[0] = param;
    try {
        return ctx.proceed();
    } catch (Exception e) {
        logger.warning("Error calling ctx.proceed in modifyGreeting()");
        return null;

The parameters to HelloBean.setName are retrieved and stored in an Object array by calling the InvocationContext.getParameters method. Because setName has only one parameter, it is the first and only element in the array. The string is set to lowercase and stored in the parameters array, then passed to InvocationContext.setParameters. To return control to the session bean, InvocationContext.proceed is called.

The user interface of interceptor is a JavaServer Faces web application that consists of two Facelets views: index.xhtml, which contains a form for entering the name, and response.xhtml, which displays the final name.

Running the interceptor Example

You can use either NetBeans IDE or Ant to build, package, deploy, and run the interceptor example.

To Run the interceptor Example Using NetBeans IDE

  1. From the File menu, choose Open Project.
  2. In the Open Project dialog, navigate to tut-install/examples/ejb/.
  3. Select the interceptor folder and click Open Project.
  4. In the Projects tab, right-click the interceptor project and select Run.

    This will compile, deploy, and run the interceptor example, opening a web browser page to http://localhost:8080/interceptor/.

  5. Type a name into the form and select Submit.

    The name will be converted to lowercase by the method interceptor defined in the HelloInterceptor class.

To Run the interceptor Example Using Ant

  1. Go to the following directory:
  2. To compile the source files and package the application, use the following command:

    This command calls the default target, which builds and packages the application into a WAR file, interceptor.war, located in the dist directory.

  3. To deploy and run the application using Ant, use the following command:
    ant run

    This command deploys and runs the interceptor example, opening a web browser page to http://localhost:8080/interceptor/.

  4. Type a name into the form and select Submit.

    The name will be converted to lowercase by the method interceptor defined in the HelloInterceptor class.