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

What Is a Servlet?

Servlet Lifecycle

Handling Servlet Lifecycle Events

Defining the Listener Class

Handling Servlet Errors

Sharing Information

Using Scope Objects

Controlling Concurrent Access to Shared Resources

Creating and Initializing a Servlet

Writing Service Methods

Getting Information from Requests

Constructing Responses

Filtering Requests and Responses

Programming Filters

Programming Customized Requests and Responses

Specifying Filter Mappings

To Specify Filter Mappings Using NetBeans IDE

Invoking Other Web Resources

Including Other Resources in the Response

Transferring Control to Another Web Component

Accessing the Web Context

Maintaining Client State

Accessing a Session

Associating Objects with a Session

Session Management

To Set the Timeout Period Using NetBeans IDE

Session Tracking

Finalizing a Servlet

Tracking Service Requests

Notifying Methods to Shut Down

Creating Polite Long-Running Methods

Further Information about 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

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 mood Example Application

The mood example application, located in the tut-install/examples/web/mood/ directory, is a simple example that displays Duke’s moods at different times during the day. The example shows how to develop a simple application by using the @WebServlet, @WebFilter, and @WebListener annotations to create a servlet, a listener, and a filter.

Components of the mood Example Application

The mood example application is comprised of three components: mood.web.MoodServlet, mood.web.TimeOfDayFilter, and mood.web.SimpleServletListener.

MoodServlet, the presentation layer of the application, displays Duke’s mood in a graphic, based on the time of day. The @WebServlet annotation specifies the URL pattern:

public class MoodServlet extends HttpServlet {

TimeOfDayFilter sets an initialization parameter indicating that Duke is awake:

@WebFilter(filterName = "TimeOfDayFilter",
urlPatterns = {"/*"},
initParams = {
    @WebInitParam(name = "mood", value = "awake")})
public class TimeOfDayFilter implements Filter {

The filter calls the doFilter method, which contains a switch statement that sets Duke’s mood based on the current time.

SimpleServletListener logs changes in the servlet’s lifecycle. The log entries appear in the server log.

Running the mood Example

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

To Run the mood Example Using NetBeans IDE

  1. From the File menu, choose Open Project.
  2. In the Open Project dialog, navigate to:
  3. Select the mood folder.
  4. Select the Open as Main Project check box.
  5. Click Open Project.
  6. In the Projects tab, right-click the mood project and select Build.
  7. Right-click the project and select Deploy.
  8. In a web browser, open the URL http://localhost:8080/mood/report.

    The URL specifies the context root, followed by the URL pattern specified for the servlet.

    A web page appears with the title “Servlet MoodServlet at /mood” a text string describing Duke’s mood, and an illustrative graphic.

To Run the mood Example Using Ant

  1. In a terminal window, go to:
  2. Type the following command:

    This target builds the WAR file and copies it to the tut-install/examples/web/mood/dist/ directory.

  3. Type ant deploy.

    Ignore the URL shown in the deploy target output.

  4. In a web browser, open the URL http://localhost:8080/mood/report.

    The URL specifies the context root, followed by the URL pattern.

    A web page appears with the title “Servlet MoodServlet at /mood” a text string describing Duke’s mood, and an illustrative graphic.