Contents

Title and Copyright Information

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Preface

Audience

Documentation Accessibility

Organization

Related Documentation

Conventions

1 Servlet Overview

Introduction to Servlets

Review of Servlet Technology

Advantages of Servlets

The Servlet Interface and Request and Response Objects

Servlets and the Servlet Container

Introduction to Servlet Sessions

Introduction to Servlet Contexts

Introduction to Servlet Configuration Objects

Introduction to Servlet Filters

Introduction to Event Listeners

JSP Pages and Other J2EE Component Types

A First Servlet Example

Hello World Code

Compiling and Deploying the Servlet

Running the Servlet

2 Servlet Development

OC4J Standalone for Development

Overview: Using OC4J Standalone

Key OC4J Flags for Development

Removal of tools.jar from OC4J Standalone

Servlet Development Basics and Key Considerations

Sample Code Template

Servlet Lifecycle

Servlet Preloading

Servlet Classloading and Application Redeployment

Servlet Information Exchange

Servlet Includes and Forwards

Servlet Thread Models and Related Considerations

Servlet Performance and Monitoring

JDK 1.4 Considerations: Cannot Invoke Classes Not in Packages

Additional Oracle Features

OC4J Logging

Servlet Debugging

Oracle JDeveloper Support for Servlet Development

Introduction to OC4J Support for Open Source Frameworks

Servlet Invocation

Summary of URL Components

Servlet Invocation by Class Name During OC4J Development

Servlet Invocation in an Oracle Application Server Production Environment

Servlet Invocation in an OC4J Standalone Environment

Servlet Sessions

Session Tracking

Features of the HttpSession Interface

Session Cancellation

Session Replication in a Distributable Application

Session Servlet Example

Servlet Security

Use of Security Features

Configuration of Oracle HTTP Server and OC4J for SSL

SSL Common Problems and Solutions

Additional Security Considerations

3 Servlet Filters and Event Listeners

Servlet Filters

Overview of Servlet Filters

How the Servlet Container Invokes Filters

Filtering of Forward or Include Targets

Filter Examples

Event Listeners

Event Categories and Listener Interfaces

Typical Event Listener Scenario

Event Listener Declaration and Invocation

Event Listener Coding and Deployment Guidelines

Event Listener Methods and Related Classes

Event Listener Sample

4 JDBC and EJB Calls from Servlets

Use of JDBC in Servlets

Database Query Servlet

Deployment and Testing of the Database Query Servlet

EJB Calls from Servlets

Servlet-EJB Overview

EJB Local Lookup

EJB Remote Lookup within the Same Application

EJB Remote Lookup Outside the Application

5 Deployment and Configuration Overview

General Overview of OC4J Deployment and Configuration

Overview: OC4J Standalone Versus the Oracle Application Server Environment

Overview of OC4J Deployment Scenarios

Using Oracle Deployment Tools Versus Expert Modes

Overview of Configuration Files

Introduction to OC4J and J2EE Configuration Files

OC4J Top-Level Server Configuration File: server.xml

OC4J and J2EE Application Descriptors

OC4J and J2EE Web Descriptors

OC4J Web Site Descriptors

Example: Mappings to and from Web Site Descriptors

Application Packaging

J2EE Application Structure

EAR File and WAR File Structures

Deployment Scenarios to OC4J Standalone

Setting Up an Administrative User and Password

Starting and Stopping OC4J Standalone

OC4J Default Application and Default Web Application

Deploying an EAR File to OC4J Standalone

Deploying Files into a J2EE Application Structure on OC4J Standalone

Deploying an Independent WAR File to OC4J Standalone

Deploying Files into a Web Application Directory Structure on OC4J Standalone

Application Undeployment or Redeployment in OC4J Standalone

OC4J Deployment in Oracle Application Server

Overview of OC4J Deployment and Configuration in Oracle Application Server

OC4J Default Web Application in Oracle Application Server

Application Undeployment and Redeployment in Oracle Application Server

6 Configuration File Descriptions

Configuration for global-web-application.xml and orion-web.xml

Element Descriptions for global-web-application.xml and orion-web.xml

DTD for global-web-application.xml and orion-web.xml

Hierarchical Representation of global-web-application.xml and orion-web.xml

Sample global-web-application.xml Settings

Configuration for Web Site XML Files

Element Descriptions for Web Site XML Files

DTD for Web Site XML Files

Hierarchical Representation of Web Site XML Files

Sample default-web-site.xml File

7 Configuration with Enterprise Manager

Web Module Configuration in Oracle Enterprise Manager

Application Server Control Page Descriptions

Application Server Control OC4J Home Page

Application Server Control OC4J Applications Page

Application Server Control Deploy Application (EAR) Page

Application Server Control Deploy Web Application (WAR) Page

Application Server Control OC4J Administration Page

Application Server Control Website Properties Page

Application Server Control Web Module Page

Application Server Control Web Module Properties Page

Application Server Control Web Module Mappings Page

Application Server Control Web Module Filtering and Chaining Page

Application Server Control Web Module Environment Page

Application Server Control Web Module Advanced Properties Page

A Open Source Frameworks and Utilities

Configuration and Use of Jakarta Struts in OC4J

Overview of Jakarta Struts

Downloading the Struts Binary Distribution

Unpacking the Struts Binary Distribution

Installing and Accessing Struts Documentation

Installing the Struts Sample Web Application

Deploying Your Own Application with the Struts Framework

Configuration and Use of Jakarta log4j in OC4J

Overview of Jakarta log4j

Downloading the log4j Binary Distribution

Unpacking the log4j Binary Distribution

Installing the log4j Library

Using log4j Configuration Files

Enabling log4j Debug Mode

B Third Party Licenses

Apache HTTP Server

The Apache Software License

Apache JServ

Apache JServ Public License

Index