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EMPOWERING PRODUCTIVITY FOR THE JAVA DEVELOPER

Beginning Spring 2: From Novice to ProfessionalDear Reader,

Over the last few years, the Java application development space has been flooded with tools and frameworks. The Spring framework is an agile, open source toolkit for knitting together disparate libraries and tools into powerful enterprise Java applications. Spring has a distinct, consistent design philoso-phy that has been applied carefully to all of its various libraries and wrappers. Once you understand the Spring approach, you will be able to get up to speed very quickly with unfamiliar components.

Im an enthusiastic full-time developer of Spring-based Java applications. In this book, I show you how to use Spring, but I also show you how it makes your code easier to write, simpler to test, and as a result more reliable and support-able. I explain how to use the core features of Spring to build complex appli-cations, and how the Spring philosophy applies to the vast array of external software that it supports. By providing a simple but complete sample applica-tion, the book places the various features in context and provides you with a solid basis for further exploration.

The examples I use include everything that you will need in the course of creating a typical web application, so you will see how to apply the latest Spring features to produce web output with Spring MVC and Spring Web Flow, how to send e-mail by using Springs wrappers for the JavaMail APIs, and how to secure your application with the Acegi libraries. I have also devoted a chapter to the creation of unit tests for applications written using Spring.

I hope you enjoy reading this book as much as I enjoyed writing it.

Dave Minter

Author of

Beginning Hibernate

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Beginning Spring 2

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Beginning

Spring 2From Novice to Professional

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ISBN-13: 978-1-59059-685-2ISBN-10: 1-59059-685-4

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Learn to build powerful enterprise Java applications using the Spring Framework

Beginning Spring 2From Novice to Professional

Dave Minter

Minter_685-4FRONT.fm Page i Wednesday, November 14, 2007 6:22 AM

Beginning Spring 2: From Novice to Professional

Copyright 2008 by Dave Minter

All rights reserved. No part of this work may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopying, recording, or by any information storage or retrieval system, without the prior written permission of the copyright owner and the publisher.

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To my parents

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v

Contents at a Glance

About the Author . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xiiiAbout the Technical Reviewer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xvAcknowledgments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xviiIntroduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xix

CHAPTER 1 An Introduction to Spring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

CHAPTER 2 Presenting the Sample Application . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

CHAPTER 3 The Heart of Spring: Inversion of Control . . . . . . . . . . . . . . . . . . . . . . 29

CHAPTER 4 Data Access . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55

CHAPTER 5 The Service Layer, Transaction Management, and AOP . . . . . . . . 75

CHAPTER 6 Web Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 107

CHAPTER 7 Security . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 137

CHAPTER 8 Sending E-mail . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 157

CHAPTER 9 Remoting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 171

CHAPTER 10 Testing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 193

APPENDIX The Spring IDE Plug-in for Eclipse . . . . . . . . . . . . . . . . . . . . . . . . . . . 229

INDEX . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 245

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vii

Contents

About the Author . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xiiiAbout the Technical Reviewer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xvAcknowledgments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xviiIntroduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xix

CHAPTER 1 An Introduction to Spring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

Frameworks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1Inversion of Control (IOC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Dependency Lookup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2The Problem with Dependency Lookup . . . . . . . . . . . . . . . . . . . . . . . . 3Dependency Injection as a Solution . . . . . . . . . . . . . . . . . . . . . . . . . . . 4Dependency Injection as an Aid to Testing . . . . . . . . . . . . . . . . . . . . . 5

An Agile Framework . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5Aspect-Oriented Programming (AOP) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6Libraries . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .