Craig Walls - Spring in Action, Sixth Edition

SIXTH EDITION Craig Walls M A N N I N G From the fifth edition of Spring in Action by Craig Walls A great tool for understanding such a complex framework. Arnaldo Gabriel Ayala Meyer, Consultores Informticos S.R.L. Excellent coverage of the latest Spring release with complete practical examples. Bill Fly, Brookhaven College The go-to book for learning the Spring Framework and an excellent reference guide. Colin Joyce, Cisco This has always been my go-to book for Spring. The new edition is a comprehensive update that strikesthe balance between practical instruction and comprehensive theory. It helps you to get started quicklyand follows up with in-depth explanations. Daniel Vaughan, European Bioinfomatics Institute The definitive guide to building cloud native applications using Spring. David Witherspoon, Parsons Corporation The source of truth for the Spring ecosystem. Edd Melndez Gonzales, Scotiabank I would highly recommend this book, either for newcomers to the Spring Framework or a seasoned Springdeveloper who wishes to deep-dive into the latest features available in the Spring 5 ecosystem. Iain Campbell, Tango Telecom Even as a Spring veteran I got lots of practical tips from this book. Jettro Coenradie, Luminis Spring in Action, Sixth EditionSpring in Action,Sixth Edition CRAIG WALLS M A N N I N G SHELTER ISLAND For online information and ordering of this and other Manning books, please visit www.manning.com. The publisher offers discounts on this book when ordered in quantity. 20 Baldwin Road PO Box 761 Shelter Island, NY 11964 Email: orders@manning.com 2022 by Manning Publications Co. 20 Baldwin Road PO Box 761 Shelter Island, NY 11964 Email: orders@manning.com 2022 by Manning Publications Co.

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The author and publisher have made every effort to ensure that the information in this book was correct at press time. The author and publisher do not assume and hereby disclaim any liability to any party for any loss, damage, or disruption caused by errors or omissions, whether such errors or omissions result from negligence, accident, or any other cause, or from any usage of the information herein. Manning Publications Co. Development editor: Jennifer Stout 20 Baldwin Road Technical development editor: Joshua White PO Box 761 Review editor: Mihaela Batinichelter Island, NY 11964 Production editor: Deirdre S. Hiam Copy editor: Pamela Hunt Proofreader: Katie Tennant Technical proofreaders: Doug Warren and German Gonzalez-Morris Typesetter: Dennis Dalinnik Cover designer: Marija Tudor ISBN: 9781617297571 Printed in the United States of America brief contents123456789101112viiviii BRIEF CONTENTS 131415161718contentsixx CONTENTS CONTENTS xixii CONTENTS CONTENTS xiii 14.3 xiv CONTENTS 18.2 CONTENTS xvpreface Spring entered the development world more than 18 years ago with the fundamental mission of making Java application development easier. Originally, that meant offering a lightweight alternative to EJB 2.x.

But Spring was just getting started. Over the years, Spring expanded its mission of simplicity to address common development challenges, including persistence, security, integration, cloud computing, and others. Although Spring is closing in on two decades of enabling and simplifying enterprise Java development, it shows no signs of slowing down. Spring continues to address Java development challenges, whether it be creating an application deployed to a conventional application server or a containerized application deployed to a Kubernetes cluster in the cloud. And with Spring Boot providing autoconfiguration, build dependency help, and runtime monitoring, there has never been a better time to be a Spring developer! This edition of Spring in Action is your guide to Spring and Spring Boot and has been updated to reflect the best of what both have to offer. Even if youre new to Spring, youll have your first Spring application up and running before the end of the first chapter.

As the book progresses, youll learn how to create web applications, work with data, secure your application, and manage application configuration. Next, youll explore options for integrating your Spring applications with other applications and how to benefit from reactive programming in your Spring applications, including the new RSocket communication protocol. As the book draws to a close, youll see how to prepare your application for production and learn options for deploying. xviixviii PREFACE Whether youre new to Spring or have many years of Spring development to your credit, this is your next step in your journey. Im excited for you and happy to bring this guide to you. I look forward to seeing what you create with Spring! acknowledgments One of the most amazing things that Spring and Spring Boot do is automatically provide all of the foundational plumbing for an application, leaving you as a developer to focus primarily on the logic thats unique to your application.

Unfortunately, no such magic exists for writing a book. Or does it? At Manning, several people worked their magic to make sure that this book is the best it can possibly be. Many thanks in particular to my development editor, Jenny Stout, and to production editor, Deirdre Hiam, copy editor, Pamela Hunt, graphics editor, Jennifer Houle, and the entire production team for their wonderful work in making this book a reality. As the book was forming, we had several peer reviewers take an early look, give us feedback, and help make sure that the book stayed on target and covered the right stuff. For this, my thanks go to Al Pezewski, Alessandro Campeis, Becky Huett, Chris-tian Kreutzer-Beck, Conor Redmond, David Paccoud, David Torrubia Iigo, David Witherspoon German Gonzalez-Morris, Iain Campbell, Jon Guenther, Kevin Liao, Mark Dechamps, Michael Bright, Philippe Vialatte, Pierre-Michel Ansel, Tony Sweets, William Fly, and Zorodzayi Mukuya. I absolutely must give a shout out to everyone on the Spring engineering team.

You consistently produce some of the most incredible stuff Ive ever worked with, and I am proud to consider you my colleagues. Many thanks go to my fellow speakers on the No Fluff/Just Stuff tour. I continue to learn so much from every one of you. And many thanks to those of you who have xixxx ACKNOWLEDGMENTS attended one of my sessions on the NFJS tour; although Im the one at the front of the room, I often learn a lot from you, too. As I did in the previous edition, Id like to thank the Phoenicians. You know what you did.