Spring in Action

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Video description In Video Editions the narrator reads the book while the content, figures, code listings, diagrams, and text appear on the screen. Like an audiobook that you can also watch as a video. Spring in Action is an excellent travel companion for the huge landscape that is the Spring Framework." Chapter 1 introduces Spring and Spring Boot and how to initialize a Spring project. In this chapter, you’ll take the first steps toward building a Spring application that you’ll expand upon throughout the course of the book.

You’re freed from the burden of worry about library versions. You can trust that for a given version of Spring Boot, the versions of the libraries brought in transitively will be compatible. You only need to worry about which version of Spring Boot you’re using. In addition to the new reactive programming features of Spring 5, Spring Boot 2 now provides even more autoconfiguration support than ever before as well as a completely reimagined Actuator for peeking into and manipulating a running application. TacoCloudApplicationTests.java—This is a simple test class that ensures that the Spring application context loads successfully. You’ll add more tests to the mix as you develop the application. As the Taco Cloud application grows, you’ll fill in this barebones project structure with Java code, images, stylesheets, tests, and other collateral that will make your project more complete. But in the meantime, let’s dig a little deeper into a few of the items that Spring Initializr provided. The act of wiring beans together is based on a pattern known as dependency injection (DI). Rather than have components create and maintain the lifecycle of other beans that they depend on, a dependency-injected application relies on a separate entity (the container) to create and maintain all components and inject those into the beans that need them. This is done typically through constructor arguments or property accessor methods.

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Craig Walls is an engineer at VMware, a member of the Spring engineering team, a popular author, and a frequent conference speaker. The best resource for modern Spring development.

Craig Walls is a software developer at Pivotal. He's a popular author and a frequent speaker at user groups and conferences. Craig lives in Cross Roads, Texas. The figure on the cover of Spring in Action, 5th edition, is Le Caraco, or an inhabitant of the province of Karak in southwest Jordan. Its capital is the city of Al-Karak, which boasts an ancient hilltop castle with magnificent views of the Dead Sea and surrounding plains. The illustration is taken from a French travel book, Encyclopédie des Voyages by J. G. St. Sauveur, published in 1796. Travel for pleasure was a relatively new phenomenon at the time and travel guides such as this one were popular, introducing both the tourist as well as the armchair traveler to the inhabitants of other regions of France and abroad. Figure 1.1. Application components are managed and injected into each other by the Spring application context. This book contains many examples of source code both in numbered listings and inline with normal text. In both cases, source code is formatted in a fixed-width font like this to separate it from ordinary text. Sometimes code is also in bold to highlight code that has changed from previous steps in the chapter, such as when a new feature adds to an existing line of code.

Spring is the required knowledge for Java developers! Why? This powerful framework eliminates a lot of the tedious configuration and repetitive coding tasks, making it easy to build enterprise-ready, production-quality software. The latest updates bring huge productivity boosts to microservices, reactive development, and other modern application designs. It’s no wonder over half of all Java developers use Spring. Finally, the build specification ends with the Spring Boot plugin. This plugin performs a few important functions: Chapter 12 takes a look at writing reactive data persistence with Spring Data to read and write data to Cassandra and Mongo databases.

Spring in Action, 5th Edition is the fully updated revision of Manning's bestselling Spring in Action. This new edition includes all Spring 5.0 updates, along with new examples on reactive programming, Spring WebFlux, and microservices. You'll also find the latest Spring best practices, including Spring Boot for application setup and configuration. Part 4 breaks down the monolithic application model, introducing you to Spring Cloud and microservice development: But enough of this chitchat, yakety-yak, and flimflam. This book’s title includes the phrase in action, so let’s get moving, and you can start writing your first application with Spring. 1.2. Initializing a Spring application Spring is required knowledge for Java developers! Why? This powerful framework eliminates a lot of the tedious configuration and repetitive coding tasks, making it easy to build enterprise-ready, production-quality software. The latest updates bring huge productivity boosts to microservices, reactive development, and other modern application designs. It’s no wonder over half of all Java developers use Spring. about the book It provides a Maven goal that enables you to run the application using Maven. You’ll try out this goal in section 1.3.4.I’m happy to say that this fifth edition of Spring in Action covers all of this and more! If you’re a seasoned veteran with Spring, Spring in Action, Fifth Edition will be your guide to everything new that Spring has to offer. On the other hand, if you’re new to Spring, then there’s no better time than now to get in on the action and the first few chapters will get you up and running in no time! Spring in Action, 5th edition is for Java developers who want to get started with Spring Boot and the Spring Framework as well as for seasoned Spring developers who want to go beyond the basics and learn the newest features of Spring. How this book is organized: a roadmap Chapter 5 reveals how to configure a Spring application using Spring Boot configuration properties. You’ll also learn how to selectively apply configuration using profiles.

As for the dependencies themselves, you can either expand the various sections and seek out the desired dependencies manually, or search for them in the search box at the top of the Available list. For the Taco Cloud application, you’ll start with the dependencies shown in figure 1.4. At Manning, there were several people working their magic to make sure that this book is the best it can possibly be. Many thanks in particular to Jenny Stout, my development editor, and to the production team, including project manager Janet Vail, copyeditors Andy Carroll and Frances Buran, and proofreaders Katie Tennant and Melody Dolab. Thanks, too, to technical proofer Joshua White who was thorough and helpful. When you filled out the Initializr form, you specified that your project should be built with Maven. Therefore, the Spring Initializr gave you a pom.xml file already populated with the choices you made. The following listing shows the entire pom.xml file provided by the Initializr. More recently, with the introduction of Spring Boot, automatic configuration has gone well beyond component scanning and autowiring. Spring Boot is an extension of the Spring Framework that offers several productivity enhancements. The most well-known of these enhancements is autoconfiguration, where Spring Boot can make reasonable guesses of what components need to be configured and wired together, based on entries in the classpath, environment variables, and other factors. Automatic configuration has its roots in the Spring techniques known as autowiring and component scanning. With component scanning, Spring can automatically discover components from an application’s classpath and create them as beans in the Spring application context. With autowiring, Spring automatically injects the components with the other beans that they depend on.The book has 5 parts spanning 19 chapters. Part 1 covers the foundational topics of building Spring applications: After ten years, this is still the clearest and most comprehensive introduction to the core concepts of the Spring platform. Designed in 2003 as a lighter approach to J2EE development, Spring Framework has since become a standard choice for building enterprise applications and required knowledge for Java developers. Spring 4 provides full Java 8 integration along with key upgrades like new annotations for the IoC container, improvements to Spring Expression Language, and much-needed support for REST. Whether you're just discovering Spring or you want to absorb the new features, there's no better way to master Spring than with this book.