精通Dependency Injection:Spring与Guice实战

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"Dependency Injection" 是一本由 Dhanji R. Prasanna 撰写的书籍,详细介绍了依赖注入(Dependency Injection,简称DI)这一关键的设计模式,它在Spring和Google Guice等流行框架中起着核心作用。本书旨在帮助开发者理解和有效地利用DI技术,如Spring、Google Guice、PicoContainer等,通过大量实践示例,探讨了DI的优势、限制、陷阱、边缘情况和最佳实践。书中的例子从小规模的核心概念开始,逐步展开一个全面的例子,以便读者能够理解整体的架构。 作者Dhanji R. Prasanna是一位企业级Java顾问,对EJB3、JBI、JSF、Guice、Spring、HiveMind、PicoContainer等技术有深入研究,并参与编写了Bean Validation(JSR-303)、JAX-RS(JSR-311)、Servlet 3.0(JSR-315)和JavaServer Faces 2.0(JSR-314)等多个Java规范。他还共同撰写了Java EE 6.0(JSR-316)平台规范,这是J2EE的下一个版本。 本书以Java为中心,适合具备面向对象编程基础(如Java、Ruby或C#)的开发者和架构师阅读。内容包括: 1. **依赖注入原理**:解释了DI如何反转控制权,使得对象之间的依赖关系不再硬编码,而是通过外部容器来管理,提高了代码的可测试性和可维护性。 2. **Spring框架**:详细介绍了Spring框架中的依赖注入实现,包括如何配置Bean、如何使用@Autowired注解以及如何处理不同类型的依赖。 3. **Google Guice**:讨论了Guice的轻量级特性,如使用@Inject注解进行依赖注入,模块化配置,以及如何创建自定义绑定。 4. **其他DI框架**:简要介绍了PicoContainer和其他框架的用法,帮助读者理解不同DI解决方案的差异和适用场景。 5. **最佳实践与陷阱**:探讨了在实际应用中可能会遇到的问题,提供了避免常见错误和提升设计质量的建议。 6. **集成与扩展**:讨论了如何将DI框架与JPA(Java Persistence API)、Web API等企业级标准集成,如Dhanji开发的Warp Persist和Warp Servlets,它们是Guice的重要扩展。 7. **案例分析**:通过一系列逐步扩展的示例,展示了如何在大型项目中运用DI,以提高软件设计的灵活性和可扩展性。 通过这本书,读者不仅可以深入了解依赖注入的概念,还能掌握在实际开发中如何有效地运用这些工具和技术,从而提高软件的可维护性和可靠性。
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Summary Dependency Injection Principles, Practices, and Patterns teaches you to use DI to reduce hard-coded dependencies between application components. You'll start by learning what DI is and what types of applications will benefit from it. Then, you'll work through concrete scenarios using C# and the .NET framework to implement DI in your own projects. As you dive into the thoroughly-explained examples, you'll develop a foundation you can apply to any of the many DI libraries for .NET and .NET Core. Purchase of the print book includes a free eBook in PDF, Kindle, and ePub formats from Manning Publications. About the Technology Dependency Injection (DI) is a great way to reduce tight coupling between software components. Instead of hard-coding dependencies, such as specifying a database driver, you make those connections through a third party. Central to application frameworks like ASP.NET Core, DI enables you to better manage changes and other complexity in your software. About the Book Dependency Injection Principles, Practices, and Patterns is a revised and expanded edition of the bestselling classic Dependency Injection in .NET. It teaches you DI from the ground up, featuring relevant examples, patterns, and anti-patterns for creating loosely coupled, well-structured applications. The well-annotated code and diagrams use C# examples to illustrate principles that work flawlessly with modern object-oriented languages and DI libraries. What's Inside Refactoring existing code into loosely coupled code DI techniques that work with statically typed OO languages Integration with common .NET frameworks Updated examples illustrating DI in .NET Core About the Reader For intermediate OO developers. About the Authors Mark Seemann is a programmer, software architect, and speaker who has been working with software since 1995, including six years with Microsoft. Steven van Deursen is a seasoned .NET developer and architect, and the author and maintainer of the Simple Injector DI library. Table of Contents PART 1 Putting Dependency Injection on the map Chapter 1. The Basics Of Dependency Injection: What, Why, And How Chapter 2. Writing Tightly Coupled Code Chapter 3. Writing Loosely Coupled Code PART 2 Catalog Chapter 1. Di Patterns Chapter 2. Di Anti-Patterns Chapter 3. Code Smells PART 3 Pure DI Chapter 1. Application Composition Chapter 2. Object Lifetime Chapter 3. Interception Chapter 4. Aspect-Oriented Programming By Design Chapter 5. Tool-Based Aspect-Oriented Programming PART 4 DI Containers Chapter 1. Di Container Introduction Chapter 2. The Autofac Di Container Chapter 3. The Simple Injector Di Container Chapter 4. The Microsoft.Extensions.Dependencyinjection Di Container