Spring Boot in Practice

Spring Boot in Practice
brief contents
contents
foreword
	We might be on to something
preface
acknowledgments
about this book
	Who should read this book?
	How this book is organized: A roadmap
	About the code
	liveBook discussion forum
about the author
about the cover illustration
Part 1
	1 Booting Spring Boot
		1.1 Introducing Spring Boot
			1.1.1 Why Spring Boot?
			1.1.2 What is Spring Boot?
			1.1.3 Spring Boot core features
			1.1.4 Spring Boot components
		1.2 Code examples
			1.2.1 Maven vs. Gradle
			1.2.2 Java vs. Kotlin
			1.2.3 Database support
			1.2.4 Lombok
		1.3 Getting started with Spring Boot
			1.3.1 Your first Spring Boot project
			1.3.2 Spring Boot project structure
			1.3.3 Creating an executable JAR file
			1.3.4 Exploring the JAR file
			1.3.5 Shutting down a Spring Boot application
		1.4 Spring Boot additional concepts
			1.4.1 Spring Boot startup events
			1.4.2 Listening events in a Spring Boot application
			1.4.3 Custom Spring Boot starters
			1.4.4 Custom autoconfiguration
			1.4.5 Failure analyzers
			1.4.6 Spring Boot actuator
			1.4.7 Spring Boot developer tool
		Summary
Part 2
	2 Common Spring Boot tasks
		2.1 Managing configurations
			2.1.1 Using the SpringApplication class
			2.1.2 Using @PropertySource
			2.1.3 Config data file
			2.1.4 OS environment variable
		2.2 Creating custom properties with @ConfigurationProperties
			2.2.1 Technique: Defining custom properties with @ConfigurationProperties in a Spring Boot application
		2.3 Executing code on Spring Boot application startup
			2.3.1 Technique: Using CommandLineRunner to execute code at Spring Boot application startup
		2.4 Customizing logging in a Spring Boot application
			2.4.1 Technique: Understanding and customizing default Spring Boot logging in a Spring Boot application
			2.4.2 Technique: Using Log4j2 to configure logging in a Spring Boot application
		2.5 Validate user data using Bean Validation
			2.5.1 Technique: Using built-in Bean Validation annotations to validate business entity in a Spring Boot application
			2.5.2 Technique: Defining and using custom Bean Validation annotation to validate a POJO in a Spring Boot application
		Summary
	3 Database access with Spring Data
		3.1 Introducing Spring Data
			3.1.1 Why Spring Data?
			3.1.2 Spring Data modules
		3.2 Configuring a database in a Spring Boot application
			3.2.1 Technique: Configuring a relational database in a Spring Boot application
			3.2.2 Technique: Configuring MongoDB database in a Spring Boot application
			3.2.3 Technique: Initializing a relational database schema with a Spring Boot application
		3.3 Understanding the CrudRepository interface
			3.3.1 Technique: Managing domain objects in a relational database with Spring Data JPA
			3.3.2 Technique: Creating a custom Spring Data repository with Spring Data JPA to manage domain objects in a relational database
		3.4 Retrieve data from a database using Spring Data
			3.4.1 Defining query methods
			3.4.2 Technique: Defining custom query methods to retrieve domain objects from a relational database with Spring Data JPA
			3.4.3 Implementing pagination with PagingAndSortingRepository
			3.4.4 Technique: Using PagingAndSortingRepository interface to paginate and sort the data
			3.4.5 Specifying query using @NamedQuery
			3.4.6 Technique: Using a named query to manage domain objects in a relational database with Spring Data JPA
		3.5 Specifying query using @Query
			3.5.1 Technique: Using @Query annotation to define queries and retrieve domain objects in a relational database with Spring Data JPA
		3.6 Using Criteria API with Spring Data JPA
			3.6.1 Technique: Using Criteria API to manage domain objects in a relational database with Spring Data JPA
		3.7 Using QueryDSL with Spring Data JPA
			3.7.1 Technique: Using QueryDSL to manage domain objects in a relational database with Spring Data JPA
		3.8 Managing domain object relationships
			3.8.1 Technique: Managing domain objects with many-to-many relationships in a relational database with Spring Data JPA
		Summary
	4 Spring Boot: Autoconfiguration and Actuator
		4.1 Understanding Spring Boot autoconfiguration
			4.1.1 Understanding @Conditional annotation
			4.1.2 Deep dive into autoconfiguration
		4.2 Using Spring Boot DevTools
			4.2.1 Property defaults
			4.2.2 Automatic restart
			4.2.3 Live reload
		4.3 Creating a custom failure analyzer
			4.3.1 Technique: Creating a custom Spring Boot FailureAnalyzer
		4.4 Spring Boot Actuator
			4.4.1 Technique: Configuring Spring Boot Actuator in a Spring Boot application
			4.4.2 Understanding Spring Boot Actuator endpoints
			4.4.3 Managing Spring Boot Actuator endpoints
			4.4.4 Health endpoint deep dive
			4.4.5 Creating a custom Spring Boot HealthIndicator
			4.4.6 Technique: Defining a custom Spring Boot actuator HealthIndicator
		4.5 Info endpoint deep dive
			4.5.1 Technique: Configuring info Spring Boot Actuator endpoint
			4.5.2 Technique: Configuring a custom info contributor to provide custom application info in the Spring Boot Actuator endpoint
		4.6 Creating a custom Spring Boot Actuator endpoint
			4.6.1 Technique: Creating a custom Spring Boot actuator endpoint
			4.6.2 Spring Boot actuator metrics
			4.6.3 Creating custom metrics
			4.6.4 Gauge
			4.6.5 Metrics dashboard with Prometheus and Grafana
		Summary
	5 Securing Spring Boot applications
		5.1 Introducing Spring Security
		5.2 Hello Spring Security with Spring Boot
			5.2.1 Technique: Enabling application security with Spring Security in a Spring Boot application
			5.2.2 Filter, FilterChain, and Spring Security
			5.2.3 Spring Security architecture
			5.2.4 Authenticating a user
			5.2.5 Spring Security autoconfiguration
		5.3 Using Spring Security
			5.3.1 Technique: Customizing the default Spring Security login page of a Spring Boot application
			5.3.2 Technique: Configuring in-memory authentication with custom users in Spring Security in a Spring Boot application
			5.3.3 Technique: Configuring JDBC authentication with Spring Security in a Spring Boot application
			5.3.4 Technique: Implementing JDBC authentication with custom UserDetailsService in a Spring Boot application
			5.3.5 Technique: Implementing LDAP authentication in a Spring Boot application
			5.3.6 Technique: Implementing HTTP basic authentication in a Spring Boot application
		Summary
	6 Implementing additional security with Spring Security
		6.1 Enabling HTTPS in a Spring Boot application
			6.1.1 Technique: Enabling HTTPS in a Spring Boot application
		6.2 Securing secrets in Spring Cloud Vault
			6.2.1 Technique: Managing application secrets with HashiCorp Vault in a Spring Boot application
		6.3 Implementing user registration
			6.3.1 Technique: Implementing user registration with Spring Security in a Spring Boot application
		6.4 Implementing email verification at user registration
			6.4.1 Technique: Validating user email addresses in a Spring Boot application
		6.5 Controlling multiple incorrect login attempts
			6.5.1 Technique: Controlling multiple incorrect login attempts in a Spring Boot application
		6.6 Implementing a Remember Me feature
			6.6.1 Technique: Enabling a Remember Me feature in a Spring Boot application with Spring Security
		6.7 Implementing reCAPTCHA
			6.7.1 Technique: Enabling Google reCAPTCHA in a Spring Boot application with Spring Security
		6.8 Enabling two-factor authentication with Google Authenticator
			6.8.1 Technique: Enabling two-factor authentication in a Spring Boot application
		6.9 Authentication with OAuth2
			6.9.1 Technique: Enabling sign in with Google in a Spring Boot application
		6.10 Securing Actuator endpoints
			6.10.1 Technique: Securing Spring Boot Actuator endpoints
		Summary
	7 Developing RESTful Web services with Spring Boot
		7.1 Developing a RESTful API with Spring Boot
			7.1.1 Technique: Developing a RESTful API using Spring Boot
		7.2 Managing exceptions in a Spring Boot RESTful API
			7.2.1 Technique: Handling exceptions in a RESTful API
		7.3 Testing a RESTful API
			7.3.1 Technique: Testing a RESTful API in a Spring Boot application
		7.4 Documenting a RESTful API
			7.4.1 Technique: Documenting a RESTful API with OpenAPI
		7.5 Implementing RESTful API versioning
			7.5.1 Technique: Implementing versioning in a RESTful API
		7.6 Securing a RESTful API
			7.6.1 Technique: Using JWT to authorize RESTful API requests
		Summary
Part 3
	8 Reactive Spring Boot application development
		8.1 Introduction to reactive programming
			8.1.1 Backpressure
			8.1.2 Benefits of reactive programming
		8.2 Understanding Project Reactor
		8.3 Introducing Spring WebFlux
			8.3.1 Technique: Developing a reactive RESTful API with annotated controllers
			8.3.2 Technique: Developing a reactive RESTful API with functional endpoints
		8.4 Testing reactive applications
			8.4.1 Technique: Using WebClient to build an API client
		8.5 Introduction to RSocket
			8.5.1 Technique: Developing applications using RSocket and Spring Boot
		8.6 Introduction to WebSocket
			8.6.1 Technique: Developing an application using WebSocket and Spring Boot
		Summary
Part 4
	9 Deploying Spring Boot applications
		9.1 Running Spring Boot applications as executable JAR files
			9.1.1 Technique: Packaging and executing a Spring Boot application as an executable JAR file
		9.2 Deploying Spring Boot applications as WAR in the WildFly application server
			9.2.1 Technique: Packaging and deploying a Spring Boot application as WAR in the WildFly application server
		9.3 Deploying Spring Boot applications in Cloud Foundry
			9.3.1 Technique: Deploying a Spring Boot application to Cloud Foundry
		9.4 Deploying Spring Boot applications in Heroku
			9.4.1 Technique: Deploying a Spring Boot application in Heroku
		9.5 Running Spring Boot applications as Docker containers
			9.5.1 Technique: Creating a container image and running a Spring Boot application as a container
		9.6 Deploying Spring Boot applications in a Kubernetes cluster
			9.6.1 Technique: Deploying a Spring Boot application in a Kubernetes cluster
		9.7 Deploying Spring Boot applications in Red Hat OpenShift
			9.7.1 Technique: Deploying a Spring Boot application in the Red Hat OpenShift platform
		Summary
Part 5
	10 Spring Boot with Kotlin, Native Image, and GraphQL
		10.1 Spring Boot with Kotlin
			10.1.1 Technique: Developing a Spring Boot application with Kotlin
			10.1.2 Technique: Securing a Spring Boot Kotlin application with Spring Security
		10.2 Introducing Spring Native
			10.2.1 Introduction to GraalVM
			10.2.2 GraalVM native image
			10.2.3 Spring Boot native image
			10.2.4 Technique: Generating Spring Boot native image using buildpacks
			10.2.5 Technique: Generating Spring Boot native image using a Maven plugin
			10.2.6 Understanding Spring AOT Maven Plugin
		10.3 Spring Boot with GraphQL
			10.3.1 Issues with REST
			10.3.2 Introduction to GraphQL
			10.3.3 Using GraphQL with Spring Boot
			10.3.4 Technique: Developing a GraphQL API with a Spring Boot application
			10.3.5 Technique: Developing a GraphQL API over WebSocket with a Spring Boot application
		Summary
appendix A—Generating and building Spring Boot projects
	A.1 Generating Spring Boot applications with Spring Initializr
		A.1.1 Introducing Spring Initializr
		A.1.2 Technique: Generating a Spring Boot application with the Spring Initializr Web user interface
		A.1.3 Technique: Generating a Spring Boot application with Spring Initializr in IntelliJ IDEA IDE
		A.1.4 Technique: Generating a Spring Boot Application with Spring Initializr using the Spring Tool Suite
		A.1.5 Technique: Generating a Spring application with Spring Initializr in Visual Studio Code
		A.1.6 Technique: Generating a Spring Boot application with Spring Initializr using Command Line Interface
	A.2 Bootstrapping and executing a Spring Boot application with Spring Boot CLI
		A.2.1 Installing the Spring Boot CLI
		A.2.2 Technique: Developing a simple Spring Boot application with Spring Boot CLI
		A.2.3 Technique: Building a Web application using Spring Boot CLI
appendix B—Spring MVC and Thymeleaf Template Engine
	B.1 Revisiting Spring MVC
		B.1.1 Front controller design pattern
		B.1.2 Understanding request processing
	B.2 Understanding Thymeleaf
		B.2.1 Displaying attributes
		B.2.2 Conditional evaluation
		B.2.3 Managing forms
	B.3 Enabling a template engine in Spring Boot
		B.3.1 Technique: Building a Spring Boot Web application with Thymeleaf
index
	Numerics
	A
	B
	C
	D
	E
	F
	G
	H
	I
	J
	K
	L
	M
	N
	O
	P
	Q
	R
	S
	T
	U
	V
	W
	X
	Y