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Spring Boot 2.0 Cookbook

By : Antonov

2 (3)

Buy this Book

Spring Boot 2.0 Cookbook

2 (3)

By: Antonov

Buy this Book

Overview of this book

The Spring framework provides great flexibility for Java development, which also results in tedious configuration work. Spring Boot addresses the configuration difficulties of Spring and makes it easy to create standalone, production-grade Spring-based applications. This practical guide makes the existing development process more efficient. Spring Boot Cookbook 2.0 Second Edition smartly combines all the skills and expertise to efficiently develop, test, deploy, and monitor applications using Spring Boot on premise and in the cloud. We start with an overview of the important Spring Boot features you will learn to create a web application for a RESTful service. Learn to fine-tune the behavior of a web application by learning about custom routes and asset paths and how to modify routing patterns. Address the requirements of a complex enterprise application and cover the creation of custom Spring Boot starters. This book also includes examples of the new and improved facilities available to create various kinds of tests introduced in Spring Boot 1.4 and 2.0, and gain insights into Spring Boot DevTools. Explore the basics of Spring Boot Cloud modules and various Cloud starters to make applications in “Cloud Native” and take advantage of Service Discovery and Circuit Breakers.

Preface

Who this book is for

What this book covers

To get the most out of this book

Sections

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Free Chapter

Getting Started with Spring Boot

Introduction

Using a Spring Boot template and starter

Creating a simple application

Launching an application using Gradle

Using the command-line runners

Setting up a database connection

Setting up a data repository service

Scheduling executors

Configuring Web Applications

Creating a basic RESTful application

Creating Spring Data REST service

Configuring custom servlet filters

Configuring custom interceptors

Configuring custom HttpMessageConverters

Configuring custom PropertyEditors

Configuring custom type formatters

Web Framework Behavior Tuning

Introduction

Configuring route matching patterns

Configuring custom static path mappings

Tuning Tomcat via ServletWebServerFactory

Choosing embedded servlet containers

Adding custom connectors

Writing Custom Spring Boot Starters

Introduction

Understanding Spring Boot autoconfiguration

Creating a custom Spring Boot autoconfiguration starter

Configuring custom conditional bean instantiations

Using custom @Enable annotations to toggle configuration

Application Testing

Introduction

Creating tests for MVC controllers

Configuring a database schema and populating it

Creating tests using an in-memory database

Creating tests using mock objects

Creating a JPA component test

Creating a WebMvc component test

Writing tests using Cucumber

Writing tests using Spock

Application Packaging and Deployment

Introduction

Creating a Spring Boot executable JAR

Creating Docker images

Building self-executing binaries

Spring Boot environment configuration, hierarchy, and precedence

Adding a custom PropertySource to the environment using EnvironmentPostProcessor

Externalizing an environmental configuration using property files

Externalizing an environmental configuration using environment variables

Externalizing an environmental configuration using Java system properties

Externalizing an environmental config using JSON

Setting up Consul

Externalizing an environmental config using Consul and envconsul

Health Monitoring and Data Visualization

Introduction

Writing custom health indicators

Configuring management context

Emitting metrics

Monitoring Spring Boot via JMX

Managing Spring Boot via SSHd Shell and writing custom remote Shell commands

Integrating Micrometer metrics with Graphite

Integrating Micrometer metrics with Dashing

Spring Boot DevTools

Introduction

Adding Spring Boot DevTools to a project

Configuring LiveReload

Configuring dynamic application restart triggers

Using Remote Update

Spring Cloud

Introduction

Getting started with Spring Cloud

Service discovery using Spring Cloud Consul

Using Spring Cloud Netflix – Feign

Service discovery using Spring Cloud Netflix – Eureka

Using Spring Cloud Netflix – Hystrix

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Creating a JPA component test

Most of our previous test examples had to start up the entire application and configure all the beans in order to execute. While that is not a big issue for our simple application, which has little code, it might prove an expensive and lengthy process for some larger, more complex enterprise-grade services. Considering that one of the key aspects of having good test coverage is a low execution time, we might want to opt out of having to bootstrap the entire application in order to test just one component, or slice, as Spring Boot refers to it.

In this recipe, we will try to create a similar test to our previous PublisherRepository one, but without starting the entire container and initializing all the beans. Conveniently, Spring Boot provides us with the @DataJpaTest annotation, which we can put on our test class, and it will automatically configure...