Introduction to Spring Boot Starter Parent


350,000 Learners are learning everyday with our Best Selling Courses : Microservices, Spring, Spring Boot, Web Services, Hibernate, Full Stack React, Full Stack Angular, Python, Spring Interview Guide, Java Interview, Java Functional Programming, AWS, Docker, Kubernetes, PCF, AWS Fargate and Azure

This guide will help you understand how Spring Boot Starter Parent helps with managing dependency versions, the java version used by project and the default configuration for plug-ins.

You will learn

  • What is Spring Boot Starter Parent?
  • What are the important features of Spring Boot Starter Parent?
  • When do you use Spring Boot Starter Parent?

Free Courses - Learn in 10 Steps

Tools you will need

  • Maven 3.1+ is your build tool
  • Your favorite IDE. We use Eclipse.
  • JDK 1.8+

What is Spring Boot Starter Parent?

All Spring Boot projects typically use spring-boot-starter-parent as the parent in pom.xml.

    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>1.4.0.RELEASE</version>
    </parent>

Parent Poms allow you to manage the following things for multiple child projects and modules:

  • Configuration - Java Version and Other Properties
  • Depedency Management - Version of dependencies
  • Default Plugin Configuration

What is inside Spring Boot Starter Parent?

First of all - Spring Boot Starter Parent defines spring-boot-dependencies as the parent pom. It inherits dependency management from spring-boot-dependencies. Details in the next section.

<parent>
	<groupId>org.springframework.boot</groupId>
	<artifactId>spring-boot-dependencies</artifactId>
	<version>1.4.0.RELEASE</version>
	<relativePath>../../spring-boot-dependencies</relativePath>
</parent>

Default java version is 1.6. A project can override this by specifying a property <java.version>1.8</java.version> in the project pom. A few other settings related to encoding and source, target version are also set in the parent pom.

<java.version>1.6</java.version>
<resource.delimiter>@</resource.delimiter> <!-- delimiter that doesn't clash with Spring ${} placeholders -->
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
<maven.compiler.source>${java.version}</maven.compiler.source>
<maven.compiler.target>${java.version}</maven.compiler.target>

Spring Boot Starter Parent specifies the default configuration for a host of plugins including maven-failsafe-plugin, maven-jar-plugin and maven-surefire-plugin.

<plugin>
	<groupId>org.apache.maven.plugins</groupId>
	<artifactId>maven-failsafe-plugin</artifactId>
	<executions>
		<execution>
			<goals>
				<goal>integration-test</goal>
				<goal>verify</goal>
			</goals>
		</execution>
	</executions>
</plugin>
<plugin>
	<groupId>org.apache.maven.plugins</groupId>
	<artifactId>maven-jar-plugin</artifactId>
	<configuration>
		<archive>
			<manifest>
				<mainClass>${start-class}</mainClass>
				<addDefaultImplementationEntries>true</addDefaultImplementationEntries>
			</manifest>
		</archive>
	</configuration>
</plugin>
<plugin>
	<groupId>org.apache.maven.plugins</groupId>
	<artifactId>maven-surefire-plugin</artifactId>
	<configuration>
		<includes>
			<include>**/*Tests.java</include>
			<include>**/*Test.java</include>
		</includes>
		<excludes>
			<exclude>**/Abstract*.java</exclude>
		</excludes>
	</configuration>
</plugin>

What does Spring Boot Starter Parent inherit from spring-boot-dependencies?

Spring Boot Dependencies defines the default dependency management for all Spring Boot projects. If we would want to use a new version of a specific dependency, we can override the version by specifying a new property in the project pom. The extract below shows some of the important dependencies that are managed by Spring Boot Dependencies parent pom. Since Spring Boot Starter Parent inherit from spring-boot-dependencies, it shares all these characteristics as well.

<properties>
	<activemq.version>5.13.4</activemq.version>
	...
	<ehcache.version>2.10.2.2.21</ehcache.version>
	<ehcache3.version>3.1.1</ehcache3.version>
	...
	<h2.version>1.4.192</h2.version>
	<hamcrest.version>1.3</hamcrest.version>
	<hazelcast.version>3.6.4</hazelcast.version>
	<hibernate.version>5.0.9.Final</hibernate.version>
	<hibernate-validator.version>5.2.4.Final</hibernate-validator.version>
	<hikaricp.version>2.4.7</hikaricp.version>
	<hikaricp-java6.version>2.3.13</hikaricp-java6.version>
	<hornetq.version>2.4.7.Final</hornetq.version>
	<hsqldb.version>2.3.3</hsqldb.version>
	<htmlunit.version>2.21</htmlunit.version>
	<httpasyncclient.version>4.1.2</httpasyncclient.version>
	<httpclient.version>4.5.2</httpclient.version>
	<httpcore.version>4.4.5</httpcore.version>
	<infinispan.version>8.2.2.Final</infinispan.version>
	<jackson.version>2.8.1</jackson.version>
	....
	<jersey.version>2.23.1</jersey.version>
	<jest.version>2.0.3</jest.version>
	<jetty.version>9.3.11.v20160721</jetty.version>
	<jetty-jsp.version>2.2.0.v201112011158</jetty-jsp.version>
	<spring-security.version>4.1.1.RELEASE</spring-security.version>
	<tomcat.version>8.5.4</tomcat.version>
	<undertow.version>1.3.23.Final</undertow.version>
	<velocity.version>1.7</velocity.version>
	<velocity-tools.version>2.0</velocity-tools.version>
	<webjars-hal-browser.version>9f96c74</webjars-hal-browser.version>
	<webjars-locator.version>0.32</webjars-locator.version>
	<wsdl4j.version>1.6.3</wsdl4j.version>
	<xml-apis.version>1.4.01</xml-apis.version>
</properties>

Defines Maven 3.2.1 as the minimum version needed.

<prerequisites>
	<maven>3.2.1</maven>
</prerequisites>

What to Learn Next?

350,000 Learners are learning everyday with our Best Selling Courses : Microservices, Spring, Spring Boot, Web Services, Hibernate, Full Stack React, Full Stack Angular, Python, Spring Interview Guide, Java Interview, Java Functional Programming, AWS, Docker, Kubernetes, PCF, AWS Fargate and Azure


85,000 Subscribers are learning from our Free Videos on YouTube : JSP Servlets, Spring, Spring Boot, Spring MVC, Hibernate, Eclipse, Maven, JUnit, Mockito, Full Stack - React, Full Stack - Angular, Docker, Kubernetes, AWS, AWS Fargate, PCF and Azure


Here are the recommend articles to read next : Spring Interview Questions, Spring Boot Interview Questions, Microservices, Hibernate, Spring Security, REST API with Spring Boot, Full Stack with React, SOAP Web Services, Exception Handling, Embedded Servers, Spring Data Rest, Spring vs Spring MVC vs Spring Boot, Building Web Application and Spring Data JPA. You can checkout all our 100+ articles here - All Articles.


Do not know where to start your learning journey? Check out our amazing learning paths: Learning Path 01 - Spring and Spring Boot Web Applications and API Developer, Learning Path 02 - Full Stack Developer with Spring Boot, React & Angular, Learning Path 03 - Cloud Microservices Developer with Docker and Kubernetes, Learning Path 04 - Learn Cloud with Spring Boot, AWS, Azure and PCF and Learning Path 05 - Learn AWS with Microservices, Docker and Kubernetes


Related Posts

Deploy Java Spring Boot Applications to AWS, Azure, GCP with Docker and Kubernetes

In this article, we focus our attention on the cloud. How to learn the cloud and deploy Java Spring Boot Applications to AWS, Azure, GCP with Docker and Kubernetes?

Software Design - Single Responsibility Principle - with examples

For me, Single Responsibility Principle is the most important design principle. What is Single Responsibility Principle? How do you use it? How does it help with making your software better? Let's get started.

Spring Boot Tutorials for Beginners

At in28Minutes, we are creating a number of tutorials with videos, articles & courses on Spring Boot for Beginners and Experienced Developers. This resources will help you learn and gain expertise at Spring Boot.

Microservices with Spring Boot and Java - Part 1 - Getting Started

Let's learn the basics of microservices and microservices architectures. We will also start looking at a basic implementation of a microservice with Spring Boot. We will create a couple of microservices and get them to talk to each other using Eureka Naming Server and Ribbon for Client Side Load Balancing. In part 1 of this series, lets get introduced to the concept of microservices and understand how to create great microservices with Spring Boot and Spring Cloud.

20+ Spring Boot Projects with Code Examples

At in28Minutes, we have created more than 20 projects with code examples on Github. We have 50+ articles explaining these projects. These code examples will you learn and gain expertise at Spring Boot.

REST API Best Practices - With Design Examples from Java and Spring Web Services

Designing Great REST API is important to have great microservices. How do you design your REST API? What are the best practices?

Index - 500+ Videos

At in28Minutes, we are creating a number of tutorials with videos, articles & courses on Spring Boot for Beginners and Experienced Developers. Here's a list of video tutorials and courses for you

Creating Spring Boot and React Java Full Stack Application with Maven

This guide helps you create a Java full stack application with all the CRUD (Create, Read, Update and Delete) features using React as Frontend framework and Spring Boot as the backend REST API. We use Maven as the build tool.

Creating a SOAP Web Service with Spring Boot Starter Web Services

Let's learn how to create a SOAP Web Service with Spring Boot Starter Web Services. We will take a Contract First approach by definining an XSD and exposing a WSDL from it.