Spring Boot Maven Project

Spring Boot which is build upon Spring foundation itself, takes convention over configuration to the next level by reducing the development time many-fold, enabling your projects up and running as quickly as possible.

Creating Spring Boot project by creating maven project. It includes the following steps.

Step 1) Select project type.

Step 2) Select project name and location.

Step 3) Configure the project by providing Group Id, Artifact Id and Project name.

Step 4) After clicking finish, Spring boot project has been created. Our new project looks like the following screen shot.

This Maven project has a pom.xml file which contains the following default configuration.

pom.xml


<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
  <modelVersion>4.0.0</modelVersion>
  <groupId>com.codeNuclear</groupId>
  <artifactId>spring-boot-example</artifactId>
  <version>0.0.1-SNAPSHOT</version>
  <name>Spring Boot Example</name>
</project>

<groupId>com.codeNuclear</groupId>

<artifactId>spring-boot-example</artifactId>

<version>0.0.1-SNAPSHOT</version>

<name>Spring Boot Example</name>

</project>

We need to configure it in order to make it a Spring Boot project. Here, we are adding parent to our Maven project. It is used to declare that our project is a child to this parent project.


<parent>  
    <groupId>org.springframework.boot</groupId>  
    <artifactId>spring-boot-starter-parent</artifactId>  
    <version>1.4.2.RELEASE</version>  
</parent>

<groupId>org.springframework.boot</groupId>

<artifactId>spring-boot-starter-parent</artifactId>

<version>1.4.2.RELEASE</version>

</parent>

After that add the following dependency to the pom.xml file. Here, we are adding web dependency by adding spring-boot-starter-web.


<dependencies>  
    <dependency>  
        <groupId>org.springframework.boot</groupId>  
        <artifactId>spring-boot-starter-web</artifactId>  
    </dependency>  
</dependencies>

<groupId>org.springframework.boot</groupId>

<artifactId>spring-boot-starter-web</artifactId>

</dependency>

</dependencies>

After that add Java version for the project.


<properties>  
    <java.version>1.8</java.version>  
</properties>

<java.version>1.8</java.version>

</properties>

Step 5) Now, our project should have the following directly structure. You can notice that maven has created a new dependency folder to store the jar files.

Step 6) Update Maven project each time after including new dependencies.

Step 7) After updating Maven. Now, Create a Java class inside the src/main/java package.

After creating class call the static run method of SpringApplication class. In the following code, we are calling run method and passing class name as argument.

SpringBootExample.java


package com.javatpoint;  
  
import org.springframework.boot.SpringApplication;  
import org.springframework.boot.autoconfigure.SpringBootApplication;  
  
@SpringBootApplication  
publicclass SpringBootExample {  
    publicstaticvoid main(String[] args) {  
        SpringApplication.run(SpringBootExample.class, args);  
    }  
}