Spring Boot Project Structure Explained





Hey guys in this article, you will learn about Spring boot project structure from start to end with details explanation.

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Create spring boot project


There are many different ways to create a spring boot application, you can follow the below articles to create one –

>> Create spring boot application using Spring initializer
>> Create spring boot application in Spring tool suite [STS]
>> Create spring boot application in IntelliJ IDEA

Project Structure


If you create a spring boot project either using STS IDE or Spring Initializr, it follows the standard maven project sturcture
2

It creates so many files and folders. Let’s discuss these one by one in detail

  • src/main/java: Contains the java source code. It contains the base package by default. The base package contains the base class with main() method.
  • in.bushansirgur.springbootapp: This is the base package which is created by spring initializer. The package name is given at the time creating the project.
  • SpringbootappApplication.java: This is the base class, which contains the main() method with @SpringBootApplication annotation. This is the starting point to our spring boot application.
package in.bushansirgur.springbootapp;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;

@SpringBootApplication
public class SpringbootappApplication {

	public static void main(String[] args) {
		SpringApplication.run(SpringbootappApplication.class, args);
	}

}
  • src/main/resources: It contains static folder, templates folder and property file.
  • static: This folder contains the static files such as html, javascript, css files. If we are creating the spring boot web application then this folder may contain the static files.
  • templates: This folder contains the templates for our application. For example, if we are creating web application, if we use thymeleaf template engine then this folder contains all the UI templates.
  • src/test/java: It contains the java source files for Unit testing. This also contains the base package and base class for Unit testing.
  • JRE System library: This contains the JDK and JRE system related jars.
  • Maven Dependencies: This contains the dependency jars for our application.
  • src: This folder is same as the src/main/java
  • target: This folder contains the war/jar and build related files after the application is successfully build.
  • HELP.md: This file contains the reference links for spring boot and apache tomcat
  • mvnw: These are the Maven wrapper files, which allows us to run the maven project on Linux/mac
  • mvnw.cmd: This is also Maven wrapper files, which allows us to run the maven project on Windows platform
  • pom.xml: It contains the project related information and dependencies used in the application.

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About the author

Bushan Sirgur

Hey guys, I am Bushan Sirgur from Banglore, India. Currently, I am working as an Associate project in an IT company.

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