Java Spring Boot Implementation
Getting Started with Java Spring Boot
In this blog, we are going to tell you to step by step on how to use the Java Spring Boot for building a REST API.
Spring Boot assists you in building applications in a faster manner. What Spring Boot does is that it looks at an application’s classpath and at the beans which have been configured. After this, it makes reasonable assumptions about what is missing and adds those things which are missing. Spring Boot enables a company or the developer to focus more on the business aspect than on the infrastructure part of it.
The SpringBoot Edge
Spring Boot empowers building of production-ready applications quickly and allows non-functional -features such as:
- Embedded servers which are easy to deploy with containers
- It assists in monitoring the multiple components
- It also helps in configuring the components externally
In the next few steps, we are going to show you how you can create a REST API
What are we building?
To get a hang of things we will be building a REST API for blog posts. This will allow the person to search for a blog, fetch all blogs, get a single blog, create a blog or update and delete a blog.
Good understanding of Java Programming language
Basic Knowledge of Maven
Java Development Kit 1.7+
IntelliJ DEA, Netbeans, Eclipse or Spring Tool Suite (We will be using IntelliJ IDEA)
Commencing the Project
There are a minimum of three ways of creating Spring Boot Application and these are Spring Boot Initializer, Command Line Tool (CLI), and MAVEN with IDE. In this blog, we will only be covering how to create the application using MAVEN.
- We will open “IntelliJIDEA” and click on “Create New Project”
- We will then select “Maven Project”
- We will then need to fill the required information. ‘GroupID’ is a unique organizational name (In a majority of cases, people will generally use their company’s reverse domain name for example ‘com.mycompany’. ‘ArtifactID’ is the unique name of the project, and ‘Version’ is the version number of the project.
- After completing the setup, you should empty the project with a Maven config file named as ‘pom.xml’
- Because Maven is a dependency manager, you can add all the project dependencies on it. As of now, all we need is ‘Spring Boot’. The code should be copied into the ‘pom.xml’ file.
- The ‘Parent’ tag tells Maven to inherit the properties of ‘spring-boot-starter-parent’ such as port number, configurations, etc. All these are provided by Spring.
- The ‘Dependencies’ tag contains all the project dependencies. As of now we only have on dependency ‘Spring-Boot-Starter-Web’. In a complete application, there should be more such as MySQL, Socket. JSON Library etc.
- The ‘Build’ contains some plugins such as ‘Spring-Maven-Plugin”
- Update the Maven repository to download the dependencies
- We are now done with the configurations, we will now begin coding
The Main Class
- No matter which Java Application you are running, you need to have at least one ‘Main-Class’. Now create a class and name it ‘MainApplicationClass.Java’
- Now add the @SpringBootApplication’ annotation to the class in order to make it a Spring Boot Application
- You can now run the application. This is how you create a Spring Application