Spring boot

Spring Boot Day 11

Swayam Jugran's photo
Swayam Jugran
·

2 min read

Today on the 11th day of learning spring boot I learned about the creation of rest API using Spring Boot.

Creating a REST API using Spring Boot is a popular approach in Java-based web development. Spring Boot simplifies the process of building and deploying applications by providing a set of pre-configured defaults and opinionated dependencies. Below, I'll outline the steps to create a basic REST API using Spring Boot:

Prerequisites:

  1. JDK (Java Development Kit) installed on your system

  2. Your favorite IDE (Eclipse, IntelliJ IDEA, etc.) or a code editor

  3. Maven or Gradle installed (optional but recommended)

Step 1: Set Up a New Project You can use the Spring Initializr to generate a new Spring Boot project with the required dependencies. Visit start.spring.io and configure the project with the following options:

  • Project: "Maven Project" or "Gradle Project"

  • Language: "Java"

  • Spring Boot: Use the latest stable version available.

  • Group: Your package name (e.g., com.example)

  • Artifact: Your project name (e.g., my-rest-api)

  • Dependencies: Select "Spring Web" to include the necessary components for building a REST API.

After configuring the options, click "Generate" and download the project zip file. Extract the contents to a folder on your system.

Step 2: Set Up Your IDE (If using an IDE) If you're using an IDE like Eclipse or IntelliJ IDEA, import the project as a Maven or Gradle project (depending on your choice during project generation).

Step 3: Build the API Open the project in your IDE or code editor, and navigate to the main class, typically named "Application.java" or similar. This class contains the entry point of your Spring Boot application.

In this class, you'll find the @SpringBootApplication annotation, which includes the @ComponentScan and @EnableAutoConfiguration annotations. This is the main class that sets up your Spring Boot application.

Step 4: Create a Controller In Spring Boot, controllers handle incoming HTTP requests and map them to appropriate methods that process the requests and generate responses. Create a new Java class within your project and annotate it with @RestController.

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