Spring boot tutorial

Category : Spring Boot | Sub Category : Spring Boot | By Prasad Bonam Last updated: 2023-08-04 05:38:13 Viewed : 61

Spring boot tutorial:

I can provide you with a basic step-by-step tutorial to get started with Spring Boot. In this tutorial, we`ll create a simple Spring Boot application that displays a "Hello, World!" message.

Step 1: Setup Make sure you have the following prerequisites installed on your system:

  • Java Development Kit (JDK) 8 or higher
  • An Integrated Development Environment (IDE) like IntelliJ IDEA or Eclipse (optional but recommended)
  • Maven (optional but recommended for managing dependencies)

Step 2: Create a new Spring Boot project You can create a Spring Boot project using Spring Initializr, which is a web-based tool to generate a new project with the necessary dependencies. Follow these steps:

  1. Go to https://start.spring.io/ in your web browser.
  2. Set the following options:
    • Project: Maven Project
    • Language: Java
    • Spring Boot: Latest stable version
    • Project Metadata: Set your Group and Artifact (e.g., com.example) and give your project a name.
    • Dependencies: Leave it as default for now.
  3. Click on the "Generate" button to download the project as a ZIP file.

Step 3: Set up your project in the IDE (if using one) If you are using IntelliJ IDEA or Eclipse, import the downloaded project as a Maven project.

Step 4: Create a Spring Boot Controller In Spring Boot, a Controller is responsible for handling incoming HTTP requests and returning an HTTP response.

Create a new Java class in the appropriate package (e.g., com.example.demo) with the following content:

package com.example.demo; import org.springframework.web.bind.annotation.GetMapping; import org.springframework.web.bind.annotation.RestController; @RestController public class HelloWorldController { @GetMapping("/hello") public String hello() { return "Hello, World!"; } }

Step 5: Run the application To run the Spring Boot application, you can either use the Maven command-line or run it from your IDE.

If you are using Maven, open a terminal or command prompt, navigate to your projects root directory, and run the following command:

mvn spring-boot:run

If you are using an IDE, simply right-click on the main class (the one with the @SpringBootApplication annotation) and choose "Run" or "Run As" > "Spring Boot App."

Step 6: Access the application Once the application is running, open your web browser and go to http://localhost:8080/hello. You should see the "Hello, World!" message displayed on the page.

Congratulations! You have created and run your first Spring Boot application. From here, you can explore more features of Spring Boot, such as data access, security, and building RESTful APIs.

Remember that this tutorial provides a simple starting point, and Spring Boot is a powerful framework with many features and capabilities. You can refer to the official Spring Boot documentation for more in-depth information and examples: https://spring.io/projects/spring-boot

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