Building an application with Spring Boot

Category : Spring Boot | Sub Category : Spring Boot | By Prasad Bonam Last updated: 2023-07-09 12:13:13 Viewed : 71

Building an application with Spring Boot involves a series of steps. Here is a step-by-step guide to help you get started:

Step 1: Set up the Development Environment

  • Install Java Development Kit (JDK) on your machine.
  • Set up your preferred Integrated Development Environment (IDE) such as IntelliJ IDEA, Eclipse, or Visual Studio Code.
  • Create a new project in your IDE.

Step 2: Create a Spring Boot Project

  • Use either your IDE or Spring Initializr ( to create a new Spring Boot project.
  • Select the necessary dependencies based on your application requirements (e.g., Spring Web, Spring Data JPA, Spring Security).
  • Generate and download the project structure as a ZIP file.

Step 3: Import and Configure the Project

  • Import the project into your IDE.
  • Update the project configuration files, such as or application.yml, to set up database connections, server ports, logging configurations, and other application-specific properties.

Step 4: Create Model Classes

  • Define your applications domain model by creating Java classes that represent entities, such as User, Product, or Order.
  • Annotate the model classes with appropriate JPA annotations for persistence and validation.

Step 5: Create Repository Interfaces

  • Define repository interfaces by extending the appropriate Spring Data repositories, such as CrudRepository or JpaRepository.
  • Implement custom query methods or use Spring Data is query derivation mechanism to automatically generate queries based on method names.

Step 6: Create Service Classes

  • Implement service classes to encapsulate the business logic of your application.
  • Inject repository interfaces or other services as dependencies using Springs @Autowired annotation.
  • Add additional annotations like @Service to mark the class as a service component.

Step 7: Create Controller Classes

  • Implement controller classes to handle incoming HTTP requests and define API endpoints.
  • Annotate the controller class with @RestController.
  • Define request mapping annotations (@GetMapping, @PostMapping, etc.) for specific endpoints.
  • Use service classes to perform business logic and return appropriate responses.

Step 8: Test Your Application

  • Write unit tests using testing frameworks like JUnit or TestNG to test individual components (controllers, services, repositories).
  • Use tools like Mockito or Springs @MockBean to mock dependencies in tests.
  • Write integration tests to test the applications end-to-end functionality.

Step 9: Build and Run Your Application

  • Use your IDEs build tools or a command-line build tool like Apache Maven or Gradle to build the application.
  • Run the application locally using your IDEs run configurations or via the command line.

Step 10: Deployment

  • Package your application into an executable JAR file using your build tool.
  • Deploy the JAR file to a server or cloud platform of your choice (e.g., Tomcat, AWS, Heroku).

Throughout the development process, you can refer to the Spring Boot documentation ( and the official Spring Framework documentation ( for more detailed information on various aspects of Spring Boot.

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