SpringBoot-CRUD-restAPI-GlobalException

Project Description:

The project aims to develop a CRUD (Create, Read, Update, Delete) application using Spring Boot, RESTful web services, Hibernate, and MySQL database. Additionally, it will include a global exception handler implemented using the @ControllerAdvice and @ExceptionHandler annotations.

Technologies Used:

• Java
• Spring Boot
• Hibernate
• MySQL
• RESTful web services

Project Structure:

1. Model: This package contains the entity classes representing the data objects in the application, such as User, Product, etc. These classes will be annotated with Hibernate annotations to map them to corresponding database tables.

2. Repository: This package contains interfaces that extend Spring Data JPA's CrudRepository or JpaRepository interfaces. These interfaces define the database operations for the entity classes. In this case, we'll have repositories for UserRepository, ProductRepository, etc.

3. Controller: This package contains the RESTful controller classes that expose endpoints for the CRUD operations. The controller classes will use the service classes to perform the desired operations. For instance, UserController will have methods like createUser, getUser, updateUser, and deleteUser, which will be mapped to the corresponding HTTP methods and endpoints.

4. ExceptionHandler: This package contains an exception handler class annotated with @ControllerAdvice. This class will handle global exceptions that occur within the application. The @ExceptionHandler annotation will be used to define methods that handle specific exceptions and return appropriate responses. For instance, ExceptionHandlerController may have a method annotated with @ExceptionHandler(value = {UserNotFoundException.class}) to handle the UserNotFoundException and return a custom error response.

5. Configuration: This package contains any additional configuration classes required for the application, such as database configuration, security configuration, etc.

6. Application: This class serves as the entry point for the application. It includes the main method to start the Spring Boot application.

7. Database: The project will utilize a MySQL database to store the data. The database connection details will be specified in the application configuration files (application.properties or application.yml).

With this project structure, you can implement the desired CRUD operations using RESTful endpoints and handle exceptions using the @ControllerAdvice and @ExceptionHandler annotations. Remember to configure the Hibernate settings and database connection details accordingly in the application configuration files.

This project will provide a robust and scalable solution for managing data through RESTful APIs while ensuring proper exception handling for a seamless user experience.