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https://github.com/shubh2-0/springboot_annotations
This repository, SpringBoot Annotations, is a concise showcase of essential Spring Boot annotations. Learn to configure REST endpoints, perform dependency injection, and use services and repositories effectively. Level up your Spring Boot skills with this handy reference.
https://github.com/shubh2-0/springboot_annotations
annotations controller java restful-api spring spring-annotations spring-boot sts-code-platform
Last synced: 7 days ago
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This repository, SpringBoot Annotations, is a concise showcase of essential Spring Boot annotations. Learn to configure REST endpoints, perform dependency injection, and use services and repositories effectively. Level up your Spring Boot skills with this handy reference.
- Host: GitHub
- URL: https://github.com/shubh2-0/springboot_annotations
- Owner: Shubh2-0
- Created: 2023-07-30T07:12:30.000Z (over 1 year ago)
- Default Branch: main
- Last Pushed: 2023-09-08T11:44:09.000Z (about 1 year ago)
- Last Synced: 2024-05-01T13:47:23.905Z (7 months ago)
- Topics: annotations, controller, java, restful-api, spring, spring-annotations, spring-boot, sts-code-platform
- Language: Java
- Homepage:
- Size: 74.2 KB
- Stars: 14
- Watchers: 1
- Forks: 0
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
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README
# SpringBoot_Annotations
This repository contains examples and explanations of various Spring Boot annotations. Spring Boot is a powerful framework for building Java applications with minimal configuration. Annotations play a crucial role in configuring and customizing Spring Boot applications.
## Table of Contents
1. [Introduction](#introduction)
2. [Getting Started](#getting-started)
3. [Annotations](#annotations)
- 3.1 [**@RestController**](#restcontroller)
- 3.2 [**@RequestMapping**](#requestmapping)
- 3.3 [**@Autowired**](#autowired)
- 3.4 [**@Service**](#service)
- 3.5 [**@Repository**](#repository)
- 3.6 [**@Component**](#component)
4. [Usage](#usage)
5. [Contributing](#contributing)
## Introduction
Spring Boot is an opinionated framework that aims to simplify the development of production-ready applications using the Spring ecosystem. One of the core features of Spring Boot is its extensive use of annotations. These annotations help configure the behavior of various components, simplify dependency injection, and enable features like web service endpoints.
This repository serves as a reference for developers who want to understand the different annotations provided by Spring Boot and how they can be used in their projects.
## Getting Started
To get started, you need to have Java and Maven installed on your system. Clone this repository to your local machine and import it into your preferred Java IDE.
```bash
git clone https://github.com/Shubh2-0/SpringBoot_Annotations.git
```
## Annotations
This section covers some of the essential annotations used in Spring Boot applications.
### @RestController
The `@RestController` annotation combines `@Controller` and `@ResponseBody`. It is used to define RESTful web service endpoints that directly return JSON or XML responses.
```java
@RestController
public class ExampleController {
// Controller methods...
}
```
### @RequestMapping
The `@RequestMapping` annotation maps HTTP requests to specific controller methods. It allows you to define the URL paths and HTTP methods that trigger the corresponding methods.
```java
@RestController
@RequestMapping("/api")
public class ExampleController {
@RequestMapping(value = "/hello", method = RequestMethod.GET)
public String sayHello() {
return "Hello, World!";
}
}
```
### @Autowired
The `@Autowired` annotation is used for automatic dependency injection. It allows Spring to automatically wire beans into dependent objects.
```java
@Service
public class ExampleService {
// Service methods...
}
@RestController
public class ExampleController {
private final ExampleService exampleService;
@Autowired
public ExampleController(ExampleService exampleService) {
this.exampleService = exampleService;
}
// Controller methods using exampleService...
}
```
### @Service
The `@Service` annotation is used to mark a class as a service bean in Spring. Service beans typically hold business logic and are used to perform various operations.
```java
@Service
public class ExampleService {
// Service methods...
}
```
### @Repository
The `@Repository` annotation is used to indicate that a class is a repository (data access) bean. Repositories are responsible for database operations.
```java
@Repository
public class ExampleRepository {
// Repository methods...
}
```
### @Component
The `@Component` annotation is a generic stereotype for any Spring-managed component. It indicates that a class is a Spring component and should be auto-detected during classpath scanning.
```java
@Component
public class ExampleComponent {
// Component methods...
}
```
## Usage
To use this repository, clone it to your local machine and explore the examples provided for each annotation. You can run the Spring Boot application using Maven:
```bash
cd SpringBoot_Annotations
mvn spring-boot:run
```
Feel free to modify the examples or add your own annotations to experiment with Spring Boot's capabilities.
## Contributing
Contributions are welcome! If you find any issues or want to add more examples, feel free to open a pull request.
## 📬 Contact
If you want to contact me, you can reach me through below handles.
 
 
 
💓
We hope you find this repository helpful in understanding Spring Boot annotations. If you have any questions or need further assistance, please don't hesitate to reach out. Happy coding