Dependencies<\/strong>: Spring Web, Spring Data JPA, H2 Database<\/li>\n<\/ul>\n\n\n\nDownload the project, unzip it, and open it in your IDE (e.g., IntelliJ IDEA, Eclipse, or VS Code).<\/p>\n\n\n\n
Step 2: Define the Model<\/h4>\n\n\n\n
Create a simple User<\/code> model class in the model<\/code> package:<\/p>\n\n\n\npackage com.example.demo.model;\n\nimport javax.persistence.Entity;\nimport javax.persistence.GeneratedValue;\nimport javax.persistence.Id;\n\n@Entity\npublic class User {\n @Id\n @GeneratedValue\n private Long id;\n private String name;\n private String email;\n\n \/\/ Getters and Setters\n}<\/code><\/pre>\n\n\n\nStep 3: Create a Repository<\/h4>\n\n\n\n
Create a repository interface to handle CRUD operations:<\/p>\n\n\n\n
package com.example.demo.repository;\n\nimport com.example.demo.model.User;\nimport org.springframework.data.jpa.repository.JpaRepository;\n\npublic interface UserRepository extends JpaRepository<User, Long> {\n}<\/code><\/pre>\n\n\n\nStep 4: Create the REST Controller<\/h4>\n\n\n\n
Now, create a REST controller that exposes an API to interact with the User<\/code> entity:<\/p>\n\n\n\npackage com.example.demo.controller;\n\nimport com.example.demo.model.User;\nimport com.example.demo.repository.UserRepository;\nimport org.springframework.web.bind.annotation.*;\n\nimport java.util.List;\n\n@RestController\n@RequestMapping(\"\/users\")\npublic class UserController {\n\n private final UserRepository userRepository;\n\n public UserController(UserRepository userRepository) {\n this.userRepository = userRepository;\n }\n\n @GetMapping\n public List<User> getAllUsers() {\n return userRepository.findAll();\n }\n\n @PostMapping\n public User createUser(@RequestBody User user) {\n return userRepository.save(user);\n }\n\n @GetMapping(\"\/{id}\")\n public User getUserById(@PathVariable Long id) {\n return userRepository.findById(id).orElse(null);\n }\n\n @PutMapping(\"\/{id}\")\n public User updateUser(@PathVariable Long id, @RequestBody User updatedUser) {\n User user = userRepository.findById(id).orElse(null);\n if (user != null) {\n user.setName(updatedUser.getName());\n user.setEmail(updatedUser.getEmail());\n return userRepository.save(user);\n }\n return null;\n }\n\n @DeleteMapping(\"\/{id}\")\n public void deleteUser(@PathVariable Long id) {\n userRepository.deleteById(id);\n }\n}<\/code><\/pre>\n\n\n\nStep 5: Run the Application<\/h4>\n\n\n\n
Run the application by executing the main<\/code> method in the DemoApplication<\/code> class. Spring Boot will start the embedded server and deploy the application.<\/p>\n\n\n\nOnce the application is running, you can use a tool like Postman or cURL to test the API endpoints.<\/p>\n\n\n\n
\nGET \/users<\/code> will return all users.<\/li>\n\n\n\nPOST \/users<\/code> with a JSON body will create a new user.<\/li>\n\n\n\nGET \/users\/{id}<\/code> will return a user by ID.<\/li>\n\n\n\nPUT \/users\/{id}<\/code> will update a user.<\/li>\n\n\n\nDELETE \/users\/{id}<\/code> will delete a user.<\/li>\n<\/ul>\n\n\n\nConclusion<\/h3>\n\n\n\n
Spring Boot has revolutionized Java development by reducing complexity and improving the development experience. It is widely used for building microservices and RESTful APIs due to its auto-configuration, ease of use, and scalability. With its rich ecosystem of libraries, frameworks, and community support, Spring Boot is an essential tool for modern Java developers. Whether you are building a small application or an enterprise-level system, Spring Boot provides the foundation for developing robust, production-ready applications.<\/p>\n","protected":false},"excerpt":{"rendered":"
Introduction to Spring Boot Spring Boot is a popular framework for building Java-based applications. It simplifies the development process by providing a comprehensive set of tools and conventions that allow developers to create production-ready applications with minimal configuration. Spring Boot builds on top of the Spring Framework, a powerful, flexible framework for Java applications, to […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-552","post","type-post","status-publish","format-standard","hentry","category-support"],"_links":{"self":[{"href":"https:\/\/www.mhtechin.com\/support\/wp-json\/wp\/v2\/posts\/552","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.mhtechin.com\/support\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.mhtechin.com\/support\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.mhtechin.com\/support\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.mhtechin.com\/support\/wp-json\/wp\/v2\/comments?post=552"}],"version-history":[{"count":1,"href":"https:\/\/www.mhtechin.com\/support\/wp-json\/wp\/v2\/posts\/552\/revisions"}],"predecessor-version":[{"id":553,"href":"https:\/\/www.mhtechin.com\/support\/wp-json\/wp\/v2\/posts\/552\/revisions\/553"}],"wp:attachment":[{"href":"https:\/\/www.mhtechin.com\/support\/wp-json\/wp\/v2\/media?parent=552"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.mhtechin.com\/support\/wp-json\/wp\/v2\/categories?post=552"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.mhtechin.com\/support\/wp-json\/wp\/v2\/tags?post=552"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}