{"id":27327,"date":"2024-03-16T08:16:49","date_gmt":"2024-03-16T08:16:49","guid":{"rendered":"https:\/\/www.silicloud.com\/blog\/example-of-implementing-create-read-update-and-delete-operations-using-spring-boot\/"},"modified":"2024-03-22T10:46:05","modified_gmt":"2024-03-22T10:46:05","slug":"example-of-implementing-create-read-update-and-delete-operations-using-spring-boot","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/blog\/example-of-implementing-create-read-update-and-delete-operations-using-spring-boot\/","title":{"rendered":"Example of implementing create, read, update, and delete operations using Spring Boot."},"content":{"rendered":"

Below is an example code implementing CRUD operations using Spring Boot.<\/p>\n

    \n
  1. Firstly, create a entity class, such as User.java:<\/li>\n<\/ol>\n
    @Entity\r\npublic class User {\r\n    @Id\r\n    @GeneratedValue(strategy = GenerationType.IDENTITY)\r\n    private Long id;\r\n\r\n    private String name;\r\n    private int age;\r\n    private String email;\r\n\r\n    \/\/ getters and setters\r\n}\r\n<\/code><\/pre>\n
      \n
    1. Create a Repository interface, such as UserRepository.java.<\/li>\n<\/ol>\n
      @Repository\r\npublic interface UserRepository extends JpaRepository<User, Long> {\r\n}\r\n<\/code><\/pre>\n
        \n
      1. Create a Service class, for example UserService.java:<\/li>\n<\/ol>\n
        @Service\r\npublic class UserService {\r\n    private final UserRepository userRepository;\r\n\r\n    public UserService(UserRepository userRepository) {\r\n        this.userRepository = userRepository;\r\n    }\r\n\r\n    public List<User> getAllUsers() {\r\n        return userRepository.findAll();\r\n    }\r\n\r\n    public User getUserById(Long id) {\r\n        return userRepository.findById(id).orElse(null);\r\n    }\r\n\r\n    public User createUser(User user) {\r\n        return userRepository.save(user);\r\n    }\r\n\r\n    public void deleteUser(Long id) {\r\n        userRepository.deleteById(id);\r\n    }\r\n\r\n    public User updateUser(Long id, User user) {\r\n        User existingUser = userRepository.findById(id).orElse(null);\r\n        if (existingUser != null) {\r\n            existingUser.setName(user.getName());\r\n            existingUser.setAge(user.getAge());\r\n            existingUser.setEmail(user.getEmail());\r\n            return userRepository.save(existingUser);\r\n        } else {\r\n            return null;\r\n        }\r\n    }\r\n}\r\n<\/code><\/pre>\n
          \n
        1. Create a Controller class, for example UserController.java:<\/li>\n<\/ol>\n
          @RestController\r\n@RequestMapping(\"\/users\")\r\npublic class UserController {\r\n    private final UserService userService;\r\n\r\n    public UserController(UserService userService) {\r\n        this.userService = userService;\r\n    }\r\n\r\n    @GetMapping(\"\/\")\r\n    public List<User> getAllUsers() {\r\n        return userService.getAllUsers();\r\n    }\r\n\r\n    @GetMapping(\"\/{id}\")\r\n    public User getUserById(@PathVariable Long id) {\r\n        return userService.getUserById(id);\r\n    }\r\n\r\n    @PostMapping(\"\/\")\r\n    public User createUser(@RequestBody User user) {\r\n        return userService.createUser(user);\r\n    }\r\n\r\n    @DeleteMapping(\"\/{id}\")\r\n    public void deleteUser(@PathVariable Long id) {\r\n        userService.deleteUser(id);\r\n    }\r\n\r\n    @PutMapping(\"\/{id}\")\r\n    public User updateUser(@PathVariable Long id, @RequestBody User user) {\r\n        return userService.updateUser(id, user);\r\n    }\r\n}\r\n<\/code><\/pre>\n
            \n
          1. Add the annotation @SpringBootApplication to the main class of the Spring Boot application, and then run the application.<\/li>\n<\/ol>\n
            Now, you can use the following API for CRUD operations.<\/p>\n
              \n
            1. Get all users: GET \/users\/<\/li>\n
            2. Retrieve specific user: GET \/users\/{id}<\/li>\n
            3. Create user: POST request to \/users\/<\/li>\n
            4. Remove user: DELETE \/users\/{id}<\/li>\n
            5. Update user: PUT request to \/users\/{id}<\/li>\n<\/ol>\n
              Please note that the above code is just an example and you can make appropriate modifications based on your specific requirements.<\/p>\n","protected":false},"excerpt":{"rendered":"
              Below is an example code implementing CRUD operations using Spring Boot. Firstly, create a entity class, such as User.java: @Entity public class User { @Id @GeneratedValue(strategy = GenerationType.IDENTITY) private Long id; private String name; private int age; private String email; \/\/ getters and setters } Create a Repository interface, such as UserRepository.java. @Repository public interface […]<\/p>\n","protected":false},"author":12,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_import_markdown_pro_load_document_selector":0,"_import_markdown_pro_submit_text_textarea":"","footnotes":""},"categories":[1],"tags":[],"class_list":["post-27327","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"yoast_head":"\nExample of implementing create, read, update, and delete operations using Spring Boot. - Blog - Silicon Cloud<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.silicloud.com\/blog\/example-of-implementing-create-read-update-and-delete-operations-using-spring-boot\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Example of implementing create, read, update, and delete operations using Spring Boot.\" \/>\n<meta property=\"og:description\" content=\"Below is an example code implementing CRUD operations using Spring Boot. Firstly, create a entity class, such as User.java: @Entity public class User { @Id @GeneratedValue(strategy = GenerationType.IDENTITY) private Long id; private String name; private int age; private String email; \/\/ getters and setters } Create a Repository interface, such as UserRepository.java. @Repository public interface […]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.silicloud.com\/blog\/example-of-implementing-create-read-update-and-delete-operations-using-spring-boot\/\" \/>\n<meta property=\"og:site_name\" content=\"Blog - Silicon Cloud\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/SiliCloudGlobal\/\" \/>\n<meta property=\"article:published_time\" content=\"2024-03-16T08:16:49+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2024-03-22T10:46:05+00:00\" \/>\n<meta name=\"author\" content=\"Liam\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@SiliCloudGlobal\" \/>\n<meta name=\"twitter:site\" content=\"@SiliCloudGlobal\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Liam\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"2 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/www.silicloud.com\/blog\/example-of-implementing-create-read-update-and-delete-operations-using-spring-boot\/#article\",\"isPartOf\":{\"@id\":\"https:\/\/www.silicloud.com\/blog\/example-of-implementing-create-read-update-and-delete-operations-using-spring-boot\/\"},\"author\":{\"name\":\"Liam\",\"@id\":\"https:\/\/www.silicloud.com\/blog\/#\/schema\/person\/23786905eb7b377f45ddb01c17da7671\"},\"headline\":\"Example of implementing create, read, update, and delete operations using Spring Boot.\",\"datePublished\":\"2024-03-16T08:16:49+00:00\",\"dateModified\":\"2024-03-22T10:46:05+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/www.silicloud.com\/blog\/example-of-implementing-create-read-update-and-delete-operations-using-spring-boot\/\"},\"wordCount\":134,\"commentCount\":0,\"publisher\":{\"@id\":\"https:\/\/www.silicloud.com\/blog\/#organization\"},\"inLanguage\":\"en-US\"},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.silicloud.com\/blog\/example-of-implementing-create-read-update-and-delete-operations-using-spring-boot\/\",\"url\":\"https:\/\/www.silicloud.com\/blog\/example-of-implementing-create-read-update-and-delete-operations-using-spring-boot\/\",\"name\":\"Example of implementing create, read, update, and delete operations using Spring Boot. - 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