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<dependencies><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-web</artifactId></dependency><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-data-jpa</artifactId></dependency></dependencies>
@SpringBootApplicationpublic class MyApp {
public static void main(String[] args) {
SpringApplication.run(MyApp.class, args);
}
}
@RestController@RequestMapping("/api/books")
public class BookController {
@Autowired
private BookService bookService;
@GetMapping
public List<Book> getAllBooks() {
return bookService.getAllBooks();
}
}
@Repositorypublic interface BookRepository extends JpaRepository<Book, Long> {
}
@Configuration@EnableWebSecuritypublic class SecurityConfig extends WebSecurityConfigurerAdapter {
@Overrideprotected void configure(HttpSecurity http) throws Exception {
http.authorizeRequests()
.anyRequest().authenticated()
.and()
.httpBasic();
}
@Autowiredpublic void configureGlobal(AuthenticationManagerBuilder auth) throws Exception {
auth.inMemoryAuthentication()
.withUser("user").password("{noop}password").roles("USER");
}
}
@Entity@Table(name = "articles")
public class Article {
@Id@GeneratedValue(strategy = GenerationType.IDENTITY)
private Long id;
private String title;
@Column(columnDefinition = "TEXT")
private String content;
// getters and setters
}
@Repositorypublic interface ArticleRepository extends JpaRepository<Article, Long> {
}
@Servicepublic class ArticleService {
@Autowiredprivate ArticleRepository articleRepository;
public List<Article> getAllArticles() {
return articleRepository.findAll();
}
public Article getArticleById(Long id) {
return articleRepository.findById(id)
.orElseThrow(() -> new EntityNotFoundException("Article not found"));
}
public Article createArticle(Article article) {
return articleRepository.save(article);
}
public Article updateArticle(Long id, Article article) {
Article existingArticle = articleRepository.findById(id)
.orElseThrow(() -> new EntityNotFoundException("Article not found"));
existingArticle.setTitle(article.getTitle());
existingArticle.setContent(article.getContent());
return articleRepository.save(existingArticle);
}
public void deleteArticle(Long id) {
articleRepository.deleteById(id);
}
}
@RestController
@RequestMapping("/api/articles")
public class ArticleController {
@Autowired
private ArticleService articleService;
@GetMapping
public List<Article> getAllArticles() {
return articleService.getAllArticles();
}
@GetMapping("/{id}")
public Article getArticleById(@PathVariable Long id) {
return articleService.getArticleById(id);
}
@PostMapping
public Article createArticle(@RequestBody Article article) {
return articleService.createArticle(article);
}
@PutMapping("/{id}")
public Article updateArticle(@PathVariable Long id, @RequestBody Article article) {
return articleService.updateArticle(id, article);
}
@DeleteMapping("/{id}")
public void deleteArticle(@PathVariable Long id) {
articleService.deleteArticle(id);
}
}
{
"title": "My first article",
"content": "This is my first article using Spring Boot"
}
mvn package in the project directory. This will create a JAR file in the target directory.java -jar articles.jar. This will start the application on port 8080.