微服务架构下Java功能开发的多样化实践

@RestController
public class UserController {
    
    @Autowired
    private UserService userService;
    
    @GetMapping("/users/{id}")
    public User getUser(@PathVariable("id") int id) {
        return userService.getUserById(id);
    }
    
    @PostMapping("/users")
    public User createUser(@RequestBody User user) {
        return userService.createUser(user);
    }
    
    @PutMapping("/users/{id}")
    public User updateUser(@PathVariable("id") int id, @RequestBody User user) {
        return userService.updateUser(id, user);
    }
    
    @DeleteMapping("/users/{id}")
    public void deleteUser(@PathVariable("id") int id) {
        userService.deleteUser(id);
    }
}

@Service
public class OrderService {
    
    @Autowired
    private RabbitTemplate rabbitTemplate;
    
    public void createOrder(Order order) {
        // 处理订单逻辑
        
        // 发送消息到队列
        rabbitTemplate.convertAndSend("orderQueue", order);
    }
    
    @RabbitListener(queues = "orderQueue")
    public void processOrder(Order order) {
        // 处理订单消息
    }
}

@SpringBootApplication
@EnableEurekaClient
public class Application {
    
    public static void main(String[] args) {
        SpringApplication.run(Application.class, args);
    }
}

@Repository
public interface UserRepository extends JpaRepository<User, Integer> {
    // 自定义查询方法
    List<User> findByAgeGreaterThan(int age);
}