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Write a simple service and controller class in Spring Boot for REST API

Python/Codingeasy0.3 min readPremium
Frequency
Low
Asked at 1 company
Category
179
questions in Python/Coding
Difficulty Split
127E|24M|28H
in this category
Total Bank
1,863
across 7 categories
Asked at these companies
Walmart
Expert AnswerPremium
51 wordsInterview-ready
**Layers:** Controller = HTTP, validation, DTOs. Service = business logic, transactions. Repository = data access. Thin controller, fat service. @RestController @RequestMapping("/api") class DataController { @Autowired DataService service; @GetMapping("/items/{id}") public ResponseEntity<Item> get(@PathVariable Long id) { return ResponseEntity.ok(service.findById(id)); } } @Service class DataService { public Item findById(Long id) { return repo.findById(id).orElseThrow()...
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