大兴网站建设设计公司_小型企业网站开发公司_页面设计素材背景_厦门关键词优化服务
public class ItemController {@Autowiredprivate ItemService itemService;@PostMappingpublic ResponseEntity<Item> createItem(@RequestBody Item item) {Item newItem = itemService.create(item);return new ResponseEntity<>(newItem, HttpStatus.CREATED);}@GetMapping("/{itemId}")public ResponseEntity<Item> getItemById(@PathVariable Long itemId) {Item item = itemService.findById(itemId);if (item != null) {return new ResponseEntity<>(item, HttpStatus.OK);} else {return new ResponseEntity<>(HttpStatus.NOT_FOUND);}}">