python语言程序设计基础嵩天 pdf_苏州福田公司_中国企业标准信息网_拖拽生成h5页面
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);}}">