ajax我經常用到，傳的資料是json資料，json資料又有物件，陣列。所有總結下springmvc獲取前端傳來的json資料方式： 1、以RequestParam接收 前端傳來的是json資料不多時：[id:id],可以直接用@RequestParam來獲取值

@Autowired private AccomodationService accomodationService;

@RequestMapping(value = "/update") @ResponseBody public String updateAttr(@RequestParam ("id") int id) {     int res=accomodationService.deleteData(id);     return "success"; }

2、以實體類方式接收 前端傳來的是一個json物件時：{【id，name】},可以用實體類直接進行自動繫結 @Autowired private AccomodationService accomodationService;

    @RequestMapping(value = "/add")     @ResponseBody     public String addObj(@RequestBody Accomodation accomodation) {         this.accomodationService.insert(accomodation);         return "success";     } 3、以Map接收 前端傳來的是一個json物件時：{【id，name】},可以用Map來獲取 @Autowired private AccomodationService accomodationService;

@RequestMapping(value = "/update") @ResponseBody public String updateAttr(@RequestBody Map<String, String> map) {     if(map.containsKey("id"){         Integer id = Integer.parseInt(map.get("id"));     }     if(map.containsKey("name"){         String objname = map.get("name").toString();     }     // 操作 ...     return "success"; } 4、以List接收 當前端傳來這樣一個json陣列：[{id,name},{id,name},{id,name},...]時，用List<E>接收 @Autowired private AccomodationService accomodationService;

@RequestMapping(value = "/update") @ResponseBody public String updateAttr(@RequestBody List<Accomodation> list) {     for(Accomodation accomodation:list){         System.out.println(accomodation.toString());     }     return "success"; }