java后台接收json的方式

ajax我经常用到，传的数据是json数据，json数据又有对象，数组。所有总结下springmvc获取前端传来的json数据方式：
1、以RequestParam接收
前端传来的是json数据不多时：[id:id],可以直接用@RequestParam来获取值

@Autowired
private AccomodationService accomodationService;

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

2、以实体类方式接收
前端传来的是一个json对象时：{【id，name】},可以用实体类直接进行自动绑定
@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
前端传来的是一个json对象时：{【id，name】},可以用Map来获取
@Autowired
private AccomodationService accomodationService;

@RequestMapping(value = "/update")
@ResponseBody
public String updateAttr(@RequestBody Map 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
当前端传来这样一个json数组：[{id,name},{id,name},{id,name},...]时，用List接收
@Autowired
private AccomodationService accomodationService;

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