详解springmvc 接收json对象的两种方式

function fAddObj() {  var obj = {};  obj['objname'] = "obj";  obj['pid'] = 1 ;  $.ajax({    url: 'admin/Obj/addObj.do',    method: 'post',    contentType: 'application/json', // 这句不加出现415错误:Unsupported Media Type    data: JSON.stringify(obj), // 以json字符串方式传递    success: function(data) {      console.log("success...");    },    error: function(data) {      console.log("error...");    }  });}

@Controller@RequestMapping("/admin/Obj")public class ObjAction {  // 注入操作类  @Autowired  private ObjService objService ;  @RequestMapping(value = "/addObj")  @ResponseBody  public String addObj(@RequestBody Obj obj) {    this.objService.insertObj(cate);    return "success";  }}

@Controller@RequestMapping("/admin/Obj")public class ObjAction {  /**   * 前端操作与上面相同   * @return   */  @RequestMapping(value = "/updateAttr")  @ResponseBody  public String updateAttr(@RequestBody Map<String, String> map) {    if(map.containsKey("id"){      Integer id = Integer.parseInt(map.get("id"));    }    if(map.containsKey("objname"){      String objname = map.get("objname").toString();    }    if(map.containsKey("pid"){      Integer pid = Integer.parseInt(map.get("pid"));    }    // 操作 ...    return "success";  }}