springmvc 接收json对象的两种方式

1、以实体类方式接收

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(obj);
return "success";
}
}

2、以Map接收

@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";
}
}