PostMan 参数如图:

@RestController
@RequestMapping("/sys/mytest")
public class SysMytestController extends BaseController { 

//方法1

    @PostMapping("/save1")public Result save(@Validated  @RequestBody  Map<String,Object>   mapList) { 
        String v1=mapList.get("v1").toString();
        String v2=mapList.get("v2").toString();
        return Result.succ("");
    }

//方法2 

   @PostMapping("/save2")
    public Result save1(@RequestBody JSONObject params ) { 
        String v1 = params.get("v1").toString();
        String v2 = params.get("v2").toString();
        return Result.succ("");    }