django User.objects.get()报错 raise self.model.DoesNotExist手动处理解决办法

def get(self,request,*args,**kwargs):

    if kwargs.get('id'):
        try:
            inst=JsonModels.objects.get(id=kwargs.get("id"))
            ser=SerialJson(instance=inst,many=False)
            print("xxxxxxxx",ser.data)
            return  Response(data=ser.data,status=200)
        except JsonModels.DoesNotExist:
            return CommonResponse(data={"data":{"message":"NotFound"}},
                                  code=404,msg="fail",status=404)