JAVA对标c# 操作sql java还有更简单的嘛？

#region mysql
        [Route("add2")]
        [HttpPost]
        public ContentResult add2([FromForm] body c)
        {
            //查询
            var result = Model.Connect.Mysql.Query().Where(a => a.key == c.key).FirstOrDefault();
            string msg = "已经存在";
            if (result == null)
            {//添加
                result = Model.Connect.Mysql.Insert(c);
            }
            else
            {
                if (c.type == "update")
                {//修改
                    int count = Model.Connect.Mysql.Update(a => a.key == a.key, n => new body()
                    {
                        values = c.values,
                        time = c.time
                    });
                }
            }
            string strJson = JsonConvert.SerializeObject(result);
            return new ContentResult { Content = msg + strJson, ContentType = "application/json" };
        }
        #endregion