【從零開始搭建本身的.NET Core Api框架】（三）集成輕量級ORM——SqlSugar：3.3 自動生成實體類

namespace RayPI.IService { /// <summary>
    /// 實體數據接口 /// </summary>
    public interface IEntity { /// <summary>
        /// 生成實體類 /// </summary>
        /// <param name="entityName"></param>
        /// <param name="filePath"></param>
        /// <returns></returns>
        bool CreateEntity(string entityName,string filePath); } }

IEntity

3）RayPI.Service 數據接口層

該數據層須要使用SqlSugarClient，SimpleClient已經知足不了咱們的需求了。

using RayPI.IService; using RayPI.Model; using SqlSugar; using System; namespace RayPI.Service { /// <summary>
    /// 實體操做服務 /// </summary>
    public class EntityService : BaseDB, IEntity { public SqlSugarClient db = GetClient(); /// <summary>
        /// 生成實體類 /// </summary>
        /// <param name="entityName"></param>
        /// <param name="filePath"></param>
        /// <returns></returns>
        public bool CreateEntity(string entityName,string filePath) { try { db.DbFirst.IsCreateAttribute().Where(entityName).CreateClassFile(filePath); return true; } catch (Exception) { return false; } } } }

EntityService

其中entityName爲表名，filePath爲該.cs文件存儲的位置。

4）RayPI 控制器層

新建一個控制器Entity，這裏，有個額外的工做，就是咱們要獲取到項目的實際路徑，方法是利用IHostingEnvironment

using Microsoft.AspNetCore.Hosting; using Microsoft.AspNetCore.Mvc; using RayPI.Bussiness.Admin; namespace RayPI.Controllers.Admin { /// <summary>
    /// 實體操做模塊 /// </summary>
    [Produces("application/json")] [Route("api/[controller]")] public class EntityController : Controller { private EntityBLL bll = new EntityBLL(); private readonly IHostingEnvironment _hostingEnvironment; /// <summary>
        /// 構造函數 /// </summary>
        /// <param name="hostingEnvironment"></param>
        public EntityController(IHostingEnvironment hostingEnvironment) { _hostingEnvironment = hostingEnvironment; } /// <summary>
        /// 生成實體類 /// </summary>
        /// <param name="entityName"></param>
        /// <returns></returns>
 [HttpPost] public JsonResult CreateEntity(string entityName=null) { if (entityName == null) return Json("參數爲空"); return Json(bll.CreateEntity(entityName,_hostingEnvironment.ContentRootPath)); } } }

EntityController

這裏的_hostingEnvironment.ContentRootPath獲取到的是主項目目錄，例如「D:\\MyProjects\RayPI/RayPI」，咱們要將實體類存入的地址應該是「D:\\MyProjects\RayPI/RayPI.Entity」下面，因此接下來還須要對這個地址進行相應操做。

5）RayPI.Bussiness 業務邏輯層

using RayPI.IService; using RayPI.Model; using RayPI.Service; namespace RayPI.Bussiness.Admin { public class EntityBLL { private IEntity iService = new EntityService(); public MessageModel<string> CreateEntity(string entityName,string contentRootPath) { string[] arr = contentRootPath.Split('\\'); string baseFileProvider = ""; for (int i = 0; i < arr.Length-1; i++) { baseFileProvider += arr[i]; baseFileProvider += "\\"; } string filePath = baseFileProvider + "RayPI.Entity"; if (iService.CreateEntity(entityName, filePath)) return new MessageModel<string> { Success = true, Msg = "生成成功" }; else
                return new MessageModel<string> { Success = false, Msg = "生成失敗" }; } } }