EasyFastCMS系列教学课程——1、三层框架的搭建

在本系列教程中，我们以一个大型CMS系统的完整开发流程为例，和大家一起探讨net开发的经验和教训。在本程序中，我们采用了流行的三层/N层框架+仓储模式的架构模式。项目分层示意图：

 

 

各层的主要用途：

• EasyFast.Web ——UI展示层，系统的操作界面。
• EasyFast.BLL ——业务逻辑层，用于处理程序中的业务逻辑。
• EasyFast.Model  ——用于在各层之间传递数据。
• EasyFast.Utility ——公共类库
• EasyFast.Repository ——数据操作（数据仓储层）
• EasyFast.DBContext ——ORM工具层

基本框架代码：

 

 

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Data;
using System.Data.SqlClient;

namespace EasyFast.Repository.Interface
{
    public interface IRepository<T> where T : class
    {
        T GetById(int id);
        T Find(string where, string orderColumn, List<SqlParameter> parameters);

        int Add(T model);
        int Delete(int id);
        int Update(T model);

        int GetPageCount(string tableName, string where, List<SqlParameter> parameters);
        DataTable GetPageList(string tableName, string fieldNames, string where, string orderColumn, int startRecordIndex, int endRecordIndex, List<SqlParameter> parameters);
        DataTable GetDataTable(string tableName, string fieldNames, string where, string orderColumn, List<SqlParameter> parameters);
    }
}

——目录结构：EasyFast.Repository.Interface.IRepository

 

 

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using EasyFast.Repository.Interface;
using System.Data;
using System.Data.SqlClient;

namespace EasyFast.Repository
{
    public class Repository<T> : IRepository<T> where T : class
    {
        public T GetById(int id)
        {
            T model = default(T);
            return model;
        }
        public T Find(string where, string orderColumn, List<SqlParameter> parameters)
        {
            T model = default(T);
            return model;
        }

        public int Add(T model)
        {
            int _result = ;
            return _result;
        }
        public int Delete(int id)
        {
            int _result = ;
            return _result;
        }
        public int Update(T model)
        {
            int _result = ;
            return _result;
        }

        public int GetPageCount(string tableName, string where, List<SqlParameter> parameters)
        {
            int _result = ;
            return _result;
        }
        public DataTable GetPageList(string tableName, string fieldNames, string where, string orderColumn, int startRecordIndex, int endRecordIndex, List<SqlParameter> parameters)
        {
            DataTable dt = new DataTable();
            return dt;
        }
        public DataTable GetDataTable(string tableName, string fieldNames, string where, string orderColumn, List<SqlParameter> parameters)
        {
            DataTable dt = new DataTable();
            return dt;
        }
    }
}

——目录结构：EasyFast.Repository.Repository

 

 

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Data;
using System.Data.SqlClient;
using EasyFast.Repository;
using EasyFast.Repository.Interface;

namespace EasyFast.BLL
{
    public class BaseBLL<T> where T : class
    {

        IRepository<T> repository = new Repository<T>();
        protected readonly Object lockHelper = new object();

        #region 获取model
        public T GetById(int id)
        {
            return repository.GetById(id);
        }
        public T Find(string where)
        {
            return repository.Find(where,"", null);
        }
        public T Find(string where, List<SqlParameter> parameters)
        {
            return repository.Find(where,"", parameters);
        }

        public T Find(string where, string orderColumn, List<SqlParameter> parameters)
        {
            return repository.Find(where, orderColumn, parameters);
        }
        #endregion

        #region 新增一条记录
        public int Add(T model)
        {
            return repository.Add(model);
        }
        #endregion

        #region 删除一条记录
        public int Delete(int id)
        {
            return repository.Delete(id);
        }
        #endregion

        #region 更新一条记录

        public int Update(T model)
        {
            return repository.Update(model);
        }
        #endregion

        #region 获取指定条件的记录集
        public virtual DataTable GetDataTable(string tableName, string fieldNames, string where, string orderColumn, List<SqlParameter> parameters)
        {
            return repository.GetDataTable(tableName, fieldNames, where, orderColumn, parameters);
        }

        public virtual DataTable GetDataTable(string fieldNames, string where, string orderColumn, List<SqlParameter> parameters)
        {
            return repository.GetDataTable("", fieldNames, where, orderColumn, parameters);
        }

        public virtual DataTable GetDataTable(string fieldNames, string where, List<SqlParameter> parameters)
        {
            return repository.GetDataTable("", fieldNames, where, "", parameters);
        }

        public virtual DataTable GetDataTable(string where, List<SqlParameter> parameters)
        {
            return repository.GetDataTable("", "*", where, "", parameters);
        }

        public virtual DataTable GetDataTable(string where)
        {
            return repository.GetDataTable("", "*", where, "", null);
        }

        public virtual DataTable GetDataTable()
        {
            return repository.GetDataTable("", "*", "", "", null);
        }
        #endregion

        #region 获取指定条件的记录数
        public virtual int GetPageCount(string tableName, string where, List<SqlParameter> parameters)
        {
            return repository.GetPageCount(tableName, where, parameters);
        }

        public virtual int GetPageCount(string where, List<SqlParameter> parameters)
        {
            return repository.GetPageCount("", where, parameters);
        }

        public virtual int GetPageCount(string where)
        {
            return repository.GetPageCount("", where, null);
        }

        public virtual int GetPageCount()
        {
            return repository.GetPageCount("", "", null);
        }
        #endregion

        #region 分页获取指定条件的记录
        public virtual DataTable GetPageList(string tableName, string fieldNames, string where, string orderColumn, int startRecordIndex, int endRecordIndex, List<SqlParameter> parameters)
        {
            return repository.GetPageList(tableName, fieldNames, where, orderColumn, startRecordIndex, endRecordIndex, parameters);
        }

        public virtual DataTable GetPageList(string tableName, string fieldNames, string where, int startRecordIndex, int endRecordIndex, List<SqlParameter> parameters)
        {
            return repository.GetPageList(tableName, fieldNames, where, "", startRecordIndex, endRecordIndex, parameters);
        }

        public virtual DataTable GetPageList(string fieldNames, string where, int startRecordIndex, int endRecordIndex, List<SqlParameter> parameters)
        {
            return repository.GetPageList("", fieldNames, where, "", startRecordIndex, endRecordIndex, parameters);
        }

        public virtual DataTable GetPageList(string where, int startRecordIndex, int endRecordIndex, List<SqlParameter> parameters)
        {
            return repository.GetPageList("", "*", where, "", startRecordIndex, endRecordIndex, parameters);
        }

        public virtual DataTable GetPageList(string where, int startRecordIndex, int endRecordIndex)
        {
            return repository.GetPageList("", "*", where, "", startRecordIndex, endRecordIndex, null);
        }

        public virtual DataTable GetPageList(int startRecordIndex, int endRecordIndex)
        {
            return repository.GetPageList("", "*", "", "", startRecordIndex, endRecordIndex, null);
        }
        #endregion
    }
}

——目录结构：EasyFast.BLL.BaseBLL

示例代码下载： EasyFastCMS-2014.05.28.zip