【干货】利用MVC5+EF6搭建博客系统（一）EF Code frist、实现泛型数据仓储以及业务逻辑

习MVC有一段时间了，决定自己写一套Demo了，写完源码再共享。

PS:如果图片模糊，鼠标右击复制图片网址，然后在浏览器中打开即可。

一、框架搭建

using _52MVCBlog.IRepository.Base;
using _52MVCBlog.IService.Base;
using _52MVCBlog.Repository.Base;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Linq.Expressions;
using System.Text;
using System.Threading.Tasks;

namespace _52MVCBlog.Service.Base
{
public class BaseServices<TEntity> : IBaseServices<TEntity> where TEntity : class
{
private IBaseRepository<TEntity> baseDal = new BaseRepository<TEntity>();

#region 查询
/// <summary>
/// 单表查询
/// </summary>
/// <param name="predicate"></param>
/// <returns></returns>
public List<TEntity> QueryWhere(Expression<Func<TEntity, bool>> predicate)
{
return baseDal.QueryWhere(predicate);
}

/// <summary>
/// 多表关联查询
/// </summary>
/// <param name="predicate"></param>
/// <param name="tableNames"></param>
/// <returns></returns>
public List<TEntity> QueryJoin(Expression<Func<TEntity, bool>> predicate, string[] tableNames)
{
return baseDal.QueryJoin(predicate, tableNames);

}

/// <summary>
/// 升序查询还是降序查询
/// </summary>
/// <typeparam name="TKey"></typeparam>
/// <param name="predicate"></param>
/// <param name="keySelector"></param>
/// <param name="IsQueryOrderBy"></param>
/// <returns></returns>
public List<TEntity> QueryOrderBy<TKey>(Expression<Func<TEntity, bool>> predicate, Expression<Func<TEntity, TKey>> keySelector, bool IsQueryOrderBy)
{
return baseDal.QueryOrderBy(predicate, keySelector, IsQueryOrderBy);
}

/// <summary>
/// 升序分页查询还是降序分页
/// </summary>
/// <typeparam name="TKey"></typeparam>
/// <param name="pageIndex">第几页</param>
/// <param name="pagesize">一页多少条</param>
/// <param name="rowcount">返回共多少条</param>
/// <param name="predicate">查询条件</param>
/// <param name="keySelector">排序字段</param>
/// <param name="IsQueryOrderBy">true为升序 false为降序</param>
/// <returns></returns>
public List<TEntity> QueryByPage<TKey>(int pageIndex, int pagesize, out int rowcount, Expression<Func<TEntity, bool>> predicate, Expression<Func<TEntity, TKey>> keySelector, bool IsQueryOrderBy)
{

return baseDal.QueryByPage(pageIndex, pagesize, out rowcount, predicate, keySelector, IsQueryOrderBy);

}
#endregion

#region 编辑
/// <summary>
/// 通过传入的model加需要修改的字段来更改数据
/// </summary>
/// <param name="model"></param>
/// <param name="propertys"></param>
public void Edit(TEntity model, string[] propertys)
{
baseDal.Edit(model, propertys);
}

/// <summary>
/// 直接查询之后再修改
/// </summary>
/// <param name="model"></param>
public void Edit(TEntity model)
{
baseDal.Edit(model);
}
#endregion

#region 删除
public void Delete(TEntity model, bool isadded)
{
baseDal.Delete(model, isadded);
}
#endregion

#region 新增
public void Add(TEntity model)
{
baseDal.Add(model);
}
#endregion

#region 统一提交
public int SaverChanges()
{
return baseDal.SaverChanges();
}
#endregion

#region 调用存储过程返回一个指定的TResult
public List<TResult> RunProc<TResult>(string sql, params object[] pamrs)
{
return baseDal.RunProc<TResult>(sql, pamrs);
}
#endregion
}
}

View Code

到目前为止数据库、仓储层、业务逻辑层的父类和父接口都实现了，下一篇博文就在UI层怎么调用