后台管理

从这一部分开始做后台管理,首先是基本框架的

一、Data项目

1、项目添加EntityFramework引用

在Data项目的引用上右键-> 管理NuGet程序包。

1

在弹出的窗口中选择 EntityFramework 安装

2

2、添加排序枚举

在Data项目上点右键新建文件夹Type。在文件夹内添加类【OrderType】,代码如下

   //创建2014.12.8

namespace Data.Types
{
    /// <summary>
    /// 排序类型
    /// </summary>
    public enum OrderType
    {
        /// <summary>
        /// 不排序
        /// </summary>
        No,
        /// <summary>
        /// 正序
        /// </summary>
        Asc,
        /// <summary>
        /// 倒序
        /// </summary>
        Desc
    }
}

3、添加数据访问类

在Data项目上点右键新建类输入类名【BaseRepository】,这个类主要负责数数据的存取。

类内添加私有成员DbContext _baseDbContext用来在数据库进行增、删、改和查询。

BaseRepository有两个构造函数public BaseRepository()和public BaseRepository(string nameOrConnectionString)。第一个构造函数使用"NineskyConnection"名称的数据连接名称连接到数据库,第二个构造函数可以设置数据库连接名称或连接字符串。在该类中写了一些数据的增删改和查询方法。整个代码如下。

  using Ninesky.Data.Types;
using System;
using System.Collections.Generic;
using System.Data.Entity;
using System.Linq;
using System.Linq.Expressions;

namespace Ninesky.Data
{
    /// <summary>
    /// 数据仓储基类
    /// <remarks>
    /// 创建:2014.12.13
    /// </remarks>
    /// </summary>
    /// <typeparam name="T"></typeparam>
    public class BaseRepository<T> where T : class
    {
        private DbContext _baseDbContext;
        /// <summary>
        /// 构造函数
        /// </summary>
        /// <param name="dbContext">数据上下文</param>
        public BaseRepository(DbContext dbContext)
        {
            _baseDbContext = dbContext;
        }

        /// <summary>
        /// 添加
        /// </summary>
        /// <param name="entity">数据实体</param>
        /// <param name="isSave">是否立即保存</param>
        /// <returns></returns>
        public T Add(T entity, bool isSave = true)
        {
            _baseDbContext.Set<T>().Add(entity);
            if (isSave) _baseDbContext.SaveChanges();
            return entity;
        }

        /// <summary>
        /// 批量添加【立即执行】
        /// </summary>
        /// <param name="entities">数据列表</param>
        /// <returns>添加的记录数</returns>
        public int AddRange(IEnumerable<T> entities, bool isSave = true)
        {
            _baseDbContext.Set<T>().AddRange(entities);
            return isSave ? _baseDbContext.SaveChanges() : 0;
        }

        /// <summary>
        /// 修改
        /// </summary>
        /// <param name="entity">数据实体</param>
        /// <param name="isSave">是否立即保存</param>
        /// <returns></returns>
        public bool Update(T entity, bool isSave = true)
        {
            _baseDbContext.Set<T>().Attach(entity);
            _baseDbContext.Entry<T>(entity).State = EntityState.Modified;
            return isSave ? _baseDbContext.SaveChanges() > 0 : true;
        }

        /// <summary>
        /// 删除
        /// </summary>
        /// <param name="entity">数据实体</param>
        /// <param name="isSave">是否立即保存</param>
        /// <returns></returns>
        public bool Delete(T entity, bool isSave = true)
        {
            _baseDbContext.Set<T>().Attach(entity);
            _baseDbContext.Entry<T>(entity).State = EntityState.Deleted;
            return isSave ? _baseDbContext.SaveChanges() > 0 : true;
        }

        /// <summary>
        /// 批量删除
        /// </summary>
        /// <param name="entities">数据列表</param>
        /// <param name="isSave">是否立即保存</param>
        /// <returns>删除的记录数</returns>
        public int DeleteRange(IEnumerable<T> entities, bool isSave = true)
        {
            _baseDbContext.Set<T>().RemoveRange(entities);
            return isSave ? _baseDbContext.SaveChanges() : 0;
        }

        /// <summary>
        /// 保存
        /// </summary>
        /// <returns>受影响的记录数</returns>
        public int Save()
        {
            return _baseDbContext.SaveChanges();
        }

        /// <summary>
        /// 是否有满足条件的记录
        /// </summary>
        /// <param name="anyLamdba">条件表达式</param>
        /// <returns></returns>
        public bool Any(Expression<Func<T, bool>> anyLamdba)
        {
            return _baseDbContext.Set<T>().Any(anyLamdba);
        }

        /// <summary>
        /// 查询记录数
        /// </summary>
        /// <param name="countLamdba">查询表达式</param>
        /// <returns>记录数</returns>
        public int Count(Expression<Func<T, bool>> countLamdba)
        {
            return _baseDbContext.Set<T>().Count(countLamdba);
        }


        /// <summary>
        /// 查找实体
        /// </summary>
        /// <param name="ID">实体ID</param>
        /// <returns></returns>
        public T Find(int ID)
        {
            return _baseDbContext.Set<T>().Find(ID);
        }

        /// <summary>
        /// 查找实体 
        /// </summary>
        /// <param name="findLambda">Lambda表达式</param>
        /// <returns></returns>
        public T Find(Expression<Func<T, bool>> findLambda)
        {
            return _baseDbContext.Set<T>().SingleOrDefault(findLambda);
        }

        /// <summary>
        /// 查找所有列表
        /// </summary>
        /// <returns></returns>
        public IQueryable<T> FindAll()
        {
            return FindList<int>(0, T => true, OrderType.No, null);
        }

        /// <summary>
        /// 查找数据列表
        /// </summary>
        /// <param name="number">返回的记录数【0-返回所有】</param>
        /// <param name="whereLandba">查询条件</param>
        /// <param name="orderType">排序方式</param>
        /// <param name="orderLandba">排序条件</param>
        /// <returns></returns>
        public IQueryable<T> FindList<TKey>(int number, Expression<Func<T, bool>> whereLandba, OrderType orderType, Expression<Func<T, TKey>> orderLandba)
        {
            IQueryable<T> _tIQueryable = _baseDbContext.Set<T>().Where(whereLandba);
            switch (orderType)
            {
                case OrderType.Asc:
                    _tIQueryable = _tIQueryable.OrderBy(orderLandba);
                    break;
                case OrderType.Desc:
                    _tIQueryable = _tIQueryable.OrderByDescending(whereLandba);
                    break;
            }
            if (number > 0) _tIQueryable = _tIQueryable.Take(number);
            return _tIQueryable;
        }

        /// <summary>
        /// 
        /// </summary>
        /// <typeparam name="TKey">排序字段类型</typeparam>
        /// <param name="pageIndex">页码【从1开始】</param>
        /// <param name="pageNumber">每页记录数</param>
        /// <param name="totalNumber">总记录数</param>
        /// <param name="whereLandba">查询表达式</param>
        /// <param name="orderType">排序类型</param>
        /// <param name="orderLandba">排序表达式</param>
        /// <returns></returns>
        public IQueryable<T> FindPageList<TKey>(int pageIndex, int pageNumber, out int totalNumber, Expression<Func<T, bool>> whereLandba, OrderType orderType, Expression<Func<T, TKey>> orderLandba)
        {
            IQueryable<T> _tIQueryable = _baseDbContext.Set<T>().Where(whereLandba);
            totalNumber = _tIQueryable.Count();
            switch (orderType)
            {
                case OrderType.Asc:
                    _tIQueryable = _tIQueryable.OrderBy(orderLandba);
                    break;
                case OrderType.Desc:
                    _tIQueryable = _tIQueryable.OrderByDescending(whereLandba);
                    break;
            }
            _tIQueryable = _tIQueryable.Skip((pageIndex - 1) * pageNumber).Take(pageNumber);
            return _tIQueryable;
        }
    }
}

4、添加业务逻辑基类

在data项目右键添加【BaseService】,此类通过调用BaseRepository进行数据处理,作为业务逻辑的基类,其他业务类继承自此类。这个类的方法与BaseRepository比较相似,建立此类的主要体现分层的思路,一些数据访问的异常处理应该放在此类中。代码如下:

  using Ninesky.Data.Types;
using System;
using System.Collections.Generic;
using System.Data.Entity;
using System.Linq;
using System.Linq.Expressions;

namespace Ninesky.Data
{
    /// <summary>
    /// 业务逻辑基类
    /// <remarks>
    /// 创建:2014.12.13
    /// </remarks>
    /// </summary>
    public class BaseService<T> where T : class
    {
        private BaseRepository<T> _baseRepository;

        /// <summary>
        /// 创建业务逻辑类
        /// </summary>
        /// <param name="dbContext">数据上下文</param>
        public BaseService(DbContext dbContext)
        {
            _baseRepository = new BaseRepository<T>(dbContext);
        }

        /// <summary>
        /// 添加
        /// </summary>
        /// <param name="entity">数据实体</param>
        /// <returns>添加后的数据实体</returns>
        public T Add(T entity, bool isSave = true)
        {
            return _baseRepository.Add(entity, isSave);
        }

        ///// <summary>
        ///// 添加【必须先实例化才能使用】
        ///// </summary>
        ///// <param name="entity">数据实体</param>
        ///// <returns>添加后的记录ID</returns>
        //public virtual int Add(T entity) { return 0; }

        /// <summary>
        /// 批量添加
        /// </summary>
        /// <param name="entities">数据列表</param>
        /// <param name="isSave">是否立即保存</param>
        /// <returns></returns>
        public int AddRange(IEnumerable<T> entities, bool isSave = true)
        {
            return _baseRepository.AddRange(entities, isSave);
        }

        /// <summary>
        /// 修改
        /// </summary>
        /// <param name="entity">数据实体</param>
        /// <param name="isSave">是否立即保存</param>
        /// <returns></returns>
        public bool Update(T entity, bool isSave = true)
        {
            return _baseRepository.Update(entity, isSave);
        }

        /// <summary>
        /// 删除
        /// </summary>
        /// <param name="entity">数据实体</param>
        /// <param name="isSave">是否立即保存</param>
        /// <returns></returns>
        public bool Delete(T entity, bool isSave = true)
        {
            return _baseRepository.Delete(entity, isSave);
        }

        /// <summary>
        /// 批量删除
        /// </summary>
        /// <param name="entities">数据列表</param>
        /// <param name="isSave">是否立即保存</param>
        /// <returns>删除的记录数</returns>
        public int DeleteRange(IEnumerable<T> entities, bool isSave = true)
        {
            return _baseRepository.DeleteRange(entities, isSave);
        }

        /// <summary>
        /// 保存
        /// </summary>
        /// <returns>受影响的记录数</returns>
        public int Save()
        {
            return _baseRepository.Save();
        }

        /// <summary>
        /// 查询记录数
        /// </summary>
        /// <param name="countLamdba">查询表达式</param>
        /// <returns>记录数</returns>
        public int Count(Expression<Func<T, bool>> countLamdba)
        {
            return _baseRepository.Count(countLamdba);
        }


        /// <summary>
        /// 查找实体
        /// </summary>
        /// <param name="ID">实体ID</param>
        /// <returns></returns>
        public T Find(int ID)
        {
            return _baseRepository.Find(ID);
        }

        /// <summary>
        /// 查找实体 
        /// </summary>
        /// <param name="findLambda">Lambda表达式</param>
        /// <returns></returns>
        public T Find(Expression<Func<T, bool>> findLambda)
        {
            return _baseRepository.Find(findLambda);
        }

        /// <summary>
        /// 查找所有列表
        /// </summary>
        /// <returns></returns>
        public IQueryable<T> FindAll()
        {
            return _baseRepository.FindAll();
        }

        /// <summary>
        /// 查找数据列表
        /// </summary>
        /// <param name="number">返回的记录数【0-返回所有】</param>
        /// <param name="whereLandba">查询条件</param>
        /// <param name="orderType">排序方式</param>
        /// <param name="orderLandba">排序条件</param>
        /// <returns></returns>
        public IQueryable<T> FindList<TKey>(int number, Expression<Func<T, bool>> whereLandba, OrderType orderType, Expression<Func<T, TKey>> orderLandba)
        {
            return _baseRepository.FindList<TKey>(number, whereLandba, orderType, orderLandba);
        }

        /// <summary>
        /// 
        /// </summary>
        /// <typeparam name="TKey">排序字段类型</typeparam>
        /// <param name="pageIndex">页码【从1开始】</param>
        /// <param name="pageNumber">每页记录数</param>
        /// <param name="totalNumber">总记录数</param>
        /// <param name="whereLandba">查询表达式</param>
        /// <param name="orderType">排序类型</param>
        /// <param name="orderLandba">排序表达式</param>
        /// <returns></returns>
        public IQueryable<T> FindPageList<TKey>(int pageIndex, int pageNumber, out int totalNumber, Expression<Func<T, bool>> whereLandba, OrderType orderType, Expression<Func<T, TKey>> orderLandba)
        {
            return FindPageList<TKey>(pageIndex, pageNumber, out totalNumber, whereLandba, orderType, orderLandba);
        }
    }
}

二、User项目

1、建立管理员模型

在User项目的引用上点右键添加System.ComponentModel.DataAnnotations的引用和Ninesky.Data项目、E的引用。

添加引用

在User项目上点右键新建文件夹Models,在文件夹中添加类Administrator。代码如下:

  using System;
using System.ComponentModel.DataAnnotations;

namespace Ninesky.User.Models
{
    /// <summary>
    /// 管理员模型
    /// <remarks>
    /// 创建:2014.12.13
    /// </remarks>
    /// </summary>
    public class Administrator
    {
        [Key]
        public int AdministratorID { get; set; }

        /// <summary>
        /// 管理员账号
        /// </summary>
        [Required(ErrorMessage = "必须输入{0}")]
        [Display(Name = "管理员账号")]
        public string Account { get; set; }

        /// <summary>
        /// 管理员名称
        /// </summary>
        [Required(ErrorMessage = "必须输入{0}")]
        [Display(Name = "管理员名称")]
        public string Name { get; set; }
        /// <summary>
        /// 密码
        /// </summary>
        [Required(ErrorMessage = "必须输入{0}")]
        [Display(Name = "密码")]
        [DataType(DataType.Password)]
        public string Password { get; set; }

        /// <summary>
        /// 创建时间
        /// </summary>
        public DateTime CreateDate { get; set; }

        /// <summary>
        /// 上次登陆Ip
        /// </summary>
        public string LoginIp { get; set; }

        /// <summary>
        /// 上次登陆日期
        /// </summary>
        public Nullable<DateTime> LoginTime { get; set; }
    }
}

2、建立管理员业务逻辑类

在User项目上点右键添加AdministratorService类,该类继承自BaseService。

  using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using Ninesky.Data;
using Ninesky.User.Models;

namespace Ninesky.User
{
    /// <summary>
    /// 管理员业务逻辑类
    /// <remarks>
    /// 创建:2014.12.13
    /// </remarks>
    /// </summary>
    public class AdministratorService:BaseService<Administrator>
    {  public AdministratorService(DbContext dbContext) : base(dbContext) { }        
    }
}

三、Website项目

1、添加User项目的引用上右键添加对User项目的引用。

2、建立数据上下文

在Site项目上点右键添加类【NineskyDbContext】,继承自DbContext

  using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Data.Entity;
using Ninesky.User.Models;

namespace Ninesky.Website
{
    /// <summary>
    /// 网站数据上下文
    /// <remarks>
    /// 创建:2014.12.13
    /// </remarks>
    /// </summary>
    public class NineskyDbContext : DbContext
    {
        public DbSet<Administrator> Administrators { get; set; }

        public NineskyDbContext()
            : base("name=NineskyConnection")
        {
            Database.SetInitializer<NineskyDbContext>(new CreateDatabaseIfNotExists<NineskyDbContext>());
        }
    }
}

3、建立数据库连接

打开Web.config文件,在</configSections><appSettings>之间添加数据库的连接

  <connectionStrings>
    <add name="NineskyConnection" connectionString="Data Source=(LocalDb)\v11.0;AttachDbFilename=|DataDirectory|\Ninesky.mdf;Initial Catalog=Ninesky;Integrated Security=True;MultipleActiveResultSets=True" providerName="System.Data.SqlClient" />
  </connectionStrings>

4、建立简单工厂

在Website项目上点右键添加类【ContextFactory】,代码如下:

  using System.Runtime.Remoting.Messaging;

namespace Ninesky.Website
{
    /// <summary>
    /// 上下文简单工厂
    /// <remarks>
    /// 创建:2014.12.13
    /// </remarks>
    /// </summary>
    public class ContextFactory
    {
        /// <summary>
        /// 获取当前数据上下文
        /// </summary>
        /// <returns>数据上下文</returns>
        public static NineskyDbContext GetCurrentContext()
        {
            NineskyDbContext _nineskyDbContext = CallContext.GetData("NineskyDbContext") as NineskyDbContext;
            if (_nineskyDbContext == null)
            {
                _nineskyDbContext = new NineskyDbContext();
                CallContext.SetData("NineskyDbContext", _nineskyDbContext);
            }
            return _nineskyDbContext;
        }
    }
}

5、Config区域主界面

在Site项目的Config区域的Controller文件夹上点右键添加Home控制器,类型选择【MVC5控制器-空】。在添加的控制器中添加【Index】 action

  using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.Mvc;

namespace Ninesky.Website.Areas.Config.Controllers
{
    /// <summary>
    /// 主界面
    /// <remarks>
    /// 创建:2014.12.13
    /// </remarks>
    /// </summary>
    public class HomeController : Controller
    {
        // GET: Config/Home
        public ActionResult Index()
        {
            return View();
        }
    }
}

在Config区域Views/Share文件夹添加布局页【_Layout.cshtml】

在Index action上右键添加一个空视图

image

===========================

代码下载: http://pan.baidu.com/s/1sj6Ya2D

ASP.NET MVC5 网站开发实践第二版