• MVC5 网站开发实践 2、后台管理


    目录

    MVC5 网站开发实践 概述

    MVC5 网站开发实践 1、建立项目

     

    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的构造函数public BaseRepository(DbContext dbContext)中dbContext为数据上下文。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

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  • 原文地址:https://www.cnblogs.com/mzwhj/p/4155896.html
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