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。





在弹出的窗口中选择 EntityFramework 安装

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。





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





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

代码下载：http://pan.baidu.com/s/1sj6Ya2D