MVC4商城项目一：框架设计

代码已托管在  https://code.csdn.net/denghao156/ktnmb_mvc4

先上图，设计模式参考：ddmvc4.codeplex.com

一、unintofwork  设计模式  http://www.cnblogs.com/zxj159/p/3505457.html

     Unit Of Work模式会记录所有对象模型修改过的信息，在提交的时候，一次性修改，并把结果同步到数据库。 这个过程通常被封装在事务中。所以在DAL中采用Unit Of Work模式好处就在于能够确保数据的完整性，如果在持有一系列业务对象（同属于一个事务）的过程中出现问题，就可以将所有的修改回滚，以确保数据始终处于有效状态，不会出现脏数据。

1.1：Kt.DAL.UnitOfWork

　　　UnitOfWork  继承  DbContext 实现对实体模型的增删改查，通过base.SaveChanges() 来实现数据的更新，从而把缓存区的上下文更改的数据一次提交到数据来实现事务。

public UnitOfWork()

            : base("name=EntitiesDb")

        {

            this.Configuration.ProxyCreationEnabled = true;

           this.Configuration.LazyLoadingEnabled = true;

        }



     public void Commit()

        {

            base.SaveChanges();

        }



        public void CommitAndRefreshChanges()

        {

            bool saveFailed = false;



            do

            {

                try

                {

                    base.SaveChanges();



                    saveFailed = false;



                }

                catch (DbUpdateConcurrencyException ex)

                {

                    saveFailed = true;



                    ex.Entries.ToList()

                              .ForEach(entry =>

                              {

                                  entry.OriginalValues.SetValues(entry.GetDatabaseValues());

                              });



                }

            } while (saveFailed);



        }



        public void RollbackChanges()

        {

            base.ChangeTracker.Entries()

                              .ToList()

                              .ForEach(entry => entry.State = EntityState.Unchanged);

        }

View Code

1.2: Kt.DAL

　　基础仓储类对UnitOfWork 的引用来实现多个表实体的统一操作。

public class Repository<T> : IRepository<T>

        where T : class

    {

        #region Members



        IQueryableUnitOfWork _UnitOfWork;



        #endregion



        #region Constructor



        /// <summary>

        /// 创建仓储实例

        /// </summary>

        /// <param name="unitOfWork">Associated Unit Of Work</param>

        public Repository(IQueryableUnitOfWork unitOfWork)

        {

            if (unitOfWork == (IUnitOfWork)null)

                throw new ArgumentNullException("unitOfWork");



            _UnitOfWork = unitOfWork;

        }

View Code

 

1.3:Kt.Respository

　　User 表仓储类。

 public class UserRepository : Repository<User>, IUserRepository

    {

        public UserRepository(UnitOfWork unitOfWork)

            : base(unitOfWork)

        {



        }

    }

View Code

 

1.4:Kt.Service

　　User 表类的业务层的实现

  public class UserService : IUserService

    {

        private readonly IUserRepository _userRepository;

        public UserService(IUserRepository userRepository)

        {

            this._userRepository = userRepository;

        }



        public UserDto GetUserById(int id)

        {

            return KtMapper.CreateMap<User, UserDto>(_userRepository.Get(id));

        }



        public void AddUser(UserDto userDto)

        {

            User user = KtMapper.CreateMap<UserDto, User>(userDto);

            _userRepository.Add(user);

            _userRepository.UnitOfWork.Commit();

        }

View Code

 

二、Castle Windsor DI  MVC控制器依赖注入

1.1、Kt.Web

　　创建注入工厂

  /// <summary>

    /// 依赖注入工厂

    /// </summary>

    public class WindsorControllerFactory : DefaultControllerFactory

    {

        private readonly IKernel kernel;



        public WindsorControllerFactory(IKernel kernel)

        {

            this.kernel = kernel;

        }



        public override void ReleaseController(IController controller)

        {

            kernel.ReleaseComponent(controller);

        }



        protected override IController GetControllerInstance(RequestContext requestContext, Type controllerType)

        {

            if (controllerType == null)

            {

                throw new HttpException(404, string.Format("The controller for path '{0}' could not be found.", requestContext.HttpContext.Request.Path));

            }

            return (IController)kernel.Resolve(controllerType);

        }

    }

View Code

 

1.2、 Dependency 注入容器

 public void Install(IWindsorContainer container, IConfigurationStore store)

        {

            container.Register(Classes.FromThisAssembly()

                                .BasedOn<IController>()

                                .LifestyleTransient());



            container.Register(



                        Component.For<IQueryableUnitOfWork, UnitOfWork>().ImplementedBy<UnitOfWork>(),



                        Component.For<IUserRepository, UserRepository>().ImplementedBy<UserRepository>(),



                        Component.For<IUserService>().ImplementedBy<UserService>(),



                        AllTypes.FromThisAssembly().BasedOn<IHttpController>().LifestyleTransient()



                        )

                       .AddFacility<LoggingFacility>(f => f.UseLog4Net());



            LoggerFactory.SetCurrent(new TraceSourceLogFactory());

            EntityValidatorFactory.SetCurrent(new DataAnnotationsEntityValidatorFactory());

        }

View Code

 

1.3、MvcApplication 应用程序启动时控制器的依赖注入容器的实现

 public class MvcApplication : System.Web.HttpApplication

    {

        private readonly IWindsorContainer container;



        public MvcApplication()

        {

            this.container =

                new WindsorContainer().Install(new Dependency.Dependency());

        }



        public override void Dispose()

        {

            this.container.Dispose();

            base.Dispose();

        }

        protected void Application_Start()

        {

          

            AreaRegistration.RegisterAllAreas();



            WebApiConfig.Register(GlobalConfiguration.Configuration);

            FilterConfig.RegisterGlobalFilters(GlobalFilters.Filters);

            RouteConfig.RegisterRoutes(RouteTable.Routes);

            BundleConfig.RegisterBundles(BundleTable.Bundles);





            var controllerFactory = new WindsorControllerFactory(container.Kernel);

            ControllerBuilder.Current.SetControllerFactory(controllerFactory);

        }

    }

View Code

 

 

具体代码的实现见框架源代码：https://code.csdn.net/denghao156/ktnmb_mvc4

预计用的工具有：

• Visual Studio 2012
• ASP.NET MVC 4 with Razor View Engine
• Entity Framework 5.0
• Castle Windsor for DI
• SQL Server 2008/2012
• bootstrapt & JQuery
• automapper

本节参见大神所写，日后想自己做一个商城出来，代码持续更新到 code.csdn.net  ……