C#进阶系列——DDD领域驱动设计初探（七）：Web层的搭建

前言：好久没更新博客了，每天被该死的业务缠身，今天正好一个模块完成了，继续来完善我们的代码。之前的六篇完成了领域层、应用层、以及基础结构层的部分代码，这篇打算搭建下UI层的代码。

DDD领域驱动设计初探系列文章：

一、UI层介绍

在DDD里面，UI层的设计也分为BS和CS，本篇还是以Web为例来说明。我们的Web采用的是MVC+bootstrap的架构。Table组件使用的是bootstrap table，之所以用它是因为它的API比较全，并且博主觉得它的风格适用于各种类型的设备，无论是PC端还是手机端都都能很好的兼容各种浏览器。

这里还是贴出bootstrap API的相关地址。

Bootstrap中文网：http://www.bootcss.com/

Bootstrap Table Demo：http://issues.wenzhixin.net.cn/bootstrap-table/index.html

Bootstrap Table API：http://bootstrap-table.wenzhixin.net.cn/zh-cn/documentation/

Bootstrap Table源码：https://github.com/wenzhixin/bootstrap-table

Bootstrap DataPicker：http://www.bootcss.com/p/bootstrap-datetimepicker/

Bootstrap离线API

二、代码示例

上篇完成了WCF的设计代码，但是具体的业务逻辑的代码还没有，我们先来实现具体业务的CURD代码。

1、WCF代码

1.1 WCF服务业务接口代码

    /// <summary>
    /// 权限管理模块接口契约
    /// </summary>
    [ServiceContract]
    [ServiceInterface]
    public interface IPowerManageWCFService
    {
 
        #region 用户管理
        [OperationContract]
        List<DTO_TB_USERS> GetUsers(ExpressionNode expressionNode);
 
        [OperationContract]
        DTO_TB_USERS AddUser(DTO_TB_USERS oUser);
 
        [OperationContract]
        bool DeleteUser(DTO_TB_USERS oUser);
 
        [OperationContract]
        bool DeleteUserByLamada(ExpressionNode expressionNode);
 
        [OperationContract]
        bool UpdateUser(DTO_TB_USERS oUser);
        #endregion
 
        #region 部门管理
        [OperationContract]
        List<DTO_TB_DEPARTMENT> GetDepartments(ExpressionNode expressionNode);
 
        [OperationContract]
        DTO_TB_DEPARTMENT AddDepartment(DTO_TB_DEPARTMENT oDept);
 
        [OperationContract]
        bool DeleteDepartment(DTO_TB_DEPARTMENT oDept);
 
        [OperationContract]
        bool DeleteDeptByLamada(ExpressionNode expressionNode);
 
        [OperationContract]
        bool UpdateDepartment(DTO_TB_DEPARTMENT oDept);
        #endregion
 
        #region 角色管理
        [OperationContract]
        List<DTO_TB_ROLE> GetRoles(ExpressionNode expressionNode);
 
        [OperationContract]
        DTO_TB_ROLE AddRole(DTO_TB_ROLE oRole);
        #endregion
 
        #region 菜单管理
        [OperationContract]
        List<DTO_TB_MENU> GetMenus(ExpressionNode expressionNode);
 
        [OperationContract]
        DTO_TB_MENU AddMenu(DTO_TB_MENU oMenu);
        #endregion
    }

1.2 WCF接口实现代码：

[ServiceClass]
    public class PowerManageWCFService :BaseService, IPowerManageWCFService
    {
        #region Fields
        [Import]
        private IUserRepository userRepository { get; set; }
 
        [Import]
        private IDepartmentRepository departmentRepository { get; set; }
 
        [Import]
        private IRoleRepository roleRepository { get; set; }
 
        [Import]
        private IMenuRepository menuRepository { get; set; }
        #endregion
 
        #region Constust
        public PowerManageWCFService()
        {
 
        }
        #endregion
 
        #region WCF服务接口实现
        #region 用户管理
        //这里参数为什么不直接用Expression<Func<DTO_TB_USERS,bool>>这种类型，是因为Expression不支持序列化，无法用于WCF数据的传递
        public List<DTO_TB_USERS> GetUsers(ExpressionNode expressionNode)
        {
            Expression<Func<DTO_TB_USERS, bool>> selector = null;
            if (expressionNode != null)
            {
                selector = expressionNode.ToExpression<Func<DTO_TB_USERS, bool>>();
            }
            var lstRes = base.GetDtoByLamada<DTO_TB_USERS, TB_USERS>(userRepository, selector);
            return lstRes;
        }
 
        public DTO_TB_USERS AddUser(DTO_TB_USERS oUser)
        {
            return base.AddDto<DTO_TB_USERS, TB_USERS>(userRepository, oUser);
        }
 
        public bool DeleteUser(DTO_TB_USERS oUser)
        {
            var bRes = false;
            try
            {
                base.DeleteDto<DTO_TB_USERS, TB_USERS>(userRepository, oUser);
                bRes = true;
            }
            catch
            { 
 
            }
            return bRes;
        }
 
        public bool DeleteUserByLamada(ExpressionNode expressionNode)
        {
            Expression<Func<DTO_TB_USERS, bool>> selector = null;
            if (expressionNode != null)
            {
                selector = expressionNode.ToExpression<Func<DTO_TB_USERS, bool>>();
            }
            var bRes = false;
            try
            {
                base.DeleteDto<DTO_TB_USERS, TB_USERS>(userRepository, selector);
                bRes = true;
            }
            catch
            {
 
            }
            return bRes;
        }
 
        public bool UpdateUser(DTO_TB_USERS oUser)
        {
            var bRes = false;
            try
            {
                base.UpdateDto<DTO_TB_USERS, TB_USERS>(userRepository, oUser);
                bRes = true;
            }
            catch
            {
 
            }
            return bRes;
        }
        #endregion
 
        #region 部门管理
        public List<DTO_TB_DEPARTMENT> GetDepartments(ExpressionNode expressionNode)
        {
            Expression<Func<DTO_TB_DEPARTMENT, bool>> selector = null;
            if (expressionNode != null)
            {
                selector = expressionNode.ToExpression<Func<DTO_TB_DEPARTMENT, bool>>();
            }
            return base.GetDtoByLamada<DTO_TB_DEPARTMENT, TB_DEPARTMENT>(departmentRepository, selector);
        }
        public DTO_TB_DEPARTMENT AddDepartment(DTO_TB_DEPARTMENT oDept)
        {
            return base.AddDto<DTO_TB_DEPARTMENT, TB_DEPARTMENT>(departmentRepository, oDept);
        }
 
        public bool DeleteDepartment(DTO_TB_DEPARTMENT oDept)
        {
            var bRes = false;
            try
            {
                base.DeleteDto<DTO_TB_DEPARTMENT, TB_DEPARTMENT>(departmentRepository, oDept);
                bRes = true;
            }
            catch
            { 
 
            }
            return bRes;
        }
 
        public bool DeleteDeptByLamada(ExpressionNode expressionNode)
        {
            Expression<Func<DTO_TB_DEPARTMENT, bool>> selector = null;
            if (expressionNode != null)
            {
                selector = expressionNode.ToExpression<Func<DTO_TB_DEPARTMENT, bool>>();
            }
            var bRes = false;
            try
            {
                base.DeleteDto<DTO_TB_DEPARTMENT, TB_DEPARTMENT>(departmentRepository, selector);
                bRes = true;
            }
            catch
            {
 
            }
            return bRes;
        }
 
        public bool UpdateDepartment(DTO_TB_DEPARTMENT oDept)
        {
            var bRes = false;
            try
            {
                base.UpdateDto<DTO_TB_DEPARTMENT, TB_DEPARTMENT>(departmentRepository, oDept);
                bRes = true;
            }
            catch
            { 
 
            }
            return bRes;
        }
        #endregion
 
        #region 角色管理
        public List<DTO_TB_ROLE> GetRoles(ExpressionNode expressionNode)
        {
            Expression<Func<DTO_TB_ROLE, bool>> selector = null;
            if (expressionNode != null)
            {
                selector = expressionNode.ToExpression<Func<DTO_TB_ROLE, bool>>();
            }
            return base.GetDtoByLamada<DTO_TB_ROLE, TB_ROLE>(roleRepository, selector);
        }
 
        public DTO_TB_ROLE AddRole(DTO_TB_ROLE oRole)
        {
            return base.AddDto<DTO_TB_ROLE, TB_ROLE>(roleRepository, oRole);
        }
        #endregion
 
        #region 菜单管理
        public List<DTO_TB_MENU> GetMenus(ExpressionNode expressionNode)
        {
            Expression<Func<DTO_TB_MENU, bool>> selector = null;
            if (expressionNode != null)
            {
                selector = expressionNode.ToExpression<Func<DTO_TB_MENU, bool>>();
            }
            return base.GetDtoByLamada<DTO_TB_MENU, TB_MENU>(menuRepository, selector);
        }
 
        public DTO_TB_MENU AddMenu(DTO_TB_MENU oMenu)
        {
            return base.AddDto<DTO_TB_MENU, TB_MENU>(menuRepository, oMenu);
        }
        #endregion
        #endregion
    }

PowerManageWCFService

这里要说明一点，在通过lamada表达式查询的方法里面为什么不直接用Expression<Func<DTO_TB_USERS,bool>>这种类型，而要使用ExpressionNode这种类型的变量呢？

这是因为Expression不支持序列化，无法用于WCF数据的传递。ExpressionNode这个对象的使用需要添加Serialize.Linq这个dll的引用，还好有我们神奇的NuGet，让我们再也不用去网上找一大堆的dll了。

我们公用的增删改查封装到了BaseService这个父类里面。

1.3 BaseService代码

public class BaseService
    {
        #region Fields
        private bool bInitAutoMapper = false;
        #endregion
 
        #region Construct
        public BaseService()
        {
            //注册MEF
            Regisgter.regisgter().ComposeParts(this);
        }
        #endregion
 
        #region 查询
        /// <summary>
        /// 通用单表查询方法
        /// </summary>
        /// <typeparam name="DtoModel">DTOmodel</typeparam>
        /// <typeparam name="DomainModel">领域模型</typeparam>
        /// <param name="oRepository">需要传过来的仓储接口对象</param>
        /// <param name="selector">前端传过来的lamada表达式</param>
        /// <returns></returns>
        public List<DtoModel> GetDtoByLamada<DtoModel, DomainModel>(IRepository<DomainModel> oRepository, Expression<Func<DtoModel, bool>> selector = null)
            where DomainModel : AggregateRoot
            where DtoModel : Dto_BaseModel
        {
            InitAutoMapper<DtoModel, DomainModel>();
            if (selector == null)
            {
                var lstDomainModel = oRepository.Entities.ToList();
                return Mapper.Map<List<DomainModel>, List<DtoModel>>(lstDomainModel);
            }
            //得到从Web传过来和DTOModel相关的lamaba表达式的委托
            Func<DtoModel, bool> match = selector.Compile();
            //创建映射Expression的委托
            Func<DomainModel, DtoModel> mapper = AutoMapper.QueryableExtensions.Extensions.CreateMapExpression<DomainModel, DtoModel>(Mapper.Engine).Compile();
            //得到领域Model相关的lamada
            Expression<Func<DomainModel, bool>> lamada = ef_t => match(mapper(ef_t));
            List<DomainModel> list = oRepository.Find(lamada).ToList();
            return Mapper.Map<List<DomainModel>, List<DtoModel>>(list);
        }
        #endregion
 
        #region 新增
        public DtoModel AddDto<DtoModel, DomainModel>(IRepository<DomainModel> oRepository, DtoModel oDtoModel)
            where DomainModel : AggregateRoot
            where DtoModel : Dto_BaseModel
        {
            InitAutoMapper<DtoModel, DomainModel>();
            var oDomain = Mapper.Map<DtoModel, DomainModel>(oDtoModel);
            oRepository.Insert(oDomain);
            return Mapper.Map<DomainModel, DtoModel>(oDomain);
        }
        #endregion
 
        #region 删除
        public int DeleteDto<DtoModel, DomainModel>(IRepository<DomainModel> oRepository, DtoModel oDtoModel)
            where DomainModel : AggregateRoot
            where DtoModel : Dto_BaseModel
        {
            InitAutoMapper<DtoModel, DomainModel>();
            var oDomain = Mapper.Map<DtoModel, DomainModel>(oDtoModel);
            return oRepository.Delete(oDomain);
        }
 
        public int DeleteDto<DtoModel, DomainModel>(IRepository<DomainModel> oRepository, Expression<Func<DtoModel, bool>> selector = null)
            where DomainModel : AggregateRoot
            where DtoModel : Dto_BaseModel
        {
            InitAutoMapper<DtoModel, DomainModel>();
            if (selector == null)
            {
                return ;
            }
            //得到从Web传过来和DTOModel相关的lamaba表达式的委托
            Func<DtoModel, bool> match = selector.Compile();
            //创建映射Expression的委托
            Func<DomainModel, DtoModel> mapper = AutoMapper.QueryableExtensions.Extensions.CreateMapExpression<DomainModel, DtoModel>(Mapper.Engine).Compile();
            //得到领域Model相关的lamada
            Expression<Func<DomainModel, bool>> lamada = ef_t => match(mapper(ef_t));
            return oRepository.Delete(lamada);
        }
        #endregion
 
        #region 更新
        public void UpdateDto<DtoModel, DomainModel>(IRepository<DomainModel> oRepository, DtoModel oDtoModel)
            where DomainModel : AggregateRoot
            where DtoModel : Dto_BaseModel
        {
            InitAutoMapper<DtoModel, DomainModel>();
            var oDomain = Mapper.Map<DtoModel, DomainModel>(oDtoModel);
            oRepository.Update(oDomain);
        }
        #endregion
 
        #region Private
        private void InitAutoMapper<DtoModel, DomainModel>()
        {
            var oType = Mapper.FindTypeMapFor<DtoModel, DomainModel>();
            if (oType==null)
            {
                Mapper.CreateMap<DtoModel, DomainModel>();
                Mapper.CreateMap<DomainModel, DtoModel>();
            }
        }
        #endregion
    }

BaseService

这个父类主要做了两件事：一是MEF的初始化；二是通用增删改查的实现。所有dto对象和领域model的映射都在这里统一管理。

2、UI层代码

UI层里面，为了更好分离代码，我们引入了接口编程的机制，引入了ESTM.Web.IBLL和ESTM.Web.BLL两个项目，如图：

为什么要有这么一个接口层？之前C#进阶系列——MEF实现设计上的“松耦合”（终结篇：面向接口编程）这篇已经做过介绍，对面向接口编程不了解的朋友可以看看。

2.1 ESTM.Web.IBLL代码

这个dll主要定义接口规则。

 public interface IPowerManager
    {
        List<DTO_TB_USERS> GetUsers(Expression<Func<DTO_TB_USERS, bool>> selector = null);
 
        DTO_TB_USERS AddUser(DTO_TB_USERS oUser);
 
        bool DeleteUser(DTO_TB_USERS oUser);
 
        bool UpdateUser(DTO_TB_USERS oUser);
 
        bool DeleteUser(Expression<Func<DTO_TB_USERS, bool>> selector = null);
 
        List<DTO_TB_DEPARTMENT> GetDepartments(Expression<Func<DTO_TB_DEPARTMENT, bool>> selector = null);
 
        DTO_TB_DEPARTMENT AddDepartment(DTO_TB_DEPARTMENT oDept);
 
        bool DeleteDepartment(DTO_TB_DEPARTMENT oDept);
 
        bool DeleteDepartment(Expression<Func<DTO_TB_DEPARTMENT, bool>> selector = null);
 
        bool UpdateDepartment(DTO_TB_DEPARTMENT oDept);
 
        List<DTO_TB_ROLE> GetRoles(Expression<Func<DTO_TB_ROLE, bool>> selector = null);
 
        List<DTO_TB_MENU> GetMenus(Expression<Func<DTO_TB_MENU, bool>> selector = null);
 
    }

2.2 ESTM.Web.BLL代码

这个dll用于实现ESTM.Web.IBLL里面的接口方法

[Export(typeof(IPowerManager))]
    public class PowerManager : IPowerManager
    {
        #region Fields
　　　　 //创建WCF服务连接对象
        private ServiceReference_PowerManager.PowerManageWCFServiceClient oService = CreatePowerManagerService.GetInstance();
        #endregion
 
        #region 接口实现
        public List<DTO_TB_USERS> GetUsers(Expression<Func<Common.DtoModel.DTO_TB_USERS, bool>> selector = null)
        {
            return oService.GetUsers(GetExpressionNode<DTO_TB_USERS>(selector));
        }
 
        public List<Common.DtoModel.DTO_TB_DEPARTMENT> GetDepartments(Expression<Func<Common.DtoModel.DTO_TB_DEPARTMENT, bool>> selector = null)
        {
            return oService.GetDepartments(GetExpressionNode<DTO_TB_DEPARTMENT>(selector));
        }
 
        public List<Common.DtoModel.DTO_TB_ROLE> GetRoles(Expression<Func<Common.DtoModel.DTO_TB_ROLE, bool>> selector = null)
        {
            return oService.GetRoles(GetExpressionNode<DTO_TB_ROLE>(selector));
        }
 
        public List<Common.DtoModel.DTO_TB_MENU> GetMenus(Expression<Func<Common.DtoModel.DTO_TB_MENU, bool>> selector = null)
        {
            return oService.GetMenus(GetExpressionNode<DTO_TB_MENU>(selector));
        }
        #endregion
 
        #region Privates
        //将lamada表达式转换为可用于WCF传递的ExpressionNode类型
        private ExpressionNode GetExpressionNode<Dto>(Expression<Func<Dto,bool>> selector)
        {
            if (selector == null)
            {
                return null;
            }
            ExpressionConverter expressionConverter = new ExpressionConverter();
            ExpressionNode expressionNode = expressionConverter.Convert(selector);
            return expressionNode;
        }
        #endregion
 
        public DTO_TB_USERS AddUser(DTO_TB_USERS oUser)
        {
            return oService.AddUser(oUser);
        }
 
        public bool DeleteUser(DTO_TB_USERS oUser)
        {
            return oService.DeleteUser(oUser);
        }
 
        public bool DeleteUser(Expression<Func<DTO_TB_USERS, bool>> selector = null)
        {
            if (selector == null)
            {
                return false;
            }
            ExpressionConverter expressionConverter = new ExpressionConverter();
            ExpressionNode expressionNode = expressionConverter.Convert(selector);
            return oService.DeleteUserByLamada(expressionNode);
        }
 
        public bool UpdateUser(DTO_TB_USERS oUser)
        {
            return oService.UpdateUser(oUser);
        }
 
        public DTO_TB_DEPARTMENT AddDepartment(DTO_TB_DEPARTMENT oDept)
        {
            return oService.AddDepartment(oDept);
        }
 
        public bool DeleteDepartment(DTO_TB_DEPARTMENT oDept)
        {
            return oService.DeleteDepartment(oDept);
        }
 
        public bool UpdateDepartment(DTO_TB_DEPARTMENT oDept)
        {
            return oService.UpdateDepartment(oDept);
        }
 
        public bool DeleteDepartment(Expression<Func<DTO_TB_DEPARTMENT, bool>> selector = null)
        {
            if (selector == null)
            {
                return false;
            }
            ExpressionConverter expressionConverter = new ExpressionConverter();
            ExpressionNode expressionNode = expressionConverter.Convert(selector);
            return oService.DeleteDeptByLamada(expressionNode);
        }
    }

PowerManager : IPowerManager

　　public class CreatePowerManagerService
    {
        private static ServiceReference_PowerManager.PowerManageWCFServiceClient oPowerManagerClient = null;
        private static object obj = new object();
 
        public static ServiceReference_PowerManager.PowerManageWCFServiceClient GetInstance()
        {
            lock (obj)
            {
                if (oPowerManagerClient == null)
                {
                    oPowerManagerClient = new ServiceReference_PowerManager.PowerManageWCFServiceClient();
                }
            }
            return oPowerManagerClient;
        }
    }

由于是采用的添加服务引用的方式引用的WCF服务，所以在这一层需要添加WCF服务的引用。在实现这部分代码的时候博主遇到过一个问题，在此和朋友们分享一下。由于在WCF服务的设计里面用到了DTO对象，而在ESTM.Web.BLL这个项目里面也要用到DTO，但是添加WCF服务引用的时候默认的是WCF服务里面的DTO，而不是ESTM.Common.DtoModel这个项目的DTO对象，这样就有问题了，每次如果我们需要改动下dto的内容，那么我们就需要更新下服务引用。还好，微软给我们选择的机制，我们来看图

这样就能解决上面的问题了。

2.3 ESTM.Web代码

按照面向接口的机制，ESTM.Web项目是不需要添加ESTM.Web.BLL这个实现层项目引用的，通过MEF动态导入ESTM.Web.BLL里面的对象。我们来看代码：

public class PowerManagerController : BaseController
    {
        [Import]
        private IPowerManager PowerManager { set; get; }
 
        #region Views
        // GET: PowerManager
        public ActionResult User()
        {
            return View();
        }
 
        public ActionResult Role()
        {
            return View();
        }
 
        public ActionResult Menu()
        {
            return View();
        }
 
        public ActionResult Department()
        {
            return View();
        }
        #endregion
 
        #region 部门管理
        public JsonResult GetDepartments(int limit, int offset, string departmentname, string statu)
        {
            //得到lamada表达式
            var oLamadaExtention = new LamadaExtention<DTO_TB_DEPARTMENT>();
            if (!string.IsNullOrEmpty(departmentname))
            {
                oLamadaExtention.GetExpression("DEPARTMENT_NAME", departmentname, ExpressionType.Contains);
            }
            if (!string.IsNullOrEmpty(statu))
            {
                oLamadaExtention.GetExpression("STATUS", statu, ExpressionType.Contains);
            }
            var lamada = oLamadaExtention.GetLambda();
            var lstRes = PowerManager.GetDepartments(lamada);
 
            return Json(new { rows = lstRes.Skip(offset).Take(limit).ToList(), total = lstRes.Count }, JsonRequestBehavior.AllowGet);
        }
 
        public object GetDepartmentEdit(string strPostData)
        {
            var oDepartment = Newtonsoft.Json.JsonConvert.DeserializeObject<DTO_TB_DEPARTMENT>(strPostData);
            if (string.IsNullOrEmpty(oDepartment.DEPARTMENT_ID))
            {
                oDepartment.DEPARTMENT_ID = Guid.NewGuid().ToString();
                oDepartment = PowerManager.AddDepartment(oDepartment);
            }
            else
            {
                PowerManager.UpdateDepartment(oDepartment);
            }
            return oDepartment;
        }
 
        public object DeleteDept(string strID)
        {
            PowerManager.DeleteDepartment(x=>x.DEPARTMENT_ID == strID);
            return new object();
        }
        #endregion
 
        #region 菜单管理
        public JsonResult GetMenus(int limit, int offset, string menuname, string menuurl)
        {
            var oLamadaExtention = new LamadaExtention<DTO_TB_MENU>();
            if (!string.IsNullOrEmpty(menuname))
            {
                oLamadaExtention.GetExpression("MENU_NAME", menuname, ExpressionType.Contains);
            }
            if (!string.IsNullOrEmpty(menuurl))
            {
                oLamadaExtention.GetExpression("MENU_URL", menuurl, ExpressionType.Contains);
            }
            var lamada = oLamadaExtention.GetLambda();
            var lstRes = PowerManager.GetMenus(lamada).ToList();
 
            return Json(new { rows = lstRes.Skip(offset).Take(limit).ToList(), total = lstRes.Count }, JsonRequestBehavior.AllowGet);
        }
 
        public object GetMenuEdit(string strPostData)
        {
            var oMenu = Newtonsoft.Json.JsonConvert.DeserializeObject<DTO_TB_MENU>(strPostData);
            if (string.IsNullOrEmpty(oMenu.MENU_ID))
            {
                //oMenu = MenuManager.Add(oMenu);
            }
            else
            {
                //MenuManager.Update(oMenu);
            }
            return oMenu;
        }
 
        public object DeleteMenu(string strID)
        {
            //MenuManager.Delete(strID);
            return new object();
        }
 
        public object GetParentMenu()
        {
            var lstMenu = PowerManager.GetMenus(x => x.MENU_LEVEL == "");
 
            //var lstRes = RoleManager.Find().ToList();
            //var oRes = new PageRowData();
            //oRes.rows = lstRes.Skip(offset).Take(limit).ToList();
            //oRes.total = lstRes.Count;
            return lstMenu; ;
        }
 
        public object GetChildrenMenu(string strParentID)
        {
            var lstMenu = PowerManager.GetMenus(x => x.MENU_LEVEL == "" && x.PARENT_ID == strParentID).ToList();
 
            //var lstRes = RoleManager.Find().ToList();
            //var oRes = new PageRowData();
            //oRes.rows = lstRes.Skip(offset).Take(limit).ToList();
            //oRes.total = lstRes.Count;
            return lstMenu; ;
        }
        #endregion
 
        #region 权限管理
 
        public JsonResult GetRole(int limit, int offset, string rolename, string desc)
        {
            var oLamadaExtention = new LamadaExtention<DTO_TB_ROLE>();
            if (!string.IsNullOrEmpty(rolename))
            {
                oLamadaExtention.GetExpression("ROLE_NAME", rolename, ExpressionType.Contains);
            }
            if (!string.IsNullOrEmpty(desc))
            {
                oLamadaExtention.GetExpression("DESCRIPTION", desc, ExpressionType.Contains);
            }
            var lamada = oLamadaExtention.GetLambda();
            var lstRes = PowerManager.GetRoles(lamada).ToList();
 
            return Json(new { rows = lstRes.Skip(offset).Take(limit).ToList(), total = lstRes.Count }, JsonRequestBehavior.AllowGet);
        }
 
        #endregion
 
        #region 用户管理
        public JsonResult GetUsers(int limit, int offset, string username, string fullname)
        {
            var oLamadaExtention = new LamadaExtention<DTO_TB_USERS>();
            if (!string.IsNullOrEmpty(username))
            {
                oLamadaExtention.GetExpression("USER_NAME", username, ExpressionType.Contains);
            }
            if (!string.IsNullOrEmpty(fullname))
            {
                oLamadaExtention.GetExpression("FULLNAME", fullname, ExpressionType.Contains);
            }
            var lamada = oLamadaExtention.GetLambda();
 
            var lstRes = PowerManager.GetUsers(lamada).ToList();
 
            return Json(new { rows = lstRes.Skip(offset).Take(limit).ToList(), total = lstRes.Count }, JsonRequestBehavior.AllowGet);
        }
 
        public object GetUserEdit(string strPostData)
        {
            var oUser = Newtonsoft.Json.JsonConvert.DeserializeObject<DTO_TB_USERS>(strPostData);
            if (string.IsNullOrEmpty(oUser.USER_ID))
            {
                oUser.USER_ID = Guid.NewGuid().ToString();
                oUser = PowerManager.AddUser(oUser);
            }
            else
            {
                PowerManager.UpdateUser(oUser);
            }
            return oUser;
        }
 
        public object DeleteUser(string strID)
        {
            PowerManager.DeleteUser(x => x.USER_ID == strID);
            return new object();
        }
        #endregion
    }

PowerManagerController

View页面

<!DOCTYPE html>
 
<html>
<head>
    <meta name="viewport" content="width=device-width" />
    <title>@ViewBag.Title</title>
    @Styles.Render("~/Content/css")
    @Styles.Render("~/Content/table-css")
    @Scripts.Render("~/bundles/jquery")
    @Scripts.Render("~/bundles/bootstrap")
    @Scripts.Render("~/bundles/bootstrap-table")
    @RenderSection("Scripts", false)
</head>
<body>
    @RenderBody()
</body>
</html>

_Layout.cshtml

@{
    ViewBag.Title = "部门管理";
    Layout = "~/Views/Shared/_Layout.cshtml";
}
 
@Scripts.Render("~/bundles/PowerManage/DepartmentManage")
 
<div class="panel-body" style="padding-bottom:0px;">
    <div class="panel panel-default">
        <div class="panel-heading">查询条件</div>
        <div class="panel-body">
            <div class="row">
                <div class="col-md-4">
                    <label for="txt_search_departmentname" class="col-sm-4 control-label" style="margin-top:6px;">部门名称</label>
                    <span class="col-sm-8">
                        <input type="text" class="form-control" id="txt_search_departmentname">
                    </span>
                </div>
                <div class="col-md-4">
                    <label for="txt_search_statu" class="col-sm-3 control-label" style="margin-top:6px;">状态</label>
                    <span class="col-sm-8">
                        <input type="text" class="form-control" id="txt_search_statu">
                    </span>
                </div>
 
                <div class="col-md-4">
                    <button type="button" id="btn_query" class="btn btn-primary">查询</button>
                </div>
            </div>
 
        </div>
    </div>
</div>
 
<div id="toolbar" class="btn-group">
    <button id="btn_add" type="button" class="btn btn-default">
        <span class="glyphicon glyphicon-plus" aria-hidden="true"></span>新增
    </button>
    <button id="btn_edit" type="button" class="btn btn-default">
        <span class="glyphicon glyphicon-pencil" aria-hidden="true"></span>修改
    </button>
    <button id="btn_delete" type="button" class="btn btn-default">
        <span class="glyphicon glyphicon-remove" aria-hidden="true"></span>删除
    </button>
</div>
<table id="tb_departments"></table>
 
<form>
    <div class="modal fade" id="myModal" tabindex="-1" role="dialog" aria-labelledby="myModalLabel">
        <div class="modal-dialog" role="document">
            <div class="modal-content">
                <div class="modal-header">
                    <button type="button" class="close" data-dismiss="modal" aria-label="Close"><span aria-hidden="true">&times;</span></button>
                    <h4 class="modal-title" id="myModalLabel">新增</h4>
                </div>
                <div class="modal-body">
 
                    <div class="form-group">
                        <label for="txt_departmentname">部门名称</label>
                        <input type="text" name="txt_departmentname" class="form-control" id="txt_departmentname" placeholder="部门名称">
                    </div>
                    <div class="form-group">
                        <label for="txt_parentdepartment">上级部门</label>
                        <input type="text" name="txt_parentdepartment" class="form-control" id="txt_parentdepartment" placeholder="上级部门">
                    </div>
                    <div class="form-group">
                        <label for="txt_departmentlevel">部门级别</label>
                        <input type="text" name="txt_departmentlevel" class="form-control" id="txt_departmentlevel" placeholder="部门级别">
                    </div>
                    <div class="form-group">
                        <label for="txt_statu">状态</label>
                        <input type="text" name="txt_statu" class="form-control" id="txt_statu" placeholder="状态">
                    </div>
                </div>
                <div class="modal-footer">
                    <button type="button" class="btn btn-default" data-dismiss="modal"><span class="glyphicon glyphicon-remove" aria-hidden="true"></span>关闭</button>
                    <button type="button" id="btn_submit" class="btn btn-primary" data-dismiss="modal"><span class="glyphicon glyphicon-floppy-disk" aria-hidden="true"></span>保存</button>
                </div>
            </div>
        </div>
    </div>
</form>

Department.cshtml

JS代码我们来看一个页面就好了，其他页面类似：

$(function () {
    $('#tb_departments').bootstrapTable({
        url: '/PowerManager/GetDepartments',
        method: 'post',
        toolbar: '#toolbar',
        pagination: true,
        queryParams: queryParams,
        queryParamsType: "limit",
        //ajaxOptions: { departmentname: "", statu: "" },
        sidePagination: "server",
        pageSize: 5,
        pageList: [5, 25, 50, 100],
        search: true,
        strictSearch: true,
        showColumns: true,
        showRefresh: true,
        minimumCountColumns: 2,
        clickToSelect: true,
        columns: [{
            checkbox: true
        }, {
            field: 'DEPARTMENT_NAME',
            title: '部门名称'
        }, {
            field: 'PARENT_ID',
            title: '上级部门'
        }, {
            field: 'DEPARTMENT_LEVEL',
            title: '部门级别'
        }, {
            field: 'STATUS',
            title: '状态'
        }, ],
        onLoadSuccess: function (data) {
            var odata = data;
        }
    });
 
    var oButtonInit = new ButtonInit();
    oButtonInit.Init();
 
});
 
function queryParams(params) {  //配置参数
    var temp = {   //这里的键的名字和控制器的变量名必须一直，这边改动，控制器也需要改成一样的
        limit: params.limit,   //页面大小
        offset: params.offset,  //页码
        departmentname: $("#txt_search_departmentname").val(),
        statu: $("#txt_search_statu").val()
    };
    return temp;
}
 
var ButtonInit = function () {
    var oInit = new Object();
    var postdata = {};
 
    oInit.Init = function () {
        $("#btn_add").click(function () {
            $("#myModalLabel").text("新增");
            $("#myModal").find(".form-control").val("");
            $('#myModal').modal()
 
            postdata.DEPARTMENT_ID = "";
        });
 
        $("#btn_edit").click(function () {
            var arrselections = $("#tb_departments").bootstrapTable('getSelections');
            if (arrselections.length > 1) {
                //alert("只能选择一行进行编辑");
                $("#btn_alert").alert();
                return;
            }
            if (arrselections.length <= 0) {
                //alert("请先选择需要编辑的行");
                $("#btn_alert").alert()
                return;
            }
            $("#myModalLabel").text("编辑");
            $("#txt_departmentname").val(arrselections[0].DEPARTMENT_NAME);
            $("#txt_parentdepartment").val(arrselections[0].PARENT_ID);
            $("#txt_departmentlevel").val(arrselections[0].DEPARTMENT_LEVEL);
            $("#txt_statu").val(arrselections[0].STATUS);
 
            postdata.DEPARTMENT_ID = arrselections[0].DEPARTMENT_ID;
            $('#myModal').modal();
        });
 
        $("#btn_delete").click(function () {
            var arrselections = $("#tb_departments").bootstrapTable('getSelections');
            if (arrselections.length <= 0) {
                //alert("请先选择需要编辑的行");
                $("#btn_alert").alert()
                return;
            }
 
            if (!confirm("确定要删除选定的数据吗？")) {
                return;
            }
 
            $.ajax({
                type: "post",
                url: "/PowerManager/DeleteDept",
                data: { strID: arrselections[0].DEPARTMENT_ID },
                success: function (data, status) {
                    if (status == "success") {
                        alert("提交数据成功");
                        $("#tb_departments").bootstrapTable('refresh');
                    }
                },
                error: function () {
                    alert("error");
                },
                complete: function () {
                    //alert("complete");
                }
 
            });
        });
 
        $("#btn_submit").click(function () {
            postdata.DEPARTMENT_NAME = $("#txt_departmentname").val();
            postdata.PARENT_ID = $("#txt_parentdepartment").val();
            postdata.DEPARTMENT_LEVEL = $("#txt_departmentlevel").val();
            postdata.STATUS = $("#txt_statu").val();
            $.ajax({
                type: "post",
                url: "/PowerManager/GetDepartmentEdit",
                data: { strPostData: JSON.stringify(postdata) },
                success: function (data, status) {
                    if (status == "success") {
                        alert("提交数据成功");
                        $("#tb_departments").bootstrapTable('refresh');
                    }
                },
                error: function () {
                    //alert("error");
                },
                complete: function () {
                    //alert("complete");
                }
 
            });
        });
 
        $("#btn_query").click(function () {
            $("#tb_departments").bootstrapTable('refresh');
        });
    };
 
    return oInit;
};

DepartmentManage.js

效果图：

在做页面数据更新的时候，博主又遇到一个问题：ObjectStateManager 中已存在具有同一键的对象。ObjectStateManager 无法跟踪具有相同键的多个对象。在此还是记录下解决方案：

在仓储的公共实现类中将

　　　　 public virtual IQueryable<TEntity> Entities

        {

            get { return UnitOfWork.context.Set<TEntity>(); }

        }

改成

public virtual IQueryable<TEntity> Entities

        {

            get { return UnitOfWork.context.Set<TEntity>().AsNoTracking() as IQueryable<TEntity>; }

        }

就可以了。

至此，从领域模型到Web前端的代码基本完成，可能很多代码并未完善，比如异常处理、数据验证等。之前写过一篇CS版本的权限系统系统设计——权限系统，很多朋友找我要过源码，那个时候可能代码都在工作的项目中，没办法抽离出来，在此表示抱歉。现在做了一个BS的，感觉BS比CS界面好看，在这里将源码分享出来，当然这里的代码肯定也不太全，很多没实现的功能还需要自己去实现，但是基本的架子搭起来了，有兴趣可以看看。源码下载