[外包]!采用asp.net core 快速构建小型创业公司后台管理系统(一.项目简介)

今天给大家分享一下采用asp.net core 快速构建小型创业公司后台管理系统，该项目是我给一个朋友做的，将要用到公司项目，今天分享出来权限管理模块喜欢的朋友可以试用用一下。

项目不是一个什么新项目，也没有用到什么牛逼的东西，但里面融入了我用asp.net core构建管理系统的思考，可以说是思想的结合体。

该项目的权限模块我已经放到了Liinu上，项目预览地址：http://xingchenbeta.52expo.top/Welcome 账户：admin 密码：123456

接下来再说一下该项目基本点：

• 项目采用Asp.Net Core2.1+EF Core构建后台服务
• 项目前端使用BootStrap+Angular1.x构建管理系统前端
• 数据库采用MySql 5.7.24
• 部署环境在CentOS 7.4上
• 项目中用到Redis
• 用到Quartz

接下来在上一张项目图片：

项目基本完成功能点有：

• 角色管理（curd）
• 角色授权
• 后台用户管理（crud）
• 代码动态生成权限

废话就说这么多吧，接下来我就从头开始介绍这个项目。

 一.项目基本组成介绍

项目成员就这么多，大家看着名字可能很眼熟，其实我只接用了DDD的名字而已。

除去单元测试，项目分为五部分：API,WebSite,Domain,Infrastuctrue,Applicaiton

Api 主要用来给我们的移动端兄弟们提供api支持

Website里面呢就是我们的后台管理系统

Domain里面我放的是数据库实体模型，识图模型，枚举类，服务接口约束，以及必要的核心东西

Infrastructure里面我放着部分Domain接口的实现，数据库上下文，三方，工具类，一些拓展方法，等基础构造

Application里面放着Domain接口的实现，这里我主要放自己需要写的服务，也可以称之为业务逻辑

二.抽丝剥茧，看看具体怎么实现

1，设计好数据库（我们还是采用db frist的思想，因为我觉得code frist开发的有点慢，并不是说code frist不好！），在Domain项目引入支持mysql的nuget包

<PackageReference Include="Pomelo.EntityFrameworkCore.MySql" Version="2.1.2" />

　　生成实体类

## dbfrist 数据库迁移命令

Scaffold-DbContext "Server=host;Database=RestApi;User=root;Password=xx.;" "Pomelo.EntityFrameworkCore.MySql" -Force -OutputDir Entitys

　　如图

　　

　　把context从实体中拉出来，放到infrastructure里，在Infrastructure里创建context文件夹

　　

2. 在Domain 创建Repositorys文件夹

　　

　　IDbRepository封装装ef数据仓储接口

　　

/// <summary>
    /// 封装装ef数据仓储接口
    /// </summary>
    public interface IDbRepository<TContext> where TContext:dbcontext
    {
        /// <summary>
        /// get <see cref="!:TSource" /> from raw sql query
        /// the TSource must in database or <see cref="T:Microsoft.EntityFrameworkCore.DbContext" />
        /// </summary>
        /// <typeparam name="TSource"></typeparam>
        /// <param name="sql"></param>
        /// <param name="parameters"></param>
        /// <returns></returns>
        IQueryable<TSource> FromSql<TSource>(string sql, params object[] parameters) where TSource : class;

        /// <summary>get single or default TSource</summary>
        /// <typeparam name="TSource">entity</typeparam>
        /// <param name="predicate"></param>
        /// <returns></returns>
        TSource Single<TSource>(Expression<Func<TSource, bool>> predicate = null) where TSource : class;

        /// <summary>get first or default TSource</summary>
        /// <typeparam name="TSource"></typeparam>
        /// <param name="predicate"></param>
        /// <returns></returns>
        TSource First<TSource>(Expression<Func<TSource, bool>> predicate = null) where TSource : class;

        /// <summary>select entity by conditions</summary>
        /// <typeparam name="TSource"></typeparam>
        /// <param name="predicate"></param>
        /// <returns></returns>
        IQueryable<TSource> Where<TSource>(Expression<Func<TSource, bool>> predicate = null) where TSource : class;

        /// <summary>counting the entity's count under this condition</summary>
        /// <typeparam name="TSource"></typeparam>
        /// <param name="predicate"></param>
        /// <returns></returns>
        int Count<TSource>(Expression<Func<TSource, bool>> predicate = null) where TSource : class;

        /// <summary>return the query</summary>
        /// <typeparam name="TSource"></typeparam>
        /// <returns></returns>
        IQueryable<TSource> Query<TSource>() where TSource : class;

        /// <summary>check the condition</summary>
        /// <typeparam name="TSource"></typeparam>
        /// <param name="predicate"></param>
        /// <returns></returns>
        bool Exists<TSource>(Expression<Func<TSource, bool>> predicate = null) where TSource : class;

        /// <summary>paging the query</summary>
        /// <typeparam name="T"></typeparam>
        /// <param name="query"></param>
        /// <param name="pageIndex">page index</param>
        /// <param name="pageSize">page size </param>
        /// <param name="count">total row record count</param>
        /// <returns></returns>
        IQueryable<T> Pages<T>(IQueryable<T> query, int pageIndex, int pageSize, out int count) where T : class;

        /// <summary>paging the query</summary>
        /// <typeparam name="T"></typeparam>
        /// <param name="pageIndex">page index</param>
        /// <param name="pageSize">page size </param>
        /// <param name="count">total row record count</param>
        /// <returns></returns>
        IQueryable<T> Pages<T>(int pageIndex, int pageSize, out int count) where T : class;

        /// <summary>
        /// 分页
        /// </summary>
        /// <typeparam name="T"></typeparam>
        /// <param name="query"></param>
        /// <param name="pageIndex"></param>
        /// <param name="pageSize"></param>
        /// <param name="count">总条数</param>
        /// <param name="pageCount">页数</param>
        /// <returns></returns>
        IQueryable<T> Pages<T>(IQueryable<T> query, int pageIndex, int pageSize, out int count, out int pageCount) where T : class;
        /// <summary>save all the changes add, update, delete</summary>
        void Save();

        /// <summary>add entity to context or database</summary>
        /// <param name="entity"></param>
        /// <param name="save">save the add and all changes before this to database</param>
        void Add(object entity, bool save = false);

        /// <summary>update entity to context or database</summary>
        /// <param name="entity"></param>
        /// <param name="save">save the update and all changes before this to database</param>
        void Update(object entity, bool save = false);

        /// <summary>update entitys to context or database</summary>
        /// <param name="list"></param>
        /// <param name="save">save the updates and all changes before this to database</param>
        void Update(IEnumerable<object> list, bool save = false);

        /// <summary>delete entity from context or database</summary>
        /// <param name="entity"></param>
        /// <param name="save">save the delete and all changes before this to database</param>
        void Delete(object entity, bool save = false);

        /// <summary>delete entitys from context or database</summary>
        /// <param name="list"></param>
        /// <param name="save">save the deletes and all changes before this to database</param>
        void Delete(IEnumerable<object> list, bool save = false);
    }

　　在Infrastructure里创建Repositorys,DbRepository类实现了IDbRepository,封装泛型仓储 依赖接口 DbContext约束

　　

　　

/// <summary>
    /// 封装泛型仓储 依赖接口 DbContext约束
    /// </summary>
    /// <typeparam name="TContext"></typeparam>
    public class DbRepository<TContext> : IDbRepository where TContext : DbContext
    {
        private TContext _context;

        protected virtual TContext DataContext
        {
            get
            {
                if ((object)this._context == null)
                    this._context = ServiceCollectionExtension.New<TContext>();
                return this._context;
            }
        }

        /// <summary>
        /// get <see cref="!:TSource" /> from raw sql query
        /// the TSource must in database or <see cref="T:Microsoft.EntityFrameworkCore.DbContext" />
        /// </summary>
        /// <typeparam name="TSource"></typeparam>
        /// <param name="sql"></param>
        /// <param name="parameters"></param>
        /// <returns></returns>
        public IQueryable<TSource> FromSql<TSource>(string sql, params object[] parameters) where TSource : class
        {
            return this.DataContext.Set<TSource>().FromSql<TSource>((RawSqlString)sql, parameters);
        }

        /// <summary>get single or default TSource</summary>
        /// <typeparam name="TSource">entity</typeparam>
        /// <param name="predicate"></param>
        /// <returns></returns>
        public TSource Single<TSource>(Expression<Func<TSource, bool>> predicate = null) where TSource : class
        {
            if (predicate == null)
                return this.DataContext.Set<TSource>().SingleOrDefault<TSource>();
            return this.DataContext.Set<TSource>().SingleOrDefault<TSource>(predicate);
        }

        /// <summary>get first or default TSource</summary>
        /// <typeparam name="TSource"></typeparam>
        /// <param name="predicate"></param>
        /// <returns></returns>
        public TSource First<TSource>(Expression<Func<TSource, bool>> predicate = null) where TSource : class
        {
            if (predicate == null)
                return this.DataContext.Set<TSource>().FirstOrDefault<TSource>();
            return this.DataContext.Set<TSource>().FirstOrDefault<TSource>(predicate);
        }

        /// <summary>select entity by conditions</summary>
        /// <typeparam name="TSource"></typeparam>
        /// <param name="predicate"></param>
        /// <returns></returns>
        public IQueryable<TSource> Where<TSource>(Expression<Func<TSource, bool>> predicate = null) where TSource : class
        {
            if (predicate == null)
                return this.DataContext.Set<TSource>().AsQueryable<TSource>();
            return this.DataContext.Set<TSource>().Where<TSource>(predicate);
        }

        /// <summary>counting the entity's count under this condition</summary>
        /// <typeparam name="TSource"></typeparam>
        /// <param name="predicate"></param>
        /// <returns></returns>
        public int Count<TSource>(Expression<Func<TSource, bool>> predicate = null) where TSource : class
        {
            if (predicate == null)
                return this.DataContext.Set<TSource>().Count<TSource>();
            return this.DataContext.Set<TSource>().Count<TSource>(predicate);
        }

        /// <summary>return the query</summary>
        /// <typeparam name="TSource"></typeparam>
        /// <returns></returns>
        public IQueryable<TSource> Query<TSource>() where TSource : class
        {
            return (IQueryable<TSource>)this.DataContext.Set<TSource>();
        }

        /// <summary>check the condition</summary>
        /// <typeparam name="TSource"></typeparam>
        /// <param name="predicate"></param>
        /// <returns></returns>
        public bool Exists<TSource>(Expression<Func<TSource, bool>> predicate = null) where TSource : class
        {
            if (predicate == null)
                return this.DataContext.Set<TSource>().Any<TSource>();
            return this.DataContext.Set<TSource>().Any<TSource>(predicate);
        }

        /// <summary>paging the query</summary>
        /// <typeparam name="T"></typeparam>
        /// <param name="query"></param>
        /// <param name="pageIndex">page index</param>
        /// <param name="pageSize">page size </param>
        /// <param name="count">total row record count</param>
        /// <returns></returns>
        public IQueryable<T> Pages<T>(IQueryable<T> query, int pageIndex, int pageSize, out int count) where T : class
        {
            if (pageIndex < 1)
                pageIndex = 1;
            if (pageSize < 1)
                pageSize = 10;
            count = query.Count<T>();
            query = query.Skip<T>((pageIndex - 1) * pageSize).Take<T>(pageSize);
            return query;
        }

        /// <summary>paging the query</summary>
        /// <typeparam name="T"></typeparam>
        /// <param name="pageIndex">page index</param>
        /// <param name="pageSize">page size </param>
        /// <param name="count">total row record count</param>
        /// <returns></returns>
        public IQueryable<T> Pages<T>(int pageIndex, int pageSize, out int count) where T : class
        {
            if (pageIndex < 1)
                pageIndex = 1;
            if (pageSize < 1)
                pageSize = 10;
            var source = this.DataContext.Set<T>().AsQueryable<T>();
            count = source.Count<T>();
            return source.Skip<T>((pageIndex - 1) * pageSize).Take<T>(pageSize);
        }
        /// <summary>
        /// 分页
        /// </summary>
        /// <typeparam name="T"></typeparam>
        /// <param name="query"></param>
        /// <param name="pageIndex"></param>
        /// <param name="pageSize"></param>
        /// <param name="count"></param>
        /// <param name="pageCount"></param>
        /// <returns></returns>
        public IQueryable<T> Pages<T>(IQueryable<T> query, int pageIndex, int pageSize, out int count, out int pageCount) where T : class
        {
            if (pageIndex < 1)
            {
                pageIndex = 1;
            }
            if (pageSize < 1)
            {
                pageSize = 10;
            }
            if (pageSize > 100)
            {
                pageSize = 100;
            }
            count = query.Count();
            pageCount = count / pageSize;
            if ((decimal)pageCount < (decimal)count / (decimal)pageSize)
            {
                pageCount++;
            }
            query = query.Skip((pageIndex - 1) * pageSize).Take(pageSize);
            return query;
        }


        /// <summary>save all the changes add, update, delete</summary>
        public void Save()
        {
            this.DataContext.SaveChanges();
        }

        /// <summary>add entity to context or database</summary>
        /// <param name="entity"></param>
        /// <param name="save">save the add and all changes before this to database</param>
        public void Add(object entity, bool save = false)
        {
            this.DataContext.Add(entity);
            if (!save)
                return;
            this.Save();
        }

        /// <summary>update entity to context or database</summary>
        /// <param name="entity"></param>
        /// <param name="save">save the update and all changes before this to database</param>
        public void Update(object entity, bool save = false)
        {
            this.DataContext.Update(entity);
            if (!save)
                return;
            this.Save();
        }

        /// <summary>update entitys to context or database</summary>
        /// <param name="list"></param>
        /// <param name="save">save the updates and all changes before this to database</param>
        public void Update(IEnumerable<object> list, bool save = false)
        {
            this.DataContext.UpdateRange(list);
            if (!save)
                return;
            this.Save();
        }

        /// <summary>delete entity from context or database</summary>
        /// <param name="entity"></param>
        /// <param name="save">save the delete and all changes before this to database</param>
        public void Delete(object entity, bool save = false)
        {
            this.DataContext.Remove(entity);
            if (!save)
                return;
            this.Save();
        }

        /// <summary>delete entitys from context or database</summary>
        /// <param name="list"></param>
        /// <param name="save">save the deletes and all changes before this to database</param>
        public void Delete(IEnumerable<object> list, bool save = false)
        {
            this.DataContext.RemoveRange(list);
            if (!save)
                return;
            this.Save();
        }
    }

　　需要注意的地方我说一下

　　

public class DbRepository<TContext> : IDbRepository<TContext> where TContext : DbContext
    {
        private TContext _context;

        protected virtual TContext DataContext
        {
            get
            {
                if ((object)this._context == null)
                    this._context = ServiceCollectionExtension.New<TContext>();
                return this._context;
            }
        }
}

　　

　　ServiceCollectionExtension.New<TContext>()是我写的一个服务拓展，可以创建出一个TContext类型的实体，当然我们可以把这个DbRepository放到Application
　　这样Repository这块东西就只是Domain和Application通过接口之间的约束了

　　3.简要说一下ServiceCollectionExtension里的东西

　　

　　这个拓展我写到了Infrastructure里，主要用来做服务注册用的，他非常重要非常重要非常重要，代码我这里分享一下。

public static class ServiceCollectionExtension
    {
        private static IHttpContextAccessor _httpContextAccessor;

        private static IServiceProvider _serviceProvider;
        /// <summary>
        /// cerf weige
        /// </summary>
        private static IDataProtector Protector => ServiceProvider.GetDataProtector("AspNetCore", Array.Empty<string>());


        /// <summary>
        /// 注册常用服务
        /// </summary>
        /// <param name="service"></param>
        public static IServiceCollection AddRegisterContainer(this IServiceCollection services)
        {
            //注入httpContextAccessor
            services.AddSingleton<IHttpContextAccessor, HttpContextAccessor>();
            //注入配置文件获取服务
            services.AddSingleton<IConfigGeter, ConfigGeter>();
            return services;
        }

        //
        /// <summary>
        /// 创建自定义AddMvc
        /// </summary>
        /// <param name="services"></param>
        /// <param name="mvcOptions"></param>
        /// <returns></returns>
        public static IMvcBuilder AddMvcCustomer(this IServiceCollection services, Action<MvcApplicationOptions> mvcOptions = null)
        {
            ServiceCollectionDescriptorExtensions.Replace(services, ServiceDescriptor.Singleton<IFilterProvider, MvcFilterProvider>());

            var result= services.AddMvc().SetCompatibilityVersion(CompatibilityVersion.Version_2_1).AddJsonOptions(_mvcJsonOptions =>
            {
                _mvcJsonOptions.SerializerSettings.NullValueHandling = NullValueHandling.Ignore;
                _mvcJsonOptions.SerializerSettings.DateFormatString = "yyyy-MM-d HH:mm";
                _mvcJsonOptions.SerializerSettings.DateTimeZoneHandling = DateTimeZoneHandling.Local;
                _mvcJsonOptions.SerializerSettings.ContractResolver = new CamelCasePropertyNamesContractResolver();
                _mvcJsonOptions.SerializerSettings.ReferenceLoopHandling = ReferenceLoopHandling.Ignore;
            });

            services.AddAuthentication(options => options.AddScheme<MvcCookieAuthenticationHandler>(TbConstant.WEBSITE_AUTHENTICATION_SCHEME, TbConstant.WEBSITE_AUTHENTICATION_SCHEME));
            
            services.BuildServiceProvider().RegisterServiceProvider();
            return result;
        }

        /// <summary>
        /// 
        /// </summary>
        /// <typeparam name="T"></typeparam>
        /// <param name="services"></param>
        /// <returns></returns>
        public static IServiceCollection AddAuthorizedFilter<T>(this IServiceCollection services) where T : class, IAuthorizationFilter
        {
            services.AddTransient<IAuthorizationFilter, T>();
            return services;
        }
        /// <summary>
        /// 创建服务提供者
        /// </summary>
        /// <param name="serviceProvider"></param>
        /// <returns></returns>
        public static IServiceProvider RegisterServiceProvider(this IServiceProvider serviceProvider)
        {
            _serviceProvider = serviceProvider ?? throw new MvcException("IServiceProvider serviceProvider canot be null");
            _httpContextAccessor = serviceProvider.GetRequiredService<IHttpContextAccessor>();
            return serviceProvider;
        }

        /// <summary>
        /// 
        /// </summary>
        public static IServiceProvider ServiceProvider
        {
            get
            {
                if (_serviceProvider == null)
                {
                    return _httpContextAccessor.HttpContext.RequestServices;
                }
                return _serviceProvider;//_httpContextAccessor.HttpContext.RequestServices;
            }
        }

        public static HttpContext HttpContext => _httpContextAccessor?.HttpContext;


        public static object New(Type type)
        {
            return ActivatorUtilities.CreateInstance(ServiceProvider, type, Array.Empty<object>());
        }

        public static T New<T>()
        {
            return ActivatorUtilities.CreateInstance<T>(ServiceProvider, Array.Empty<object>());
        }

        public static T Get<T>()
        {
            T val;
            try
            {
                val = ActivatorUtilities.GetServiceOrCreateInstance<T>(ServiceProvider);
            }
            catch (Exception ex)
            {
                try
                {
                    val = ServiceProvider.GetService<T>();
                }
                catch (Exception ex2)
                {
                    try
                    {
                        val = default(T);
                    }
                    catch (Exception ex3)
                    {
                        throw new MvcException($"ex0={ex.Message}; ex1={ex2.Message}; ex2={ex3.Message};");
                    }
                }
            }
            if (val != null)
            {
                return val;
            }
            return default(T);
        }

        public static object Get(Type type)
        {
            try
            {
                return ActivatorUtilities.GetServiceOrCreateInstance(ServiceProvider, type);
            }
            catch
            {
                object service = ServiceProvider.GetService(type);
                if (service == null)
                {
                    return null;
                }
                return service;
            }
        }

        /// <summary>
        /// base 64/256解密
        /// </summary>
        /// <param name="plaintext">密文</param>
        /// <returns></returns>
        public static string Decrypt(string plaintext)
        {
            IDataProtector protector = Protector;
            if (protector is Base256DataProtector)
            {
                return (protector as Base256DataProtector).Unprotect(plaintext, true);
            }
            return protector.Unprotect(plaintext);
        }

        /// <summary>
        /// base64/256加密
        /// </summary>
        /// <param name="plaintext">明文</param>
        /// <returns></returns>
        public static string Encrypt(string plaintext)
        {
            IDataProtector protector = Protector;
            if (protector is Base256DataProtector)
            {
                return (protector as Base256DataProtector).Protect(plaintext, true);
            }
            return protector.Protect(plaintext);
        }

        #endregion

        public static IServiceCollection AddTestIdentityServer(this IServiceCollection services)
        {
            services.AddIdentityServer()
                .AddDeveloperSigningCredential()
                .AddInMemoryApiResources(Auth.Config.GetApiResources())
                .AddResourceOwnerValidator<ResourceOwnerPasswordValidator>()
                .AddInMemoryClients(Auth.Config.GetClients())
                .AddTestUsers(Auth.Config.GetUsers());
            return services;
        }

        public static IServiceCollection AddTestAuthentication(this IServiceCollection services)
        {
            services.AddAuthentication("Bearer")
                .AddIdentityServerAuthentication(options =>
                {
                    options.Authority = ConfigLocator.Instance["ApplicationUrl"];
                    options.RequireHttpsMetadata = false;
                    options.ApiName = "banbrickcustomer";
                });
            return services;
        }
    }

　　4.写自己具体的服务

　　

　　AccountService实现了接口IAccountService

　　5.在StartUp里注入服务

　　

　　6.在控制器里使用

　　

　　这样就大体上从上到下，梳理了一下这个项目

三.下期分享

　　这个项目下期准备继续讲一下里面的

• BaseController里分装的奥妙
• 配置文件读取强类型Model
• Redis如何更好灵活的配置