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

 

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();
        }
    }

view code

　　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;
        }
    }

view code

　　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