NopCommerce 4.2 是一个使用最新.net数据的开源的国外的商城项目，设计规范且代码质量很高，断断续续学习了一个周感觉还是很有研究的价值，希望整理为一个自己可以使用的通用框架，所以今天开了一个笔记记录学习遇到的问题，从同重新写一遍这个项目。
一些基础的安装和介绍参考：https://www.cnblogs.com/edisonchou/p/nop_commerce_study_part_1.html
每个模块的详细代码设计说明参考：https://www.lanhusoft.com/Article/349.html
说明很详细，虽然使用的版本很低且使用的是.net MVC但是对于理解代码的设计有很大的帮助，代码整体结构没有太大变化。
首先这次重写学习是以一个Http请求流程的方式垂直学习项目结构，如果想模块化的了解可以参考上面模块学习。
20190826
首先从注册服务和管道开始入手开始慢慢的看这个项目
Program.cs
public static void Main(string[] args)
{
var host = WebHost.CreateDefaultBuilder(args)
.UseKestrel(options => options.AddServerHeader = false)
.UseStartup<Startup>()
.Build();
host.Run();
}
没有什么特别的正常例子 启动容器=》注册服务管道=》启动项目
可以参考：https://www.cnblogs.com/artech/p/rebuild-pipeline-01.html
Startup.cs
namespace Nop.Web
public class Startup
{
#region Fields
private readonly IConfiguration _configuration;
private readonly IHostingEnvironment _hostingEnvironment;
#endregion
#region Ctor
public Startup(IConfiguration configuration, IHostingEnvironment hostingEnvironment)
{
_configuration = configuration;
_hostingEnvironment = hostingEnvironment;
}
#endregion
/// <summary>
/// Add services to the application and configure service provider
/// </summary>
/// <param name="services">Collection of service descriptors</param>
public IServiceProvider ConfigureServices(IServiceCollection services)
{
return services.ConfigureApplicationServices(_configuration, _hostingEnvironment);
}
/// <summary>
/// Configure the application HTTP request pipeline
/// </summary>
/// <param name="application">Builder for configuring an application's request pipeline</param>
public void Configure(IApplicationBuilder application)
{
application.ConfigureRequestPipeline();
}
这里的服务绑定和管道绑定都是调用自己写的绑定类实现的加载，首先从service的绑定开始。
ServiceCollectionExtensions.cs
首先是主要的绑定逻辑
/// <summary>
/// Add services to the application and configure service provider
/// </summary>
/// <param name="services">Collection of service descriptors</param>
/// <param name="configuration">Configuration of the application</param>
/// <param name="hostingEnvironment">Hosting environment</param>
/// <returns>Configured service provider</returns>
public static IServiceProvider ConfigureApplicationServices(this IServiceCollection services,
IConfiguration configuration, IHostingEnvironment hostingEnvironment)
{
//most of API providers require TLS 1.2 nowadays
ServicePointManager.SecurityProtocol = SecurityProtocolType.Tls12;
//add NopConfig configuration parameters
var nopConfig = services.ConfigureStartupConfig<NopConfig>(configuration.GetSection("Nop"));
//add hosting configuration parameters
services.ConfigureStartupConfig<HostingConfig>(configuration.GetSection("Hosting"));
//add accessor to HttpContext
services.AddHttpContextAccessor();
//create default file provider
CommonHelper.DefaultFileProvider = new NopFileProvider(hostingEnvironment);
//initialize plugins
var mvcCoreBuilder = services.AddMvcCore();
mvcCoreBuilder.PartManager.InitializePlugins(nopConfig);
//create engine and configure service provider
var engine = EngineContext.Create();
var serviceProvider = engine.ConfigureServices(services, configuration, nopConfig);
//further actions are performed only when the database is installed
if (!DataSettingsManager.DatabaseIsInstalled)
return serviceProvider;
//initialize and start schedule tasks
TaskManager.Instance.Initialize();
TaskManager.Instance.Start();
//log application start
engine.Resolve<ILogger>().Information("Application started");
//install plugins
engine.Resolve<IPluginService>().InstallPlugins();
return serviceProvider;
}
这里首先要理解IServiceCollection IConfiguration using Microsoft.Extensions.Configuration;
参考博客：https://www.cnblogs.com/nianming/p/7083964.html Config应用
https://www.cnblogs.com/artech/p/asp-net-core-di-register.html .net core服务的注册与提供
下面就是一个一个的实现
//add NopConfig configuration parameters
//添加nopconfig配置参数
var nopConfig = services.ConfigureStartupConfig<NopConfig>
(configuration.GetSection("Nop"));
实现：
/// <summary>
/// 创建、绑定和注册指定的配置参数作为服务
/// </summary>
/// <typeparam name="TConfig">Configuration parameters</typeparam>
/// <param name="services">Collection of service descriptors</param>
/// <param name="configuration">Set of key/value application configuration properties</param>
/// <returns>Instance of configuration parameters</returns>
public static TConfig ConfigureStartupConfig<TConfig>(this IServiceCollection services, IConfiguration configuration) where TConfig : class, new()
{
if (services == null)
throw new ArgumentNullException(nameof(services));
if(configuration == null)
{
throw new ArgumentNullException(nameof(configuration));
}
//创建配置实例
var config = new TConfig();
//将其绑定到配置的适当部分
configuration.Bind(config);
//并将其注册为服务
services.AddSingleton(config);
return config;
}
appsettings.json 配置文件信息：
"Nop": {
//Enable if you want to see the full error in production environment. It's ignored (always enabled) in development environment
"DisplayFullErrorStack": false,
//Windows Azure BLOB storage.
//Specify your connection string, container name, end point for BLOB storage here
"AzureBlobStorageConnectionString": "",
"AzureBlobStorageContainerName": "",
"AzureBlobStorageEndPoint": "",
"AzureBlobStorageAppendContainerName": "true",
//Redis support (used by web farms, Azure, etc). Find more about it at https://azure.microsoft.com/en-us/documentation/articles/cache-dotnet-how-to-use-azure-redis-cache/
"RedisEnabled": false,
//Redis database id; If you need to use a specific redis database, just set its number here. Set empty if should use the different database for each data type (used by default); set -1 if you want to use the default database
"RedisDatabaseId": "",
"RedisConnectionString": "127.0.0.1:6379,ssl=False",
"UseRedisToStoreDataProtectionKeys": false,
"UseRedisForCaching": false,
"UseRedisToStorePluginsInfo": false,
//You can get the latest version of user agent strings at http://browscap.org/
//Leave "CrawlersOnlyDatabasePath" attribute empty if you want to use full version of "browscap.xml" file
"UserAgentStringsPath": "~/App_Data/browscap.xml",
"CrawlerOnlyUserAgentStringsPath": "~/App_Data/browscap.crawlersonly.xml",
//Do not edit this element. For advanced users only
"DisableSampleDataDuringInstallation": false,
"UseFastInstallationService": false,
"PluginsIgnoredDuringInstallation": "",
//Enable if you want to clear /Plugins/bin directory on application startup
"ClearPluginShadowDirectoryOnStartup": true,
//Enable if you want to copy "locked" assemblies from /Plugins/bin directory to temporary subdirectories on application startup
"CopyLockedPluginAssembilesToSubdirectoriesOnStartup": false,
//Enable if you want to copy plugins library to the /Plugins/bin directory on application startup
"UsePluginsShadowCopy": true,
//Enable if you want to load an assembly into the load-from context, by passing some security checks
"UseUnsafeLoadAssembly": true,
//Enable for backwards compatibility with SQL Server 2008 and SQL Server 2008R2
"UseRowNumberForPaging": false,
//Enable to store TempData in the session state
"UseSessionStateTempDataProvider": false
}
以上面为例
这样完成了一个配置文件信息和一个实例模型的绑定。
然后附加到httpconxt
//add accessor to HttpContext
//附加到httpconxt
services.AddHttpContextAccessor();
public static void AddHttpContextAccessor(this IServiceCollection services)
{
services.AddSingleton<IHttpContextAccessor, HttpContextAccessor>();
}
20190826
然后绑定的是文件帮助类
//create default file provider
//创建默认文件提供程序
CommonHelper.DefaultFileProvider = new NopFileProvider(hostingEnvironment);
下面Core里面添加了一个CommonHelper通用的帮助类、INopFileProvider NopFileProvider 对文件操作的帮助类
看一下INopFileProvider里面包含了所有对文件的操作
所在namespace :
namespace Nop.Core.Infrastructure
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