NopCommerce Url分析

using System;
using System.Web;
using System.Web.Routing;
using Nop.Core;
using Nop.Core.Data;
using Nop.Core.Infrastructure;
using Nop.Services.Events;
using Nop.Services.Seo;
using Nop.Web.Framework.Localization;
 
namespace Nop.Web.Framework.Seo
{
    /// <summary>
    /// Provides properties and methods for defining a SEO friendly route, and for getting information about the route.
    /// </summary>
    public partial class GenericPathRoute : LocalizedRoute
    {
        #region Constructors
 
        /// <summary>
        /// Initializes a new instance of the System.Web.Routing.Route class, using the specified URL pattern and handler class.
        /// </summary>
        /// <param name="url">The URL pattern for the route.</param>
        /// <param name="routeHandler">The object that processes requests for the route.</param>
        public GenericPathRoute(string url, IRouteHandler routeHandler)
            : base(url, routeHandler)
        {
        }
 
        /// <summary>
        /// Initializes a new instance of the System.Web.Routing.Route class, using the specified URL pattern, handler class and default parameter values.
        /// </summary>
        /// <param name="url">The URL pattern for the route.</param>
        /// <param name="defaults">The values to use if the URL does not contain all the parameters.</param>
        /// <param name="routeHandler">The object that processes requests for the route.</param>
        public GenericPathRoute(string url, RouteValueDictionary defaults, IRouteHandler routeHandler)
            : base(url, defaults, routeHandler)
        {
        }
 
        /// <summary>
        /// Initializes a new instance of the System.Web.Routing.Route class, using the specified URL pattern, handler class, default parameter values and constraints.
        /// </summary>
        /// <param name="url">The URL pattern for the route.</param>
        /// <param name="defaults">The values to use if the URL does not contain all the parameters.</param>
        /// <param name="constraints">A regular expression that specifies valid values for a URL parameter.</param>
        /// <param name="routeHandler">The object that processes requests for the route.</param>
        public GenericPathRoute(string url, RouteValueDictionary defaults, RouteValueDictionary constraints, IRouteHandler routeHandler)
            : base(url, defaults, constraints, routeHandler)
        {
        }
 
        /// <summary>
        /// Initializes a new instance of the System.Web.Routing.Route class, using the specified URL pattern, handler class, default parameter values,
        /// constraints,and custom values.
        /// </summary>
        /// <param name="url">The URL pattern for the route.</param>
        /// <param name="defaults">The values to use if the URL does not contain all the parameters.</param>
        /// <param name="constraints">A regular expression that specifies valid values for a URL parameter.</param>
        /// <param name="dataTokens">Custom values that are passed to the route handler, but which are not used to determine whether the route matches a specific URL pattern. The route handler might need these values to process the request.</param>
        /// <param name="routeHandler">The object that processes requests for the route.</param>
        public GenericPathRoute(string url, RouteValueDictionary defaults, RouteValueDictionary constraints, RouteValueDictionary dataTokens, IRouteHandler routeHandler)
            : base(url, defaults, constraints, dataTokens, routeHandler)
        {
        }
 
        #endregion
 
        #region Methods
 
        /// <summary>
        /// Returns information about the requested route.
        /// </summary>
        /// <param name="httpContext">An object that encapsulates information about the HTTP request.</param>
        /// <returns>
        /// An object that contains the values from the route definition.
        /// </returns>
        public override RouteData GetRouteData(HttpContextBase httpContext)
        {
            RouteData data = base.GetRouteData(httpContext);
            if (data != null && DataSettingsHelper.DatabaseIsInstalled())
            {
                var urlRecordService = EngineContext.Current.Resolve<IUrlRecordService>();
                var slug = data.Values["generic_se_name"] as string;
                //performance optimization.
                //we load a cached verion here. it reduces number of SQL requests for each page load
                var urlRecord = urlRecordService.GetBySlugCached(slug);
                //comment the line above and uncomment the line below in order to disable this performance "workaround"
                //var urlRecord = urlRecordService.GetBySlug(slug);
                if (urlRecord == null)
                {
                    //no URL record found
 
                    //var webHelper = EngineContext.Current.Resolve<IWebHelper>();
                    //var response = httpContext.Response;
                    //response.Status = "302 Found";
                    //response.RedirectLocation = webHelper.GetStoreLocation(false);
                    //response.End();
                    //return null;
 
                    data.Values["controller"] = "Common";
                    data.Values["action"] = "PageNotFound";
                    return data;
                }
                //ensre that URL record is active
                if (!urlRecord.IsActive)
                {
                    //URL record is not active. let's find the latest one
                    var activeSlug = urlRecordService.GetActiveSlug(urlRecord.EntityId, urlRecord.EntityName, urlRecord.LanguageId);
                    if (string.IsNullOrWhiteSpace(activeSlug))
                    {
                        //no active slug found
 
                        //var webHelper = EngineContext.Current.Resolve<IWebHelper>();
                        //var response = httpContext.Response;
                        //response.Status = "302 Found";
                        //response.RedirectLocation = webHelper.GetStoreLocation(false);
                        //response.End();
                        //return null;
 
                        data.Values["controller"] = "Common";
                        data.Values["action"] = "PageNotFound";
                        return data;
                    }
 
                    //the active one is found
                    var webHelper = EngineContext.Current.Resolve<IWebHelper>();
                    var response = httpContext.Response;
                    response.Status = "301 Moved Permanently";
                    response.RedirectLocation = string.Format("{0}{1}", webHelper.GetStoreLocation(false), activeSlug);
                    response.End();
                    return null;
                }
 
                //ensure that the slug is the same for the current language
                //otherwise, it can cause some issues when customers choose a new language but a slug stays the same
                var workContext = EngineContext.Current.Resolve<IWorkContext>();
                var slugForCurrentLanguage = SeoExtensions.GetSeName(urlRecord.EntityId, urlRecord.EntityName, workContext.WorkingLanguage.Id);
                if (!String.IsNullOrEmpty(slugForCurrentLanguage) &&
                    !slugForCurrentLanguage.Equals(slug, StringComparison.InvariantCultureIgnoreCase))
                {
                    //we should make not null or "" validation above because some entities does not have SeName for standard (ID=0) language (e.g. news, blog posts)
                    var webHelper = EngineContext.Current.Resolve<IWebHelper>();
                    var response = httpContext.Response;
                    //response.Status = "302 Found";
                    response.Status = "302 Moved Temporarily";
                    response.RedirectLocation = string.Format("{0}{1}", webHelper.GetStoreLocation(false), slugForCurrentLanguage);
                    response.End();
                    return null;
                }
 
                //process URL
                switch (urlRecord.EntityName.ToLowerInvariant())
                {
                    case "product":
                        {
                            data.Values["controller"] = "Product";
                            data.Values["action"] = "ProductDetails";
                            data.Values["productid"] = urlRecord.EntityId;
                            data.Values["SeName"] = urlRecord.Slug;
                        }
                        break;
                    case "category":
                        {
                            data.Values["controller"] = "Catalog";
                            data.Values["action"] = "Category";
                            data.Values["categoryid"] = urlRecord.EntityId;
                            data.Values["SeName"] = urlRecord.Slug;
                        }
                        break;
                    case "manufacturer":
                        {
                            data.Values["controller"] = "Catalog";
                            data.Values["action"] = "Manufacturer";
                            data.Values["manufacturerid"] = urlRecord.EntityId;
                            data.Values["SeName"] = urlRecord.Slug;
                        }
                        break;
                    case "vendor":
                        {
                            data.Values["controller"] = "Catalog";
                            data.Values["action"] = "Vendor";
                            data.Values["vendorid"] = urlRecord.EntityId;
                            data.Values["SeName"] = urlRecord.Slug;
                        }
                        break;
                    case "newsitem":
                        {
                            data.Values["controller"] = "News";
                            data.Values["action"] = "NewsItem";
                            data.Values["newsItemId"] = urlRecord.EntityId;
                            data.Values["SeName"] = urlRecord.Slug;
                        }
                        break;
                    case "blogpost":
                        {
                            data.Values["controller"] = "Blog";
                            data.Values["action"] = "BlogPost";
                            data.Values["blogPostId"] = urlRecord.EntityId;
                            data.Values["SeName"] = urlRecord.Slug;
                        }
                        break;
                    case "topic":
                        {
                            data.Values["controller"] = "Topic";
                            data.Values["action"] = "TopicDetails";
                            data.Values["topicId"] = urlRecord.EntityId;
                            data.Values["SeName"] = urlRecord.Slug;
                        }
                        break;
                    default:
                        {
                            //no record found
 
                            //generate an event this way developers could insert their own types
                            EngineContext.Current.Resolve<IEventPublisher>()
                                .Publish(new CustomUrlRecordEntityNameRequested(data, urlRecord));
                        }
                        break;
                }
            }
            return data;
        }
 
        #endregion
    }
}

　　

using System.Web;
using System.Web.Routing;
using Nop.Core.Data;
using Nop.Core.Domain.Localization;
using Nop.Core.Infrastructure;
 
namespace Nop.Web.Framework.Localization
{
    /// <summary>
    /// Provides properties and methods for defining a localized route, and for getting information about the localized route.
    /// </summary>
    public class LocalizedRoute : Route
    {
        #region Fields
 
        private bool? _seoFriendlyUrlsForLanguagesEnabled;
 
        #endregion
 
        #region Constructors
 
        /// <summary>
        /// Initializes a new instance of the System.Web.Routing.Route class, using the specified URL pattern and handler class.
        /// </summary>
        /// <param name="url">The URL pattern for the route.</param>
        /// <param name="routeHandler">The object that processes requests for the route.</param>
        public LocalizedRoute(string url, IRouteHandler routeHandler)
            : base(url, routeHandler)
        {
        }
 
        /// <summary>
        /// Initializes a new instance of the System.Web.Routing.Route class, using the specified URL pattern, handler class and default parameter values.
        /// </summary>
        /// <param name="url">The URL pattern for the route.</param>
        /// <param name="defaults">The values to use if the URL does not contain all the parameters.</param>
        /// <param name="routeHandler">The object that processes requests for the route.</param>
        public LocalizedRoute(string url, RouteValueDictionary defaults, IRouteHandler routeHandler)
            : base(url, defaults, routeHandler)
        {
        }
 
        /// <summary>
        /// Initializes a new instance of the System.Web.Routing.Route class, using the specified URL pattern, handler class, default parameter values and constraints.
        /// </summary>
        /// <param name="url">The URL pattern for the route.</param>
        /// <param name="defaults">The values to use if the URL does not contain all the parameters.</param>
        /// <param name="constraints">A regular expression that specifies valid values for a URL parameter.</param>
        /// <param name="routeHandler">The object that processes requests for the route.</param>
        public LocalizedRoute(string url, RouteValueDictionary defaults, RouteValueDictionary constraints, IRouteHandler routeHandler)
            : base(url, defaults, constraints, routeHandler)
        {
        }
 
        /// <summary>
        /// Initializes a new instance of the System.Web.Routing.Route class, using the specified URL pattern, handler class, default parameter values,
        /// constraints,and custom values.
        /// </summary>
        /// <param name="url">The URL pattern for the route.</param>
        /// <param name="defaults">The values to use if the URL does not contain all the parameters.</param>
        /// <param name="constraints">A regular expression that specifies valid values for a URL parameter.</param>
        /// <param name="dataTokens">Custom values that are passed to the route handler, but which are not used to determine whether the route matches a specific URL pattern. The route handler might need these values to process the request.</param>
        /// <param name="routeHandler">The object that processes requests for the route.</param>
        public LocalizedRoute(string url, RouteValueDictionary defaults, RouteValueDictionary constraints, RouteValueDictionary dataTokens, IRouteHandler routeHandler)
            : base(url, defaults, constraints, dataTokens, routeHandler)
        {
        }
 
        #endregion
 
        #region Methods
 
        /// <summary>
        /// Returns information about the requested route.
        /// </summary>
        /// <param name="httpContext">An object that encapsulates information about the HTTP request.</param>
        /// <returns>
        /// An object that contains the values from the route definition.
        /// </returns>
        public override RouteData GetRouteData(HttpContextBase httpContext)
        {
            if (DataSettingsHelper.DatabaseIsInstalled() && this.SeoFriendlyUrlsForLanguagesEnabled)
            {
                string virtualPath = httpContext.Request.AppRelativeCurrentExecutionFilePath;
                string applicationPath = httpContext.Request.ApplicationPath;
                if (virtualPath.IsLocalizedUrl(applicationPath, false))
                {
                    //In ASP.NET Development Server, an URL like "http://localhost/Blog.aspx/Categories/BabyFrog" will return
                    //"~/Blog.aspx/Categories/BabyFrog" as AppRelativeCurrentExecutionFilePath.
                    //However, in II6, the AppRelativeCurrentExecutionFilePath is "~/Blog.aspx"
                    //It seems that IIS6 think we're process Blog.aspx page.
                    //So, I'll use RawUrl to re-create an AppRelativeCurrentExecutionFilePath like ASP.NET Development Server.
 
                    //Question: should we do path rewriting right here?
                    string rawUrl = httpContext.Request.RawUrl;
                    var newVirtualPath = rawUrl.RemoveLanguageSeoCodeFromRawUrl(applicationPath);
                    if (string.IsNullOrEmpty(newVirtualPath))
                        newVirtualPath = "/";
                    newVirtualPath = newVirtualPath.RemoveApplicationPathFromRawUrl(applicationPath);
                    newVirtualPath = "~" + newVirtualPath;
                    httpContext.RewritePath(newVirtualPath, true);
                }
            }
            RouteData data = base.GetRouteData(httpContext);
            return data;
        }
 
        /// <summary>
        /// Returns information about the URL that is associated with the route.
        /// </summary>
        /// <param name="requestContext">An object that encapsulates information about the requested route.</param>
        /// <param name="values">An object that contains the parameters for a route.</param>
        /// <returns>
        /// An object that contains information about the URL that is associated with the route.
        /// </returns>
        public override VirtualPathData GetVirtualPath(RequestContext requestContext, RouteValueDictionary values)
        {
            VirtualPathData data = base.GetVirtualPath(requestContext, values);
 
            if (data != null && DataSettingsHelper.DatabaseIsInstalled() && this.SeoFriendlyUrlsForLanguagesEnabled)
            {
                string rawUrl = requestContext.HttpContext.Request.RawUrl;
                string applicationPath = requestContext.HttpContext.Request.ApplicationPath;
                if (rawUrl.IsLocalizedUrl(applicationPath, true))
                {
                    data.VirtualPath = string.Concat(rawUrl.GetLanguageSeoCodeFromUrl(applicationPath, true), "/",
                        data.VirtualPath);
                }
            }
            return data;
        }
 
        public virtual void ClearSeoFriendlyUrlsCachedValue()
        {
            _seoFriendlyUrlsForLanguagesEnabled = null;
        }
 
        #endregion
 
        #region Properties
 
        protected bool SeoFriendlyUrlsForLanguagesEnabled
        {
            get
            {
                if (!_seoFriendlyUrlsForLanguagesEnabled.HasValue)
                    _seoFriendlyUrlsForLanguagesEnabled = EngineContext.Current.Resolve<LocalizationSettings>().SeoFriendlyUrlsForLanguagesEnabled;
 
                return _seoFriendlyUrlsForLanguagesEnabled.Value;
            }
        }
 
        #endregion
    }
}

using System.Runtime.CompilerServices;
 
namespace System.Web.Routing
{
    //
    // 摘要:
    //     提供用于定义路由及获取路由相关信息的属性和方法。
    [TypeForwardedFrom("System.Web.Routing, Version=3.5.0.0, Culture=Neutral, PublicKeyToken=31bf3856ad364e35")]
    public class Route : RouteBase
    {
        //
        // 摘要:
        //     使用指定的 URL 模式和处理程序类初始化 System.Web.Routing.Route 类的新实例。
        //
        // 参数:
        //   url:
        //     路由的 URL 模式。
        //
        //   routeHandler:
        //     处理路由请求的对象。
        public Route(string url, IRouteHandler routeHandler);
        //
        // 摘要:
        //     使用指定的 URL 模式、默认参数值和处理程序类初始化 System.Web.Routing.Route 类的新实例。
        //
        // 参数:
        //   url:
        //     路由的 URL 模式。
        //
        //   defaults:
        //     用于 URL 中缺失的任何参数的值。
        //
        //   routeHandler:
        //     处理路由请求的对象。
        public Route(string url, RouteValueDictionary defaults, IRouteHandler routeHandler);
        //
        // 摘要:
        //     使用指定的 URL 模式、默认参数值、约束和处理程序类初始化 System.Web.Routing.Route 类的新实例。
        //
        // 参数:
        //   url:
        //     路由的 URL 模式。
        //
        //   defaults:
        //     要在 URL 不包含所有参数时使用的值。
        //
        //   constraints:
        //     一个用于指定 URL 参数的有效值的正则表达式。
        //
        //   routeHandler:
        //     处理路由请求的对象。
        public Route(string url, RouteValueDictionary defaults, RouteValueDictionary constraints, IRouteHandler routeHandler);
        //
        // 摘要:
        //     使用指定的 URL 模式、默认参数值、约束、自定义值和处理程序类初始化 System.Web.Routing.Route 类的新实例。
        //
        // 参数:
        //   url:
        //     路由的 URL 模式。
        //
        //   defaults:
        //     要在 URL 不包含所有参数时使用的值。
        //
        //   constraints:
        //     一个用于指定 URL 参数的有效值的正则表达式。
        //
        //   dataTokens:
        //     传递到路由处理程序但未用于确定该路由是否匹配特定 URL 模式的自定义值。 这些值会传递到路由处理程序，以便用于处理请求。
        //
        //   routeHandler:
        //     处理路由请求的对象。
        public Route(string url, RouteValueDictionary defaults, RouteValueDictionary constraints, RouteValueDictionary dataTokens, IRouteHandler routeHandler);
 
        //
        // 摘要:
        //     获取或设置为 URL 参数指定有效值的表达式的词典。
        //
        // 返回结果:
        //     一个包含参数名称和表达式的对象。
        public RouteValueDictionary Constraints { get; set; }
        //
        // 摘要:
        //     获取或设置传递到路由处理程序但未用于确定该路由是否匹配 URL 模式的自定义值。
        //
        // 返回结果:
        //     一个包含自定义值的对象。
        public RouteValueDictionary DataTokens { get; set; }
        //
        // 摘要:
        //     获取或设置要在 URL 不包含所有参数时使用的值。
        //
        // 返回结果:
        //     一个包含参数名称和默认值的对象。
        public RouteValueDictionary Defaults { get; set; }
        //
        // 摘要:
        //     获取或设置处理路由请求的对象。
        //
        // 返回结果:
        //     处理请求的对象。
        public IRouteHandler RouteHandler { get; set; }
        //
        // 摘要:
        //     获取或设置路由的 URL 模式。
        //
        // 返回结果:
        //     用于匹配路由和 URL 的模式。
        //
        // 异常:
        //   T:System.ArgumentException:
        //     以下任一值： 以 ~ 或 / 开头的值。 包含 ? 字符的值。 “全部捕捉”参数不在末尾。
        //
        //   T:System.Exception:
        //     没有使用分隔符或文字常量分隔 URL 分段。
        public string Url { get; set; }
 
        //
        // 摘要:
        //     返回有关所请求路由的信息。
        //
        // 参数:
        //   httpContext:
        //     一个对象，封装有关 HTTP 请求的信息。
        //
        // 返回结果:
        //     一个对象，其中包含路由定义中的值。
        public override RouteData GetRouteData(HttpContextBase httpContext);
        //
        // 摘要:
        //     返回与路由关联的 URL 的相关信息。
        //
        // 参数:
        //   requestContext:
        //     一个对象，封装有关所请求的路由的信息。
        //
        //   values:
        //     一个包含路由参数的对象。
        //
        // 返回结果:
        //     一个包含与路由关联的 URL 的相关信息的对象。
        public override VirtualPathData GetVirtualPath(RequestContext requestContext, RouteValueDictionary values);
        //
        // 摘要:
        //     确定参数值是否与该参数的约束匹配。
        //
        // 参数:
        //   httpContext:
        //     一个对象，封装有关 HTTP 请求的信息。
        //
        //   constraint:
        //     用于测试 parameterName 的正则表达式或对象。
        //
        //   parameterName:
        //     要测试的参数的名称。
        //
        //   values:
        //     要测试的值。
        //
        //   routeDirection:
        //     一个指定 URL 路由是否处理传入请求或构造 URL 的值。
        //
        // 返回结果:
        //     如果参数值与约束匹配，则为 true；否则为 false。
        //
        // 异常:
        //   T:System.InvalidOperationException:
        //     constraint 不是包含正则表达式的字符串。
        protected virtual bool ProcessConstraint(HttpContextBase httpContext, object constraint, string parameterName, RouteValueDictionary values, RouteDirection routeDirection);
    }
}

using System;
using System.Web.Mvc;
using System.Web.Routing;
 
namespace Nop.Web.Framework.Seo
{
    public static class GenericPathRouteExtensions
    {
        //Override for localized route
        public static Route MapGenericPathRoute(this RouteCollection routes, string name, string url)
        {
            return MapGenericPathRoute(routes, name, url, null /* defaults */, (object)null /* constraints */);
        }
        public static Route MapGenericPathRoute(this RouteCollection routes, string name, string url, object defaults)
        {
            return MapGenericPathRoute(routes, name, url, defaults, (object)null /* constraints */);
        }
        public static Route MapGenericPathRoute(this RouteCollection routes, string name, string url, object defaults, object constraints)
        {
            return MapGenericPathRoute(routes, name, url, defaults, constraints, null /* namespaces */);
        }
        public static Route MapGenericPathRoute(this RouteCollection routes, string name, string url, string[] namespaces)
        {
            return MapGenericPathRoute(routes, name, url, null /* defaults */, null /* constraints */, namespaces);
        }
        public static Route MapGenericPathRoute(this RouteCollection routes, string name, string url, object defaults, string[] namespaces)
        {
            return MapGenericPathRoute(routes, name, url, defaults, null /* constraints */, namespaces);
        }
        public static Route MapGenericPathRoute(this RouteCollection routes, string name, string url, object defaults, object constraints, string[] namespaces)
        {
            if (routes == null)
            {
                throw new ArgumentNullException("routes");
            }
            if (url == null)
            {
                throw new ArgumentNullException("url");
            }
 
            var route = new GenericPathRoute(url, new MvcRouteHandler())
            {
                Defaults = new RouteValueDictionary(defaults),
                Constraints = new RouteValueDictionary(constraints),
                DataTokens = new RouteValueDictionary()
            };
 
            if ((namespaces != null) && (namespaces.Length > ))
            {
                route.DataTokens["Namespaces"] = namespaces;
            }
 
            routes.Add(name, route);
 
            return route;
        }
    }
}