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原来早在webform控件时代就有了SiteMap这个东西,而进行MVC时代后,我们也希望有这样一个东西,它为我们提供了不少方便,如很方便的实现页面导航的内容修改,页面导航的样式换肤等.
我的MvcSiteMap主要由实体文件,XML配置文件,C#调用文件组成,当然为了前台使用方便,可以为HtmlHelper添加一个扩展方法.
实体部分
/// <summary>/// mvc站点地图(面包屑)/// </summary>public class MvcSiteMap{[XmlAttribute]public int ID { get; set; }[XmlAttribute]public string Title { get; set; }[XmlAttribute]public string Url { get; set; }[XmlAttribute]public int ParnetID { get; set; }public MvcSiteMap Parent { get; set; }}public class MvcSiteMapList : IConfiger{public List<MvcSiteMap> MvcSiteMaps { get; set; }}
XML部分代码
<?xml version="1.0" encoding="utf-8"?> <MvcSiteMapList><MvcSiteMaps><MvcSiteMap Title = "根" Url = "#" ID = "1" ParnetID = "0"></MvcSiteMap><MvcSiteMap Title = "测试网站" Url = "#" ID = "2" ParnetID = "1"></MvcSiteMap><MvcSiteMap Title = "首页123sadfasdfds" Url = "/" ID = "3" ParnetID = "2"></MvcSiteMap></MvcSiteMaps> </MvcSiteMapList>
C#核心代码
/// <summary>/// 站点地图工厂/// </summary>public class MvcSiteMapFactory{private static List<MvcSiteMap> siteMapList{get{if (string.IsNullOrWhiteSpace(SiteMapString))throw new ArgumentException("请为在web.config中配置SiteMapString节点,以支持网站地图功能");return ConfigCache.ConfigFactory.Instance.GetConfig<MvcSiteMapList>(System.Web.HttpContext.Current.Server.MapPath(SiteMapString)).MvcSiteMaps;}}private static string SiteMapString = System.Configuration.ConfigurationManager.AppSettings["SiteMapString"] ?? string.Empty;/// <summary>/// 生成站点地图/// </summary>/// <param name="url"></param>/// <returns></returns>public static MvcHtmlString GeneratorSiteMap(string url){StringBuilder str = new StringBuilder();List<string> pathList = new List<string>();MvcSiteMap current = GetSiteMap(url);GetFather(current, pathList);pathList.Reverse();pathList.ForEach(i =>{str.AppendFormat("<span style='padding:0 5px;'>{0}</span>>", i);});string result = str.ToString();if (!string.IsNullOrWhiteSpace(result))result = result.Remove(str.ToString().Length - 1);return MvcHtmlString.Create(result);}static MvcSiteMap GetSiteMap(string url){return siteMapList.FirstOrDefault(i => i.Url == url);}/// <summary>/// 递归找老祖宗/// </summary>/// <param name="father"></param>static void GetFather(MvcSiteMap father, List<string> pathList){if (father != null){pathList.Add(string.Format("<a href={0}>{1}</a>", father.Url, father.Title));father.Parent = siteMapList.FirstOrDefault(i => i.ID == father.ParnetID);GetFather(father.Parent, pathList);}}}
添加一个扩展方法
/// <summary>/// 站点地图扩展/// </summary>public static class MvcSiteMapExtensions{public static MvcHtmlString GeneratorSiteMap(this HtmlHelper html, string url){return MvcSiteMapFactory.GeneratorSiteMap(url);}}
前台布局页里调用
<div class="sitemap">@Html.GeneratorSiteMap(Request.Url.AbsolutePath)</div>
运行效果如图
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