• 使用IConfigurationSectionHandler在web.config中增加自定义配置


    一. 场景
        这里仅举一个简单应用的例子,我希望在web.config里面增加网站的基本信息,如:网站名称,网站版本号,是否将网站暂时关闭等。
    二. 基本实现方法
    1. 定义配置节点对应的类:SiteSetting
        代码片段:
        
    namespace Tristan.SeeCustomConfig {
        public class SiteSetting {
            public string SiteName { get; set; }
            public string SiteVersion { get; set; }
            public bool Closed { get; set; }
        }
    }


    2. 实现IConfigurationSectionHandler接口:SiteSettingHandler
       

    namespace Tristan.SeeCustomConfig {
        public class SiteSettingHandler : IConfigurationSectionHandler {
            #region IConfigurationSectionHandler Members

            public object Create(object parent, object configContext, System.Xml.XmlNode section) {
                string siteName = section.SelectSingleNode("siteName").InnerText;
                string siteVersiton = section.SelectSingleNode("siteVersion").InnerText;
                bool closed = Convert.ToBoolean(section.SelectSingleNode("closed").InnerText);
                return new SiteSetting() { SiteName = siteName, SiteVersion = siteVersiton };
            }

            #endregion
        }
    }

    3. 在web.config中进行配置
        在<configSections></configSections>里面增加一个节点:
    <section name="siteSetting" type="Tristan.SeeCustomConfig.SiteSettingHandler"/>

        name:指定我们将要增加的节点名为"siteSetting",接下来会使用它来编写配置节点
        type:指定处理这个配置节点的handler,这个类,我们在前面已经把代码实现了
        然后在<configuration><configuration>里面增加一段xml:
    <siteSetting>
            <siteName>遇见未来</siteName>
            <siteVersion>1.0</siteVersion>
        <closed>false</closed>
        </siteSetting>


    4. 看看效果吧
        随便建一个页面在后台代码里写几行代码做个测试:
        
    namespace Tristan.SeeCustomConfig {
        public partial class _Default : System.Web.UI.Page {
            protected void Page_Load(object sender, EventArgs e) {
                SiteSetting site = ConfigurationManager.GetSection("siteSetting") as SiteSetting;
                Response.Write(site.SiteName + "," + site.SiteVersion + "," + site.Closed.ToString());
            }
        }
    }

        运行,可以看到,我们在web.config中的信息被write出来了。 :)
    三. 使用XML反序列化
    1. 修改SiteSetting
        
    namespace Tristan.SeeCustomConfig {

        [Serializable]
        [XmlRoot("siteSetting")]
        public class SiteSetting {
            [XmlElement("siteName",typeof(string))]
            public string SiteName { get; set; }

            [XmlElement("siteVersion",typeof(string))]
            public string SiteVersion { get; set; }

            [XmlElement("closed",typeof(Boolean))]
            public bool Closed { get; set; }
        }
    }


    2. 修改SiteSettingHandler
       

    namespace Tristan.SeeCustomConfig {
        public class SiteSettingHandler : IConfigurationSectionHandler {
            #region IConfigurationSectionHandler Members

            public object Create(object parent, object configContext, System.Xml.XmlNode section) {
                //string siteName = section.SelectSingleNode("siteName").InnerText;
                //string siteVersiton = section.SelectSingleNode("siteVersion").InnerText;
                //bool closed = Convert.ToBoolean(section.SelectSingleNode("closed").InnerText);
                //return new SiteSetting() { SiteName = siteName, SiteVersion = siteVersiton };

                string typeName = ((XmlElement)section).GetAttribute("type");
                XmlSerializer xz = new XmlSerializer(Type.GetType(typeName));
                using (StringReader sr = new StringReader(section.OuterXml)) {
                    return xz.Deserialize(sr);
                }
            }

            #endregion
        }
    }


    3. 修改web.config中的配置
        
    <siteSetting type="Tristan.SeeCustomConfig.SiteSetting">
            <siteName>遇见未来</siteName>
            <siteVersion>1.0</siteVersion>
        <closed>false</closed>
        </siteSetting>


    4. 再来看看
        不修改测试代码,得到了一样的效果 :)

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  • 原文地址:https://www.cnblogs.com/bdbw2012/p/4817022.html
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