YZR.Data webconfig端的配置

这里记录一下,YZR.Data对系统兼容数据库在webconfig的配置处理.

<?xml version="1.0" encoding="utf-8"?>

<!--
  有关如何配置 ASP.NET 应用程序的详细信息，请访问
  http://go.microsoft.com/fwlink/?LinkId=169433
  -->

<configuration>
  <configSections>
    <section name="YZRSetting" type="YZR.Config.YZRSetting, YZR.Config" />
  </configSections>

  <connectionStrings>
    <add name="connString" connectionString="Data Source=127.0.0.1/orcl;Persist Security Info=True;User ID=YZR;Password=677714" providerName="YZROracle"/>
  </connectionStrings>
  <system.web>
    <compilation debug="true" targetFramework="4.5" />
    <httpRuntime targetFramework="4.5" />
  </system.web>
  <YZRSetting>
    <base title="巴夫&amp;巴夫" subTitle="YZR的博客" url="http://www.cnblogs.com/Francis_YZR"></base>
    <strConn>
      <!--<file name="headPhoto" path="upload/image/headPhoto" size="200"></file>
      <file name="album" path="upload/image/album" size="1024"></file>-->
      <conn Rname="Oracle" Rvalue="YZROracle"></conn>
      <conn Rname="Sqlserver" Rvalue="YZRSqlserver"></conn>
    </strConn>
  </YZRSetting>
</configuration>

一开始的时候,我的做法是在appStart.cs中通过配置"RAtion"或者"RMtion"来决定采用Oracle,还是Sqlserver,但这样并不明智,因为需要改动项目代码,所以,我就想把决定数据库驱动的时机转移webconfig.通过providerName来指定数据库驱动.

如下:

<connectionStrings>
    <add name="connString" 
         connectionString="Data Source=127.0.0.1/orcl;Persist Security Info=True;User ID=YZR;Password=677714" 
         providerName="YZROracle"/>
  </connectionStrings>

然后,providerName提供出来之后,并未知道其有多少选择值,而且我希望也把它也配置起来,可以实现手动配置和任意添加删除,所以,我在wenconfig文件中加了自定义节点.

如下:

<YZRSetting>
    <base title="巴夫&amp;巴夫" subTitle="YZR的博客" url="http://www.cnblogs.com/Francis_YZR"></base>
    <strConn>
      <!--<file name="headPhoto" path="upload/image/headPhoto" size="200"></file>
      <file name="album" path="upload/image/album" size="1024"></file>-->
      <conn Rname="Oracle" Rvalue="YZROracle"></conn>
      <conn Rname="Sqlserver" Rvalue="YZRSqlserver"></conn>
    </strConn>
  </YZRSetting>

这样的目的很明确,就是providerName的值是通过Rvalue决定的.

下面贴上YZRSetting.cs

namespace YZR.Config  //好好研究一下ConfigurationSection
{
    using System.Configuration;
    public class YZRSetting : ConfigurationSection
    {
        //base节点
        [ConfigurationProperty("base")]
        public baseSection BaseSetting { get { return (baseSection)base["base"]; } }

        //fileUpload节点
        [ConfigurationProperty("strConn")]
        public strConnSection StrConnSetting { get { return (strConnSection)base["strConn"]; } }
    }

    public class baseSection : ConfigurationElement
    {
        //title属性
        [ConfigurationProperty("title", IsKey = true, IsRequired = true)]
        public string title { get { return (string)base["title"]; } set { title = value; } }
        //subTitle属性
        [ConfigurationProperty("subTitle", IsRequired = false, DefaultValue = "")]
        public string subTitle { get { return (string)base["subTitle"]; } set { subTitle = value; } }
        //url属性
        [ConfigurationProperty("url", IsRequired = true)]
        public string url { get { return (string)base["url"]; } set { url = value; } }
    }

    [ConfigurationCollection(typeof(connSection), AddItemName = "conn")]//子元素的声明conn
    public class strConnSection : ConfigurationElementCollection
    {
        protected override ConfigurationElement CreateNewElement()
        {
            return new connSection();
        }

        protected override object GetElementKey(ConfigurationElement element)
        {
            return ((connSection)element).Rname;
        }

        public connSection this[int index]
        {
            get { return (connSection)base.BaseGet(index); }
        }

        new public connSection this[string name]
        {
            get { return (connSection)base.BaseGet(name); }
        }
    }

    public class connSection : ConfigurationElement
    {
        //name属性
        [ConfigurationProperty("Rname", IsKey = true, IsRequired = true)]
        public string Rname { get { return (string)this["Rname"]; } set { Rname = value; } }
        //value属性
        [ConfigurationProperty("Rvalue", IsRequired = true)]
        public string Rvalue { get { return (string)this["Rvalue"]; } set { Rvalue = value; } }
        ////path属性
        //[ConfigurationProperty("path", IsRequired = true)]
        //public string path { get { return (string)this["path"]; } set { path = value; } }
        ////size属性
        //[ConfigurationProperty("size", IsRequired = true, DefaultValue = 1024)]
        //public int size { get { return (int)this["size"]; } set { size = value; } }
    }

    public class WebSettingManager
    {
        public static YZRSetting WebSetting = (YZRSetting)System.Configuration.ConfigurationManager.GetSection("YZRSetting");
    }
    /*
     * 
     *      WebSettingManager.WebSetting.BaseSetting.title + " - " + WebSettingManager.WebSetting.BaseSetting.subTitle;
            WebSettingManager.WebSetting.BaseSetting.title;
            WebSettingManager.WebSetting.BaseSetting.subTitle;
            WebSettingManager.WebSetting.BaseSetting.url;

            WebSettingManager.WebSetting.strConnSetting;//数组的形式
     */
}

在appStart.cs的处理如下:

            string Title = WebSettingManager.WebSetting.BaseSetting.title + " - " + WebSettingManager.WebSetting.BaseSetting.subTitle;
            int count = WebSettingManager.WebSetting.StrConnSetting.Count;
            List<string> list = new List<string>();
            for (int i = 0; i < count; i++)
            {
                connSection section=WebSettingManager.WebSetting.StrConnSetting[i];
                list.Add(section.Rvalue);
            }
            //string strConn = System.Web.Configuration.WebConfigurationManager.ConnectionStrings["default"].ConnectionString;
            //string connString = System.Configuration.ConfigurationManager.ConnectionStrings["connString"].ToString();
            string ProviderName = System.Configuration.ConfigurationManager.ConnectionStrings["connString"].ProviderName;
            string path = AppDomain.CurrentDomain.BaseDirectory;
            Assembly ass = Assembly.LoadFrom(path + "bin\YZR.Data.dll");
            //Assembly ass = Assembly.Load("YZR.Entity");
            //TODO:Oracle数据库使用RAtion,Sqlserver使用RMotion
            Type type = null;
            for (int i = 0; i < list.Count; i++)
            {
                if (list[i].Equals(ProviderName, StringComparison.OrdinalIgnoreCase))
                {
                    type = ass.GetType("YZR.Data." + "RAction");
                    break;
                }
                if (list[i].Equals(ProviderName, StringComparison.OrdinalIgnoreCase))
                {
                    type = ass.GetType("YZR.Data." + "RMotion");
                    break;
                }
                else
                    throw new Exception("配置节点出错");
            }

END!