c# - 尝试从 Windows 服务读取 IIS 站点的 web.config 文件

Question

我正在尝试为安装在本地 IIS 上的网站寻找一个特殊的 web.config 文件。我通过 Windows 服务执行此搜索。我执行以下操作:

using (ServerManager serverManager = new ServerManager())
{
    for (int r = 0; r < serverManager.Sites.Count; r++)
    {
        string strSiteName = serverManager.Sites[r].Name;
        ApplicationCollection arrApps = serverManager.Sites[r].Applications;

        for (int a = 0; a < arrApps.Count; a++)
        {
            Microsoft.Web.Administration.Application aa = arrApps[a];
            foreach (VirtualDirectory vd2 in aa.VirtualDirectories)
            {
                string strPhysPath = Environment.ExpandEnvironmentVariables(vd2.PhysicalPath);
                int rr = 0;

                try
                {
                    Configuration cnfg = serverManager.GetWebConfiguration(strSiteName, strPhysPath);
                    if (cnfg != null)
                    {
                        string swww = getWebConfigGeneralParamValue(cnfg, "SpecNodeName");
                    }
                }
                catch
                {
                    //Error
                }

            }
        }

    }

在哪里，

public static string getWebConfigGeneralParamValue(Configuration config, string strParamKey)
{
    string strRes = null;

    try
    {
        ConfigurationSection configSection1 = config.GetSection("configuration");
        if (configSection1 != null)
        {
            ConfigurationElement configGeneralParams = configSection1.GetChildElement("GeneralParams");
            if (configGeneralParams != null)
            {
                ConfigurationElementCollection configCol = configSection1.GetCollection();
                if (configCol != null)
                {
                    strRes = configCol[strParamKey].ToString();
                }
            }
        }
    }
    catch(Exception ex)
    {
        strRes = null;
    }

    return strRes;
}

这个脚本应该识别的 web.config 文件是这样的:

<?xml version="1.0"?>
<!--
  For more information on how to configure your ASP.NET application, please visit
  http://go.microsoft.com/fwlink/?LinkId=169433
  -->
<configuration>
 <!-- regular ASP.NET config stuff -->
 <GeneralParams>
  <param key="SpecNodeName" value="Special Node Value"/>
 </GeneralParams>
</configuration>

但我得到的是 config.GetSection("configuration"); 抛出这个异常:

{"Filename: \\?\C:\inetpub\wwwroot\C:\Users\Dev\Desktop\CSharp\MyTestWebApp\MyTestWebApp\web.config\r\nError: The configuration section 'configuration' cannot be read because it is missing a section declaration\r\n\r\n"}

知道如何让它发挥作用吗？

Answer 1

您不需要定位配置，您需要定位您需要从中获取数据的特定节点。这是例子。

using(ServerManager mgr = ServerManager.OpenRemote("Some-Server")) {

  Configuration config = mgr.GetWebConfiguration("site-name", "/test-application");

  ConfigurationSection appSettingsSection = config.GetSection("appSettings");

  ConfigurationElementCollection appSettingsCollection = appSettingsSection.GetCollection();

  ConfigurationElement addElement = appSettingsCollection.CreateElement("add");
  addElement["key"] = @"NewSetting1";
  addElement["value"] = @"SomeValue";
  appSettingsCollection.Add(addElement);

  serverManager.CommitChanges();
}