在SharePoint中更改Web.Config时出现问题

在这里，我有一个关于修改特性标记中的Web.Config文件的小问题（SP2010[Web应用程序级特性，默认激活]）

我面临两个奇怪的问题

应用的修改（如添加子节点）在web.config中多次出现

在功能停用时，我删除了对所有者的修改，它得到了修改，但是 这些不会被移除

在功能激活期间，我正在使用以下代码剪报

ModificationEntry[] enries =
{
    new ModificationEntry("someName", "someSection", SPWebConfigModification.SPWebConfigModificationType.EnsureChildNode)
};

    SPWebApplication WebApp = (SPWebApplication)properties.Feature.Parent;
WebApp.WebConfigModifications.Clear();

foreach (ModificationEntry entry in enries)
{
   // CreateModification simply return me SPWebConfigModification
    SPWebConfigModification configModificationItem = CreateModification(entry, properties.Feature.DefinitionId.ToString());
    if (!WebApp.WebConfigModifications.Contains(configModificationItem))
    {
        WebApp.WebConfigModifications.Add(configModificationItem);
    }
}

WebApp.Farm.Services.GetValue<SPWebService>().ApplyWebConfigModifications();
WebApp.Update();

ModificationEntry[]丰富=
{
新的ModificationEntry（“someName”、“someSection”、SPWebConfigModification.SPWebConfigModificationType.EnsureChildNode）
};
SPWebApplication WebApp=（SPWebApplication）properties.Feature.Parent；
WebApp.WebConfigModifications.Clear（）；
foreach（enries中的ModificationEntry条目）
{
//CreateModification只需返回SPWebConfigModification即可
SPWebConfigModificationConfigModificationItem=CreateModification（条目，properties.Feature.DefinitionId.ToString（））；
如果（！WebApp.WebConfigModifications.Contains（configModificationItem））
{
WebApp.WebConfigModifications.Add（configModificationItem）；
}
}
WebApp.Farm.Services.GetValue（）.ApplyWebConfigModifications（）；
WebApp.Update（）；

这就是我在功能停用时所做的

if (webApp != null)
{
    Collection<SPWebConfigModification> collection = webApp.WebConfigModifications;
    int iStartCount = collection.Count;

    // Remove any modifications that were originally created by the owner.
    for (int c = iStartCount - 1; c >= 0; c--)
    {
        SPWebConfigModification configMod = collection[c];
        if (configMod.Owner == properties.Feature.DefinitionId.ToString())
            collection.Remove(configMod);
    }

    // Apply changes only if any items were removed.
    if (iStartCount > collection.Count)
    {
        webApp.Update();
        webApp.Farm.Services.GetValue<SPWebService>().ApplyWebConfigModifications();
    }
}

if（webApp！=null）
{
集合集合=webApp.WebConfigModifications；
int iStartCount=collection.Count；
//删除最初由所有者创建的任何修改。
对于（int c=iStartCount-1；c>=0；c--）
{
SPWebConfigModification configMod=集合[c]；
if（configMod.Owner==properties.Feature.DefinitionId.ToString（））
删除（configMod）；
}
//仅在删除任何项目时应用更改。
如果（IStarCount>collection.Count）
{
webApp.Update（）；
webApp.Farm.Services.GetValue（）.ApplyWebConfigModifications（）；
}
}

---

请评论

该类具有所有必需的属性，并且还包含值

ModificationEntry("someName", "someSection", “Value”, SPWebConfigModification.SPWebConfigModificationType.EnsureChildNode)

---

这不是问题所在，我可以将配置条目添加到web.config文件中。问题如我上面所述。

由于您没有发布CreateModification（）的代码，我不得不猜测，但我认为那里出了问题

SPWebConfigModification的Name属性的值是正确的XPath，这一点很重要。假设这是您正在尝试的：

添加[key='testadd']

这看起来不错，但不是。由于“key”是一个属性，如“name”和其他属性，因此这是正确的方法：

添加[@key='testadd']

这将导致多个条目，使修改无法删除。

公共密封类EnableServiceAdapterFeatureReceiver:SPFeatureReceiver
public sealed class EnableServiceAdapterFeatureReceiver : SPFeatureReceiver
    {
        private string psSiteUrl = "";

    #region Not Implemented

    /// <summary>
    /// Install of feature - not implemented
    /// </summary>
    /// <param name="properties"></param>
    public override void FeatureInstalled(SPFeatureReceiverProperties properties)
    {
    }

    /// <summary>
    /// Uninstall of feature - not implemented
    /// </summary>
    /// <param name="properties"></param>
    public override void FeatureUninstalling(SPFeatureReceiverProperties properties)
    {
    }

    #endregion

    #region Base Class Overrides

    /// <summary>
    /// Activation of feature - adds modifications into web.config and change masterpage.
    /// </summary>
    /// <param name="properties"></param>
    public override void FeatureActivated(SPFeatureReceiverProperties properties)
    {
        using (SPSite site = properties.Feature.Parent as SPSite)
        {
            psSiteUrl = site.Url;

            SPWebApplication webApplication = site.WebApplication;
            if (webApplication == null)
            {
                return;
            }

            Modification(webApplication, site.RootWeb.Title.Trim(), true);

            webApplication.Farm.Services.GetValue<SPWebService>().ApplyWebConfigModifications();
            webApplication.Update();
        }
    }

    /// <summary>
    /// Deactivation of feature - removes modifications from web.config
    /// </summary>
    /// <param name="properties"></param>
    public override void FeatureDeactivating(SPFeatureReceiverProperties properties)
    {

        using (SPSite site = properties.Feature.Parent as SPSite)
        {
            SPWebApplication webApplication = site.WebApplication;
            if (webApplication == null)
            {
                return;
            }

            Modification(webApplication, site.RootWeb.Title.Trim(), false);

            webApplication.Farm.Services.GetValue<SPWebService>().ApplyWebConfigModifications();
            webApplication.Update();
        }
    }

    #endregion

    #region Private Methods

    /// <summary>
    /// Modifies web.config file to add/remove SL Service Adapter support for the application 
    /// </summary>
    /// <param name="webApplication"></param>
    /// <param name="add"></param>
    private void Modification(SPWebApplication webApplication, string webTitle, bool add)
    {
        // system.serviceModel
        SPWebConfigModification svcModelConfigSection = new SPWebConfigModification();
        svcModelConfigSection.Name = "system.serviceModel";
        svcModelConfigSection.Path = "configuration";
        svcModelConfigSection.Value = "" +
                                    "<system.serviceModel>" +
                                    "<bindings>" +
                                    "<netTcpBinding>" +
                                    "<binding name=\"NetTcpBinding_IAdapterService\" closeTimeout=\"00:01:00\" openTimeout=\"00:01:00\" receiveTimeout=\"00:30:00\" sendTimeout=\"00:30:00\" transactionFlow=\"false\" transferMode=\"Buffered\" transactionProtocol=\"OleTransactions\" hostNameComparisonMode=\"StrongWildcard\" listenBacklog=\"10\" maxBufferPoolSize=\"524288\" maxBufferSize=\"65536\" maxConnections=\"10\" maxReceivedMessageSize=\"10240000\">" +
                                    "<readerQuotas maxDepth=\"32\" maxStringContentLength=\"8192\" maxArrayLength=\"16384\" maxBytesPerRead=\"4096\" maxNameTableCharCount=\"16384\" />" +
                                    "<reliableSession ordered=\"true\" inactivityTimeout=\"00:10:00\" enabled=\"false\" />" +
                                    "<security mode=\"Transport\">" +
                                    "<transport clientCredentialType=\"Windows\" protectionLevel=\"None\" />" +
                                    "</security>" +
                                    "</binding>" +
                                    "<binding name=\"tcp_Unsecured\">" +
                                    "<security mode=\"None\" />" +
                                    "</binding>" +
                                    "</netTcpBinding>" +
                                    "</bindings>" +
                                    "<client>" +
                                    "<endpoint address=\"net.tcp://slrsptm03.curie.sl.se/AdapterService/AdapterService\" binding=\"netTcpBinding\" bindingConfiguration=\"tcp_Unsecured\" contract=\"TDIWcfService.IAdapterService\" name=\"NetTcpBinding_IAdapterService\">" +
                                    "</endpoint>" +
                                    "<endpoint address=\"net.tcp://slrsptm04.curie.sl.se:8890/slHafas\" binding=\"netTcpBinding\" bindingConfiguration=\"tcp_Unsecured\" contract=\"TDIWcfService.IAdapterService\" name=\"HafasControllerService\" />" +
                                    "<!-- Endpoint adress for SL Client to MobileAdapter.ServiceController WCF service-->" +
                                    "<endpoint address=\"net.tcp://slrsptm04.curie.sl.se:8889/slMobile\" binding=\"netTcpBinding\" bindingConfiguration=\"tcp_Unsecured\" contract=\"TDIWcfService.IAdapterService\" name=\"MobileControllerService\" />" +
                                    "</client>" +
                                    "<diagnostics>" +
                                    "<!-- Enable Message Logging here. -->" +
                                    "<!-- log all messages received or sent at the transport or service model levels -->" +
                                    "<messageLogging logEntireMessage=\"true\" maxMessagesToLog=\"65000\" logMessagesAtServiceLevel=\"true\" logMalformedMessages=\"true\" logMessagesAtTransportLevel=\"true\" />" +
                                    "</diagnostics>" +
                                    "</system.serviceModel>";
        svcModelConfigSection.Type = SPWebConfigModification.SPWebConfigModificationType.EnsureChildNode;

        // appSettings
        SPWebConfigModification appSettingsConfigSection = new SPWebConfigModification();
        appSettingsConfigSection.Name = "appSettings";
        appSettingsConfigSection.Path = "configuration";
        appSettingsConfigSection.Value = "" +
                                    "<appSettings>" +
                                    "<add key=\"MainUrl\" value=\"" + psSiteUrl + "/Planeradtrafik/default.aspx\" />" +
                                    "<add key=\"TDIUrl\" value=\"" + psSiteUrl + "/TDI/default.aspx\" />" +
                                    "<add key=\"HAFASUrl\" value=\"" + psSiteUrl + "/HAFAS/default.aspx\" />" +
                                    "<add key=\"MOBILEUrl\" value=\"" + psSiteUrl + "/MOBILE/default.aspx\" />" +
                                    "<add key=\"SessionTimeOut\" value=\"10\" />" +
                                    "<add key=\"HitPageUrl\" value=\"" + psSiteUrl + "/hitpage.html\" />" +
                                    "<add key=\"SPGroup\" value=\"" + webTitle + " Members;" + webTitle + " Visitors\" />" +
                                    "</appSettings>";
        appSettingsConfigSection.Type = SPWebConfigModification.SPWebConfigModificationType.EnsureChildNode;

        // connectionStrings
        SPWebConfigModification connStringConfigSection = new SPWebConfigModification();
        connStringConfigSection.Name = "connectionStrings";
        connStringConfigSection.Path = "configuration";
        connStringConfigSection.Value = "" +
                                    "<connectionStrings>" +
                                    "<add name=\"SL_Portal_DBConnectionString\" connectionString=\"Data Source=.;Initial Catalog=SL_Portal_DB;Integrated Security=false;user id=sl_portal_db_user;password=[password]\" providerName=\"System.Data.SqlClient\" />" +
                                    "</connectionStrings>";
        connStringConfigSection.Type = SPWebConfigModification.SPWebConfigModificationType.EnsureChildNode;

        // httpModules
        SPWebConfigModification httpModuleConfigSection = new SPWebConfigModification();
        httpModuleConfigSection.Name = "add[@name='Session']";
        httpModuleConfigSection.Path = "configuration/system.web/httpModules";
        httpModuleConfigSection.Value =
            "<add name=\"Session\" type=\"System.Web.SessionState.SessionStateModule\"/>";
        httpModuleConfigSection.Type = SPWebConfigModification.SPWebConfigModificationType.EnsureChildNode;

        if (add)
        {
            webApplication.WebConfigModifications.Add(svcModelConfigSection);
            webApplication.WebConfigModifications.Add(appSettingsConfigSection);
            webApplication.WebConfigModifications.Add(connStringConfigSection);
            webApplication.WebConfigModifications.Add(httpModuleConfigSection);
        }
        else
        {
            webApplication.WebConfigModifications.Add(httpModuleConfigSection);
            webApplication.WebConfigModifications.Remove(connStringConfigSection);
            webApplication.WebConfigModifications.Remove(appSettingsConfigSection);
            webApplication.WebConfigModifications.Remove(svcModelConfigSection);
        }
    }

    #endregion
}

{
私有字符串psSiteUrl=“”；
#未实施的区域
/// 
///安装功能-未实现
/// 
/// 
已安装公共覆盖无效功能（SPFeatureReceiverProperties）
{
}
/// 
///卸载功能-未实现
/// 
/// 
公共覆盖无效功能卸载（SPFeatureReceiverProperties）
{
}
#端区
#区域基类重写
/// 
///激活功能-将修改添加到web.config并更改母版页。
/// 
/// 
公共覆盖无效功能已激活（SPFeatureReceiverProperties）
{
使用（SPSite站点=properties.Feature.Parent作为SPSite）
{
psSiteUrl=site.Url；
SPWebApplication webApplication=site.webApplication；
if（webApplication==null）
{
返回；
}
修改（webApplication，site.RootWeb.Title.Trim（），true）；
webApplication.Farm.Services.GetValue（）.ApplyWebConfigModifications（）；
webApplication.Update（）；
}
}
/// 
///停用功能-从web.config中删除修改
/// 
/// 
公共覆盖无效功能停用（SPFeatureReceiverProperties）
{
使用（SPSite站点=properties.Feature.Parent作为SPSite）
{
SPWebApplication webApplication=site.webApplication；
if（webApplication==null）
{
返回；
}
修改（webApplication，site.RootWeb.Title.Trim（），false）；
webApplication.Farm.Services.GetValue（）.ApplyWebConfigModifications（）；
webApplication.Update（）；
}
}
#端区
#区域私有方法
/// 
///修改web.config文件以添加/删除应用程序的SL服务适配器支持
/// 
/// 
/// 
私有无效修改（SPWebApplication webApplication、字符串webTitle、布尔添加）
{
//system.serviceModel
SPWebConfigModification svcModelConfigSection=新建SPWebConfigModification（）；
svcModelConfigSection.Name=“system.serviceModel”；
svcModelConfigSection.Path=“配置”；
svcModelConfigSection.Value=“”+
"" +
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