Sharepoint 使用SPWebConfigModification添加HTTPHandler

我正在使用下面的代码通过下面的代码添加几个HttpHandler（用于Telerik控件）

            SPWebConfigModification webConfig = null;

            webConfig = new SPWebConfigModification();
            webConfig.Owner = featureID;
            webConfig.Type = SPWebConfigModification.SPWebConfigModificationType.EnsureChildNode;
            webConfig.Path = "/configuration/system.web/httpHandlers";
            webConfig.Name = "add[@path='Telerik.ReportViewer.axd']";
            webConfig.Value = "<add verb=\"*\" path=\"Telerik.ReportViewer.axd\" type = \"Telerik.ReportViewer.WebForms.HttpHandler, Telerik.ReportViewer.WebForms, Version=4.2.10.1110, Culture=neutral, PublicKeyToken=a9d7983dfcc261be\" />";
            webApp.WebConfigModifications.Add(webConfig);

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

            webConfig = new SPWebConfigModification();
            webConfig.Owner = featureID;
            webConfig.Type = SPWebConfigModification.SPWebConfigModificationType.EnsureChildNode;
            webConfig.Path = "/configuration/system.web/httpHandlers";
            webConfig.Name = "add[@path='ChartImage.axd']";
            webConfig.Value = "<add path=\"ChartImage.axd\" verb=\"*\" type=\"Telerik.Web.UI.ChartHttpHandler, Telerik.Web.UI, Version=2010.2.826.35, Culture=neutral, PublicKeyToken=121fae78165ba3d4\" validate=\"false\" />";
            webApp.WebConfigModifications.Add(webConfig);

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

            webConfig = new SPWebConfigModification();
            webConfig.Owner = featureID;
            webConfig.Type = SPWebConfigModification.SPWebConfigModificationType.EnsureChildNode;
            webConfig.Path = "/configuration/system.web/httpHandlers";
            webConfig.Name = "add[@path='Telerik.Web.UI.WebResource.axd']";
            webConfig.Value = "<add path=\"Telerik.Web.UI.WebResource.axd\" verb=\"*\" type=\"Telerik.Web.UI.WebResource, Telerik.Web.UI, Version=2010.2.826.35, Culture=neutral, PublicKeyToken=121fae78165ba3d4\" validate=\"false\"/>";
            webApp.WebConfigModifications.Add(webConfig);

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

            webConfig = new SPWebConfigModification();
            webConfig.Owner = featureID;
            webConfig.Type = SPWebConfigModification.SPWebConfigModificationType.EnsureChildNode;
            webConfig.Path = "/configuration/system.web/httpHandlers";
            webConfig.Name = "remove[@path='Telerik.ReportViewer.axd']";
            webConfig.Value = "<add verb=\"*\" path=\"Telerik.ReportViewer.axd\" type = \"Telerik.ReportViewer.WebForms.HttpHandler, Telerik.ReportViewer.WebForms, Version=4.2.10.1110, Culture=neutral, PublicKeyToken=a9d7983dfcc261be\" />";
            webApp.WebConfigModifications.Add(webConfig);

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

            webConfig = new SPWebConfigModification();
            webConfig.Owner = featureID;
            webConfig.Type = SPWebConfigModification.SPWebConfigModificationType.EnsureChildNode;
            webConfig.Path = "/configuration/system.web/httpHandlers";
            webConfig.Name = "remove[@path='Telerik.ReportViewer.axd_*']";
            webConfig.Value = "<add name=\"Telerik.ReportViewer.axd_*\" path=\"Telerik.ReportViewer.axd\" verb=\"*\" type=\"Telerik.ReportViewer.WebForms.HttpHandler, Telerik.ReportViewer.WebForms, Version=4.2.10.1110, Culture=neutral, PublicKeyToken=a9d7983dfcc261be\" preCondition=\"integratedMode,runtimeVersionv2.0\" />";
            webApp.WebConfigModifications.Add(webConfig);

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

spwebconfig修改webConfig=null；
webConfig=新的SPWebConfigModification（）；
webConfig.Owner=featureID；
webConfig.Type=SPWebConfigModification.SPWebConfigModificationType.EnsureChildNode；
webConfig.Path=“/configuration/system.web/httpHandlers”；
webConfig.Name=“添加[@path='Telerik.ReportViewer.axd']”；
webConfig.Value=“”；
webApp.WebConfigModifications.Add（webConfig）；
webApp.Farm.Services.GetValue（）.ApplyWebConfigModifications（）；
webApp.Update（）；
webConfig=新的SPWebConfigModification（）；
webConfig.Owner=featureID；
webConfig.Type=SPWebConfigModification.SPWebConfigModificationType.EnsureChildNode；
webConfig.Path=“/configuration/system.web/httpHandlers”；
webConfig.Name=“添加[@path='ChartImage.axd']”；
webConfig.Value=“”；
webApp.WebConfigModifications.Add（webConfig）；
webApp.Farm.Services.GetValue（）.ApplyWebConfigModifications（）；
webApp.Update（）；
webConfig=新的SPWebConfigModification（）；
webConfig.Owner=featureID；
webConfig.Type=SPWebConfigModification.SPWebConfigModificationType.EnsureChildNode；
webConfig.Path=“/configuration/system.web/httpHandlers”；
webConfig.Name=“添加[@path='Telerik.Web.UI.WebResource.axd']”；
webConfig.Value=“”；
webApp.WebConfigModifications.Add（webConfig）；
webApp.Farm.Services.GetValue（）.ApplyWebConfigModifications（）；
webApp.Update（）；
webConfig=新的SPWebConfigModification（）；
webConfig.Owner=featureID；
webConfig.Type=SPWebConfigModification.SPWebConfigModificationType.EnsureChildNode；
webConfig.Path=“/configuration/system.web/httpHandlers”；
webConfig.Name=“remove[@path='Telerik.ReportViewer.axd']”；
webConfig.Value=“”；
webApp.WebConfigModifications.Add（webConfig）；
webApp.Farm.Services.GetValue（）.ApplyWebConfigModifications（）；
webApp.Update（）；
webConfig=新的SPWebConfigModification（）；
webConfig.Owner=featureID；
webConfig.Type=SPWebConfigModification.SPWebConfigModificationType.EnsureChildNode；
webConfig.Path=“/configuration/system.web/httpHandlers”；
webConfig.Name=“remove[@path='Telerik.ReportViewer.axd_*'”；
webConfig.Value=“”；
webApp.WebConfigModifications.Add（webConfig）；
webApp.Farm.Services.GetValue（）.ApplyWebConfigModifications（）；
webApp.Update（）；

但我得到的错误是

“”是无效的表达式

---

这不是很详细。有什么想法吗？

好的，我已经修好了。错误出现在

applyWebConfigModifications（）

行。它保存了一些以前错误的web.config更改条目。召唤

webApp.WebConfigModifications.Clear()

---

修复了该问题。

在哪一行发生异常？想法-是的，检查异常的行号。或者，将visual studio连接到W3WP进程，然后再次尝试激活您的功能。错误出现在我使用ApplyWebConfigModifications（）应用web配置更改的行中。