SharePoint開發 - 使用Session（代碼修改webconfig）

標籤：sharepoint

SharePoint啟用Session可以使用Powershell，戳這裡；可以修改webconfig。

本篇敘述的重點是通過feature去控制啟用session和關閉session。

建立一個空的SharePoint項目，編寫FeatureEventHandler的FeatureActivated和FeatureDeactivating的處理邏輯

public override void FeatureActivated(SPFeatureReceiverProperties properties)        {            SPWebApplication application = (SPWebApplication)properties.Feature.Parent;            try            {                Config.Update(application);                application.Update();                application.Farm.Services.GetValue<SPWebService>().ApplyWebConfigModifications();            }            catch            {                Config.Restore(application);            }        }        public override void FeatureDeactivating(SPFeatureReceiverProperties properties)        {            SPWebApplication application = (SPWebApplication)properties.Feature.Parent;            try            {                Config.Restore(application);                application.Farm.Services.GetValue<SPWebService>().ApplyWebConfigModifications();            }            catch            {            }        }

這裡Config是關於Session的處理類，因為啟用和禁用Session本質上還是修改IIS網站的配置，所以擷取WebApplication對象，通過代碼修改webconfig內容。

Config類的代碼如下

class Config    {        private static void ExecUpdate(SPWebApplication webApp, string name, string path, string value, Microsoft.SharePoint.Administration.SPWebConfigModification.SPWebConfigModificationType type)        {            SPWebConfigModification modification = new SPWebConfigModification();            modification.Name = name;            modification.Path = path;            modification.Value = value;            modification.Sequence = 0;            modification.Type = type;            modification.Owner = "SP_MIP_Team_EnableSession";            SPWebConfigModification item = modification;            webApp.WebConfigModifications.Add(item);        }        public static void Restore(SPWebApplication webApp)        {            webApp.Update();            List<SPWebConfigModification> configModificationsToRemove = new List<SPWebConfigModification>();            foreach (SPWebConfigModification spWebConfigModification in webApp.WebConfigModifications)            {                if (spWebConfigModification.Owner == "SP_MIP_Team_EnableSession")                {                    configModificationsToRemove.Add(spWebConfigModification);                }            }            foreach (SPWebConfigModification configModification in configModificationsToRemove)            {                webApp.WebConfigModifications.Remove(configModification);            }            webApp.Update();        }        public static void Update(SPWebApplication webApp)        {            string name = null;            string path = null;            string value = null;            name = "add[@name='Session'][@type='System.Web.SessionState.SessionStateModule']";            path = "/configuration/system.web/httpModules";            value = "<add name='Session' type='System.Web.SessionState.SessionStateModule' />";            ExecUpdate(webApp, name, path, value, SPWebConfigModification.SPWebConfigModificationType.EnsureChildNode);            name = "enableSessionState";            path = "/configuration/system.web/pages";            value = "true";            ExecUpdate(webApp, name, path, value, SPWebConfigModification.SPWebConfigModificationType.EnsureAttribute);            name = "add[@name='session'][@type='System.Web.SessionState.SessionStateModule, System.Web, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a']";            path = "/configuration/system.webServer/modules";            value = "<add name='session' type='System.Web.SessionState.SessionStateModule, System.Web, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a' />";            ExecUpdate(webApp, name, path, value, SPWebConfigModification.SPWebConfigModificationType.EnsureChildNode);        }    }

這裡利用SPWebApplication對象來記錄WebConfigModifications，即webconfig的修改，這樣做的好處是可以方便地還原通過代碼修改的webconfig

SharePoint開發 - 使用Session（代碼修改webconfig）