我已经尝试了有关此问题的所有方法，但找不到错误。
我网站的结构是这样的
会议（SiteCollection、RootWeb）
1.1 BoardOFDirectors（子网站）
1.1.1 20120101（子网站）
1.1.2 20120202（子网站）
在会议内部有一个称为会议的列表。在每个子站点内都有一个名为议程点的列表，其中包含文档集。
我创建了一个自定义操作来将议程点从一个会议站点复制到下一个会议站点。
我在 CopyTo 方法中遇到以下异常。如您所见，我在任何地方都设置了 allowunsafeupdates=true 。我错过了什么？？
目前不允许对 GET 请求进行更新。要允许对 GET 进行更新，请在 SPWeb 上设置“AllowUnsafeUpdates”属性。
protected void Page_Load(object sender, EventArgs e)
{
Logger.LogDebug("CopyAgendaPointToNextMeetingWithAttachments", "Page_Load(object sender, EventArgs e)", "BEGIN");
string source = Request.Url.ToString();
string state = Request.GetQueryStringValue(MeetingsCommon.Constants.QUERYSTRINGPARAMETER_STATE_NAME);
string statusMessage = Request.GetQueryStringValue(MeetingsCommon.Constants.QUERYSTRINGPARAMETER_MESSAGE_NAME);
this.litMessage.Text = statusMessage;
if (!string.IsNullOrEmpty(state))
return;
using (SPLongOperation operation = new SPLongOperation(this.Page))
{
SPWeb currentWeb = SPContext.Current.Web;
SPSite currentSite = currentWeb.Site;
try
{
operation.Begin();
currentSite.WebApplication.FormDigestSettings.Enabled = false;
currentSite.RootWeb.AllowUnsafeUpdates = true;
currentWeb.AllowUnsafeUpdates = true;
string listID = Request.QueryString[MeetingsCommon.Constants.QUERYSTRINGPARAMETER_LISTID_NAME];
string listItemID = Request.QueryString[MeetingsCommon.Constants.QUERYSTRINGPARAMETER_ID_NAME];
string webappUrl = currentSite.WebApplication.GetResponseUri(currentSite.Zone).ToString();
source = source.Replace(webappUrl.ToLower(), currentWeb.Url.ToLower() + "/");
SPSecurity.RunWithElevatedPrivileges(() =>
{
SPList currentList = currentWeb.GetSafeListByGuid(new Guid(listID));
SPListItem item = currentList.GetItemById(Convert.ToInt32(listItemID));
SPWeb siteCollectionRootWeb = currentWeb.ParentWeb.ParentWeb.Site.RootWeb;
string type = currentWeb.Name.Substring(0, 2);
SPList listMeetingsRoot = siteCollectionRootWeb.GetSafeListByName(Meetings.Common.Constants.LISTS_MEETINGCALENDAR_NAME);
SPQuery query = new SPQuery();
query.Query = string.Concat(
"<Where>",
"<And>",
"<BeginsWith>",
"<FieldRef Name='" + Meetings.Common.Constants.FIELDS_TEXT_TITLE_NAME + "' />",
"<Value Type='Text'>" + type + "</Value>",
"</BeginsWith>",
"<Gt>",
" <FieldRef Name='" + Meetings.Common.Constants.FIELDS_EVENTDATE_NAME + "' />",
"<Value Type='DateTime'><Today /></Value>",
"</Gt>",
"</And>",
"</Where>");
query.RowLimit = 1;
SPListItemCollection itemsMeetings = listMeetingsRoot.GetItems(query);
if (itemsMeetings.Count == 1)
{
SPFieldUrlValue value = new SPFieldUrlValue(itemsMeetings[0][Meetings.Common.Constants.FIELDS_MEETINGSITEURL_NAME].ToString());
string urlOfNextMeetingSite = value.Url;
using (SPSite nextMeetingSite = new SPSite(urlOfNextMeetingSite))
{
using (SPWeb nextMeetingWeb = nextMeetingSite.OpenWeb())
{
try
{
nextMeetingSite.RootWeb.AllowUnsafeUpdates = true;
nextMeetingWeb.ParentWeb.AllowUnsafeUpdates = true;
nextMeetingWeb.AllowUnsafeUpdates = true;
SPList targetList = nextMeetingWeb.GetSafeListByName(MeetingsCommon.Constants.LISTS_AGENDAPOINTS_NAME);
SPDocumentLibrary targetDocumentLibrary = nextMeetingWeb.GetSafeDocumentLibraryByName(MeetingsCommon.Constants.LISTS_AGENDAPOINTS_NAME);
SPContentTypeId targetCTId = targetList.ContentTypes.BestMatch(new SPContentTypeId(MeetingsCommon.Constants.CONTENTTYPES_AGENDAPOINT_ID));
string id = itemsMeetings[0]["UniqueId"].ToString();
DocumentSet sourceDocumentSet = DocumentSet.GetDocumentSet(item.Folder);
DocumentSet targetDocumentSet = null;
if (sourceDocumentSet != null)
{
targetDocumentSet = sourceDocumentSet.CopyTo(targetList.RootFolder, targetCTId);
SPListItem destinationListItem = targetDocumentSet.Item;
destinationListItem[MeetingsCommon.Constants.FIELDS_AGENDAPOINTSRECURRENT_NAME] = "False";
destinationListItem[MeetingsCommon.Constants.FIELDS_AGENDAPOINTSCOPYATTACHMENTS_NAME] = "False";
destinationListItem.Update();
statusMessage = string.Format(HelperFunctions.GetResourceString(MeetingsCommon.Constants.RESOURCES_FILE_NAME, "Message_CopyAgendaPoint"), nextMeetingWeb.Url, nextMeetingWeb.Name);
}
}
catch (Exception)
{
throw;
}
finally
{
nextMeetingWeb.AllowUnsafeUpdates = false;
nextMeetingWeb.ParentWeb.AllowUnsafeUpdates = false;
nextMeetingSite.RootWeb.AllowUnsafeUpdates = false;
}
}
}
}
else
{
statusMessage = HelperFunctions.GetResourceString(MeetingsCommon.Constants.RESOURCES_FILE_NAME, "Message_CopyAgendaPointNoNextSiteFound");
}
});
}
catch (Exception ex)
{
Logger.LogError("CopyAgendaPointToNextMeetingWithAttachments", "Page_Load(object sender, EventArgs e)", ex);
statusMessage = ex.Message;
}
finally
{
statusMessage = HttpUtility.UrlEncode(statusMessage);
currentWeb.AllowUnsafeUpdates = false;
currentSite.RootWeb.AllowUnsafeUpdates = false;
currentSite.WebApplication.FormDigestSettings.Enabled = true;
operation.End(source, Microsoft.SharePoint.Utilities.SPRedirectFlags.DoNotEncodeUrl, HttpContext.Current, "&state=completed&message=" + statusMessage);
}
Logger.LogDebug("CopyAgendaPointToNextMeetingWithAttachments", "Page_Load(object sender, EventArgs e)", "END");
}
}