sharepoint2010如何根据用户登录名获取有权限的列表记录？

大家都知道在sharepoint2010登录，系统自动根据登录用户给出有权限的列表记录？但是有些业务场景用户不能登录，如对外提供接口给业务系统调用列表数据，需要根据不同用户返回不同的列表记录。此时需要考虑如何根据登录名获取有权限的列表记录。下面我介绍2个方法来进行

1、通过DoesUserHavePermissions来获取有权限的记录

//申明集合
            List<EGNewsEntity> EGNewsEntityList = new List<EGNewsEntity>();
            try
            {
                //得到列表                
                SPList m_objList = web.Lists[listName];  
                //查询                
                SPQuery query = new SPQuery();
                query.Query = strWhere;
                //查询的字段                
                if (ViewField.Length > 0)
                {
                    query.ViewFields = BuildViewFields(ViewField);
                }
                SPListItemCollection m_objListItemColl = m_objList.GetItems(query);
                //根据当前用户判断是否有权限的记录条数
                foreach (SPListItem item in m_objListItemColl)
                {
                    //判断用户是否有有改记录的阅读权限(查看权限）
                    if (item.DoesUserHavePermissions(user, SPBasePermissions.ViewListItems))
                    {
                        //申明实体类
                        EGNewsEntity entity = new EGNewsEntity();
                        //赋值
                        entity.ID = item["ID"] == null ? string.Empty : item["ID"].ToString();
                        entity.Title = item["Title"] == null ? string.Empty : item["Title"].ToString();
                        entity.CreateTime = Convert.ToDateTime(item["ApplyDateTime"]);
                        entity.Content = item["Content"] == null ? string.Empty : item["Content"].ToString();
                        //加入集合
                        EGNewsEntityList.Add(entity);
                    }
                }
            }
            catch
            {
            }
            //
            return EGNewsEntityList;
        }

2、通过UserToken来获取有权限的记录

 //申明集合
            DataTable table =null;
            #region//账号是否存在
            if (web.AllUsers[UserAccount] != null)
            {
                //获取userToken
                SPUserToken userToken = web.AllUsers[UserAccount].UserToken;
                #region//***************************获取token,模拟当前账号登陆
                using (SPSite owSite = new SPSite(siteUrl, userToken))
                {
                    #region //模拟当前登陆用户打开站点
                    using (SPWeb owWeb = owSite.OpenWeb(webUrl))
                    {
                        try
                        {
                            #region//列表名称 
                            string listName = EGNewsConfig.NewsListName;
                            //如果是新闻
                            if (NewsType == EGNewsEntity.NewsType.News)
                            {
                                listName = EGNewsConfig.NewsListName;
                            }
                            //如果是公告
                            if (NewsType == EGNewsEntity.NewsType.Notice)
                            {
                                listName = EGNewsConfig.NoticeListName;
                            }
                            #endregion
                            //如果列表名称
                            if (!string.IsNullOrEmpty(listName))
                            {
                                #region//查询条件
                                string strWhere = "<OrderBy><FieldRef Name=\"ApplyDateTime\" Ascending=\"False\" /></OrderBy>";
                                //如果有关键字
                                if (!string.IsNullOrEmpty(Key))
                                {
                                    strWhere = "<Where><Eq><FieldRef Name=\"Title\" /><Value Type=\"Text\">" + Key + "</Value></Eq></Where>" + strWhere;
                                }
                                #endregion
                                //申明dataTable
                                table = MakeNamesTable();

                                #region//获取总的记录
                                SPQuery query = new SPQuery();
                                query.Query = strWhere;
                                query.ViewFields = BuildViewFields(new string[]{"Title"});
                                totalCount = owWeb.Lists[listName].GetItems(query).Count;
                                #endregion
                                //
                                int _totalcount = 0;
                                //得到记录
                                SPListItemCollection itemCollection = GetPageList(owWeb, listName, PageSize, PageIndex, out _totalcount, strWhere, new string[] { "ID", "Title", "ApplyDateTime", "Content" });
                                
                                #region//循环
                                foreach (SPListItem item in itemCollection)
                                {
                                    //datatable增加一条记录
                                    DataRow row = table.NewRow();
                                    //ID号码
                                    row["ID"] = item["ID"];
                                    //赋值标题
                                    row["Title"] = item["Title"];
                                    //内容
                                    row["Content"] = item["Content"];
                                    //赋值创建时间
                                    row["CreateTime"] = item["ApplyDateTime"];
                                    //增加记录
                                    table.Rows.Add(row);
                                }
                                #endregion
                            }

                        }
                        catch(Exception ex)
                        {
                            errMsg = ex.Message;
                        }
                    }
                    #endregion
                }
                #endregion
            }
            #endregion
            //
            return table;