T-DAS/Epost.BLL/HistoryXmlBLL.cs

using Epost.Common;
using Epost.DAL;
using Epost.Model;
using System;
using System.Collections.Generic;
using System.Data;
using System.IO;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Xml;

namespace Epost.BLL
{
    public class HistoryXmlBLL
    {
        DB db = new DB();

        HistoryDataDAL dal = new HistoryDataDAL();
        #region 创建xml(历史数据在页面加载的时候有)
        public bool DataXML(List<string> table, int days)
        {
            for (int i = 0; i < table.Count() - 1; i++)
            {
                for (int j = table.Count() - 1; j > i; j--)
                {
                    if (table[j].Equals(table[i]))
                    {
                        table.RemoveAt(j);
                    }
                }
            }
            //保存数据到xml格式中
            string datatime = DateTime.Now.ToString();
            //主目录
            //string sql_xml = System.IO.Directory.GetCurrentDirectory() + "\\" + "delete" + ".xml";
            //sql_xml = @"E:\DSL_DPS - 副本\delete.xml";
            //【改变】
            string sql_xml = System.AppDomain.CurrentDomain.BaseDirectory + "\\Log\\delete.xml";
            //string sql_xml = @db.path_dexml;
            //public static string sqlcon = ConfigurationManager.ConnectionStrings["path"].ToString();
            XmlDocument xmldoc = new XmlDocument();
            XmlNode node = xmldoc.CreateXmlDeclaration("1.0", "utf-8", "");
            xmldoc.AppendChild(node);

            if (!File.Exists(sql_xml))
            {
                //根节点
                XmlElement root = xmldoc.CreateElement("Delete");
                xmldoc.AppendChild(root);

                //一级属性
                for (int i = 0; i < table.Count; i++)
                {
                    //子节点
                    XmlElement delete = xmldoc.CreateElement("delete");
                    root.AppendChild(delete);
                    XmlAttribute name = xmldoc.CreateAttribute("name");
                    delete.Attributes.Append(name);
                    XmlAttribute day = xmldoc.CreateAttribute("days");
                    delete.Attributes.Append(day);
                    name.Value = table[i];//表名 
                    day.Value = Convert.ToString(days);//时间名
                    delete.InnerText = datatime;//当前时间
                }
                xmldoc.Save(sql_xml);
            }
            else
            {
                xmldoc.Load(sql_xml);
                XmlNode orderid2 = xmldoc.SelectSingleNode("Delete");
                //获取属性
                var list = orderid2.ChildNodes;
                for (int i = 0; i < list.Count; i++)
                {
                    for (int j = 0; j < table.Count; j++)
                    {

                        if (list[i].Attributes["name"].Value == table[j])
                        {
                            list[i].Attributes["days"].Value = Convert.ToString(days);
                            list[i].InnerText = datatime;
                            table.RemoveAt(j);
                        }
                        else
                        {

                        }
                    }

                }

                for (int j = 0; j < table.Count; j++)
                {
                    XmlNode root = xmldoc.SelectSingleNode("Delete");
                    XmlElement delete = xmldoc.CreateElement("delete");
                    root.AppendChild(delete);
                    XmlAttribute name = xmldoc.CreateAttribute("name");
                    delete.Attributes.Append(name);
                    XmlAttribute day = xmldoc.CreateAttribute("days");
                    delete.Attributes.Append(day);
                    name.Value = table[j];//表名
                    day.Value = Convert.ToString(days);//时间名
                    delete.InnerText = datatime;//当前时间


                }


                xmldoc.Save(sql_xml);


            }
            bool t = true;
            return t;
        }
        #endregion

        #region 加载xml文件(数据库历史数据)
        public bool Load()
        {
            //加载xml数据，是否有
            string datatime = DateTime.Now.ToString();
            //【改变】
            string day_xml = System.AppDomain.CurrentDomain.BaseDirectory + "\\Log\\delete.xml";
            //string day_xml = @db.path_dexml;
            //string s = System.Diagnostics.Process.GetCurrentProcess().MainModule.FileName;

            XmlDocument xmldoc = new XmlDocument();
            try
            {
                xmldoc.Load(day_xml);
                //查询xml文件中时间和天数和今天的对比，如果大于这执行删除语句
                XmlNode orderid2 = xmldoc.SelectSingleNode("Delete");
                for (int i = 0; i < orderid2.ChildNodes.Count; i++)
                {
                    //循环每一个节点
                    string name = orderid2.ChildNodes[i].Attributes["name"].Value;//表名
                    string day = orderid2.ChildNodes[i].Attributes["days"].Value;//时间
                    string innerday = orderid2.ChildNodes[i].InnerText;//改的时间
                    DateTime dt1 = Convert.ToDateTime(innerday);
                    dt1 = dt1.AddDays(Convert.ToInt32(day));
                    DateTime dt2 = Convert.ToDateTime(datatime);
                    if (dt1.CompareTo(dt2) >= 0)
                    {

                    }
                    else if (dt1.CompareTo(dt2) < 0)
                    {
                        //执行删除任务的操作
                        DeleteTable(name);//执行删除任务
                    }
                }
            }
            catch (Exception ex)
            {
                LogHelper.WriteLogInfo("加载xml文件(数据库历史数据)异常：" + ex.ToString());

            }
            return true;
        }
        #endregion

        #region 删除表中的信息
        public bool DeleteTable(string table)
        {
            bool t = dal.DeleteTable(table);
            if (t == true)
            {
                //记录日志
                ErrorLogBLL logBLL = new ErrorLogBLL();
                ErrorLogModel error_model = new ErrorLogModel();
                error_model.Type = "3";
                error_model.Remark = "删除表中信息：日志目录: delete from " + table;
                logBLL.InsertErrorLog(error_model);
            }
            return t;
        }
        #endregion

        #region 删除保留时间(删除数据库中的数据的保留时间)
        public bool SaveTime(string table, string date, string time)
        {
            bool t = dal.SaveTime(table, date);
            return t;
        }
        #endregion

        #region 查看历史数据(显示表名)
        public IList<HistoryDataModel> HistoryData()
        {
            DataTable dt = dal.HistoryData();
            IList<HistoryDataModel> HistoryData = ModelConvertHelper<HistoryDataModel>.ConvertToModel(dt);
            return HistoryData;
        }
        #endregion

    }
}