XML操作总结

需要读取的XML文件的格式：

<?xml version="1.0" encoding="utf-8" ?>
<XmlConfig>
  <!--连接登入视频服务器字符串。连接服务器视频IP地址；登入视频服务器用户名和密码-->
  <ConnectionString ServerIp="127.0.0.1" LoginName="gis" LoginPassword="gis"></ConnectionString>
  <!--大屏参数。单个屏幕的大小(1024*768)，行列数量(8行6列)-->
  <ScreenSize Width="1024" Height="768" RowCount="8" ColumnCount="6"></ScreenSize>
  <!--重要视频列表(如：市委、市民中心、市公安局等)。AutoPlay表示在加载视频后是否自动进行播放。-->
  <ImportantVideo AutoPlay="false">
    <!--视频编号列表-->
    <!--市民中心顶（南侧）-->
    <VideoNo Value="12345648789" />
    <!--市委党校西南门口前绿化带-->
    <VideoNo Value="31234645645" />
    <!--深南大道南侧招商银行广场前-->
    <VideoNo Value="98789789712" />
    <!--火车站东广场中巴站出口-->
    <VideoNo Value="98798451123" />
  </ImportantVideo>
 
</XmlConfig>

 

读取XML文件的具体类和接口：

 

using System;
using System.Collections.Generic;
using System.Text;
using System.Xml;

namespace Iaspec.LargeScreenPGIS.Common
{
    /// <summary>
    /// 对象xml系列化反系列化器
    /// </summary>
    public interface IXmlSerialize
    {
        /// <summary>
        /// 从一个Xml节点获取其属性对象.
        /// </summary>
        /// <param name="xmlElement"></param>
        object FromXmlElement(XmlElement xmlElement);

        /// <summary>
        /// 将属性写入到一个XML节点中
        /// </summary>
        /// <param name="xmlDocument">所要序列化的文档</param>
        /// <param name="thisElement"></param>
        /// <returns></returns>
        XmlElement ToXmlElement(XmlDocument xmlDocument, XmlElement thisElement);
    }
}

 

 

using System;
using System.Collections.Generic;
using System.Text;
using Iaspec.LargeScreenPGIS.Common;
using System.Xml;
using System.IO;
using System.Windows.Forms;
using log4net;

namespace Iaspec.LargeScreenPGIS.Video
{
    /// <summary>
    /// 视频控件需要的参数配置
    /// </summary>
    public class VideoConfig : IXmlSerialize
    {
        private ILog _log;
        private string _xmlPath;
        private XmlDocument _doc;
        private const string _connectionStringKey = "ConnectionString";
        private const string _screenSizeKey = "ScreenSize";
        private const string _importantVideoKey = "ImportantVideo";

        public VideoConfig()
            : this(Application.StartupPath + @"/VideoConfig.xml")
        { }
        public VideoConfig(string xmlPath)
        {
            this._log = LogManager.GetLogger("视频配置文件");
            this._xmlPath = xmlPath;
            //this.LoadXML(this._xmlPath);
        }

        /// <summary>
        /// 加载配置文件
        /// </summary>
        public void LoadXML()
        {
            this._xmlPath = Application.StartupPath + @"/VideoConfig.xml";
            this.LoadXML(this._xmlPath);
        }

        /// <summary>
        /// 加载配置文件
        /// </summary>
        /// <param name="xmlPath"></param>
        public void LoadXML(string xmlPath)
        {
            this._doc = new XmlDocument();
            try
            {
                if (!File.Exists(xmlPath))
                {
                    return;
                }

                this._doc.Load(xmlPath);

                this.FromXmlElement(this._doc.DocumentElement);
            }
            catch (Exception objEx)
            {
                this._log.Error("加载视频配置文件出错，异常信息:" + objEx.Message);
            }
        }
       
        public void Save()
        {
            this.Save(this._xmlPath);
        }

        /// <summary>
        /// 保存配置文件
        /// </summary>
        public void Save(string filePath)
        {
            this.ToXmlElement(this._doc, this._doc.DocumentElement);

            try
            {
                this._doc.Save(filePath);
            }
            catch (Exception objEx)
            {
                this._log.Error("保存视频配置文件出错，异常信息:" + objEx.Message);
            }
        }

        private VideoConnection _connection = new VideoConnection();
        public VideoConnection Connection
        {
            get { return _connection; }
            set { _connection = value; }
        }
        private ScreenSize _screenSize = new ScreenSize();
        public ScreenSize ScreenSize
        {
            get { return _screenSize; }
            set { _screenSize = value; }
        }
        private ImportantVideo _importantVideo = new ImportantVideo();
        public ImportantVideo ImportantVideo
        {
            get { return _importantVideo; }
            set { _importantVideo = value; }
        }

        #region IXmlSerialize 成员

        public object FromXmlElement(XmlElement xmlElement)
        {
            if (xmlElement != null)
            {
                this._connection = new VideoConnection();
                this._connection.FromXmlElement((xmlElement.SelectSingleNode(_connectionStringKey)) as XmlElement);

                this._screenSize = new ScreenSize();
                this._screenSize.FromXmlElement((xmlElement.SelectSingleNode(_screenSizeKey)) as XmlElement);

                this._importantVideo = new ImportantVideo();
                this._importantVideo.FromXmlElement((xmlElement.SelectSingleNode(_importantVideoKey)) as XmlElement);
            }

            return this;
        }

        public System.Xml.XmlElement ToXmlElement(XmlDocument xmlDocument, XmlElement thisElement)
        {
            if (this._connection != null)
            {
                this._connection.ToXmlElement(xmlDocument, (thisElement.SelectSingleNode(_connectionStringKey)) as XmlElement);
            }
            if (this._screenSize != null)
            {
                this._screenSize.ToXmlElement(xmlDocument, (thisElement.SelectSingleNode(_screenSizeKey)) as XmlElement);
            }
            if (this._importantVideo != null)
            {
                this._importantVideo.ToXmlElement(xmlDocument, (thisElement.SelectSingleNode(_importantVideoKey)) as XmlElement);
            }

            return thisElement;
        }

        #endregion
    }

    /// <summary>
    /// 连接登入视频服务器配置
    /// </summary>
    public class VideoConnection : IXmlSerialize
    {
        private const string _serverIpKey = "ServerIp";
        private const string _loginNameKey = "LoginName";
        private const string _loginPasswordKey = "LoginPassword";

        public VideoConnection()
        { }
        public VideoConnection(string serverIp,string loginName,string loginPassword)
        {
            this._serverIp = serverIp;
            this._loginName = loginName;
            this._loginPassword = loginPassword;
        }

        private string _serverIp = "";
        /// <summary>
        /// 连接视频服务的IP地址
        /// </summary>
        public string ServerIp
        {
            get { return _serverIp; }
            set { _serverIp = value; }
        }
        private string _loginName = "";
        /// <summary>
        /// 登入视频服务器的用户名
        /// </summary>
        public string LoginName
        {
            get { return _loginName; }
            set { _loginName = value; }
        }
        private string _loginPassword = "";
        /// <summary>
        /// 登入用户服务器的密码
        /// </summary>
        public string LoginPassword
        {
            get { return _loginPassword; }
            set { _loginPassword = value; }
        }

        #region IXmlSerialize 成员

        public object FromXmlElement(XmlElement xmlElement)
        {
            string serverIp = xmlElement.GetAttribute(_serverIpKey).Trim();
            string loginName = xmlElement.GetAttribute(_loginNameKey).Trim();
            string loginPassword = xmlElement.GetAttribute(_loginPasswordKey).Trim();
            if (!string.IsNullOrEmpty(serverIp))
            {
                this._serverIp = serverIp;
            }
            if (!string.IsNullOrEmpty(loginName))
            {
                this._loginName = loginName;
            }
            if (!string.IsNullOrEmpty(loginPassword))
            {
                this._loginPassword = loginPassword;
            }

            return this;
        }

        public XmlElement ToXmlElement(XmlDocument xmlDocument, XmlElement thisElement)
        {
            thisElement.SetAttribute(_serverIpKey, _serverIp);
            thisElement.SetAttribute(_loginNameKey, _loginName);
            thisElement.SetAttribute(_loginPasswordKey, _loginPassword);

            return thisElement;
        }

        #endregion
    }

    /// <summary>
    /// 屏幕大小
    /// </summary>
    public class ScreenSize : IXmlSerialize
    {
        private const string _widthKey = "Width";
        private const string _heightKey = "Height";
        private const string _rowCountKey = "RowCount";
        private const string _columnCountKey = "ColumnCount";

        public ScreenSize()
        { }
        public ScreenSize(int width, int height, int rowCount, int columnCount)
        {
            this._width = width;
            this._height = height;
            this._rowCount = rowCount;
            this._columnCount = columnCount;
        }

        private double _width = 1024;
        /// <summary>
        /// 宽度-默认1024
        /// </summary>
        public double Width
        {
            get { return _width; }
            set { _width = value; }
        }
        private double _height = 768;
        /// <summary>
        /// 高度-默认768
        /// </summary>
        public double Height
        {
            get { return _height; }
            set { _height = value; }
        }

        private int _rowCount = 8;
        /// <summary>
        /// 屏行数-默认8
        /// </summary>
        public int RowCount
        {
            get { return _rowCount; }
            set { _rowCount = value; }
        }

        private int _columnCount = 6;
        /// <summary>
        /// 屏列数-默认6
        /// </summary>
        public int ColumnCount
        {
            get { return _columnCount; }
            set { _columnCount = value; }
        }

        private int _largeWidth = 8192;
        /// <summary>
        /// 宽度-默认8192
        /// </summary>
        public int LargeWidth
        {
            get { return _largeWidth * _rowCount; }
        }
        private int _largeHeight = 4608;
        /// <summary>
        /// 高度-默认4608
        /// </summary>
        public int LargeHeight
        {
            get { return _largeHeight * _columnCount; }
        }

        #region IXmlSerialize 成员

        public object FromXmlElement(XmlElement xmlElement)
        {
            string largeWidth =xmlElement.GetAttribute(_widthKey).Trim();
            string largeHeight = xmlElement.GetAttribute(_heightKey).Trim();
            string rowCount = xmlElement.GetAttribute(_rowCountKey).Trim();
            string columnCount = xmlElement.GetAttribute(_columnCountKey).Trim();

            try
            {
                if (!string.IsNullOrEmpty(largeWidth))
                {
                    this._largeWidth = Convert.ToInt32(largeWidth);
                }
                if (!string.IsNullOrEmpty(largeHeight))
                {
                    this._largeHeight = Convert.ToInt32(largeHeight);
                }
                if (!string.IsNullOrEmpty(rowCount))
                {
                    this._rowCount = Convert.ToInt32(rowCount);
                }
                if (!string.IsNullOrEmpty(columnCount))
                {
                    this._columnCount = Convert.ToInt32(columnCount);
                }
            }
            catch { }

            return this;
        }

        public XmlElement ToXmlElement(XmlDocument xmlDocument, XmlElement thisElement)
        {
            thisElement.SetAttribute(_widthKey, _largeWidth.ToString());
            thisElement.SetAttribute(_heightKey, _largeHeight.ToString());
            thisElement.SetAttribute(_rowCountKey, _rowCount.ToString());
            thisElement.SetAttribute(_columnCountKey, _columnCount.ToString());

            return thisElement;
        }

        #endregion
    }

    /// <summary>
    /// 重要视频点
    /// </summary>
    public class ImportantVideo : IXmlSerialize
    {
        private const string _autoPlayKey = "AutoPlay";
        private const string _videoNoKey = "VideoNo";
        private const string _valueKey = "Value";

        public ImportantVideo()
        { }
        public ImportantVideo(bool auto)
        { }

        private bool _autoPlay = false;
        public bool AutoPlay
        {
            get { return _autoPlay; }
            set { _autoPlay = value; }
        }

        private List<string> _videoNoList = new List<string>();
        public List<string> VideoNoList
        {
            get { return _videoNoList; }
            set { _videoNoList = value; }
        }

        #region IXmlSerialize 成员

        public object FromXmlElement(XmlElement xmlElement)
        {
            try
            {
                string autoPlay = xmlElement.GetAttribute(_autoPlayKey).Trim();

                if (!string.IsNullOrEmpty(autoPlay))
                {
                    this._autoPlay = Convert.ToBoolean(autoPlay);
                }
                XmlNodeList videoNoLists = xmlElement.ChildNodes;
                if (videoNoLists != null && videoNoLists.Count > 0)
                {
                    foreach (XmlNode xmlNode in videoNoLists)
                    {
                        if (xmlNode.Name == _videoNoKey)
                        {
                            string videoNo = (xmlNode as XmlElement).GetAttribute(_valueKey).Trim();
                            //string videoNo = xmlNode.InnerText;
                            if (!this._videoNoList.Contains(videoNo))
                                this._videoNoList.Add(videoNo);
                        }
                    }
                }
            }
            catch
            { }
            return this;
        }

        public XmlElement ToXmlElement(XmlDocument xmlDocument, XmlElement thisElement)
        {
            thisElement.SetAttribute(_autoPlayKey, Convert.ToString(_autoPlay));

            XmlNodeList videoNoLists = thisElement.SelectSingleNode(_videoNoKey).ChildNodes;
            for (int i = 0; i < this._videoNoList.Count; i++)
            {
                if (videoNoLists[i] != null && videoNoLists[i].InnerText != this._videoNoList[i])
                    videoNoLists[i].InnerText = this._videoNoList[i];
            }
           
            return thisElement;
        }

        #endregion
    }
}