基于TCP网络通信的自动升级程序源码分析--生成升级文件相关的配置文件

先从服务器端生成的配置文件说起吧 配置文件名称upgradeconfig.xml 文件内容大致如下

<?xml version="1.0" encoding="utf-8"?>
<UpgradeConfig xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema">
  <FileList>
    <string>Lighthouse.jpg</string>
    <string>Penguins.jpg</string>
    <string>Tulips.jpg</string>
    <string>UpgradeConfig.xml</string>
  </FileList>
  <AppVersion>2</AppVersion>
</UpgradeConfig>

这个配置文件是服务器端程序自动生成的

服务器端界面如下：

我们看一下点击这个按钮触发的相关方法

  //升级文件存放的目录
        //这个目录的位置是指定的 当然您也可以换个名称
        string upgradeFolder = AppDomain.CurrentDomain.BaseDirectory + "UpgradeFile\\";

        private UpgradeConfig upgradeConfig = null;

        private void button1_Click(object sender, EventArgs e)
        {
            //如果程序目录不存在UpgradeFile文件夹，则创建升级文件文件夹
            ActionHelper.CreateDir(upgradeFolder);

            List<string> list = new List<string>();
            DirectoryInfo dir = new DirectoryInfo(upgradeFolder);

            foreach (FileInfo info in dir.GetFiles())
            {
                //把文件名称添加到list列表中
                //info.FullName.Substring(upgradeFolder.Length)  表示去掉路径 只保留文件名称
                list.Add(info.FullName.Substring(upgradeFolder.Length));

            }
            //给upgradeConfig类赋值
            //<1> 给文件列表赋值
            upgradeConfig.FileList = list;
            //<2>把upgradeConfig类的内容保存成xml文件
            upgradeConfig.Save(UPConfigFilePath);

            //在窗体上显示一下
            listBox1.DataSource = list;
            textBox1.Text = upgradeConfig.AppVersion.ToString ();

        }
         

我们再来看一下upgradeConfig类

这个类既可以序列化后通过网络传输，也可以保存成本地xml文件

   [ProtoContract]
     public  class UpgradeConfig
    {
       //文件名称列表
        [ProtoMember(1)]
        public List<string> FileList { get; set; }

       //应用程序版本号

        [ProtoMember(2)]
        public int AppVersion { get; set; }

        /// <summary>
        /// 此处写法主要应对文件列表为空的情况，加上一下代码就不出错了
        /// </summary>
        [DefaultValue(false), ProtoMember(3)]
        private bool IsEmptyList
        {
            get { return FileList != null && FileList.Count == 0; }
            set { if (value) { FileList = new List<string>(); } }
        }

       //文件保存路径

        public UpgradeConfig()
        {

        }

       //加载配置文件
        public static UpgradeConfig LoadConfig(string filePath)
        {
            XmlSerializer serializer = new XmlSerializer(typeof(UpgradeConfig));

            StreamReader sr = new StreamReader(filePath);

            UpgradeConfig upgradeConfig = serializer.Deserialize(sr) as UpgradeConfig;

            sr.Close();

            return upgradeConfig;
        }
       //保存配置文件
        public void Save(string filePath)
        {
            XmlSerializer serialzier = new XmlSerializer(typeof(UpgradeConfig));

            StreamWriter writer = new StreamWriter(filePath);

            string tempPath = Path.GetDirectoryName(filePath);

            if (!Directory.Exists(tempPath))
            {
                Directory.CreateDirectory(tempPath);
            }

            serialzier.Serialize(writer, this);

            writer.Close();
        }

    }

  public static class ActionHelper
    {
        /// <summary>
        /// 确保路径中的目录存在
        /// </summary>
        /// <param name="spath"></param>
        public static void CreateDir(string spath)
        {
            string path = Path.GetDirectoryName(spath);

            if (!Directory.Exists(path))
            {
                DirectoryInfo directoryInfo = new DirectoryInfo(path);
                directoryInfo.Create();
            }
        }
    }

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