ASP.NET网站版本自动更新程序及代码[转]

1、自动更新程序主要负责从服务器中获取相应的更新文件，并且把这些文件下载到本地，替换现有的文件。达到修复Bug，更新功能的目的。用户手工点击更新按钮启动更新程序。已测试。
2、环境VS2008，采用C#.NET和ASP.NET实现。
3、服务器：提供下载文件，发布出去。文件包括：dll, xml,aspx等格式文件。其中update.xml 是记录更新文件的。
4、客户端：项目里面添加一个autoupdate.xml 文件，该文件里有连接服务器的发布更新文件的服务器地址。当客户端里userupdate.xml文件里的版本号和服务器中update.xml里的版本号对比，如果服务器的版本号高，提醒客户端更新。
5、源代码如下所示。

1）、服务端发布至IIS如下图所示。

图1

其中bin目录下的dll文件属性写入打勾。

图2

Update.xml源码如下所示。

代码

2）、客户端代码，结构如下图所示。

图3

代码内有注释，在此不再多说。

Config.cs

代码

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

namespace WebUpdate
{
    public class Config
    {
        public string url = null;
        public string cmd = null;

        //读文件autoUpdate.xml
        public Config()
        {
            string path = AppDomain.CurrentDomain.BaseDirectory + "autoUpdate.xml";

            try
            {
                if (path != null)
                {
                    XmlDocument xmlDoc = new XmlDocument();
                    xmlDoc.Load(path);
                    url = xmlDoc.SelectSingleNode("/update/url").InnerText;

                }
            }
            catch (Exception ex)
            {
                throw new Exception("找不到autoUpdate.xml文件" + ex.Message);

            }
        }

        //获取服务器的版本
        public Version GetServerVersion()
        {
            XmlDocument xmlDoc = new XmlDocument();
            xmlDoc.Load(url);
            return new Version(xmlDoc.SelectSingleNode("/update/version").InnerText);
        }

        //获取客户端版本
        public string GetClientVersion()
        {
            url = AppDomain.CurrentDomain.BaseDirectory + "userVersion.xml";
            XmlDocument xmlUser = new XmlDataDocument();
            xmlUser.Load(url);
            XmlElement root = xmlUser.DocumentElement;
            XmlNode updateNode = root.SelectSingleNode("version");
            string version = updateNode.Attributes["value"].Value;
            return version;

        }

        //为了进行版本比较，进行转换为整数比较
        public int ConvertVersion(string value)
        {
            int w, z, x, y, temp;
            w = int.Parse(value.Substring(0, 1));
            z = int.Parse(value.Substring(2, 1));
            x = int.Parse(value.Substring(4, 1));
            y = int.Parse(value.Substring(6, 1));
            temp = w * 1000 + z * 100 + x * 10 + y;
            return temp;
        }

        //更新客户版本号为服务器的版本号
        public string UpdateVersion(string serVersion)
        {
            url = AppDomain.CurrentDomain.BaseDirectory + "userVersion.xml";
            XmlDocument xmlUser = new XmlDataDocument();
            xmlUser.Load(url);
            XmlElement root = xmlUser.DocumentElement;
            XmlNode updateNode = root.SelectSingleNode("version");
            string strVer = updateNode.Attributes["value"].Value;
            updateNode.Attributes["value"].Value = serVersion;
            xmlUser.Save(url);
            return serVersion;
        }

    }
}

DownFile.cs

代码

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Net;
using System.IO;

namespace WebUpdate
{
    public class DownFile
    {
        //从服务器下载文件,若目录存在，直接复制新文件，不存在则新建目录并复制文件，成功后返回1
        public bool DownFileFromServ(string url, string fileName)
        {
            bool downsucess = false;
            try
            {
                string fileExtraName = url.Split(char.Parse("."))[0];                              //文件名
                string fileAfterName = System.IO.Path.GetExtension(url);                //文件的扩展名
                if (fileAfterName == ".aspx")
                    url = fileAfterName + ".txt";
                HttpWebRequest myReq = (HttpWebRequest)WebRequest.Create(url);
                myReq.KeepAlive = true;
                HttpWebResponse myRes = (HttpWebResponse)myReq.GetResponse();

                downsucess = this.CopyFileAndDirectory(myRes, fileName);

            }
            catch (Exception e)
            {
                Console.WriteLine(e.ToString());
            }

            return downsucess;
        }

        //返回复制文件或创建目录是否成功
        public bool CopyFileAndDirectory(WebResponse myResp, string fileName)
        {
            bool flag = true;
            byte[] buffer = new byte[0x400];
            try
            {
                int num;
                //若本身已有该目录则删除
                if (System.IO.File.Exists(fileName))
                {
                    System.IO.File.Delete(fileName);
                }
                //创建目录更新到Updat目录下
                string directoryName = Path.GetDirectoryName(fileName);
                if (!Directory.Exists(directoryName))
                {
                    Directory.CreateDirectory(directoryName);
                }

                //指定文件fileName不存在时创建它
                Stream streamRead = System.IO.File.Open(fileName, FileMode.Create);

                Stream responseStream = myResp.GetResponseStream();

                do
                {
                    //从当前读取的字节流数,复制
                    num = responseStream.Read(buffer, 0, buffer.Length);
                    if (num > 0)
                    {
                        streamRead.Write(buffer, 0, num);
                    }
                }
                while (num > 0);
                streamRead.Close();
                responseStream.Close();
            }
            catch
            {
                flag = false;
            }

            return flag;

        }

    }
}

Update.cs

代码

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

namespace WebUpdate
{
    public class Update
    {
        //从服务器文件update.xml中获取要下载的文件列表
        public bool flag = false;

        public string[] GetFileList(string url)
        {
            XmlDocument xmlDoc = new XmlDocument();
            xmlDoc.Load(url);
            XmlElement root = xmlDoc.DocumentElement;
            XmlNode updateNode = root.SelectSingleNode("filelist");
            string soucePath = updateNode.Attributes["sourcepath"].Value;

            string fileName = null;
            string fileList = null;
            //取出服务器里update.xml里更新的file文件
            XmlNodeList fileNode = updateNode.SelectNodes("file");
            if (fileNode != null)
            {
                foreach (XmlNode i in fileNode)
                {
                    foreach (XmlNode j in i)
                    {
                        if (i.Attributes["filesname"].Value != "")
                            fileName = soucePath + i.Attributes["filesname"].Value + "/" + j.Attributes["name"].Value +
                                "$" + i.Attributes["filesname"].Value + "/" + j.Attributes["name"].Value;
                        else
                            fileName = soucePath + j.Attributes["name"].Value +
                                "$" + j.Attributes["name"].Value;

                        fileName += ",";
                        fileList += fileName;
                    }
                }

                string[] splitFile = fileList.Split(',');
                flag = true;
                return splitFile;
            }
            return null;
        }

    }
}

autoUpdate.xml

<update>
<url>http://Localhost/UpdateServ/update.xml</url>
</update>

userVersion.xml

<?xml version="1.0" encoding="utf-8"?>
<update>
<version value="1.0.1.9">客户端版本号</version>
</update>

Update.aspx

代码

<%@ Page Language="C#" AutoEventWireup="true"  CodeFile="Update.aspx.cs" Inherits="_Default" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
    <title>自动更新</title>
</head>
<body>
    <form id="form1" runat="server">
    <div>

        <br />
        <br />

        <asp:Label ID="lblDisplay" runat="server" style="text-align: center" mce_style="text-align: center"
            Text="Label" Visible="False"></asp:Label>
        <br />
        <br />

        <asp:Button ID="btnUpdate" runat="server" style="text-align: center" mce_style="text-align: center"
            Text="更新" onclick="btnUpdate_Click" Visible="False" Height="34px"
            Width="145px" />
        <br />


        <br />
        <asp:Label ID="NewVersion" runat="server" Text="Label1" Visible="false"></asp:Label>
        <br />
        <br />
        <asp:Label ID="CurrentVersion" runat="server" Text="Label2" Visible="false"></asp:Label>

    </div>
    </form>
</body>
</html>

Update.aspx.cs

代码

using System;
using System.Configuration;
using System.Data;
using System.Linq;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.HtmlControls;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Xml.Linq;
using WebUpdate;

public partial class _Default : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {
        lblDisplay.Text = "";
        btnUpdate.Visible = false;

        Config cf = new Config();

        NewVersion.Text = cf.GetServerVersion().ToString();
        CurrentVersion.Text = cf.GetClientVersion().ToString();

        int clientversion = cf.ConvertVersion(CurrentVersion.Text);
        int serverversion = cf.ConvertVersion(NewVersion.Text);
        if (serverversion > clientversion)
        {
            btnUpdate.Visible = true;
        }
        else
        {
            lblDisplay.Text = "已是最新版本，不需要更新！";
            lblDisplay.Visible = true;
        }

    }
    protected void btnUpdate_Click(object sender, EventArgs e)
    {
        string url = null;
        string[] files = null;
        Config updatecf = new Config();
        url = updatecf.url;
        Update upd = new Update();
        files = upd.GetFileList(url);

        UpdateFile(files);

        CurrentVersion.Text = updatecf.UpdateVersion(NewVersion.Text);

        lblDisplay.Text = "更新完成。";
        lblDisplay.Visible = true;
        btnUpdate.Visible = false;

    }

    private void UpdateFile(string[] files)
    {
        if ((files == null) || (files.Length <= 0))
        {
            Response.Write("升级完成");
        }
        else
        {
            int num = 0;
            for (int i = 0; i < files.Length; i++)
            {
                string str = files[i];
                if ((str != null) && (str.Split(new char[] { '$' }).Length == 2))
                {
                    string[] strArray = str.Split(new char[] { '$' });
                    this.UpdateFile(strArray[0], strArray[1]);
                    num++;
                }
            }
            if (num == 0)
            {
                Response.Write("升级完成");
            }
        }
    }

    private void UpdateFile(string url, string filename)
    {
        string fileName = AppDomain.CurrentDomain.BaseDirectory + filename;
        try
        {
            DownFile file = new DownFile();
            bool flag = file.DownFileFromServ(url, fileName);
        }
        catch
        {

        }
    }
}