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

< update >
    < version > 1.0.1.9 </ version >
    < datetime > 2009-12-14 </ datetime >
    < filelist filescount ="5" itemcount ="11" sourcepath ="http://Localhost/UpdateServ/" >

    < file filesname ="" >
    < item name ="xiaxia.txt" size ="" >
     </ item >
    </ file >

   < file filesname ="UpFile" >
     < item name ="2222.dll" size ="" >
     </ item >
     < item name ="1162193918505.doc" size ="" >
     </ item >
     < item name ="xd.doc" size ="" >
     </ item >
     < item name ="s2.txt" size ="" >
     </ item >
     < item name ="a.dll" size ="" >
     </ item >
     < item name ="WebUPFILE.dll" size ="" >
     </ item >
   </ file >

< file filesname ="test" >

< item name ="aa.txt" size ="" >
</ item >
< item name ="2.txt" size ="" >
</ item >
</ file >

< file filesname ="Copy" >

< item name ="bb.doc" size ="" >
</ item >
< item name ="b.dll" size ="" >
</ item >
</ file >

< file filesname ="hehe" >

< item name ="hehe.txt" size ="" >
</ item >
< item name ="WebUPFILE.dll" size ="" >
</ item >
</ file >

</ filelist >
</ update >

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
        {

        }
    }
}

转载于:https://www.cnblogs.com/PingleDay/p/3494350.html