ASP.NET 中将文件上传到另外一个服务器

来源：互联网发布：爱思mac版下载编辑：程序博客网时间：2024/05/21 09:48

http://bbs.csdn.net/topics/390210927

if (Ping("192.168.0.144")) //Ping 看通不通
{ 
   if (Connect("192.168.0.144", "administrator", "1qaz2wsx???")) //建立连接
  {
    _fileStream = new FileStream(@"\\192.168.0.144\hh\" + _currentFileName, FileMode.OpenOrCreate);
  }
} 
  
#region 连接远程机器
        public static bool Ping(string remoteHost)
        {
            bool Flag = false;
            Process proc = new Process();
            try
            {
                proc.StartInfo.FileName = "cmd.exe";
                proc.StartInfo.UseShellExecute = false;
                proc.StartInfo.RedirectStandardInput = true;
                proc.StartInfo.RedirectStandardOutput = true;
                proc.StartInfo.RedirectStandardError = true;
                proc.StartInfo.CreateNoWindow = true;
                proc.Start();
                string dosLine = @"ping -n 1 " + remoteHost;
                proc.StandardInput.WriteLine(dosLine);
                proc.StandardInput.WriteLine("exit");
                while (proc.HasExited == false)
                {
                    proc.WaitForExit(500);
                }
                string pingResult = proc.StandardOutput.ReadToEnd();
                if (pingResult.IndexOf("(0% loss)") != -1)
                {
                    Flag = true;
                }
                proc.StandardOutput.Close();
            }
            catch (Exception ex)
            {
            }
            finally
            {
                try
                {
                    proc.Close();
                    proc.Dispose();
                }
                catch
                {
                }
            }
            return Flag;
        }
  
        public static bool Connect(string remoteHost, string userName, string passWord)
        {
            if (!Ping(remoteHost))
            {
                return false;
            }
            bool Flag = true;
            Process proc = new Process();
            try
            {
                proc.StartInfo.FileName = "cmd.exe";
                proc.StartInfo.UseShellExecute = false;
                proc.StartInfo.RedirectStandardInput = true;
                proc.StartInfo.RedirectStandardOutput = true;
                proc.StartInfo.RedirectStandardError = true;
                proc.StartInfo.CreateNoWindow = true;
                proc.Start();
                string dosLine = @"net use \\" + remoteHost + " " + passWord + " " + " /user:" + userName + ">NUL";
                proc.StandardInput.WriteLine(dosLine);
                proc.StandardInput.WriteLine("exit");
                while (proc.HasExited == false)
                {
                    proc.WaitForExit(1000);
                }
                string errormsg = proc.StandardError.ReadToEnd();
                if (errormsg != "")
                {
                    Flag = false;
                }
                proc.StandardError.Close();
            }
            catch (Exception ex)
            {
                Flag = false;
            }
            finally
            {
                try
                {
                    proc.Close();
                    proc.Dispose();
                }
                catch
                {
                }
            }
            return Flag;
        }
        #endregion
  
排版差了点 请谅解。 测试通过

: sibiyellow; sibiyellow; 等级：; 结帖率：95.88%

#5 得分：0回复于： 2012-09-12 20:49:53

保存那边还有代码没贴。。就是filestream的写入操作

将文件上传到网络共享服务器的方法

1，在文件服务器上，创建一个本地帐户，比如登录名：upload，密码：upload，注意在创建的时候选择“密码永不过期”，去掉勾选“用户下次登录时须更改密码”的选项；
2，在要共享的文件夹上点右键，选择“属性”-“安全”，增加upload帐户可以写入的权限；
3，在要共享的文件夹上点右键，选择“共享”，共享此文件夹，并在“权限”按钮点击后添加帐户upload可修改；
4，在另外一台 Web 服务器上，创建登录名和密码与上面完全相同的本地帐户。
5，在web.config里，启用模拟：
web.config里添加的代码
<identity impersonate="true" userName="upload" password="upload" />

6，在网站文件夹和Temporary ASP.NET Files文件夹上设置帐户upload读写权限
7，在ASP.NET的上传文件里写：
C# 代码
protected void Button1_Click(object sender, EventArgs e)
{
  string fileName = System.IO.Path.GetFileName(FileUpload1.PostedFile.FileName);
  FileUpload1.SaveAs(@"\\192.168.3.1\free\" + fileName);
}

8，显示上传的文件：
在IIS里创建虚拟目录，指向“另一台计算机上的共享”，“连接为”输入上面创建的帐户名和密码。即可以http://www.mengxianhui.com/upload/hello.jpg进行访问。

注意：在VS里面直接运行可能会报告
Could not load file or assembly 'WebApplication1' or one of its dependencies. 拒绝访问。
这是因为你模拟的帐户没有权限导致的，你可以发布到IIS看效果。

下面是一段使用程序进行模拟的方法，出自 http://2leggedspider.wordpress.com/2007/05/28/upload-files-to-unc-share-using-asp-net/ ：
C# 代码

C# code
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using System.Security.Principal;
using System.Runtime.InteropServices;
  
namespace FileUploadUNCShare
{ 
    public partial class _Default : System.Web.UI.Page
    {
  
        public const int LOGON32_LOGON_INTERACTIVE = 2;
        public const int LOGON32_PROVIDER_DEFAULT = 0;
  
        WindowsImpersonationContext impersonationContext;
  
        [DllImport("advapi32.dll")]
        public static extern int LogonUserA(String lpszUserName,
            String lpszDomain,
            String lpszPassword,
            int dwLogonType,
            int dwLogonProvider,
            ref IntPtr phToken);
        [DllImport("advapi32.dll", CharSet = CharSet.Auto, SetLastError = true)]
        public static extern int DuplicateToken(IntPtr hToken,
            int impersonationLevel,
            ref IntPtr hNewToken);
  
        [DllImport("advapi32.dll", CharSet = CharSet.Auto, SetLastError = true)]
        public static extern bool RevertToSelf();
  
        [DllImport("kernel32.dll", CharSet = CharSet.Auto)]
        public static extern bool CloseHandle(IntPtr handle);
  
        private bool ImpersonateUser(String userName, String domain, String password)
        {
            WindowsIdentity tempWindowsIdentity;
            IntPtr token = IntPtr.Zero;
            IntPtr tokenDuplicate = IntPtr.Zero;
  
            if (RevertToSelf())
            {
                if (LogonUserA(userName, domain, password, LOGON32_LOGON_INTERACTIVE,
                    LOGON32_PROVIDER_DEFAULT, ref token) != 0)
                {
                    if (DuplicateToken(token, 2, ref tokenDuplicate) != 0)
                    {
                        tempWindowsIdentity = new WindowsIdentity(tokenDuplicate);
                        impersonationContext = tempWindowsIdentity.Impersonate();
                        if (impersonationContext != null)
                        {
                            CloseHandle(token);
                            CloseHandle(tokenDuplicate);
                            return true;
                        }
                    }
                }
            }
            if (token != IntPtr.Zero)
                CloseHandle(token);
            if (tokenDuplicate != IntPtr.Zero)
                CloseHandle(tokenDuplicate);
            return false;
        }
  
        private void UndoImpersonation()
        {
            impersonationContext.Undo();
        }
  
        protected void Page_Load(object sender, EventArgs e)
        {
  
        }
  
        protected void Button1_Click(object sender, EventArgs e)
        {
            if (ImpersonateUser("upload", "", "upload"))
            {
  
                if ((FileUpload1.PostedFile != null) && (FileUpload1.PostedFile.ContentLength &gt; 0))
                {
                    string fileName = System.IO.Path.GetFileName(FileUpload1.PostedFile.FileName);
                    string folderPath = @"\\MyUNCShare\MyFolder\";
  
                    string locationToSave = folderPath + "\\" + fileName;
                    try
                    {
                        FileUpload1.PostedFile.SaveAs(locationToSave);
                        Response.Write("The file has been uploaded.");
                    }
                    catch (Exception ex)
                    {
                        Response.Write("Error: " + ex.Message);
                    }
                }
                else
                {
                    Response.Write("Please select a file to upload.");
                }
  
                UndoImpersonation();
            }
            else
            {
                Response.Write("Failed");
            }
  
        }
    }
}