從共享點數據庫中提取文件

Question

我正在嘗試在C＃中創建一個小程序，以便從Sharepoint數據庫中提取文件。我從在線搜索中獲取了代碼，並試圖對其進行編輯，以便將文件解壓縮到特定的文件夾，同時維護Sharepoint數據庫中的文件夾。

具體來說，我希望用戶從表單中輸入服務器的名稱，他們試圖從中提取文件的數據庫的名稱，最後是他們希望用來提取文件的路徑。

我在調試時出現錯誤。

的錯誤狀態：Could not find a part of the path:
關於這行代碼：

FileStream fs = new FileStream(txtdir.Text + "/" + DirName + "/" + LeafName, 
FileMode.Create, FileAccess.Write); 

這裏是我的代碼：

using System; 
using System.Collections.Generic; 
using System.ComponentModel; 
using System.Data; 
using System.Drawing; 
using System.Linq; 
using System.Text; 
using System.Windows.Forms; 
using System.Data.SqlClient; 
using System.IO; 

namespace SPEXTRACTOR 
{ 
    public partial class Form1 : Form 
    { 
    public Form1() 
    { 
     InitializeComponent(); 
    } 

    private void Form1_Load(object sender, EventArgs e) 
    { 
    } 

    private void ENTER_Click(object sender, EventArgs e) 
    { 
     string DBConnString = "Server=" + txtserver.Text + ";Database=" 
          + txtDB.Text + ";Trusted_Connection=True;"; 
     SqlConnection con = new SqlConnection(DBConnString); 
     con.Open(); 

     SqlCommand com = con.CreateCommand(); 
     com.CommandText = "SELECT ad.SiteId, ad.Id, ad.DirName," + 
      " ad.LeafName, ads.Content" + 
      " FROM AllDocs ad, AllDocStreams ads" + 
      " WHERE ad.SiteId = ads.SiteId" + 
      " AND ad.Id = ads.Id" + 
      " AND ads.Content IS NOT NULL" + 
      " Order by DirName"; 


     //SqlCommand com = con.CreateCommand(); 
     //com.CommandText = "select DirName, LeafName, Content 
     from AllDocStreams, AllDocs 
     where (LeafName like '%.doc' or LeafName like '%.xls' 
       or LeafName like '%.pdf' or LeafName like '%.ppt') 
       and Content is not NULL"; 


     //com.CommandText = "select DirName, LeafName, Content 
     from AllDocStreams, AllDocs 
     where (LeafName like '%.doc' or LeafName like '%.xls' 
       or LeafName like '%.pdf' or LeafName like '%.ppt') 
       and Content is not NULL"; 


     SqlDataReader reader = com.ExecuteReader(); 

     while (reader.Read()) 
     { 
     // grab the file's directory and name 
     string DirName = (string)reader["DirName"]; 
     string LeafName = (string)reader["LeafName"]; 

     if (!Directory.Exists(DirName)) 
     { 
      Directory.CreateDirectory(DirName); 
      Console.WriteLine("Creating directory: " + DirName); 
     } 

     //FileStream fs = new FileStream(DirName + "/" + LeafName 
           , FileMode.Create, FileAccess.Write); 
     FileStream fs = new FileStream(txtdir.Text + "/" + DirName + "/" 
          + LeafName, FileMode.Create, FileAccess.Write); 

     BinaryWriter writer = new BinaryWriter(fs); 

     // depending on the speed of your network, 
     //you may want to change the buffer size (it's in bytes) 
     int bufferSize = 1000000; 
     long startIndex = 0; 
     long retval = 0; 
     byte[] outByte = new byte[bufferSize]; 

     // grab the file out of the db one chunk (of size bufferSize) at a time 
     do 
     { 
      retval = reader.GetBytes(4, startIndex, outByte, 0, bufferSize); 
      //retval = reader.GetBytes(2, startIndex, outByte, 0, bufferSize); 
      startIndex += bufferSize; 

      writer.Write(outByte, 0, (int)retval); 
      writer.Flush(); 
     } while (retval == bufferSize); 

     // finish writing the file 
     writer.Close(); 
     fs.Close(); 

     Console.WriteLine("Finished writing file: " + LeafName); 
     } 

     // close the DB connection and whatnots 
     reader.Close(); 
     con.Close(); 
    }     
    } 
} 

Answer 1

試試這個：

string fullPath = System.IO.Path.Combine(txtdir.Text,DirName,LeafName); 
Console.WriteLine("accessing " + fullPath); 
FileStream fs = new FileStream(fullPath, FileMode.Create, FileAccess.Write); 

Answer 2

這裏就是整個DoxoEater2程序用於提取來自WSS3數據庫的文件，也就是MDF文件，但必須安裝在MS SQL中。

using System; 
using System.Collections.Generic; 
using System.Text; 
using System.Data; 
using System.Data.SqlClient; 
using System.IO; 

namespace DoxoEater2 
{ 
    class Program 
    { 
     static void Main(string[] args) 
     { 

      // WSS 3.0 default DB via SQL 2005 embedded edition. 
      //string DBConnString = "Data Source=\\\\.\\pipe\\MSSQL$MICROSOFT##SSEE\\sql\\query;Database=WSS_Content;Trusted_Connection=yes;Timeout=2000;MultipleActiveResultSets=True"; 

      // Or localhost, WSS_Content, typical SQL connection style, TCP/IP listener. 
      string DBConnString = "Data Source=localhost;Database=WSS_Content;Trusted_Connection=yes;Timeout=2000;MultipleActiveResultSets=True"; 
      string DocsQuery = "select [AllDocs].[Id], [AllDocs].[DirName], [AllDocs].[LeafName] from [AllDocs] where dirname <> '' order by dirname;"; 

      Console.WriteLine("START: " + DateTime.Now.ToUniversalTime() + " UTC"); 

      SqlConnection con; 

      try // create a DB connection 
      { 
       con = new SqlConnection(DBConnString); 
       con.Open(); 
      } 
      catch (Exception e) { 
       Console.WriteLine(e.Message); 
       return; 
      } 

      SqlCommand com = con.CreateCommand(); 
      com.CommandText = DocsQuery; 

      // readers for SQL queries: 1) which docs? 2) featch binary data per DocID 
      SqlDataReader reader, reader2; 

      try { // execute query 
       reader = com.ExecuteReader(); 
      } 
      catch (Exception e) { 
       if (con != null) { con.Close(); } 
       Console.WriteLine(e.Message); 
       return; 
      } 

      while (reader.Read()) { // rows of document ID, name and directory nodes 

       // grab the file's directory and name 
       Guid FileId = (Guid)reader["Id"]; 
       string DirName = (string)reader["DirName"]; 
       string LeafName = (string)reader["LeafName"]; 

       // create directory for the file if it doesn't yet exist 
       if (!Directory.Exists(DirName)) 
       { 
        Directory.CreateDirectory(DirName); 
        Console.WriteLine("DIR: " + DirName); 
       } 

       // check if file already exists or not 
       if (File.Exists(DirName + "/" + LeafName)) { 
        Console.WriteLine("ERROR: File Already Exists: " + DirName + "/" + LeafName); 
        continue; 
       } 

       SqlCommand com2 = con.CreateCommand(); 
       com2.CommandText = "select content from [AllDocStreams] where [AllDocStreams].[Id] = '" + FileId.ToString() + "';"; 
       Console.WriteLine("SQL: " + com2.CommandText.ToString()); 

       try 
       { // execute file fetch query 
        reader2 = com2.ExecuteReader(CommandBehavior.SequentialAccess); 
       } 
       catch (Exception e) 
       { 
        if (con != null) { con.Close(); } 
        Console.WriteLine(e.Message); 
        return; 
       } 

       while(reader2.Read()) { 

        // create a filestream to spit out the file 
        FileStream fs = new FileStream(DirName + "/" + LeafName, FileMode.Create, FileAccess.Write); 
        BinaryWriter writer = new BinaryWriter(fs); 


        // depending on the speed of your network, you may want to change the buffer size (it's in bytes) 
        int bufferSize = 1048576; 
        long startIndex = 0; 
        long retval = 0; 
        byte[] outByte = new byte[bufferSize]; 

        // grab the file out of the db one chunk (of size bufferSize) at a time 
        do 
        { 
         retval = reader2.GetBytes(0, startIndex, outByte, 0, bufferSize); 
         startIndex += bufferSize; 

         writer.Write(outByte, 0, (int)retval); 
         writer.Flush(); 
        } while (retval == bufferSize); 

        // finish writing the file 
        Console.WriteLine("FILE: " + LeafName); 
        writer.Close(); 
        fs.Close(); 

       } 
       reader2.Close(); 

      } 

      // close the DB connection and whatnots 
      reader.Close(); 
      con.Close(); 

      Console.WriteLine("DONE: " + DateTime.Now.ToUniversalTime() + " UTC"); 
     } 
    } 
} 

Answer 3

PowerShell中相同的：

$Server="localhost" 
$db="WSSContent" 
$LocalDir="C:\xyz" 

$sql = "SELECT ad.SiteId, ad.Id, ad.DirName, 
ad.LeafName, ads.Content 
FROM AllDocs ad, AllDocStreams ads 
WHERE ad.SiteId = ads.SiteId 
AND ad.Id = ads.Id 
AND ads.Content IS NOT NULL 
AND ad.LeafName like '%aspx' 
Order by DirName"; 


$connectionString = "Data Source=$Server;Integrated Security=true;Initial Catalog=$db;Connect Timeout=3;" 
$con = new-object ("Data.SqlClient.SqlConnection") $connectionString 

$con.Open(); 
$cmd = $con.CreateCommand(); 
$cmd.CommandText = $sql; 
$reader = $cmd.ExecuteReader(); 

while ($reader.Read()) 
{ 
    # grab the file's directory and name 
    $DirName = [string]$reader["DirName"]; 
    $LeafName = [string]$reader["LeafName"]; 

    if (-not [System.IO.Directory]::Exists("$LocalDir\$DirName")) 
    { 
     [System.IO.Directory]::CreateDirectory("$LocalDir\$DirName"); 
     Write-Host "Creating directory: $LocalDir\$DirName" 
    } 

    $fs = New-Object IO.FileStream "$LocalDir\$DirName\$LeafName" ,'Create','Write','Read'; 

    $writer = new-object "System.IO.BinaryWriter" $fs; 

    # depending on the speed of your network, 
    #you may want to change the buffer size (it's in bytes) 
    $bufferSize = 1000000; 
    $startIndex = 0; 
    $retval = 0; 
    $out = [array]::CreateInstance('Byte', $bufferSize) 
    # 
    ## grab the file out of the db one chunk (of size bufferSize) at a time 
    Write-Host "Writing to $LocalDir\$DirName\$LeafName" 
    Do{ 
     $retval = $reader.GetBytes(4, $startIndex, $out, 0, $bufferSize); 
     $startIndex += $bufferSize; 

     $writer.Write($out, 0, $retval); 
     $writer.Flush(); 
    }while ($retval -eq $bufferSize) 
    # 
    ## finish writing the file 
    $writer.Close(); 
    $fs.Close(); 

}