我正在尝试在C＃中创建一个小程序来从Sharepoint数据库中提取文件。我从在线搜索中获取了代码，并且我正在尝试编辑它，以便在从Sharepoint数据库维护文件夹的同时将文件解压缩到特定文件夹。
具体来说，我希望用户从表单中输入服务器的名称，他们尝试从中提取文件的数据库的名称，最后是他们希望用来提取文件的路径。
调试时出错。
错误说明：Could not find a part of the path:
关于这行代码：
FileStream fs = new FileStream(txtdir.Text + "/" + DirName + "/" + LeafName,
FileMode.Create, FileAccess.Write);
这是我的代码：
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();
}
}
}
答案 0 :(得分：1)
以下是用于从WSS3数据库（即MDF文件）中提取文件的整个DoxoEater2程序，但必须在MS SQL中安装。
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");
}
}
}
答案 1 :(得分：1)
相同的PowerShell：
$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();
}
答案 2 :(得分：0)
试试这个：
string fullPath = System.IO.Path.Combine(txtdir.Text,DirName,LeafName);
Console.WriteLine("accessing " + fullPath);
FileStream fs = new FileStream(fullPath, FileMode.Create, FileAccess.Write);