通过SSIS连接到SFTP

对于最近的一个工作项目，我也必须这样做。我们在WinSCP .NET assembly内部使用了SSIS脚本任务，因为这也是WinSCP推荐的，它是在SSIS中使用WinSCP实现SFTP的方法。

请参阅本指南- 使用SQL Server Integration Services（SSIS）中的WinSCP .NET程序集。它引导您完成安装和设置，并包含有效的示例代码（当然，在您更改脚本后！）。

下面是示例代码（在引用WinSCPnet.dll程序集之后）。

using System;
using Microsoft.SqlServer.Dts.Runtime;
using Microsoft.SqlServer.Dts.Tasks.ScriptTask;
using System.AddIn;
using WinSCP;

namespace ST_5a30686e70c04c5a8a93729fd90b8c79.csproj
{
    [AddIn("ScriptMain", Version = "1.0", Publisher = "", Description = "")]
    public partial class ScriptMain : VSTARTScriptObjectModelBase
    {
        public void Main()
        {
            // Setup session options
            SessionOptions sessionOptions = new SessionOptions
            {
                Protocol = Protocol.Sftp,
                // To setup these variables, go to SSIS > Variables.
                // To make them accessible from the script task, in the context menu of the task,
                // choose Edit. On the Script task editor on Script page, select ReadOnlyVariables,
                // and tick the below properties.
                HostName = (string) Dts.Variables["User::HostName"].Value,
                UserName = (string) Dts.Variables["User::UserName"].Value,
                Password = (string) Dts.Variables["User::Password"].Value,
                SshHostKeyFingerprint = (string) Dts.Variables["User::SshHostKeyFingerprint"].Value
            };

            try
            {
                using (Session session = new Session())
                {
                    // As WinSCP .NET assembly has to be stored in GAC to be used with SSIS,
                    // you need to set path to WinSCP.exe explicitly, if using non-default location.
                    session.ExecutablePath = @"C:\winscp\winscp.exe";

                    // Connect
                    session.Open(sessionOptions);

                    // Upload files
                    TransferOptions transferOptions = new TransferOptions();
                    transferOptions.TransferMode = TransferMode.Binary;

                    TransferOperationResult transferResult;
                    transferResult = session.PutFiles(@"d:\toupload\*", "/home/user/", false, transferOptions);

                    // Throw on any error
                    transferResult.Check();

                    // Print results
                    bool fireAgain = false;
                    foreach (TransferEventArgs transfer in transferResult.Transfers)
                    {
                        Dts.Events.FireInformation(0, null, 
                            string.Format("Upload of {0} succeeded", transfer.FileName),
                            null, 0, ref fireAgain);
                    }
                }

                Dts.TaskResult = (int)DTSExecResult.Success;
            }
            catch (Exception e)
            {
                Dts.Events.FireError(0, null,
                    string.Format("Error when using WinSCP to upload files: {0}", e),
                    null, 0);

                Dts.TaskResult = (int)DTSExecResult.Failure;
            }
        }
    }
}