vb.net 查找指定文件夹内的txt文件并把这些文件上传至FTP后删除源文件,然后30秒后重复这个过程
时间: 2024-10-04 21:01:25 浏览: 22
在VB.NET中,你可以通过以下步骤来查找指定文件夹内的TXT文件、上传到FTP服务器、删除源文件,以及设置定时任务重复操作:
1. 引入所需库:首先,你需要添加System.IO.FileSystemInfo、System.IO.File、System.Net.FtpClient和System.Threading.Tasks命名空间,以便处理文件操作和FTP连接。
```vb
Imports System.IO
Imports System.IO.FileSystemInfo
Imports System.IO.File
Imports System.Net.FtpClient
Imports System.Threading.Tasks
```
2. 定义FTP客户端和函数:创建FTP客户端实例,并编写一个UploadFileAndDelete方法,用于上传、删除文件和计时。
```vb
Private Sub UploadFileAndDelete(ByVal filePath As String, ByVal ftpServerInfo As FtpServerInfo)
Using client As New FtpClient(ftpServerInfo.Host, ftpServerInfo.Port)
' 设置登录信息
client.Credentials = New NetworkCredential(ftpServerInfo.Username, ftpServerInfo.Password)
' 连接到FTP服务器
If Not client.Connect() Then
Throw New Exception("Failed to connect to FTP server.")
End If
Try
' 上传文件
Dim uploadResult As Boolean = client.UploadFile(filePath, Path.GetFileName(filePath))
If uploadResult Then
Console.WriteLine("Uploaded file {0} to FTP.", filePath)
Else
Console.WriteLine("Failed to upload file {0}.", filePath)
End If
' 删除本地文件
File.Delete(filePath)
Console.WriteLine("Deleted local file {0}.", filePath)
' 等待30秒
Task.Delay(TimeSpan.FromSeconds(30)).Wait()
Catch ex As Exception
Console.WriteLine("Error occurred: ", ex.Message)
Finally
' 断开FTP连接
client.Disconnect()
End Try
End Using
End Sub
```
3. 创建FtpServerInfo结构体和主循环:为了简化配置,可以创建一个包含FTP服务器信息的结构体,然后在主循环中寻找TXT文件并执行上述函数。
```vb
Public Class FtpServerInfo
Public Property Host As String
Public Property Port As Integer
Public Property Username As String
Public Property Password As String
End Class
Dim ftpFolder As String = "C:\Your\Local\Folder"
Dim ftpInfo As New FtpServerInfo With {
.Host = "your.ftp.server.com",
.Port = 21,
.Username = "your_username",
.Password = "your_password"
}
While True
Dim txtFiles As List(Of FileInfo) = Directory.GetFiles(ftpFolder, "*.txt")
For Each file In txtFiles
UploadFileAndDelete(file.FullName, ftpInfo)
Next
' 如果需要延长时间再检查,这里可以添加时间间隔
End While
```
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