批量修改同一个目录中的所有文本文件的方法

 

在Temp/目录下,所有的*.txt文件.
我想把所有的文件中的一列数据去掉如:
a.txt  -----> a.txt 
a b 1 1       a 1 1
c d 2 2       c 2 2
e f 3 3       e 3 3
g h 4 4       g 4 4
i j 5 5       i 5 5

解决方法:
批量处理文本文件的方法
a:批量处理某一个目录下的文本文件
b:批量修改文本文件中的第二列数据去掉

得到Temp/目录中的所有文本文件

 Dim di As IO.DirectoryInfo
 di = New IO.DirectoryInfo("F:\Root	bak")
 Dim fi As IO.FileInfo

For Each fi In di.GetFiles("*.txt")
            Dim s As String
            Dim reader As IO.StreamReader
            reader = New IO.StreamReader(fi.FullName)
            s = reader.ReadToEnd
            reader.Close()

第一个文件处理操作
            ProcessString(s, fi.FullName)
        Next

--文件中处理过程

    Public Sub ProcessString(ByVal content As String, ByVal FileName As String)
        Dim reader As IO.StringReader
        reader = New IO.StringReader(content)
        Dim writer As IO.StreamWriter
        writer = New IO.StreamWriter(FileName)
        Dim line As String
        line = reader.ReadLine()
        While (line <> Nothing)
            Dim ss As String()
            ss = line.Split(" ")

--处理数租操纵
            Array.Copy(ss, 2, ss, 1, ss.Length - 2)
            writer.WriteLine(String.Join(" ", ss, 0, ss.Length - 1))
            line = reader.ReadLine
        End While
        writer.Close()
        reader.Close()
    End Sub

--window Xp ,SQL_SERVER2000下测试通过!



---文件Copy,然后放到指定目录,删除原来目录文件

60秒刷新页面,判断是否有r0011.txt文件
如果r0011.txt文件不存在,在指定目录中去Copy文本文件,设置当前时间为:文本文件时间+"23:59:00",Copy文件到
 C:,并更名为:r0011.txt文件
等待60秒,循环

 每30秒刷新一次
        Dim Lsql As String

        Response.AddHeader("Refresh", "30")
        If IO.File.Exists("F:Root0011.txt") Then
            Response.Write("数据正等待处理.......")
        Else
            从源目录中拷贝文件
            Dim di As IO.DirectoryInfo
            di = New IO.DirectoryInfo("F:\Root	bak")
            Dim fi As IO.FileInfo
            For Each fi In di.GetFiles("*.txt")

                If IO.File.Exists("F:Root0011.txt") Then
                    如果上一个文件还没入库,则等待
                    Response.Write("上一个文件正在进行入库处理.......")
                    Exit For
                Else

                    Dim s, Year, Month, day As String
                    Dim reader As IO.StreamReader

                    reader = New IO.StreamReader(fi.FullName)
                    s = reader.ReadToEnd
                    更新系统当然时间.
                    a:得到年份
                    Year = "20" + Left(Right(fi.Name(), Len(fi.Name) - 1), 2)
                    b:得到月份
                    Month = Right(Left(Right(fi.Name(), Len(fi.Name) - 1), 4), 2)
                    c:得到日期
                    day = Right(Left(Right(fi.Name(), Len(fi.Name) - 1), 6), 2)
                    设置系统时间
                    Lsql = " exec master..xp_cmdshell date " & day & "-" & Month & "-" & Year & " "
                    Lsql = Lsql + "exec master..xp_cmdshell time 23:50:00 "

                    ZeHua.Data.DataHelper.exeSQL("Provider=SQLOLEDB;Server=(local);database=IDBS;user id=sa;password=", Lsql)

                    ProcessString(s, "F:Root0011.txt")
                    reader.Close()

                    如果文件存在,删除文件
                    If IO.File.Exists(fi.FullName) Then
                        IO.File.Delete(fi.FullName)
  &nbs

补充：Web开发 , ASP.Net ,