动态修改文件内容中的DateTime

Question

我正在尝试用当前时间修改文件中日志记录的日期和时间，并将其保存在同一个文件中，但不知何故我无法更新它们。 DateTime 是动态变化的，我想按顺序更改每条记录的 DateTime。

如下所示，日期时间随着秒数和毫秒数的增加而变化 - 有没有办法可以根据当前系统时间递增地修改文件？我已经尝试过以下方式-我知道它不正确，但尝试了它是否有效。任何建议或建议解决此问题，请帮助。

环境：Windows 2008 和 Windows 2003

$PATH = "D:\Log\focusServer\focusServer.txt"
$content = "2015-10-27 15:50:21,900 [ListenerThread0] WARN  focus.Core.Server.States.InvalidIPRangeState - Begin 'InvalidIPRangeState' for application '|did:N/A^ep:10.160.210.222:40534^iprg:N/A|'
2015-10-27 15:50:21,900 [ListenerThread0] INFO  focus.Core.Server.Connection.DcmpConnection - |did:N/A^ep:01.60.210.222:40534^iprg:N/A|: Connection Established
2015-10-27 15:50:49,993 [12 ] INFO  focus.Core.Server.Connection.DcmpConnection - |did:N/A^ep:01.60.213.172:39158^iprg:N/A|: Connection Closed.  Reason: Socket closed by remote party (0-byte packet received)
2015-10-27 15:50:49,994 [ListenerThread0] WARN  focus.Core.Server.States.InvalidIPRangeState - Begin 'InvalidIPRangeState' for application '|did:N/A^ep:01.60.213.172:39158^iprg:N/A|'
2015-10-27 15:50:49,994 [ListenerThread0] INFO  focus.Core.Server.Connection.DcmpConnection - |did:N/A^ep:01.60.213.172:39158^iprg:N/A|: Connection Established"

$toReplace = "2015-10-27"
$updateContent = [DateTime]::Now.Add(0).AddHours(0).AddMinutes(0).addseconds(0).toString()
$convertDate = ([datetime]::ParseExact($updateContent,"dd/MM/yyyy HH:mm:ss",$null))
$convertDate.year.toString() + "-" + $convertDate.month.toString() +"-"+ 
$convertDate.day.toString() + " " + $convertDate.Hour.toString() + ":" +$convertDate.Minute.toString() + ":" + $convertDate.Second.toString()

Add-Content -Value $content -Path $PATH

(Get-Content $PATH) | 
Foreach-Object {$_ -replace $toReplace,$updateContent}  | 
Out-File $PATH

Answer 1

好的，您应该能够根据此更改您需要的内容。我们所做的是编辑文件中的每一行。从每一行解析出数据......然后操纵所述日​​期并将其写回同一个文件。

在我的示例中，我们将日期转移到今天，同时保持原始时间戳的相同时间。

# file formatting. Note the space on the end is on purpose.
$formatting = "yyyy-MM-dd HH:mm:ss,fff "
$currentDate = Get-Date

(Get-Content $PATH) | Foreach-Object {
    # Split to get the date on the first occurrence of [.
    $parsed  = $_.split("[",2)
    # Convert to datetime
    $date = [datetime]::ParseExact($parsed[0], $formatting, $null)
    # Get the new time by adding the current date and the time from the parsed data
    $manipulated = $currentDate.Date + $date.TimeOfDay
    # Convert new time to the old format from file and append remainder of line from file.
    $manipulated.ToString($formatting) + "[" + $parsed[1]
} | Set-Content $PATH

基于 2015 年 11 月 1 日（今天）日期的示例数据输出

2015-11-01 15:50:21,900 [ListenerThread0] WARN  focus.Core.Server.States.InvalidIPRangeState - Begin 'InvalidIPRangeState' for application '|did:N/A^ep:10.160.210.222:40534^iprg:N/A|'
2015-11-01 15:50:21,900 [ListenerThread0] INFO  focus.Core.Server.Connection.DcmpConnection - |did:N/A^ep:01.60.210.222:40534^iprg:N/A|: Connection Established
2015-11-01 15:50:49,993 [12 ] INFO  focus.Core.Server.Connection.DcmpConnection - |did:N/A^ep:01.60.213.172:39158^iprg:N/A|: Connection Closed.  Reason: Socket closed by remote party (0-byte packet received)
2015-11-01 15:50:49,994 [ListenerThread0] WARN  focus.Core.Server.States.InvalidIPRangeState - Begin 'InvalidIPRangeState' for application '|did:N/A^ep:01.60.213.172:39158^iprg:N/A|'
2015-11-01 15:50:49,994 [ListenerThread0] INFO  focus.Core.Server.Connection.DcmpConnection - |did:N/A^ep:01.60.213.172:39158^iprg:N/A|: Connection Established

我看到您使用的是正则表达式。您可能在替换字符串中遇到了控制字符问题。我的方法不太容易出错，并且为日期操作开辟了更简单的方法。