在字符串中搜索确定的单词

Question

我在一个简单的报告脚本中很吃力。例如

$report.FullFormattedMessage = "This is the deployment test for Servername for Stackoverflow in datacenter onTV"
$report.FullFormattedMessage.GetType()
IsPublic IsSerial Name                                     BaseType                                                                                                        
-------- -------- ----                                     --------                                                                                                        
True     True     String                                   System.Object  

现在我想挑选一些确定的单词，比如。。。

$dc = should be the 'onTV'
$srv = should be the 'Servername'
$srv = $report.FullFormattedMessage.contains... or -match ?? something like this?

.split()[]的技巧对我不起作用，因为$report有时看起来不一样。我怎么能那样做？

Answer 1

哦，好吧，我找到了一个解决方案，我不知道这是否是最好的。。。但我给你看：

$lines = $report.FullFormattedMessage.split() 
$dc= ForEach ($line in $lines){

$line | Where-Object {$_ -match "onTV*"} 
}

$srv= ForEach ($line in $lines){

$line | Where-Object {$_ -match "Server*"} 
}

Answer 2

我可能会做一些类似的事情

$report.FullFormattedMessage = "This is the deployment test for Servername for Stackoverflow in datacenter onTV"
$dc  = if ($report.FullFormattedMessage -match 'b(onTV)b') { $Matches[1] }        # see details 1
$srv = if ($report.FullFormattedMessage -match 'b(Server[w]*)') { $Matches[1] }   # see details 2
# $dc   --> "onTV"
# $srv  --> "Servername"

Regex详细信息1

b             Assert position at a word boundary
(              Match the regular expression below and capture its match into backreference number 1
onTV        Match the characters “onTV” literally
)             
b             Assert position at a word boundary

Regex详细信息2

b             Assert position at a word boundary
(              Match the regular expression below and capture its match into backreference number 1
Server      Match the characters “Server” literally
[w]        Match a single character that is a “word character” (letters, digits, etc.)
*        Between zero and unlimited times, as many times as possible, giving back as needed (greedy)
)