在PowerShell中从csv创建特定的JSON文件

时间:2019-01-04 15:10:37

标签: json powershell csv

我没有使用PowerShell的经验,因此我被要求创建此脚本来吸引我的一个朋友。该脚本应读取一个csv文件(这些文件在time和host以外的其他列中是不同的,这在所有文件中都是相同的),然后将其内容输出到以下格式的JSON文件中:

CSV文件包含以下列:

主机|留言|时间|严重性来源|

{
"time": 1437522387,
"host": "dataserver992.example.com",
"event": { 
    "message": "Something happened",
    "severity": "INFO",
    "source": "testapp"
    #...All columns except for time and host should be under "event"
    }
}

*唯一保证的列是时间和主持人。所有其他列标题因文件而异。

这是我到目前为止的一部分:

$csvFile = Import-Csv $filePath


function jsonConverter($file)
{    
    #Currently not in use
    $eventString = $file| select * -ExcludeProperty time, host 


    $file | Foreach-Object {
        Write-Host '{'
        Write-Host '"host":"'$_.host'",'
        Write-Host '"time":"'$_.time'",'

        Write-Host '"event":{'

        #TODO: Put all other columns (key, values) under event - Except for 
        time and host

        Write-Host '}'
    }    
}

jsonConverter($csvFile)

关于如何只能逐行仅提取其余列,将其内容输出为键,值JSON格式的任何想法,如上面的示例所示? 谢谢!

2 个答案:

答案 0 :(得分:4)

提供的csv如下:

"host","message","time","severity","source"
"dataserver992.example.com","Something happened","1437522387","INFO","testapp"

此脚本:

$filepath = '.\input.csv'
$csvData = Import-Csv $filePath

$NewCsvData  = foreach($Row in $csvData){
   [PSCustomObject]@{
       time  =  $Row.time
       host  =  $Row.host
       event = ($Row| Select-Object -Property * -ExcludeProperty time,host)
   }
}

$NewCsvData | ConvertTo-Json

将输出此Json:

{
    "time":  "1437522387",
    "host":  "dataserver992.example.com",
    "event":  {
                  "message":  "Something happened",
                  "severity":  "INFO",
                  "source":  "testapp"
              }
}

答案 1 :(得分:0)

如果您的Powershell版本是3.0或更高(应该):

Import-CSV $filepath | ConvertTo-JSON

完成!