使用 powershell 编辑 .json 文件

Question

我有一个 .json 文件需要在用户数据中进行编辑，因此我必须使用 powershell 来完成此操作。 json 看起来像这样：

{
"EngineConfiguration": {
    "PollInterval": "00:00:15",
    "Components": [
        {
            "Id": "CustomLogs",
            "FullName": "AWS.EC2.Windows.CloudWatch.CustomLog.CustomLogInputComponent,AWS.EC2.Windows.CloudWatch",
            "Parameters": {
                "LogDirectoryPath": "C:\CustomLogs\",
                "TimestampFormat": "MM/dd/yyyy HH:mm:ss",
                "Encoding": "UTF-8",
                "Filter": "",
                "CultureName": "en-US",
                "TimeZoneKind": "Local"
            }
        }
    ],
    "Flows": {
        "Flows": 
        [
            "(ApplicationEventLog,SystemEventLog),CloudWatchLogs"
            ]
        }
    } 
}

我希望它看起来像这样 --

{
"EngineConfiguration": {
    "PollInterval": "00:00:15",
    "Components": [
        {
            "Id": "CustomLogs",
            "FullName": "AWS.EC2.Windows.CloudWatch.CustomLog.CustomLogInputComponent,AWS.EC2.Windows.CloudWatch",
            "Parameters": {
                "LogDirectoryPath": "C:\ProgramData\Amazon\CodeDeploy\deployment-logs",
                "TimestampFormat": "[yyyy-MM-dd HH:mm:ss.fff]",
                "Encoding": "UTF-8",
                "Filter": "",
                "CultureName": "en-US",
                "TimeZoneKind": "Local"
            }
        }
    ],
    "Flows": {
        "Flows": 
        [
            "(ApplicationEventLog,SystemEventLog, CustomLogs),CloudWatchLogs"
            ]
        }
    } 
}

在自定义日志参数中，LogDirectoryPath 和 TimestampFormat 都已更改。此外，在流程部分，我已将 'CustomLogs' 添加到 CloudWatch 组。

我试着让它与这样的代码一起工作：

$a = Get-Content 'C:\PATH\TO\file.json' -raw | ConvertFrom-Json
$a.EngineConfiguration.Components[0].Parameters = '{"LogDirectoryPath": "","TimestampFormat": "[yyyy-MM-dd HH:mm:ss.fff]","Encoding": "UTF-8","Filter": "","CultureName": "en-US","TimeZoneKind": "Local"}'
$a | ConvertTo-Json | set-content 'C:\PATH\TO\output.json'

但这会产生非常丑陋的输出

{
"EngineConfiguration":  {
                            "PollInterval":  "00:00:15",
                            "Components":  [
                                               "@{Id=CustomLogs; FullName=AWS.EC2.Windows.CloudWatch.CustomLog.CustomLogInputComponent,AWS.EC2.Windows.CloudWatch; Parameters={\"LogDirectoryPath\": \"\",\"TimestampFormat\": \"[yyyy-MM-dd HH:mm:ss.fff]\",\"Encoding\": \"UTF-8\",\"Filter\": \"\",\"CultureName\": \"en-US\",\"TimeZoneKind\": \"Local\"}}",
                                               "@{Id=CloudWatchLogs; FullName=AWS.EC2.Windows.CloudWatch.CloudWatchLogsOutput,AWS.EC2.Windows.CloudWatch; Parameters=}"
                                           ],
                            "Flows":  {
                                          "Flows":  "(ApplicationEventLog,SystemEventLog),CloudWatchLogs"
                                      }
                        }
}

有没有更优雅的方法来做到这一点？任何建议将不胜感激。谢谢！

Answer 1

可以使用正则表达式减少前导空格。但是，这并没有真正产生您所说的重新格式化、漂亮的打印效果。

$a | ConvertTo-Json | % {$_ -replace "        ","  "} | set-content 'output.json'

Answer 2

尝试对 ConvertTo-Json 使用 -Depth 开关。默认情况下，这会将深度超过 2 的任何子元素压缩为您看到的对象的字符串表示形式：

"@{Id=CustomLogs; etc."

通过指定更深的深度，您可以获得更像您想要的格式。将它与压缩过多空白的东西结合起来：

((ConvertFrom-Json $a) | ConvertTo-Json -Depth 4) -replace ((" "*4)," ")

使用 powershell 编辑 .json 文件

Editing a .json file using powershell

json

windows

powershell

user-data