Question

我有这个文件.json：

{
  "topologyTypes": {
    "stations": {
      "instances": [
        {
          "@name": "value1",
          "@address": "value2"
        },
        {
          "@name": "value3",
          "@address": "value4"
        }         
      ]
    }
  },
  "agg": {},
  "inter": {}
}

我想在topologyType.stations.instances中使用PowerShell

添加这样的对象

{
    "@name": "value4",
    "@adress": "value5"
}

所以我在PowerShell中尝试了以下代码，但它不起作用：

$path = "./data.json"
$jsonFile = Get-Content $path -Raw | ConvertFrom-Json

$jsonContent = @"
    {
        "@name": "value4",
        "@adress": "value5"
    }
"@

$jsonFile.topologyTypes.stations.instances |
    Add-Content -Value (ConvertFrom-Json $jsonContent)

我想要的输出是这样的：

{
  "topologyTypes": {
    "stations": {
      "instances": [
        {
          "@name": "value1",
          "@address": "value2"
        },
        {
          "@name": "value3",
          "@address": "value4"
        },
        {
          "@name": "value4",
          "@address": "value5"
        }         
      ]
    }
  },
  "agg": {},
  "inter": {}
}

Answer 1

将新内容定义为PowerShell自定义对象：

$jsonContent = [PSCustomObject]@{
    '@name'   = 'value4'
    '@adress' = 'value5'
}

将其附加到导入的JSON数据的instances子结构中：

$jsonFile.topologyTypes.stations.instances += $jsonContent

然后将数据转换回JSON字符串：

$jsonFile | ConvertTo-Json -Depth 4

请注意，ConvertTo-Json会插入大量意图空间。如果你想要你发布的格式，你需要自己做一些漂亮的打印。像this这样的东西可能会有所帮助。

如何在解析的JSON上添加数组中的对象？

1 个答案: