解析来自 Json 个数据数据文件的值

Question

我需要将 JSON 文件加载到 powershell 中，然后处理 JSon 文件中的各个节点。该文件是从现有的 Json 文件加载的：

$JSONContent = (Get-Content -Path "C:\JsonFile.json" -Raw) | ConvertFrom-Json

加载后，我可以通过以下方式查看数据值：

$JSONContent | SELECT -expand Results

然后给我一个字段和值的列表格式。

我的问题是我想遍历 $JSONContent 对象并为每个逻辑记录（以逗号分隔）连接每个字段值以生成一个逗号分隔的字符串。

我确信答案很简单，但我已尝试解决这个问题。如果哪位好心人能帮忙解决一下，感激不尽

作为输入的 JSON 文件是：

{
  "results": [
    {
      "id": 1,
      "id2": null,
      "first_name": "Jeanette",
      "last_name": "Penddreth",
      "email": "jpenddreth0@census.gov",
      "gender": "Female",
      "ip_address": "26.58.193.2",
      "serverlist": [
        {
          "myval1": "testdata1",
          "myval2": "testdata2",
          "myval3": "testdata3"
        }
      ],
      "aitlist": [
        {
          "ait1": "aitdata1",
          "ait2": "aitdata2"
        }
      ]
    },
    {
      "id": 2,
      "first_name": "Giavani",
      "last_name": "Frediani",
      "email": "gfrediani1@senate.gov",
      "gender": "Male",
      "ip_address": "229.179.4.212",
      "serverlist": [
        {
          "myval1": "testdata5",
          "myval2": "testdata6",
          "myval3": "testdata7"
        },
        {
          "myval1": "testdata9",
          "myval2": "testdata10",
          "myval3": "testdata11"
        }
      ],
      "aitlist": [
        {
          "ait1": "aitdata3",
          "ait2": "aitdata4"
        }
      ]
    },
    {
      "id": 3,
      "first_name": "Noell",
      "last_name": "Bea",
      "email": "nbea2@imageshack.us",
      "gender": "Female",
      "ip_address": "180.66.162.255"
    },
    {
      "id": 4,
      "first_name": "Willard",
      "last_name": "Valek",
      "email": "wvalek3@vk.com",
      "gender": "Male",
      "ip_address": "67.76.188.26"
    }
  ]
}

objective 是将每个节点的值作为逗号分隔的字符串结束，使用第一条记录的示例：

1,"Jeanette","Penddreth","jpenddreth0@census.gov","Female", "26.58.193.2","testdata1","testdata2","testdata3","aitdata1","aitdata2"

Answer 1

以下命令递归遍历对象图中的所有数组和对象，这些对象是通过 ConvertFrom-Json 从您的 JSON 输入解析的，并输出每个对象的叶属性值（包含基本类型的值）作为逗号分隔的列表：

(Get-Content -Raw C:\JsonFile.json | ConvertFrom-Json).Results | ForEach-Object {
  # Helper script block that walks an object graph and outputs all leaf property values.
  $sb = {
    foreach ($el in @($args[0])) {
      if ($el -is [System.Management.Automation.PSCustomObject]) { # a complex object -> recurse
        foreach ($prop in $el.psobject.Properties) { & $sb $prop.Value } # recurse on the properties
      }
      else {
        $el # a leaf value -> output it
      }
    }
  }

  # Call the script block with the input object at hand and collect all values.
  $values = & $sb $_

  # Enclose string values in embedded "...", join with "," and output.
  $values.ForEach({ if ($_ -is [string]) { "`"$_`"" } else { $_} }) -join ','

}

^{注意：$args[0] 周围的 @(...) 是必需的，以确保 null JSON 值不会丢失。}

根据您的示例输入，这会产生：

1,"Jeanette","Penddreth","jpenddreth0@census.gov","Female","26.58.193.2","testdata1","testdata2","testdata3","aitdata1","aitdata2"
2,"Giavani","Frediani","gfrediani1@senate.gov","Male","229.179.4.212","testdata5","testdata6","testdata7","testdata9","testdata10","testdata11","aitdata3","aitdata4"
3,"Noell","Bea","nbea2@imageshack.us","Female","180.66.162.255"
4,"Willard","Valek","wvalek3@vk.com","Male","67.76.188.26"

解析来自 Json 个数据数据文件的值

Parsing Values From Json a data data file

powershell

formatting

json