PowerShell如何在已解析的JSON上添加内容? [英] PowerShell how to add something on parsed JSON?

问题描述

我想使用PowerShell在我解析的JSON中添加一些内容.我的代码:

I want to add something in my parsed JSON using PowerShell. My code:

function ConvertFromJson([string]$file)
{
    [System.Reflection.Assembly]::LoadWithPartialName("System.Web.Extensions")
    $jsoncontent = Get-Content $file
    $jsonobj = New-Object System.Web.Script.Serialization.JavaScriptSerializer
    $global:json = $jsonobj.DeserializeObject($jsoncontent)
}

我的JSON:

{
  "BlockA": {
    "BlockB": {
      "name": "BlockB",
      "value": "Value_B"
    },
}

我想像这样制作BlockC:

I want make BlockC like this:

{
  "BlockA": {
    "BlockB": {
      "name": "BlockB",
      "value": "Value_B"
    },
    "BlockC": {
      "name": "BlockC",
      "value": "Value_C"
    },
}

我尝试过

$json.BlockA.Add("BlockC", "")

和

$json.BlockA.BlockC.Add("name", "BlockC")

但不适用于该错误:

没有添加方法

there is no add method

我尽我所能(尝试添加方法，使用添加成员)，但是都失败了.

I tried all of i can do (trying Add Method, use Add-Member), but all failed.

添加: PS C:\ Users \ Develop7> $ json.BlockA.BlockC |获得会员

added : PS C:\Users\Develop7> $json.BlockA.BlockC | Get-Member

   TypeName: System.String

Name             MemberType            Definition
----             ----------            ----------
Clone            Method                System.Object Clone()
CompareTo        Method                int CompareTo(System.Object value), int CompareTo(string strB)
Contains         Method                bool Contains(string value)
CopyTo           Method                System.Void CopyTo(int sourceIndex, char[] destination, int destinationIndex,...
EndsWith         Method                bool EndsWith(string value), bool EndsWith(string value, System.StringCompari...
Equals           Method                bool Equals(System.Object obj), bool Equals(string value), bool Equals(string...
GetEnumerator    Method                System.CharEnumerator GetEnumerator()
GetHashCode      Method                int GetHashCode()
GetType          Method                type GetType()
GetTypeCode      Method                System.TypeCode GetTypeCode()
IndexOf          Method                int IndexOf(char value), int IndexOf(char value, int startIndex), int IndexOf...
IndexOfAny       Method                int IndexOfAny(char[] anyOf), int IndexOfAny(char[] anyOf, int startIndex), i...
Insert           Method                string Insert(int startIndex, string value)
IsNormalized     Method                bool IsNormalized(), bool IsNormalized(System.Text.NormalizationForm normaliz...
LastIndexOf      Method                int LastIndexOf(char value), int LastIndexOf(char value, int startIndex), int...
LastIndexOfAny   Method                int LastIndexOfAny(char[] anyOf), int LastIndexOfAny(char[] anyOf, int startI...
Normalize        Method                string Normalize(), string Normalize(System.Text.NormalizationForm normalizat...
PadLeft          Method                string PadLeft(int totalWidth), string PadLeft(int totalWidth, char paddingChar)
PadRight         Method                string PadRight(int totalWidth), string PadRight(int totalWidth, char padding...
Remove           Method                string Remove(int startIndex, int count), string Remove(int startIndex)
Replace          Method                string Replace(char oldChar, char newChar), string Replace(string oldValue, s...
Split            Method                string[] Split(Params char[] separator), string[] Split(char[] separator, int...
StartsWith       Method                bool StartsWith(string value), bool StartsWith(string value, System.StringCom...
Substring        Method                string Substring(int startIndex), string Substring(int startIndex, int length)
ToCharArray      Method                char[] ToCharArray(), char[] ToCharArray(int startIndex, int length)
ToLower          Method                string ToLower(), string ToLower(System.Globalization.CultureInfo culture)
ToLowerInvariant Method                string ToLowerInvariant()
ToString         Method                string ToString(), string ToString(System.IFormatProvider provider)
ToUpper          Method                string ToUpper(), string ToUpper(System.Globalization.CultureInfo culture)
ToUpperInvariant Method                string ToUpperInvariant()
Trim             Method                string Trim(Params char[] trimChars), string Trim()
TrimEnd          Method                string TrimEnd(Params char[] trimChars)
TrimStart        Method                string TrimStart(Params char[] trimChars)
Chars            ParameterizedProperty char Chars(int index) {get;}
Length           Property              System.Int32 Length {get;}

推荐答案

如果您使用的是PowerShell 3.0/4.0，则可以使用

If you're using PowerShell 3.0/4.0 you can simplify your conversion using the ConvertFrom-Json cmdlet.

除此之外，如果您具有PS或.Net对象类型，则Add-Member cmdlet允许您添加任意属性.下面显示了如何基于Json块添加属性:

Beyond that, if you have PS or .Net Object Types, the Add-Member cmdlet allows you to add arbitrary properties. The following shows how to add a property based on a Json block:

$json = @"
{
  "BlockA": {
    "BlockB": {
      "name": "BlockB",
      "value": "Value_B"
    }
  }
}
"@

$blockcvalue =@"
    {
    "name":"BlockC",
    "value":"ValueC"
    }
"@

$jobj = ConvertFrom-Json -InputObject $json

$jobj.BlockA | add-member -Name "BlockC" -value (Convertfrom-Json $blockcvalue) -MemberType NoteProperty

write-host (ConvertTo-Json $jobj)

这篇关于PowerShell如何在已解析的JSON上添加内容?的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！