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Powershell: How to Update/Replace data and values in Json and XML Object
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Closed 4 years ago.
Hello I am trying to modify a JSON file by using PowerShell. I want to pass a variable from PowerhShell that will replace two values(Placeholder1 and Placeholder2)in the JSON file. I have the following for the first value which is not working.
PowerShell
$a = Get-Content $pathToJson -raw | ConvertFrom-Json
$a.update | % {if($_.name -eq 'placeholder1'){$_.name=$record_name}}
$a | ConvertTo-Json -Depth 20 | set-content $pathToJson
JSON
{
"Comment": "Update record for Route 53",
"Changes": [
{
"Action": "UPSERT",
"ResourceRecordSet": {
"Name": "placeholder1",
"Type": "CNAME",
"TTL": 300,
"ResourceRecords": [
{
"Value": "placeholder2"
}
]
}
}
]
}
Instead of converting to-and-from JSON, you can try just replacing the text, like this:
(Get-Content $pathToJson).Replace("placeholder1", $record_name) | Set-Content $pathToJson
You can chain the .Replace() function with another to update placeholder2 with whatever value it should be then.
Related
I am importing JSON into Powershell to replace some values, but I also need to remove some objects from there.
Import:
$fileJson = Get-Content -path/Template.json -Encoding UTF8
I have an array of object which looks like this:
{
"resources": [
{
"name": "name1"
"type": "type1"
"....": "....."
},
{
"name": "name2"
"type": "type2"
"....": "....."
},
{
"name": "name3"
"type": "type1"
"....": "....."
}
]
}
and I want to remove a specific object from this array of objects. For example I want to remove Object where "type" equals "type2".
I have already tried to replace values with .Replace, however I can only replace single values and not the complete object.
Is it possible to delete or skip entire object with condition?
Convert the JSON to a custom object:
$fileJson = Get-Content -path/Template.json -Encoding UTF8
$data = $fileJson |ConvertFrom-Json
Use Where-Object to filter the resources array:
$data.resources = #($data.resources |Where-Object type -ne type2)
Convert the now modified object back to JSON and write to disk:
$data |ConvertTo-Json |Set-Content ./path/to/updatedTemplate.json -Encoding UTF8
I suggest to convert json into PowerShell objects, then make desired changes. then convert back to json if needed.
Example
$root = Get-Content -Path "C:\source.json" | ConvertFrom-Json
$root.resources = $root.resources | where type -eq 'type2'
$root | ConvertTo-Json -Depth 5 | Out-File "C:\destination.json"
I have following JSON and I would like to remove streets from the JSON object if only it exists under Address which is an array. I am trying to do this in powershell. I can get my script working and remove the streets but I only want to run the exclude line of command if the address has the streets property. Is that possible?
{
"Customer": [{
"id": "123"
}],
"Nationality": [{
"name": "US",
"id": "456"
}],
"address": [{
"$type": "Home",
"name": "Houston",
"streets": [{
"name": "Union",
"postalCode": "10"
}]
},
{
"$type": "Home5",
"name": "Houston5"
},
{
"$type": "Office",
"name": "Hawai",
"streets": [{
"name": "Rock",
"postalCode": "11"
}]
}
]
}
Powershell script
$FileContent = Get-Content -Path "Test.json" -Raw | ConvertFrom-Json
#Only want to run for address objects that contains streets
$FileContent.address = $FileContent.address | Select-Object * -ExcludeProperty streets #Only would like to run if object address has streets property
$FileContent | ConvertTo-Json
Note:
This answer performs the same operation as in the question, only more succinctly, in a single pipeline.
It is benign to run Select-Object * -ExcludeProperty streets against all objects in array address, because the call is an effective no-op for those objects that already lack a streets property (though a copy of such objects is created too).
You need an assignment to modify your objects in-place before outputting them, which requires a ForEach-Object call:
Get-Content -Raw Test.json | ConvertFrom-Json |
ForEach-Object {
[array] $_.address = $_.address | select * -exclude streets; $_
}
Note how each object parsed from the JSON input is first modified via the assignment ($_.address = ...), and then passed out ($_).
A more efficient, but a little more obscure variant:
Get-Content -Raw Test.json | ConvertFrom-Json |
ForEach-Object {
$_.address.ForEach({ $_.psobject.Properties.Remove('streets') }); $_
}
With your sample JSON input, both commands output the following:
Customer Nationality address
-------- ----------- -------
{#{id=123}} {#{name=US; id=456}} {#{$type=Home; name=Houston}, #{$type=Home5; name=Houston5}, #{$type=Office; name=Hawai}}
Note how the objects in the address column no longer have a streets property.
Caveat: Note that ConvertTo-Json limits the serialization depth to 2 by default, which is sufficient in this case, but in other cases you may have to pass a -Depth argument to prevent data loss - see this post.
I have one json file mytest.json like below I want to update values using PowerShell script
update.json
{
"update": [
{
"Name": "test1",
"Version": "2.1"
},
{
"Name": "test2",
"Version": "2.1"
}
]
}
I want to write a PowerShell script where if Name=="test1" I want to update Version= "3"
How can i do it using parameters?
Here is a way :
$a = Get-Content 'D:\temp\mytest.json' -raw | ConvertFrom-Json
$a.update | % {if($_.name -eq 'test1'){$_.version=3.0}}
$a | ConvertTo-Json -depth 32| set-content 'D:\temp\mytestBis.json'
According to #FLGMwt and #mikemaccana I improve the ConvertTo-Json with -depth 32 because the default depth value is 2 and for object deeper than 2 you will receive class informations in spite of objects.
I have also faced the same kind of issue. I was looking to change the records of the below JSON file
{
"SQS_QUEUE_URL": "https://que-url.com/server1",
"SQS_EVENTS_QUEUE_URL": "https://events-server.com/server1/development_events",
"REGION": "region1",
"BUCKET": "test-bucket",
"AE_WORK_PATH": "C:\\workpath\\path1",
"ENV": "env"
}
Finally, I managed to find the easiest way to generate a JSON file from Powershell.
$json = Get-Content "c:\users\bharat.gadade\desktop\test.json" | ConvertFrom-Json
$json.SQS_QUEUE_URL = "https://que-url.com/server2"
$json.SQS_EVENTS_QUEUE_URL = "https://events-server.com/Server2/development_events"
$json.REGION = "region1 "
$json.BUCKET = "test-bucket"
$json.AE_WORK_PATH = "C:\workpath\path1"
$json.ENV = "env"
$json | ConvertTo-Json | Out-File "c:\users\bharat.gadade\desktop\test.json"
I have a JSON data structured as following (there may be some mistakes here, the data I'm using is fine):
[{
"id": 12345,
"itemName": "some string",
"sellerId": 123,
"seller": "",
"categoryId": ,
"categoryPath": [
{
//more data
},
{
//more data
}
]},
{"id": 12346,
"itemName": "some other string",
"sellerId": 234,
"seller": "",
"categoryId": ,
"categoryPath": [
{
//more data
},
{
//more data
}
]
}]
I would like to convert it to csv so that the selected property names become csv headers and their value (depth 1 only) become data.
e.g
id,itemName,sellerId
12345,"some string",123
12346,"some other string",234
I've tried using hundreds of variations of
cat file.json | convertfrom-json | convertto-csv
but none have worked. All I get is csv data with objects names/types and I can't figure out how to make it use only selected properties of each object from json data.
In short you need to do something like this:
(Get-Content file.json -Raw | ConvertFrom-Json) | Select id,itemName,sellerId | Convertto-CSV -NoTypeInformation
The first problem was that Get-Content was passing individual lines to ConvertFrom-Json which is not what it wants. Using the -Raw switch passes it in its entirety.
The (Get-Content file.json -Raw | ConvertFrom-Json) needs to be in parentheses as that allows us to continue with the pipe. The properties are not accessible without doing this. It looks like it is trying to pass the entire object instead of its individual parts down the pipe.
-NoTypeInformation removes lines like this
#TYPE Selected.System.Management.Automation.PSCustomObject
I have converted the following JSON file to powershell representation object.
{
"computer": [
{
"children": [
{
"children": [ {
"children": [ {
"path": "T:\Dropbox\kvaki.html",
"name": "kvaki",
"type": "url",
"url": "http://example.com"
} ],
"path": "T:\Dropbox\",
"name": "Njusha",
"type": "folder"
}, {
"path": "T:\Dropbox\Europa.html",
"name": "Europa",
"type": "url",
"url": "http://example.com"
}, {
"path": "T:\Dropbox\math.html",
"name": "math",
"type": "url",
"url": "http://example.com"
} ],
"path": "T:\Dropbox\",
"name": "Money",
"type": "folder"
}
],
"full_path_on_file_sys": "T:\Dropbox\"
}
]
}
After doing some computations with powershell representation I would like to save it to file as JSON.
But command $jsonRepresentation | ConvertTo-Json | Out-File "D:\dummy_path\file.json" saves it in this way
{
"computer": [
{
"children": " ",
"full_path_on_file_sys": "T:\Dropbox\"
}
]
}
Question: how to achieve correct saving of complex powershell JSON representation?
-depth argument for ConvertTo-Json solves the issue.
$jsonRepresentation | ConvertTo-Json -depth 100 | Out-File "D:\dummy_path\file.json"
Just pipe it to Set-Content, or Out-File:
Get-Process powershell |
ConvertTo-Json |
Set-Content json.txt
If you want to both view the output and save it to file, you can pipe the tee command.
Get-Process powershell | ConvertTo-Json | Tee-Object json.txt
$json.properties.metadata | ConvertTo-Json -Compress
if you are stuck with PowerShell Version 2, the JSON module of Joel Bennett from the 'PowerShell Code Repository' might help.
1) The below command can be used to convert a json to CSV
Example:
Get-Content package.json | Out-String | ConvertFrom-Json | Select parameter1, parameter2, parameter3 | ConvertTo-Csv -NoTypeInformation | Format-Table >> C:\JenkinsWorkspace\Result.csv
Get-Content: This is like "cat" command in linux which will get all data of file "package.json" and converts from Json (Using ConvertFrom-Json function) extracting the details of only required parameters and then converting them into CSV using "ConvertTo-Csv" function without any unwanted Type Headers and formatting them into Table.
2) The above result can also be formatted into proper csv to view it as Excel format without any duplicates and also having Text-To-Column conversion using below command:
Import-Csv "C:\Result.csv" -delimiter "," | Sort-Object _from -Unique | Export-csv "C:\FINAL_REPORT_$date.csv"