Скачать или смотреть Exporting Nested Json Values to CSV using PowerShell

Discover how to extract `nested json values to CSV` using PowerShell with clear step-by-step instructions and sample code!
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This video is based on the question https://stackoverflow.com/q/73898798/ asked by the user 'Ben S' ( https://stackoverflow.com/u/20114824/ ) and on the answer https://stackoverflow.com/a/73898987/ provided by the user 'Santiago Squarzon' ( https://stackoverflow.com/u/15339544/ ) at 'Stack Overflow' website. Thanks to these great users and Stackexchange community for their contributions.

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Exporting Nested Json Values to CSV using PowerShell

Are you struggling to extract specific values from multiple JSON config files and export them into a CSV format? If you need to loop through a list of JSON files to pull out properties such as name, entity_id, contact_info, and sp_endpoint, you’re in the right place! In this guide, we will walk you through an effective solution using PowerShell.

Understanding the Problem

Imagine you have a series of JSON files structured like this:

[[See Video to Reveal this Text or Code Snippet]]

You want to extract specific values from these JSON files, but your current PowerShell script isn't working as intended. It’s dumping empty values and struggling to handle multiple files. The desired output format is something similar to this:

[[See Video to Reveal this Text or Code Snippet]]

Here's the Solution

To achieve the extraction of desired values from your JSON files, you can adapt your approach as follows. This method assumes your JSON files have a single parent property, like sfg_ping::qa::standard_sp_connections. Let's break this down step-by-step.

Step 1: Read the JSON Files

Use the Get-ChildItem cmdlet to retrieve all JSON files from a specified directory.

Step 2: Parse the JSON Content

For each file, you will read its content, convert it from JSON format, and then select the desired properties.

Step 3: Prepare the Export

Finally, pipe the results to the Export-Csv cmdlet to create your desired CSV output.

Example Code

Here’s the complete PowerShell script for the task:

[[See Video to Reveal this Text or Code Snippet]]

Explanation of the Code

Get-ChildItem: This cmdlet retrieves all JSON files from the specified path. The -Filter parameter makes sure only JSON files are picked.

ForEach-Object: Loops through each file. The $_ represents the current file in the pipeline.

Get-Content: Reads the raw content from each JSON file.

ConvertFrom-Json: Converts the JSON content into a PSObject (PowerShell Object).

Select-Object: Selects and renames the properties you want, including adding the filename.

Export-Csv: Exports the results into a CSV file, while -NoTypeInformation ensures that type information is not included in the output.

Conclusion

This method will effectively handle bulk JSON files, extracting the desired values, and placing them into a structured CSV. If your JSON files have more than one parent property or varied structures, you may need to adjust the code accordingly. By implementing these clear steps, you'll be on your way to mastering JSON parsing with PowerShell!

Feel free to modify the script to suit your specific JSON structure and let it streamline your data processing tasks.