Convert an XML File to JSON via Webhook Call

This n8n workflow provides a robust solution for receiving XML data via a webhook, converting it into JSON format, and optionally sending it to a Slack channel. It also includes error handling to notify a Slack channel if the conversion fails.

What it does

1. Listens for incoming XML data: The workflow is triggered by an HTTP POST request to a webhook URL.
2. Extracts file content: It attempts to extract the file content from the incoming webhook data.
3. Converts XML to JSON: The extracted XML data is then parsed and converted into a structured JSON object.
4. Responds to the webhook: The converted JSON data is sent back as the response to the original webhook call.
5. Handles successful conversion (optional): If the XML to JSON conversion is successful, the resulting JSON data is formatted and sent as a message to a specified Slack channel.
6. Handles conversion errors (optional): If the XML to JSON conversion fails, an error message is formatted and sent to a specified Slack channel, including details about the error.

Prerequisites/Requirements

• n8n Instance: A running n8n instance to import and execute the workflow.
• Slack Account: (Optional) A Slack account and a configured Slack credential in n8n if you wish to receive notifications for successful conversions or errors.

Setup/Usage

1. Import the workflow:
   • Download the provided JSON file for this workflow.
   • In your n8n instance, click on "Workflows" in the left sidebar.
   • Click "New" and then "Import from JSON".
   • Paste the workflow JSON or upload the file.
2. Configure the Webhook Trigger:
   • The "Webhook" node is already configured to listen for POST requests.
   • Activate the workflow. Once active, n8n will provide a unique URL for this webhook. This is the URL you will send your XML data to.
3. Configure Slack (Optional):
   • If you want to receive Slack notifications, you will need to set up a Slack credential in n8n.
   • Click on the "Slack" nodes (there are two: one for success, one for error).
   • In the "Credential" field, select your existing Slack credential or create a new one.
   • Specify the "Channel" where you want the messages to be posted.
   • Customize the message content in the "Text" field if desired.
4. Test the workflow:
   • Send an HTTP POST request with an XML file in the body to the webhook URL obtained in step 2.
   • Observe the execution in n8n and check your Slack channel (if configured) for notifications.

Example POST Request (using curl):

curl -X POST \
  YOUR_WEBHOOK_URL \
  -H 'Content-Type: application/xml' \
  -d '<root><item>Value1</item><item>Value2</item></root>'

Replace YOUR_WEBHOOK_URL with the actual URL provided by your n8n Webhook node.