fullstack_practice/target/classes/com/curlCommand.md

CURL COMMAND TUTORIAL

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1.

curl http://localhost:7070/total

• What it does: Sends an HTTP GET request to your API’s /total endpoint.

• Purpose: Fetches the total profit so far from your server.

• Response you got:

  {"totalProfit":12000.0}
  

  This means the total sum of all purchased products recorded so far is ₹12,000.

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2.

curl http://localhost:7070/turl -X POST http://localhost:7070/purchase -H "Content-Type: application/json" -d '{"product":"Camera Drone","price":12000}'

• What you tried to do: Looks like you tried to send a POST request to /purchase to add a new product "Camera Drone" priced at 12000.

• Why it’s wrong / problematic: The syntax is incorrect and malformed. You are mixing a GET request to /turl with -X POST http://localhost:7070/purchase, which doesn’t make sense for curl. The command has extra URL (http://localhost:7070/purchase) placed incorrectly after -X POST, which should only be followed by the HTTP method, not another URL.

• Correct form:

  curl -X POST http://localhost:7070/purchase -H "Content-Type: application/json" -d '{"product":"Camera Drone","price":12000}'
  

• This correctly sends a POST request to /purchase endpoint with a JSON body specifying the product and price.

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Summary of key curl options used:

• curl [URL] — by default, sends a GET request to the URL.

• -X POST — explicitly sets HTTP method to POST (used to send data).

• -H "Content-Type: application/json" — adds HTTP header specifying the request body is JSON.

• -d '{"product":"Camera Drone","price":12000}' — the JSON data to send in the body of the POST request.

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If you want to test adding a new purchase and then check total, this sequence is correct:

curl -X POST http://localhost:7070/purchase -H "Content-Type: application/json" -d '{"product":"Camera Drone","price":12000}'
curl http://localhost:7070/total

This will record the new product and then return the updated total profit.

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If you want, I can help you build some shell scripts or alias commands to make testing easier! Just say the word.