cURL command works in git bash but not in cmd and powershell

Question

The folowing command works in git bash but not in cmd and powershell

curl -X POST http://localhost:5678/api/findgen -H 'Content-Type: application/json' -d '{"a": "Val 1","b": "Val 2","c": "Val 3","d": "Val 4"}' -o "file.json"

I get error in cmd such as -

curl: (6) Could not resolve host: application

curl: (6) Could not resolve host: Val 1,b

curl: (6) Could not resolve host: Val 2,c

curl: (6) Could not resolve host: Val 3,d

curl: (3) [globbing] unmatched close brace/bracket in column 6

What can be the issue?

Answer 1

Just read the error message:

Invoke-WebRequest Cannot bind parameter 'Headers'. Cannot convert the "Content-Type: application/json" value of type "System.String" to type "System.Collections.IDictionary".

In PowerShell, curl is an alias for the Invoke-WebRequest cmdlet. As the error points it out, the Header parameter must be a IDictionary, not a string. This is how it looks like in PowerShell:

@{"Content-Type"= "application/json"}

Some parameters are also different. This is how I would script the request:

Invoke-WebRequest `
    -Uri "http://localhost:5678/api/findgen" `
    -Headers @{"Content-Type"= "application/json"} `
    -Body '{"a": "Val 1","b": "Val 2","c": "Val 3","d": "Val 4"}' `
    -OutFile "file.json" `
    -Method Post