Rest Get: How to add “URL with Query Parameters” in Query Parameters of a URL?

Question

I have got requirements like below:

 /paymenturl?ordernr=123&amount=234&ourOwnCallbackUrl=$api/receipt?contractid=3232&callbackurl=https://somthing.com&fallbackurl=https:something.com&notification=hit-hard

1. Is it possible to add url in query parameter? (callbackUrl)
2. Is it possible to add Step 1 into value of Query Parameter? (ourOwnCallbackUrl)
3. Is it possible to add Step1 in Step 2 to main url? (/paymenturl)

The question is basically how to add another URL to query parameter and can it be nested further?

Answer 1

you have to escape the special characters (like & ) I see two common ways:

• encode it in percent-encoded

  %20%2Fpaymenturl%3Fordernr%3D123%26amount%3D234%26ourOwnCallbackUrl%3D%24api%2Freceipt%3Fcontractid%3D3232%26callbackurl%3Dhttps%3A%2F%2Fsomthing.com%26fallbackurl%3Dhttps%3Asomething.com%26notification%3Dhit-hard

• or you can create a complete DTO (Data transfer object ) and use the request body to send/receive it from your controller.