How to combine JSON values in the response using Java-CodePudding

I am currently working on a school project. We have a series of response templates in JSON format that will take values from the request and then return it accordingly in the response when run in postman.

e.g Request: { "Application_id":123456 }

Response: { "Application_id: 123456, TIMESTAMP: 20220501}

I am able to get these values in the response but the issue I am running accross now is figuring out how to combine 2 values in the request into one like so:

Request: { "Application_id":123456 "user_id_first_six": 456789 "user_id_last_four": 1234 }

Expected Response: { "Application_id: 123456, TIMESTAMP: 20220501, combined_id:456789****1234}

what I have tried is to put combined_id : "user_id_first_six" ****** "user_id_last_four" but this doesnt work.

Apologies if I cant be more specific as there are portions that I have left out due to confidentiality issues.

CodePudding user response：

The easiest way to achieve this in Java would be to use JSONObject. In your Request-Handler, add two parameters of Type JSONObject and then merge them:

jsonObj.putAll(jsonObj1)

CodePudding user response：

Thanks all for the guidance. I basically did what Knu8 suggested and extracted the values using Matcher Regex (<(.*)>)(\W*)(<(.*)>) and converted them to strings and then used StringBuilder to append all the components together.