[FIXED] How to query data based based on different query parameter spring boot

Issue

I'm new to spring boot framework and i was developing spring boot rest API.

i have endpoint and i have query the database from spring boot

/buy?projectionId=value1&place=value2  // we can add different query parameters here

how to write a controller and service using spring boot.

Solution

you can pass multiple params in url like, for example:

http://localhost:2000/custom?brand=dell&limit=20&price=20000&sort=asc

and in order to get this query fields , you can use map like

@RequestMapping(method = RequestMethod.GET, value = "/custom")
public String controllerMethod(@RequestParam Map<String, String> customQuery) {

    System.out.println("customQuery = brand " + customQuery.get("brand"));
    System.out.println("customQuery = limit " + customQuery.get("limit"));
    System.out.println("customQuery = price " + customQuery.get("price"));
    System.out.println("customQuery = other " + customQuery.get("other"));
    System.out.println("customQuery = sort " + customQuery.get("sort"));

    return customQuery.toString();
}

Answered By - Nemanja
Answer Checked By - Mary Flores (JavaFixing Volunteer)