* 예시 코드 package com.group.libraryapp.controller.calculator; import com.group.libraryapp.dto.calculator.request.CalculatorAddRequest; import com.group.libraryapp.dto.calculator.request.CalculatorMultiplyRequest; import org.springframework.web.bind.annotation.*; @RestController public class CalculatorController { @GetMapping("/add") // GET /add public int addTwoNumbers(CalculatorAddRequest request..