product-calendar/src/main/java/com/poyee/controller/TestController.java

package com.poyee.controller;

import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RestController;

@RestController
public class TestController {

    @GetMapping("/hello")
    public String helloWorld() {
        return "Hello World!";
    }
}