Let's perform user CRUD operations. As we have discussed CRUD concepts before, here we will only discuss User management on Spring 5 (without Reactive support). Let's fill in all dummy methods for CRUD endpoints. In here, we can create UserContoller and fill in all methods for CRUD user operations:
package com.packtpub.restapp;
import java.util.LinkedHashMap;
import java.util.Map;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.ResponseBody;
import org.springframework.web.bind.annotation.RestController;
@RestController
@RequestMapping("/user")
public class UserController {
@ResponseBody
@RequestMapping("")
public Map<String...
