import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.context.annotation.ComponentScan;@SpringBootApplication
@ComponentScan("com.course.server")     //需要扫描的包
public class Application {public static void main(String[] args) {SpringApplication.run(Application.class,args);}
}

package com.course.server;import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.RestController;
import javax.servlet.http.Cookie;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.util.Objects;@RestController    //被告诉我是你需要扫描的类
public class MyGetMethod { @RequestMapping(value = "/getCookies",method = RequestMethod.GET)    //访问的路径是什么，用到什么样的方法public String getCookies(HttpServletResponse response){//HttpServerletRequest    装请求信息//HttpServerletResponse   装响应信息Cookie cookie = new Cookie("login","ture");  //定义一个cookies信息response.addCookie(cookie);return "恭喜你获得cookies信息成功";}

    @RequestMapping(value = "/get/with/cookies",method = RequestMethod.GET)public String getWithCookies(HttpServletRequest request){        Cookie[] cookies = request.getCookies();  //从请求中获取cookies信息if(Objects.isNull(cookies)){return "你必须携带cookies信息来";        }

 for(Cookie cookie : cookies){if(cookie.getName().equals("login") && cookie.getName().equals("true")){return "恭喜你访问成功";            }        }return "你必须携带cookies信息来";    }}