Springboot 2.返回cookies信息的get接口开发和带cookis去请求

首先要有一个启动类，默认的启动类的名字就是Application.java。启动的时候直接右键点击run就可以

Application.java：

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);
    }
}

新建一个类，为了验证get接口测试

MyGetMethod.java

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";
    }
}