36-SpringBoot 整合SpringSession实现跨服务共享session

1.相关介绍

对于session无法跨服务, 跨域名使用的问题, 我们可以使用SpringSession将session保存在中间件中(比如redis), 从而实现了session的共享.

浏览器cookie保存一个session的key, 如图就是叫jsessionid, 这个key就对应着redis中的session, 用来标识一个用户

2.整合步骤

1.添加依赖

        
        <dependency>
            <groupId>org.springframework.sessiongroupId>
            <artifactId>spring-session-data-redisartifactId>
        dependency>
        <dependency>
            <groupId>org.springframework.bootgroupId>
            <artifactId>spring-boot-starter-data-redisartifactId>
        dependency>

2.编写配置

application.properties

spring.redis.host=192.168.56.103
spring.redis.port=6379

spring.session.store-type=redis
server.servlet.session.timeout=30m

GulimallSessionConfig

package com.atguigu.gulimall.auth.config;

import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.data.redis.serializer.GenericJackson2JsonRedisSerializer;
import org.springframework.data.redis.serializer.RedisSerializer;
import org.springframework.session.web.http.CookieSerializer;
import org.springframework.session.web.http.DefaultCookieSerializer;
import org.springframework.session.data.redis.config.annotation.web.http.EnableRedisHttpSession;

@EnableRedisHttpSession  //整合redis作为session存储
@Configuration
public class GulimallSessionConfig {

    @Bean
    public CookieSerializer cookieSerializer(){
        DefaultCookieSerializer cookieSerializer = new DefaultCookieSerializer();

        cookieSerializer.setDomainName("gulimall.com");
        cookieSerializer.setCookieName("GULISESSION");

        return cookieSerializer;
    }

    @Bean
    public RedisSerializer<Object> springSessionDefaultRedisSerializer() {
        return new GenericJackson2JsonRedisSerializer();
    }
}

3.具体使用

    @PostMapping("/login")
    public String login(UserLoginVo vo,RedirectAttributes redirectAttributes,
                        HttpSession session){


        //远程登录
        R login = memberFeignService.login(vo);
        if(login.getCode()==0){

            MemberRespVo data = login.getData("data", new TypeReference<MemberRespVo>() {
            });
            //看这里, 成功放到session中
            session.setAttribute(AuthServerConstant.LOGIN_USER,data);
            return "redirect:http://gulimall.com";
        }else {
            Map<String,String > errors = new HashMap<>();
            errors.put("msg",login.getData("msg",new TypeReference<String>(){}));
            redirectAttributes.addFlashAttribute("errors",errors);
            return "redirect:http://auth.gulimall.com/login.html";
        }
    }

3.运行测试

另一个服务的前端使用session