SpringSession简介

是SpringCloud下管理session的框架在微服务架构中由于应用了分布式的思想session无法做到内存中互通需要一个框架来实现各个微服务中session数据共享SpringSession解决了这个问题。

在SpringSession框架中可以无感的实现和操作session共享。

1、修改Tomcat配置文件

可以通过修改配置文件实现session共享现在已经不用这种方式了有很多限制。

2、Nginx负载均衡策略

通过ip_hash的方式让同一个ip的请求到相同的服务中session自然没有失效。

这种方式也不推荐无法做到效率及硬件利用率最高的负载均衡。

upstream

SpringBoot整合SpringSession通过nacos进行配置管理通过redis存储方式实现session共享

官网文档Spring

parentgroupIdorg.springframework.boot/groupIdartifactIdspring-boot-starter-parent/artifactIdversion2.0.7.RELEASE/version/parentpropertiesjava.version1.8/java.versionproject.build.sourceEncodingUTF-8/project.build.sourceEncodingproject.reporting.outputEncodingUTF-8/project.reporting.outputEncodingspring-boot.version2.6.13/spring-boot.versionjwt.version0.7.0/jwt.versionfastjson.version1.2.60/fastjson.versionspring-cloud-alibaba.version2.0.3.RELEASE/spring-cloud-alibaba.versionspring-cloud.versionFinchley.SR2/spring-cloud.version/propertiesdependenciesdependencygroupIdorg.springframework.boot/groupIdartifactIdspring-boot-starter-web/artifactId/dependencydependencygroupIdorg.springframework.boot/groupIdartifactIdspring-boot-starter-test/artifactIdscopecompile/scope/dependencydependencygroupIdorg.projectlombok/groupIdartifactIdlombok/artifactId/dependency!--json--dependencygroupIdcom.alibaba/groupIdartifactIdfastjson/artifactIdversion${fastjson.version}/versionscopecompile/scope/dependency/dependenciesdependencyManagementdependenciesdependencygroupIdorg.springframework.cloud/groupIdartifactIdspring-cloud-dependencies/artifactIdversion${spring-cloud.version}/versiontypepom/typescopeimport/scope/dependencydependencygroupIdcom.alibaba.cloud/groupIdartifactIdspring-cloud-alibaba-dependencies/artifactIdversion${spring-cloud-alibaba.version}/versiontypepom/typescopeimport/scope/dependency/dependencies/dependencyManagementbuildpluginsplugingroupIdorg.springframework.boot/groupIdartifactIdspring-boot-maven-plugin/artifactIdconfigurationclassifierexec/classifier/configuration/plugin/plugins/build

【2.2添加修改项目控制器】

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

import

org.springframework.web.bind.annotation.RequestMapping;

import

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

javax.servlet.http.HttpSession;RestController

Setter

org.springframework.boot.SpringApplication;

import

org.springframework.boot.autoconfigure.SpringBootApplication;SpringBootApplication

public

{SpringApplication.run(SpringBootMain.class);}

【2.5启动访问两个项目】

dependencygroupIdorg.springframework.session/groupIdartifactIdspring-session-data-redis/artifactId

/dependency

dependencygroupIdorg.springframework.boot/groupIdartifactIdspring-boot-starter-data-redis/artifactId

/dependency

dependencygroupIdcom.alibaba.cloud/groupIdartifactIdspring-cloud-starter-alibaba-nacos-discovery/artifactId

/dependency

dependencygroupIdcom.alibaba.cloud/groupIdartifactIdspring-cloud-starter-alibaba-nacos-config/artifactId

/dependency

spring.application.namesessiondemo

4、添加nacos

登录此网址http://192.168.146.128:8848/nacos/#/login

#server-addr:

spring:cloud:nacos:discovery:server-addr:

192.168.146.128:8848config:server-addr:

192.168.146.128:8848file-extension:

yamlnamespace:

e3b50403-a164-48e3-b6d3-d060277c1e62shared-configs:-

data-id:

DEFAULT_GROUPinetutils:preferred-networks:

192.168.146

namespace命名空间在nacos页面中创建用来管理配置文件

shared-configs配置中心配置

需要创建一个config目录新建SessionConfig配置类修改domain作用域

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;/***

author

DefaultCookieSerializer();serializer.setCookieName(JSESSIONID);serializer.setCookiePath(/);serializer.setDomainNamePattern(^.?\\.(\\w\\.[a-z])$);return

redisSerializer()

GenericJackson2JsonRedisSerializer();}}8、测试

两个id相同实现共享