springboot项目集成redis共享session

1:导包:

    
	org.springframework.boot
	spring-boot-starter-parent
	2.0.2.RELEASE
    
    
        
            org.springframework.boot
            spring-boot-starter-web
        
        
            org.springframework.session
            spring-session-data-redis
        
        
            org.springframework.boot
            spring-boot-starter-data-redis
        
    

2:配置redis信息, 并开启redis(在这里我是根据我自己的电脑配置的):

spring.redis.host=127.0.0.1
spring.redis.port=6379

3:配置启动类:

@SpringBootApplication
@EnableRedisHttpSession(maxInactiveIntervalInSeconds= 3600)	//spring在多长时间后强制使redis中的session失效,默认是1800.(单位/秒)
public class DemoApplication {

	public static void main(String[] args) {
		SpringApplication.run(DemoApplication.class, args);
	}
}

4:写登录Controller测试: 成功!

package com.example.demo.controller;

import com.example.demo.pojo.User;
import com.example.demo.util.FoilResult;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.ResponseBody;
import javax.servlet.http.HttpSession;

@Controller
public class AgentController {

    @PostMapping(value = "login")
    @ResponseBody
    public FoilResult login(HttpSession session) {
        System.out.println("===============登录成功===============");
        User user = new User();
        user.setName("luan");
        session.setAttribute("admin",user);
        return FoilResult.ok();
    }

    @PostMapping(value = "logout")
    @ResponseBody
    public FoilResult logout(HttpSession session) {
        System.out.println("============退出系统=============");
        System.out.println(session.getId());
        session.removeAttribute("admin");
        session.invalidate();
        return FoilResult.ok();
    }

    @PostMapping(value = "get")
    @ResponseBody
    public String get(HttpSession session) {
        User user = (User)session.getAttribute("admin");
        return user.getName();
    }

}

登录成功后,session就保存到到了redis中,可查看key值为spring:session:sessions进行查看.

退出后,redis中的session失效.

如果不自动退出,到了"过程3"中配置的@EnableRedisHttpSession(maxInactiveIntervalInSeconds= 3600) 时间后,redis中的session也会自动失效.

至此,就完成了reids共享session的效果!!!

注 : 在此过程中也可能会有一些版本坑的:

问题 : 启动报错:

Error starting ApplicationContext. To display the conditions report re-run your application with 'debug' enabled.
2018-05-23 16:01:50.573 ERROR 12308 --- [           main] o.s.boot.SpringApplication               : Application run failed

org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'enableRedisKeyspaceNotificationsInitializer' defined in class path resource [org/springframework/session/data/redis/config/annotation/web/http/RedisHttpSessionConfiguration.class]: Invocation of init method failed; nested exception is java.lang.NoSuchMethodError: org.springframework.data.redis.connection.RedisConnection.getConfig(Ljava/lang/String;)Ljava/util/List;
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1706) ~[spring-beans-5.0.6.RELEASE.jar:5.0.6.RELEASE]
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:579) ~[spring-beans-5.0.6.RELEASE.jar:5.0.6.RELEASE]
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:501) ~[spring-beans-5.0.6.RELEASE.jar:5.0.6.RELEASE]
	at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:317) ~[spring-beans-5.0.6.RELEASE.jar:5.0.6.RELEASE]
	at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:228) ~[spring-beans-5.0.6.RELEASE.jar:5.0.6.RELEASE]
	at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:315) ~[spring-beans-5.0.6.RELEASE.jar:5.0.6.RELEASE]
	at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:199) ~[spring-beans-5.0.6.RELEASE.jar:5.0.6.RELEASE]
	at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:760) ~[spring-beans-5.0.6.RELEASE.jar:5.0.6.RELEASE]
	at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:869) ~[spring-context-5.0.6.RELEASE.jar:5.0.6.RELEASE]
	at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:550) ~[spring-context-5.0.6.RELEASE.jar:5.0.6.RELEASE]
	at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:140) ~[spring-boot-2.0.2.RELEASE.jar:2.0.2.RELEASE]
	at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:759) [spring-boot-2.0.2.RELEASE.jar:2.0.2.RELEASE]
	at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:395) [spring-boot-2.0.2.RELEASE.jar:2.0.2.RELEASE]
	at org.springframework.boot.SpringApplication.run(SpringApplication.java:327) [spring-boot-2.0.2.RELEASE.jar:2.0.2.RELEASE]
	at org.springframework.boot.SpringApplication.run(SpringApplication.java:1255) [spring-boot-2.0.2.RELEASE.jar:2.0.2.RELEASE]
	at org.springframework.boot.SpringApplication.run(SpringApplication.java:1243) [spring-boot-2.0.2.RELEASE.jar:2.0.2.RELEASE]
	at com.example.demo.DemoApplication.main(DemoApplication.java:14) [classes/:na]
Caused by: java.lang.NoSuchMethodError: org.springframework.data.redis.connection.RedisConnection.getConfig(Ljava/lang/String;)Ljava/util/List;
	at org.springframework.session.data.redis.config.ConfigureNotifyKeyspaceEventsAction.getNotifyOptions(ConfigureNotifyKeyspaceEventsAction.java:74) ~[spring-session-1.3.2.RELEASE.jar:na]
	at org.springframework.session.data.redis.config.ConfigureNotifyKeyspaceEventsAction.configure(ConfigureNotifyKeyspaceEventsAction.java:55) ~[spring-session-1.3.2.RELEASE.jar:na]
	at org.springframework.session.data.redis.config.annotation.web.http.RedisHttpSessionConfiguration$EnableRedisKeyspaceNotificationsInitializer.afterPropertiesSet(RedisHttpSessionConfiguration.java:251) ~[spring-session-1.3.2.RELEASE.jar:na]
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1765) ~[spring-beans-5.0.6.RELEASE.jar:5.0.6.RELEASE]
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1702) ~[spring-beans-5.0.6.RELEASE.jar:5.0.6.RELEASE]
	... 16 common frames omitted

可能原因 : spring-session-data-redis版本问题:(我的是这个原因!)

			org.springframework.session
			spring-session-data-redis
			1.3.2.RELEASE

解决 : 版本改为2.0.3

			org.springframework.session
			spring-session-data-redis
			1.3.2.RELEASE

注 : 这里可能会出现一个ajax跨域访问无法携带cookie的问题(我在这里出现了), 我的已经解决, 请参考:https://blog.csdn.net/luan666/article/details/80429869

有不足的地方, 欢迎各位朋友评论留言!!!