安裝redis

$ wget http://download.redis.io/releases/redis-4.0.1.tar.gz $ tar xzf redis-4.0.1.tar.gz $ cd redis-4.0.1 $ make 配置redis.conf，允許外部連接

使用IntelliJ IDEA創建Spring Boot工程，選擇web, redis, session.

LoginController.java

package com.example.springsessiondemo;import org.springframework.stereotype.Controller; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.bind.annotation.ResponseBody;import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import javax.servlet.http.HttpSession;@Controller public class LoginController {@RequestMapping("/")@ResponseBodypublic String home(HttpServletRequest request, HttpServletResponse response) {HttpSession session = request.getSession();User user = (User) session.getAttribute("user");if (user == null){return "用好未登錄" + session.getId();} else {return "用好已登錄" + session.getId();}}@RequestMapping("/login")@ResponseBodypublic String login(HttpServletRequest request){User user = new User();user.setUsername("chf");user.setPassword("pass");request.getSession().setAttribute("user", user);return "登錄成功 " + request.getSession().getId();} }

創建文件config.java

@Configuration @ImportResource(locations={"classpath:spring.xml"}) public class Config { }

配置文件application.yaml

server:port: 8000 spring:session:store-type: redisredis:host: 10.0.0.201port: 6379password:
配置文件spring.xml

<?xml version="1.0" encoding="UTF-8"?> <beans xmlns="http://www.springframework.org/schema/beans"xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd"><bean id="defaultCookieSerializer" class="org.springframework.session.web.http.DefaultCookieSerializer"><property name="domainName" value="example.com"/><property name="cookieName" value="JSESSIONID"/><property name="cookiePath" value="/" /><!-- <property name="domainNamePattern" value="^.+?\.(\w+\.[a-z]+)$"></property>--></bean><bean id="redisHttpSessionConfiguration" class="org.springframework.session.data.redis.config.annotation.web.http.RedisHttpSessionConfiguration"><property name="maxInactiveIntervalInSeconds" value="1800" /><property name="cookieSerializer" ref="defaultCookieSerializer"/></bean> </beans>
配置hosts文件

127.0.0.1 www.example.com
127.0.0.1 passport.example.com

運行程序，通過瀏覽器訪問passport.example.com:8000

訪問www.example.com:8000

JSESSIONID的內容相同，說明實現了會話共享。

接下來在passport進行登錄

切換到www

一個簡單的單點登錄系統就實現了。

源代碼工程

https://github.com/chenhaifeng2016/springsessiondemo

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