pom.xml

<?xml version="1.0" encoding="UTF-8"?>

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <groupId>com.xwb</groupId>
    <artifactId>spring-session-share</artifactId>
    <version>1.0.0</version>
    <name>spring-session-share</name>

    <properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <maven.compiler.source>1.7</maven.compiler.source>
        <maven.compiler.target>1.7</maven.compiler.target>
    </properties>

    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>1.5.9.RELEASE</version>
    </parent>

    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.session</groupId>
            <artifactId>spring-session-data-redis</artifactId>
        </dependency>
    </dependencies>

    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
        </plugins>
    </build>
</project>

Redis连接工厂配置

package com.xwb;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.context.annotation.Bean;
import org.springframework.data.redis.connection.RedisConnectionFactory;
import org.springframework.data.redis.connection.jedis.JedisConnectionFactory;
import org.springframework.session.data.redis.config.annotation.web.http.EnableRedisHttpSession;

@EnableRedisHttpSession()
@SpringBootApplication(exclude = org.springframework.boot.autoconfigure.session.SessionAutoConfiguration.class)
public class Application {
    public static void main(String[] args) {
        SpringApplication.run(Application.class, args);
    }

    @Bean
    public RedisConnectionFactory redisConnectionFactory() {
        JedisConnectionFactory factory = new JedisConnectionFactory();
        factory.setHostName("127.0.0.1");
        factory.setPort(6379);
        return factory;
    }
}

Controller

package com.xwb.controller;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RestController;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpSession;

@RestController
public class SessionShareController {
    private static final Logger LOGGER = LoggerFactory.getLogger(SessionShareController.class);
    @GetMapping("/login")
    public String share(HttpServletRequest request){
        request.getSession().setAttribute("userId", "123456");
        LOGGER.info("port:{}, login success", request.getLocalPort());
        return "login success";
    }

    @GetMapping("/user")
    public String getUser(HttpServletRequest request){
        LOGGER.info("port:{}, get user", request.getLocalPort());
        HttpSession session = request.getSession();
        return session.getAttribute("userId").toString();
    }
}

测试

将项目打成可运行jar包
- 项目根目录下执行mvn package
将项目分别运行在两个不同的端口下
- 进入jar包所在目录执行命令java -jar spring-session-share-1.0.0.jar --server.port=8080 --server.context-path=/test
- 更改端口，重复上一步java -jar spring-session-share-1.0.0.jar --server.port=8888 --server.context-path=/test
配置Nginx

#user  nobody;
worker_processes  1;

events {
    worker_connections  1024;
}

http {
    upstream xwb-session-share {
        server 127.0.0.1:8080;
        server 127.0.0.1:8888;
    }
    
    server {
        listen 80;
        server_name      localhost;

        location / {
            proxy_pass   http://xwb-session-share;
        }
    }
}