springmvc+springsession实现session共享

pom.xml文件

<web-app version="3.0" xmlns="http://java.sun.com/xml/ns/javaee"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd">

    <servlet>
        <servlet-name>springservlet-name>
        <servlet-class>org.springframework.web.servlet.DispatcherServletservlet-class>
        <init-param>
            <param-name>contextConfigLocationparam-name>
            <param-value>classpath:spring/spring-mvc.xml,classpath:spring/spring-session.xmlparam-value>
        init-param>
        <load-on-startup>1load-on-startup>
    servlet>

    <servlet-mapping>
        <servlet-name>springservlet-name>
        <url-pattern>/url-pattern>
    servlet-mapping>

    <filter>
        <filter-name>springSessionRepositoryFilterfilter-name>
        <filter-class>org.springframework.web.filter.DelegatingFilterProxyfilter-class>
    filter>
    <filter-mapping>
        <filter-name>springSessionRepositoryFilterfilter-name>
        <url-pattern>/*url-pattern>
    filter-mapping>

web-app>

spring-mvc.xml

<beans xmlns="http://www.springframework.org/schema/beans"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:context="http://www.springframework.org/schema/context"
    xmlns:tx="http://www.springframework.org/schema/tx" xmlns:mvc="http://www.springframework.org/schema/mvc"
    xsi:schemaLocation="http://www.springframework.org/schema/beans 
       http://www.springframework.org/schema/beans/spring-beans.xsd 
       http://www.springframework.org/schema/context 
       http://www.springframework.org/schema/context/spring-context.xsd 
       http://www.springframework.org/schema/tx 
       http://www.springframework.org/schema/tx/spring-tx.xsd
          http://www.springframework.org/schema/mvc
       http://www.springframework.org/schema/mvc/spring-mvc.xsd">

    
    <context:component-scan base-package="com.coodean.demo.session.web" />

    
    <mvc:annotation-driven />

    
    <mvc:default-servlet-handler />

    
    <bean
        class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <property name="prefix" value="/WEB-INF/view/">property>
        <property name="suffix" value=".jsp">property>
    bean>

beans>

spring-session.xml

<beans xmlns="http://www.springframework.org/schema/beans"
    xmlns:context="http://www.springframework.org/schema/context"
    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-4.0.xsd
        http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.0.xsd">

    <context:property-placeholder location="classpath:redis.properties" />  

    
    <bean id="jedisPoolConfig" class="redis.clients.jedis.JedisPoolConfig">
        <property name="maxTotal" value="${spring.redis.pool.maxTotal}" /> 
        <property name="maxIdle" value="${spring.redis.pool.maxIdle}" />   
        <property name="minIdle" value="${spring.redis.pool.minIdle}" />
        <property name="maxWaitMillis" value="${spring.redis.pool.maxWaitMillis}" />  

    bean>

    
    <bean id="jedisConnectionFactory"
        class="org.springframework.data.redis.connection.jedis.JedisConnectionFactory"
        destroy-method="destroy">
        <property name="hostName" value="${spring.redis.host}" />
        <property name="port" value="${spring.redis.port}" />
        <property name="password" value="${spring.redis.password}" />
        <property name="timeout" value="${spring.redis.timeout}" />
        <property name="database" value="${spring.redis.database}" />
        
        <property name="poolConfig" ref="jedisPoolConfig" />
    bean>
    
    <bean id="redisTemplate" class="org.springframework.data.redis.core.RedisTemplate">
        <property name="connectionFactory" ref="jedisConnectionFactory" />
    bean>

    
    <bean id="redisHttpSessionConfiguration"
        class="org.springframework.session.data.redis.config.annotation.web.http.RedisHttpSessionConfiguration">
        <property name="maxInactiveIntervalInSeconds" value="${session.maxInactiveIntervalInSeconds}" />
    bean>
beans>

redis.properties

# REDIS (RedisProperties)
# Redis数据库索引（默认为0）
spring.redis.database=0
# Redis服务器地址
spring.redis.host=127.0.0.1  
# Redis服务器连接端口
spring.redis.port=6379
# Redis服务器连接密码（默认为空）
spring.redis.password=
# 连接池最大连接数（使用负值表示没有限制）
spring.redis.pool.maxTotal=8
# 连接池最大阻塞等待时间（使用负值表示没有限制）
spring.redis.pool.maxWaitMillis=-1
# 连接池中的最大空闲连接
spring.redis.pool.maxIdle=8
# 连接池中的最小空闲连接
spring.redis.pool.minIdle=0 
# 连接超时时间（毫秒）
spring.redis.timeout=0

# 过期时间100分钟
session.maxInactiveIntervalInSeconds=60 

控制器中使用可以和单点一样使用session

package com.coodean.demo.session.web;

import javax.servlet.http.HttpSession;

import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;

@Controller
@RequestMapping("")
public class IndexController {

    @RequestMapping("login/{id}")
    @ResponseBody
    public String login(@PathVariable Long id, HttpSession httpsession){
        httpsession.setAttribute("user", id);
        return "login";
    }

    @RequestMapping("check")
    @ResponseBody
    public String check(HttpSession httpsession){
        Long userId = (Long)httpsession.getAttribute("user");
        if(userId == null)
            return "null";
        else return userId.toString();
    }
}