学习Spring-Session+Redis实现session共享

时间：2024-08-13 23:04:20

1、添加依赖

<dependency>

  <groupId>org.springframework.session</groupId>

  <artifactId>spring-session-data-redis</artifactId>

  <version>1.2.1.RELEASE</version>

</dependency>

<dependency>

  <groupId>redis.clients</groupId>

  <artifactId>jedis</artifactId>

  <version>2.8.1</version>

</dependency>

2、配置

spring-mvc.xml:

<bean id="redisHttpSessionConfiguration"

      class="org.springframework.session.data.redis.config.annotation.web.http.RedisHttpSessionConfiguration">

    <property name="maxInactiveIntervalInSeconds" value="600"/>

</bean>

<bean id="jedisPoolConfig" class="redis.clients.jedis.JedisPoolConfig">

    <property name="maxTotal" value="100" />

    <property name="maxIdle" value="10" />

</bean>

<bean id="jedisConnectionFactory"

      class="org.springframework.data.redis.connection.jedis.JedisConnectionFactory" destroy-method="destroy">

    <property name="hostName" value="${redis_hostname}"/>

    <property name="port" value="${redis_port}"/>

    <property name="password" value="${redis_pwd}" />

    <property name="timeout" value="3000"/>

    <property name="usePool" value="true"/>

    <property name="poolConfig" ref="jedisPoolConfig"/>

</bean>

web.xml添加拦截器：

<filter>

    <filter-name>springSessionRepositoryFilter</filter-name>

    <filter-class>org.springframework.web.filter.DelegatingFilterProxy</filter-class>

</filter>

<filter-mapping>

    <filter-name>springSessionRepositoryFilter</filter-name>

    <url-pattern>/*</url-pattern>

</filter-mapping>

3、使用spring-session

只要使用标准的servlet api调用session，在底层就会通过Spring Session得到的，并且会存储到Redis或其他你所选择的数据源中。

这里是我写的一个demo:

/**

 * @author fengzp

 * @date 17/2/23下午3:19

 * @email fengzp@gzyitop.com

 * @company 广州易站通计算机科技有限公司

 */

@Controller

@RequestMapping(value = "index")

public class IndexController {

    private final Gson gson = new GsonBuilder().setDateFormat("yyyyMMddHHmmss").create();

    @RequestMapping(value = "login")

    public String login(HttpServletRequest request, String username){

        request.getSession().setAttribute("user", gson.toJson(new User(username,"123456")));

        return "login";

    }

    @RequestMapping(value = "index")

    public String index(HttpServletRequest request, Model model){

        User user = gson.fromJson(request.getSession().getAttribute("user").toString(), User.class);

        model.addAttribute("user", user);

        return "index";

    }

}

index.jsp:

第一个tomcat

<html>

<body>

<h2>Hello World!</h2>

<p>${user.username}</p>

</body>

</html>

第二个tomcat

<html>

<body>

<h2>Hello World! i am the second!</h2>

<p>${user.username}</p>

</body>

</html>

测试

这里利用上一篇nginx负载配置的两个tomcat来测试。
首先访问 http://192.168.99.100/feng/index/login.htm?username=nginx 来触发生成session。

查看redis，发现session已经保存到redis。

学习Spring-Session+Redis实现session共享

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