spring redis session 使用入门[原]

两份properties配置, 仅端口不同

配置文件添加redis 链接

application-9001.properties	application-9002.properties
server.port=9001 server.servlet.context-path=/jpa #server.servlet.session.cookie.domain= server.servlet.session.cookie.name=sisisession #server.servlet.session.cookie.path=/sessionpath1 #server.servlet.session.cookie.http-only=true spring.redis.database=11 spring.redis.host=47.96.181.192 spring.redis.port=6379 spring.redis.password=123456 spring.redis.jedis.pool.max-idle=8 spring.redis.jedis.pool.max-wait=-1 spring.redis.jedis.pool.min-idle=0 spring.redis.timeout=5000 spring.session.store-type=redis	server.port=9002 server.servlet.context-path=/jpa #server.servlet.session.cookie.domain= server.servlet.session.cookie.name=sisisession #server.servlet.session.cookie.path=/sessionpath1 #server.servlet.session.cookie.http-only=true spring.redis.database=11 spring.redis.host=47.96.181.192 spring.redis.port=6379 spring.redis.password=123456 spring.redis.jedis.pool.max-idle=8 spring.redis.jedis.pool.max-wait=-1 spring.redis.jedis.pool.min-idle=0 spring.redis.timeout=5000 spring.session.store-type=redis

redis session 配置

开启redis session 

RedisSessionConfig.java

package com.bobo.code.config;

import org.springframework.context.annotation.Configuration;
import org.springframework.session.data.redis.config.annotation.web.http.EnableRedisHttpSession;

@Configuration
@EnableRedisHttpSession
public class RedisSessionConfig {
}

在使用了了 EnableRedisHttpSession  之后 session的getId()仍是一致的, 但是session.hashCode()已不一致, 是因为每次从redis中反序列化后重新生成了session对象,所以不一致,但是对getId()没有任何影响.

编写SessionController

SessionController.java

package com.bobo.code.web.controller;

import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.RestController;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpSession;
import java.util.HashMap;
import java.util.Map;

//参考链接 https://blog.csdn.net/zhaokejin521/article/details/104243739
//进阶 spring-session-data-redis的实现原理剖析==>https://www.pianshen.com/article/6802714230/
@RestController
public class SessionController {

    public static final String KEY = "key";

    //http://localhost:9001/jpa/setsession
    //http://localhost:9002/jpa/setsession
    @RequestMapping(value = "/setsession")
    public Object setSession(@RequestParam(required = false) String value, HttpSession session) {
        session.setAttribute(KEY, value);
        return session.getId();
    }

    //http://localhost:9001/jpa/getsession
    //http://localhost:9002/jpa/getsession
    @RequestMapping(value = "/getsession")
    public Object getSession(HttpServletRequest request, HttpSession session) {
        Map<String, Object> result = new HashMap<>();

        System.err.println("-----------------------------------------");
        String cookieInfoStr = request.getHeader("Cookie");
        System.err.println("cookie info " + cookieInfoStr);

        System.err.println("session.isNew() " + session.isNew());
        System.err.println("session.getId() " + session.getId());
        System.err.println("session.hashCode() " + session.hashCode());
        System.err.println("session.getLastAccessedTime() " + session.getLastAccessedTime());
        System.err.println("session.getMaxInactiveInterval() " + session.getMaxInactiveInterval());
        System.err.println("-----------------------------------------");

        Object value = session.getAttribute(KEY);
        result.put("sessionId", session.getId());
        result.put("value", value);
        return result;
    }

}

启动9001,9002端口的两台服务

-

访问9001端口服务以设置session

 http://localhost:9001/jpa/setsession?key=name&value=bobo

访问9001端口服务以获取session信息

http://localhost:9001/jpa/getsession?key=name

访问9002端口服务以获取session信息

http://localhost:9002/jpa/getsession?key=name

结论

最终会发现,不同端口的两台服务通过getsesion接口获取到的session完全一致