Redis解决Session共享问题的方法详解

package com.wl.standard.controller;
 
import cn.hutool.core.util.StrUtil;
import com.wl.standard.common.result.HttpResult;
import io.swagger.annotations.Api;
import lombok.extern.slf4j.Slf4j;
import org.springframework.core.env.Environment;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
 
import javax.annotation.Resource;
import javax.servlet.http.HttpServletRequest;
 
/**
 * @author wl
 * @date 2022/7/10 14:25
 */
@Api(tags = "测试接口")
@Slf4j
@RestController
@RequestMapping("/test")
public class TestController {
 
    @Resource
    Environment environment;
 
    @GetMapping("/demo")
    public HttpResult demo(HttpServletRequest request) {
        int maxInactiveInterval = request.getSession().getMaxInactiveInterval();
        log.info("session过期时间: {}秒", maxInactiveInterval);
        String port = (String) request.getSession().getAttribute("port");
        if (StrUtil.isEmpty(port)) {
            //获取当前服务端口
            port = environment.getProperty("local.server.port");
            request.getSession().setAttribute("port", port);
        }
        log.info("session-port: {}", port);
        return HttpResult.success(port);
    }
}

server:
  port: 8000
  servlet:
    session:
      timeout: 3600 #延长session过期时间到1小时

<!--springboot中的redis依赖-->
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-data-redis</artifactId>
    </dependency>
      <dependency>
          <groupId>org.springframework.session</groupId>
          <artifactId>spring-session-data-redis</artifactId>
      </dependency>

spring:
  # session配置
  session:
    timeout: 7200 # 设置session失效时间
    store-type: redis # 修改spring-session存储配置，默认存储到服务器内存中，现在设置存到redis中（关键）