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SpringCloud實現(xiàn)Redis在各個微服務(wù)的Session共享問題

更新時間：2018年08月20日 15:16:34 作者：別等時光染了夢想

Redis是運行在內(nèi)存中，查取速度很快。本文重點給大家介紹SpringCloud實現(xiàn)Redis在各個微服務(wù)的Session共享，感興趣的朋友一起看看吧

在微服務(wù)中，需要我們在各個微服務(wù)中共享Session，使用Redis來共享Session是一個很好的解決方法，Redis是運行在內(nèi)存中，查取速度很快。

1.pom文件中添加依賴

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

2.使用Redis的session替換Spring的session

package com.xueqing.demo.sleuthserverhi;
import org.springframework.context.annotation.Configuration;
import org.springframework.session.data.redis.config.annotation.web.http.EnableRedisHttpSession;
/**
 * 添加redis配置類啟用redis代碼spring默認(rèn)session
 */
@Configuration
@EnableRedisHttpSession
public class RedisSessionConfig {
}

3.application.properties配置文件中添加redis配置

spring.redis.port= 6379
spring.redis.host=localhost

4.啟動兩個端口以一樣的tomcat測試

package com.xueqing.demo.sleuthserverhi;

import java.util.logging.Level;
import java.util.logging.Logger;
import brave.sampler.Sampler;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cloud.client.loadbalancer.LoadBalanced;
import org.springframework.context.annotation.Bean;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.client.RestTemplate;
import javax.servlet.http.HttpServletRequest;
@SpringBootApplication
@RestController
public class SleuthServerHiApplication {
  public static void main(String[] args) {
    SpringApplication.run(SleuthServerHiApplication.class, args);
  }
  private static final Logger LOG = Logger.getLogger(SleuthServerHiApplication.class.getName());
  @Autowired
  private RestTemplate restTemplate;
  @Bean
  @LoadBalanced
  public RestTemplate getRestTemplate(){
    return new RestTemplate();
  }
  @RequestMapping("/hi")
  public String callHome(HttpServletRequest request){
    LOG.log(Level.INFO, "calling trace service-hi ");
    request.getSession().setAttribute("hi","111");
    LOG.log(Level.WARNING, "加入成功");
    return restTemplate.getForObject("http://localhost:8989/miya", String.class);
  }
  @RequestMapping("/info")
  public String info(HttpServletRequest request){
    LOG.log(Level.INFO, request.getSession().getAttribute("miya")+"");
    LOG.log(Level.WARNING, "獲取成功");
    return "i'm service-hi";
  }
  @Bean
  public Sampler defaultSampler() {
    return Sampler.ALWAYS_SAMPLE;
  }
}
package com.xueqing.demo.sleuthservermiya;
import brave.sampler.Sampler;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cloud.client.loadbalancer.LoadBalanced;
import org.springframework.context.annotation.Bean;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.client.RestTemplate;
import javax.servlet.http.HttpServletRequest;
import java.util.logging.Level;
import java.util.logging.Logger;
@SpringBootApplication
@RestController
public class SleuthServerMiyaApplication {
  public static void main(String[] args) {
    SpringApplication.run(SleuthServerMiyaApplication.class, args);
  }
  private static final Logger LOG = Logger.getLogger(SleuthServerMiyaApplication.class.getName());
  @RequestMapping("/hi")
  public String home(HttpServletRequest request){
    LOG.log(Level.INFO, "hi is being called");
    request.getSession().setAttribute("miya","111");
    LOG.log(Level.WARNING, "加入成功");
    return "hi i'm miya!";
  }
  @RequestMapping("/miya")
  public String info(HttpServletRequest request){
    LOG.log(Level.INFO, "info is being called");
    LOG.log(Level.INFO, request.getSession().getAttribute("hi")+"");
    LOG.log(Level.WARNING, "獲取成功");
    return restTemplate.getForObject("http://localhost:8988/info",String.class);
  }
  @Autowired
  private RestTemplate restTemplate;
  @Bean
  @LoadBalanced
  public RestTemplate getRestTemplate(){
    return new RestTemplate();
  }
  @Bean
  public Sampler defaultSampler() {
    return Sampler.ALWAYS_SAMPLE;
  }
}

5.注意事項：我用的springCloud版本為F版本需要Redis版本為2.8以上如果不是2.8以上請升級，地址如下

https://github.com/MicrosoftArchive/redis/releases

總結(jié)

以上所述是小編給大家介紹的SpringCloud實現(xiàn)Redis在各個微服務(wù)的Session共享，希望對大家有所幫助，如果大家有任何疑問請給我留言，小編會及時回復(fù)大家的。在此也非常感謝大家對腳本之家網(wǎng)站的支持！

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