在微服務中，需要我們在各個微服務中共享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session */@Configuration@EnableRedisHttpSessionpublic class RedisSessionConfig {}3.application.properties配置文件中添加redis配置
spring.redis.port= 6379spring.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@RestControllerpublic 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@RestControllerpublic 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
以上所述是小編給大家介紹的SpringCloud實現Redis在各個微服務的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，小編會及時回復大家的。在此也非常感謝大家對VeVb武林網網站的支持！
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