SpringCloud实现Redis在各个微服务的Session共享问题

SpringCloud实现Redis在各个微服务的Session共享问题

在微服务中，需要我们在各个微服务中共享Session，使用Redis来共享Session是一个很好的解决方法，Redis是运行在内存中，查取速度很快。

1.pom文件中添加依赖

org.springframework.boot

spring-boot-starter-redis

org.springframework.session

spring-session-data-redis

2.使用Redis的session替换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配置类启用redis代码spring默认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.启动两个端口以一样的tomcat测试

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.sprinhttp://gframework.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, "获取成功");

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.gdjwXwetSession().getAttribute("hi")+"");

LOG.log(Level.WARNING, "获取成功");

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.注意事项：我用的springCloud版本为F版本需要Redis版本为2.8以上 如果不是2.8以上请升级，地址如下

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

总结

以上所述是给大家介绍的SpringCloud实现Redis在各个微服务的Session共享，希望对大家有所帮助，如果大家有任何疑问请给我留言，会及时回复大家的。在此也非常感谢大家对我们网站的支持！

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