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
<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.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, "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.getSession().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
以上所述是小编给大家介绍的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，小编会及时回复大家的。在此也非常感谢大家对脚本之家网站的支持！
