spring-session与redis实现session共享

一.准备

1. 两个不同端口号的输出request.getLocalPort() + " ---> " + request.getSession(true).getId()的简单Springboot程序
2. nginx

二.Springboot中使用spring-session以及redis共享session

2.1.POM配置

 <dependencies>
     <dependency>
         <groupId>org.springframework.boot</groupId>
         <artifactId>spring-boot-starter-web</artifactId>
     </dependency>
     <dependency>
         <groupId>org.springframework.session</groupId>
         <artifactId>spring-session-data-redis</artifactId>
     </dependency>
     <dependency>
         <groupId>redis.clients</groupId>
         <artifactId>jedis</artifactId>
         <version>2.9.0</version>
     </dependency>
 </dependencies>

2.2.application.properties配置

 # Session store type.
 spring.session.store-type=redis
 # Namespace for keys used to store sessions.
 spring.session.redis.namespace=spring:session
 # Redis server host.
 spring.redis.host=localhost
 # Redis server port.
 spring.redis.port=6379

2.3.一个简单的REST接口（返回request.getLocalPort()和request.getSession(true).getId()）

 @RestController
 public class TestSessionShare {

     @GetMapping("session")
     public String getSession(HttpServletRequest request) {
         return request.getLocalPort() + " ---> " + request.getSession(true).getId();
     }

 }

2.4.package上面的Springboot程序

2.5.启动两个不同端口号的节点

 java -jar demo.jar --server.port=9988
 java -jar demo.jar --server.port=9999

三.Nginx

3.1.配置nginx.conf

 http {

     ......

     upstream sessionShare {
         server 127.0.0.1:9988 weight=1;
         server 127.0.0.1:9999 weight=1;
     }

     server {
         listen       80;
         server_name  localhost;

         location / {
             proxy_pass http://sessionShare;
         }
     }

     ......

 }

3.2.启动nginx验证session是否共享

启动nginx,打开浏览器不停刷新http://localhost/session
结果如下：