官方文档,它是spring session项目的redis相关的一个子文档:https://docs.spring.io/spring-session/docs/2.0.0.BUILD-SNAPSHOT/reference/html5/guides/boot-redis.htmlhtml
在spring boot的文档中,告诉咱们添加@EnableRedisHttpSession来开启spring session支持,配置以下:html5
@Configuration @EnableRedisHttpSession public class RedisSessionConfig { }
而@EnableRedisHttpSession这个注解是由spring-session-data-redis提供的,因此在pom.xml文件中添加:redis
<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>
在配置文件application.properties里配置spring sessionspring
spring.session.store-type=redis #指定redis实现spring session server.session.timeout=600 # Session 过时时间,单位s spring.session.redis.flush-mode= # Sessions 刷新模式 spring.session.redis.namespace= # Namespace for keys used to store sessions.
配置redis链接信息服务器
spring.redis.host=localhost spring.redis.password=secret spring.redis.port=6379
加上端口号session
server.port=8080
定义一个Controllerapp
@RestController @RequestMapping(value = "/admin/v1") public class QuickRun { @RequestMapping(value = "/first", method = RequestMethod.GET) public Map<String, Object> firstResp (HttpServletRequest request){ Map<String, Object> map = new HashMap<>(); request.getSession().setAttribute("request Url", request.getRequestURL()); map.put("request Url", request.getRequestURL()); return map; } @RequestMapping(value = "/sessions", method = RequestMethod.GET) public Object sessions (HttpServletRequest request){ Map<String, Object> map = new HashMap<>(); map.put("sessionId", request.getSession().getId()); map.put("message", request.getSession().getAttribute("map")); return map; } }
复制上面的工程,把port改成9090ide
两个项目都启动好spring-boot
首先访问8080端口的设置sessionpost
{"request Url":"http://localhost:8080/admin/v1/first"}
接着,咱们访问8080端口的sessions,返回:
{"sessionId":"efcc85c0-9ad2-49a6-a38f-9004403776b5","message":"http://localhost:8080/admin/v1/first"}
最后,再访问9090端口的sessions,返回:
{"sessionId":"efcc85c0-9ad2-49a6-a38f-9004403776b5","message":"http://localhost:8080/admin/v1/first"}
可见,8080与9090两个服务器返回结果同样,实现了session的共享
若是此时再访问9090端口的first的话,首先返回:
{"request Url":"http://localhost:9090/admin/v1/first"}
而两个服务器的sessions都是返回:
{"sessionId":"efcc85c0-9ad2-49a6-a38f-9004403776b5","message":"http://localhost:9090/admin/v1/first"}
这个时候打开redis客户端,能够查询到session信息已经保存在redis里。
注意点:
1.Redis版本要在2.8+