springboot+redis實現分散式session共享
官方文件,它是spring session專案的redis相關的一個子文件:https://docs.spring.io/spring-session/docs/2.0.0.BUILD-SNAPSHOT/reference/html5/guides/boot-redis.html
在spring boot的文件中,告訴我們新增@EnableRedisHttpSession來開啟spring session支援,配置如下:
@Configuration @EnableRedisHttpSession public class RedisSessionConfig { }
而@EnableRedisHttpSession這個註解是由spring-session-data-redis提供的,所以在pom.xml檔案中新增:
<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>
在配置檔案application.properties裡配置spring session
spring.session.store-type=redis #指定redis實現spring session server.session.timeout=600 # Session 過期時間,單位s spring.session.redis.flush-mode= # Sessions 重新整理模式 spring.session.redis.namespace= # Namespace for keys used to store sessions.
配置redis連線資訊
spring.redis.host=localhost spring.redis.password=secret spring.redis.port=6379
加上埠號
server.port=8080
定義一個Controller
@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; } }
複製上面的工程,把port改為9090
兩個專案都啟動好
首先訪問8080埠的設定session
{"request Url":"http://localhost:8080/admin/v1/first"}
接著,我們訪問8080埠的sessions,返回:
{"sessionId":"efcc85c0-9ad2-49a6-a38f-9004403776b5","message":"http://localhost:8080/admin/v1/first"}
最後,再訪問9090埠的sessions,返回:
{"sessionId":"efcc85c0-9ad2-49a6-a38f-9004403776b5","message":"http://localhost:8080/admin/v1/first"}
可見,8080與9090兩個伺服器返回結果一樣,實現了session的共享
如果此時再訪問9090埠的first的話,首先返回:
{"request Url":"http://localhost:9090/admin/v1/first"}
而兩個伺服器的sessions都是返回:
{"sessionId":"efcc85c0-9ad2-49a6-a38f-9004403776b5","message":"http://localhost:9090/admin/v1/first"}
這個時候開啟redis客戶端,可以查詢到session資訊已經儲存在redis裡。
注意點:
1.Redis版本要在2.8+
官方文件,它是spring session專案的redis相關的一個子文件:https://docs.spring.io/spring-session/docs/2.0.0.BUILD-SNAPSHOT/reference/html5/guides/boot-redis.html
在spring boot的文件中,告訴我們新增@EnableRedisHttpSession來開啟spring session支援,配置如下:
@Configuration @EnableRedisHttpSession public class RedisSessionConfig { }
而@EnableRedisHttpSession這個註解是由spring-session-data-redis提供的,所以在pom.xml檔案中新增:
<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>
在配置檔案application.properties裡配置spring session
spring.session.store-type=redis #指定redis實現spring session server.session.timeout=600 # Session 過期時間,單位s spring.session.redis.flush-mode= # Sessions 重新整理模式 spring.session.redis.namespace= # Namespace for keys used to store sessions.
配置redis連線資訊
spring.redis.host=localhost spring.redis.password=secret spring.redis.port=6379
加上埠號
server.port=8080
定義一個Controller
@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; } }
複製上面的工程,把port改為9090
兩個專案都啟動好
首先訪問8080埠的設定session
{"request Url":"http://localhost:8080/admin/v1/first"}
接著,我們訪問8080埠的sessions,返回:
{"sessionId":"efcc85c0-9ad2-49a6-a38f-9004403776b5","message":"http://localhost:8080/admin/v1/first"}
最後,再訪問9090埠的sessions,返回:
{"sessionId":"efcc85c0-9ad2-49a6-a38f-9004403776b5","message":"http://localhost:8080/admin/v1/first"}
可見,8080與9090兩個伺服器返回結果一樣,實現了session的共享
如果此時再訪問9090埠的first的話,首先返回:
{"request Url":"http://localhost:9090/admin/v1/first"}
而兩個伺服器的sessions都是返回:
{"sessionId":"efcc85c0-9ad2-49a6-a38f-9004403776b5","message":"http://localhost:9090/admin/v1/first"}
這個時候開啟redis客戶端,可以查詢到session資訊已經儲存在redis裡。
注意點:
1.Redis版本要在2.8+