SpringBoot整合SpringSession以及自定义CookieSerializer和RedisSerializer详解

官方文档：https://docs.spring.io/spring-session/docs/2.2.6.RELEASE/reference/html5/#api-cookieserializer

引入SpringSession依赖

<!--        SpringSession，解决分布式session共享问题--><dependency><groupId>org.springframework.session</groupId><artifactId>spring-session-data-redis</artifactId></dependency>

引入Redis依赖

<!--        redis--><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-data-redis</artifactId></dependency>

配置application.yml

spring:## 配置SpringSession保存在redis中session:store-type: redis## 配置redisredis:host: 192.168.30.130port: 6379

启用SpringSession

@EnableRedisHttpSession
public class ProductApplication {public static void main(String[] args) {SpringApplication.run(ProductApplication.class, args);}
}

自定义CookieSerializer，解决子域session共享问题

@Configuration
public class MySpringSessionConfig {/*** cookie序列化器* @return*/@Beanpublic CookieSerializer cookieSerializer() {DefaultCookieSerializer serializer = new DefaultCookieSerializer();serializer.setCookieName("GULISESSION");serializer.setCookiePath("/");// 设置cookie的作用域为父域名serializer.setDomainName("gulimall.com");return serializer;}
}

自定义RedisSerializer，是为了能够在Redis Desktop Manager中方便查看session数据，将session数据序列化为JSON格式

@Configuration
public class MySpringSessionConfig {/*** cookie序列化器* @return*/@Beanpublic CookieSerializer cookieSerializer() {DefaultCookieSerializer serializer = new DefaultCookieSerializer();serializer.setCookieName("GULISESSION");serializer.setCookiePath("/");serializer.setDomainName("gulimall.com");return serializer;}/*** redis序列化器* @return*/@Beanpublic RedisSerializer<Object> springSessionDefaultRedisSerializer(){return new GenericFastJsonRedisSerializer();}
}

注意：RedisSerializer的name要命名为"springSessionDefaultRedisSerializer"，否则这个redis序列器是不生效的。

到这里SpringBoot整合SpringSession的配置就结束了，想要了解更多内容请查看官网文档。

关于以上配置的部分说明

@EnableRedisHttpSession： 启用SpringSession

@Retention(RetentionPolicy.RUNTIME)
@Target(ElementType.TYPE)
@Documented
@Import(RedisHttpSessionConfiguration.class)
@Configuration
public @interface EnableRedisHttpSession {.......
}

@Import(RedisHttpSessionConfiguration.class) 导入RedisHttpSessionConfiguration配置

RedisHttpSessionConfiguration 中有这么一个方法，标注了@Qualifier(“springSessionDefaultRedisSerializer”)，这就是为什么RedisSerializer的name要命名为"springSessionDefaultRedisSerializer"的原因

了解@Autowired(required = false)在方法上的作用

 @Autowired(required = false)@Qualifier("springSessionDefaultRedisSerializer")public void setDefaultRedisSerializer(RedisSerializer<Object> defaultRedisSerializer) {this.defaultRedisSerializer = defaultRedisSerializer;}

在RedisHttpSessionConfiguration的父类SpringHttpSessionConfiguration中有下面的方法

 @Autowired(required = false)public void setCookieSerializer(CookieSerializer cookieSerializer) {this.cookieSerializer = cookieSerializer;}

这就是我们将CookieSerializer、RedisSerializer放入容器中就能定制我们想要的功能的原理

此次分析或有不足之处，望大牛不吝赐教。