• 添加依赖 pom.xml

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

<dependency>
    <groupId>org.springframework.session</groupId>
    <artifactId>spring-session-data-redis</artifactId>
</dependency>

• 配置文件 application.yml

spring:
  session:
    store-type: redis
    redis:
      namespace: spring:session
      flush-mode: on_save
  redis:
    host: localhost
    database: 0
    port: 6379

SecurityContextPersistenceFilter.java 过滤器中 HttpSessionSecurityContextRepository 将会从redis中获取信息。