Use redis to realize distributed session sharing

Based on springboot, integrate redis, and use redis to realize distributed sessio sharing

• Introduce redis dependency
• Introduce data-redis dependency

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

• Add the annotation
  @EnableRedisHttpSession to the startup class

Then follow the previous operations to save and retrieve the session. For
example:

session.getAttributr("key")
session.setArrtibute("key",value)
//session移除：
@RequestMapping("logout")
  public void logout(HttpServletRequest request){
    
    
      //退出登录
      request.getSession().invalidate();//失效
  }