在Spring 4中如何进行基于关系数据库的HTTP会话持久性? [英] How can I do relational database-based HTTP Session Persistence in Spring 4?

问题描述

我需要能够将HTTP会话存储在关系数据库中，以便跨多个前端服务器对前端用户进行无状态负载平衡.如何在Spring 4中实现这一目标?

I need to be able to store the HTTP Session in a relational database in order to do stateless load balancing of my front-end users across multiple front-end servers. How can I achieve this in Spring 4?

我知道如何使用Redis做到这一点，但是似乎没有关于如何使用关系数据库做到这一点的文档. Postgres.

I see how one can do this with Redis, however there does not appear to be documentation on how to do this with a relational database e.g. Postgres.

推荐答案

使用Spring Session(它会透明地覆盖Java EE中的HttpSession)，您只需采用SessionRepository接口并使用自定义ex即可实现. JdbcSessionRepository.这很容易做到.实现后，只需手动添加(不需要@EnableRedisHttpSession批注)创建的过滤器即可过滤链，例如波纹管:

With Spring Session (it transparently will override HttpSessions from Java EE) you can just take SessionRepository interface and implement it with your custom ex. JdbcSessionRepository. It is kind of easy to do. When you have your implementation, then just add manually (you don't need @EnableRedisHttpSession annotation) created filter to filter chain, like bellow:

@Configuration
@EnableWebMvcSecurity
public class SecurityConfiguration extends WebSecurityConfigurerAdapter {

   //other stuff...

   @Autowired
   private SessionRepository<ExpiringSession> sessionRepository;

   private HttpSessionStrategy httpSessionStrategy = new CookieHttpSessionStrategy(); // or HeaderHttpSessionStrategy

   @Bean
   public SessionRepository<ExpiringSession> sessionRepository() {
       return new JdbcSessionRepository();
   }

   @Override
   protected void configure(HttpSecurity http) throws Exception {
       super.configure(http);
       SessionRepositoryFilter<ExpiringSession> sessionRepositoryFilter = new SessionRepositoryFilter<>(sessionRepository);
       sessionRepositoryFilter.setHttpSessionStrategy(httpSessionStrategy);
       http
            .addFilterBefore(sessionRepositoryFilter, ChannelProcessingFilter.class);
   }
}

在这里，您具有SessionRepository界面的外观.它只有4种方法可以实现.有关如何创建Session对象的信息，可以查看MapSessionRepository和MapSession实现(或RedisOperationsSessionRepository和RedisSession).

Here you have how SessionRepository interface looks like. It has only 4 methods to implement. For how to create Session object, you can look in MapSessionRepository and MapSession implementation (or RedisOperationsSessionRepository and RedisSession).

public interface SessionRepository<S extends Session> {
   S createSession();
   void save(S session);
   S getSession(String id);
   void delete(String id);
}

示例解决方案 https://github.com/Mati20041/spring-session-jpa-repository

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