在实现限制每个用户的活动会话（数据库中可能存储的会话数、redis中的会话数）的逻辑时，我遇到了配置问题 FindByIndexNameSessionRepository .
因为我在注射 FindByIndexNameSessionRepository spring开始在redishttpsessionconfiguration类中配置bean，字段不会通过setters注入到类中。
结果，我得到一个错误：

Caused by: java.lang.IllegalStateException: RedisConnectionFactory is required
at org.springframework.util.Assert.state(Assert.java:73) ~[spring-core-5.2.5.RELEASE.jar:5.2.5.RELEASE]
at org.springframework.data.redis.core.RedisAccessor.afterPropertiesSet(RedisAccessor.java:38) ~[spring-data-redis-2.2.6.RELEASE.jar:2.2.6.RELEASE]
at org.springframework.data.redis.core.RedisTemplate.afterPropertiesSet(RedisTemplate.java:127) ~[spring-data-redis-2.2.6.RELEASE.jar:2.2.6.RELEASE]
at org.springframework.session.data.redis.config.annotation.web.http.RedisHttpSessionConfiguration.createRedisTemplate(RedisHttpSessionConfiguration.java:291) ~[spring-session-data-redis-2.2.2.RELEASE.jar:2.2.2.RELEASE]
at org.springframework.session.data.redis.config.annotation.web.http.RedisHttpSessionConfiguration.sessionRepository(RedisHttpSessionConfiguration.java:120) ~[spring-session-data-redis-2.2.2.RELEASE.jar:2.2.2.RELEASE]
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:na]
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:na]
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:na]
at java.base/java.lang.reflect.Method.invoke(Method.java:566) ~[na:na]
at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:154) ~[spring-beans-5.2.5.RELEASE.jar:5.2.5.RELEASE]

配置代码：

@EnableRedisHttpSession
@EnableWebSecurity
@Configuration
@RequiredArgsConstructor
public class CustomConfiguration extends WebSecurityConfigurerAdapter {
    private final FindByIndexNameSessionRepository sessionRepository;    
    // ....

    @Override
    protected void configure(HttpSecurity http) throws Exception {
        http
            .authorizeRequests()
                .antMatchers("/**")
                .authenticated()
                .and()
            .formLogin()
                .and()
            // ....
            .sessionManagement()
                .sessionAuthenticationStrategy(new CustomAuthenticationStrategy(sessionRegistry(), sessionsLimitRepository));
    }

    @Bean
    public SpringSessionBackedSessionRegistry sessionRegistry() {
        return new SpringSessionBackedSessionRegistry(sessionRepository);
    }

    @Bean
    public LettuceConnectionFactory redisConnectionFactory() {
        return new LettuceConnectionFactory(new RedisStandaloneConfiguration("server", 6379));
    }

    @Bean
    public HttpSessionEventPublisher httpSessionEventPublisher() {
        return new HttpSessionEventPublisher();
   }

}

pom.xml文件

<dependencies>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-web</artifactId>
    </dependency>

    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-security</artifactId>
    </dependency>

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

    <!-- .... -->
</dependencies>

如果删除\注解掉 FindByIndexNameSessionRepository 则当 springSessionRepositoryFilter bean被创建。
如果我理解正确，那么我不小心破坏了配置bean的顺序。为了解决这个问题，我尝试了@dependson、@lazy和各种各样的欺诈行为，比如将垃圾箱移动到不同的配置类、更改加载配置的顺序等等。
upd：添加bean httpSessionEventPublisher 和pom.xml