我们实现了由Redis支持的Spring Session,并拥有一组Tomcat服务器。当我们通过不设置jvmRoute来关闭粘性会话时,我们在jcaptcha服务中不断收到“文本验证失败”的错误信息。我认为这是因为jcaptcha servlet并不知道Spring Dispatcher servlet的存在,后者具有所有Spring Session过滤器,因此无法读取会话变量。我们该如何让jcaptcha与Spring Session配合工作呢?
以下是我们的设置:
Web.xml
以下是我们的设置:
Web.xml
<servlet>
<servlet-name>my-servlet</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<init-param>
<param-name>throwExceptionIfNoHandlerFound</param-name>
<param-value>true</param-value>
</init-param>
<load-on-startup>2</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>my-servlet</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping>
<servlet>
<servlet-name>jcaptcha</servlet-name>
<servlet-class>com.octo.captcha.module.servlet.image.SimpleImageCaptchaServlet</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>jcaptcha</servlet-name>
<url-pattern>/jcaptcha/jcaptcha.jpg</url-pattern>
</servlet-mapping>
CustomHttpSessionAppInitializer.java
public class CustomHttpSessionAppInitializer extends AbstractHttpSessionApplicationInitializer {}
RedisSessionConfig.java
@Configuration
@EnableRedisHttpSession
public class RedisSessionConfig {
@Value("${spring.redis.host}")
private String redisServerName;
@Value("${spring.redis.port}")
private Integer redisServerPort;
@Value("${spring.redis.database}")
private Integer redisServerDatabase;
@Value("${spring.redis.password}")
private String redisServerPassword;
@Value("${spring.server.affinity}")
private Boolean isServerAffinity = Boolean.FALSE;
@Autowired
private SessionIdentifierService sessionIdentifierService;
@Bean
public JedisConnectionFactory jedisConnectionFactory() {
RedisStandaloneConfiguration config = new RedisStandaloneConfiguration(redisServerName, redisServerPort);
config.setDatabase(redisServerDatabase);
config.setPassword(RedisPassword.of(redisServerPassword));
return new JedisConnectionFactory(config);
}
/*
* We need to register every HttpSessionListener as a bean to translate SessionDestroyedEvent and SessionCreatedEvent into
* HttpSessionEvent. Otherwise we will got a lot of warning messages about being Unable to publish Events for the session.
* See Spring Session Docs at:
* {@link} https://docs.spring.io/spring-session/docs/current/reference/html5/#httpsession-httpsessionlistener
*/
@Bean
public HttpSessionEventPublisher httpSessionEventPublisher() {
return new HttpSessionEventPublisher();
}
@Bean
public CookieSerializer cookieSerializer() {
DefaultCookieSerializer serializer = new DefaultCookieSerializer();
serializer.setCookieName("JSESSIONID");
serializer.setUseBase64Encoding(false);
if (isServerAffinity) {
serializer.setJvmRoute(sessionIdentifierService.getJvmRoute());
}
return serializer;
}
@Bean
public RedisTemplate<String, Object> redisTemplate() {
RedisTemplate<String, Object> template = new RedisTemplate<>();
template.setConnectionFactory(jedisConnectionFactory());
return template;
}
}