关于@ConditionalOnProperty的作用及用法说明

@Configuration
@ConditionalOnProperty(prefix = "filter",name = "loginFilter",havingValue = "true")
public class FilterConfig {
    //prefix为配置文件中的前缀,
    //name为配置的名字
    //havingValue是与配置的值对比值,当两个值相同返回true,配置类生效.
    @Bean
    public FilterRegistrationBean getFilterRegistration() {
        FilterRegistrationBean filterRegistration  = new FilterRegistrationBean(new LoginFilter());
        filterRegistration.addUrlPatterns("/*");
        return filterRegistration;
    }
}

    @Bean
    @ConditionalOnProperty(name="spring.redis.host")
    RedissonClient redissonSingle() {
        Config config = new Config();
        SingleServerConfig serverConfig = config.useSingleServer()
                .setAddress("redis://" + redssionProperties.getHost() + ":" + redssionProperties.getPort())
                .setTimeout(redssionProperties.getTimeout())
                .setConnectionPoolSize(redssionProperties.getConnectionPoolSize())
                .setConnectionMinimumIdleSize(redssionProperties.getConnectionMinimumIdleSize());
        if(StringUtils.isNotBlank(redssionProperties.getPassword())) {
            serverConfig.setPassword(redssionProperties.getPassword());
        }
        return Redisson.create(config);
    }

@ConditionalOnProperty(value = "muyichen.auth.test", havingValue = "true")
@Component
public class AuthorizationFilterImpl implements AuthorizationFilter {
    //具体的过滤逻辑
}

muyichen.auth.test=true