public Map<String, Filter> getFilters() {
        return filters;
    }
Returns the filterName-to-Filter map of filters available for reference when defining filter chain definitions.
All filter chain definitions will reference filters by the names in this map (i.e. the keys).

@return the filterName-to-Filter map of filters available for reference when defining filter chain definitions.
support/spring/src/main/java/org/apache/shiro/spring/web/ShiroFilterFactoryBean.java