// Only load the web-namespace parsers if the web classes are available
if(ClassUtils.isPresent(FILTER_CHAIN_PROXY_CLASSNAME, getClass().getClassLoader())) {
parsers.put(Elements.DEBUG, new DebugBeanDefinitionParser());
parsers.put(Elements.HTTP, new HttpSecurityBeanDefinitionParser());
parsers.put(Elements.HTTP_FIREWALL, new HttpFirewallBeanDefinitionParser());
parsers.put(Elements.FILTER_INVOCATION_DEFINITION_SOURCE, new FilterInvocationSecurityMetadataSourceParser());
parsers.put(Elements.FILTER_SECURITY_METADATA_SOURCE, new FilterInvocationSecurityMetadataSourceParser());
parsers.put(Elements.FILTER_CHAIN, new FilterChainBeanDefinitionParser());
filterChainMapBDD = new FilterChainMapBeanDefinitionDecorator();
}