web/src/main/java/org/springframework/security/web/context/AbstractSecurityWebApplicationInitializer.java
protected EnumSet<DispatcherType> getSecurityDispatcherTypes() {
		return EnumSet.of(DispatcherType.REQUEST, DispatcherType.ERROR,
				DispatcherType.ASYNC);
	}
protected EnumSet<DispatcherType> getSecurityDispatcherTypes() {
		return EnumSet.of(DispatcherType.REQUEST, DispatcherType.ERROR,
				DispatcherType.ASYNC);
	}
Get the {@link DispatcherType} for the springSecurityFilterChain.
@return