in spring-boot-project/spring-boot/src/main/java/org/springframework/boot/web/servlet/AbstractFilterRegistrationBean.java [219:250]
protected void configure(FilterRegistration.Dynamic registration) {
super.configure(registration);
EnumSet<DispatcherType> dispatcherTypes = this.dispatcherTypes;
if (dispatcherTypes == null) {
T filter = getFilter();
if (ClassUtils.isPresent("org.springframework.web.filter.OncePerRequestFilter",
filter.getClass().getClassLoader()) && filter instanceof OncePerRequestFilter) {
dispatcherTypes = EnumSet.allOf(DispatcherType.class);
}
else {
dispatcherTypes = EnumSet.of(DispatcherType.REQUEST);
}
}
Set<String> servletNames = new LinkedHashSet<>();
for (ServletRegistrationBean<?> servletRegistrationBean : this.servletRegistrationBeans) {
servletNames.add(servletRegistrationBean.getServletName());
}
servletNames.addAll(this.servletNames);
if (servletNames.isEmpty() && this.urlPatterns.isEmpty()) {
registration.addMappingForUrlPatterns(dispatcherTypes, this.matchAfter, DEFAULT_URL_MAPPINGS);
}
else {
if (!servletNames.isEmpty()) {
registration.addMappingForServletNames(dispatcherTypes, this.matchAfter,
StringUtils.toStringArray(servletNames));
}
if (!this.urlPatterns.isEmpty()) {
registration.addMappingForUrlPatterns(dispatcherTypes, this.matchAfter,
StringUtils.toStringArray(this.urlPatterns));
}
}
}