SecurityContext context = SecurityContextHolder.getContext();
Authentication authentication = context.getAuthentication();
String username = authentication.getName();
Object principal = authentication.getPrincipal();
Collection<? extends GrantedAuthority> authorities = authentication.getAuthorities();
javapublic void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) {
// do something before the rest of the application
chain.doFilter(request, response); // invoke the rest of the application
// do something after the rest of the application
}
javatry {
filterChain.doFilter(request, response);
} catch (AccessDeniedException | AuthenticationException ex) {
if (!authenticated || ex instanceof AuthenticationException) {
startAuthentication();
} else {
accessDenied();
}
}
javapublic void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) {
// Lazily get Filter that was registered as a Spring Bean
// For the example in DelegatingFilterProxy
delegate
is an instance of Bean Filter0
Filter delegate = getFilterBean(someBeanName);
// delegate work to the Spring Bean
delegate.doFilter(request, response);
}
java