Java tutorial
/* * Copyright 2012 the original author or authors. * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ package com.github.carlomicieli.nerdmovies.config; import org.springframework.security.authentication.AuthenticationTrustResolverImpl; import org.springframework.security.core.Authentication; import org.springframework.security.core.context.SecurityContextHolder; import org.springframework.security.web.FilterInvocation; import org.springframework.security.web.access.expression.WebSecurityExpressionRoot; import org.springframework.web.servlet.ModelAndView; import org.springframework.web.servlet.handler.HandlerInterceptorAdapter; import javax.servlet.FilterChain; import javax.servlet.ServletException; import javax.servlet.ServletRequest; import javax.servlet.ServletResponse; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import java.io.IOException; /** * Interceptor to expose the Spring security to Thymeleaf views. * <p/> * Original code <a href="http://forum.thymeleaf.org/Thymeleaf-and-Spring-Security-td3205099.html">here</a> */ public class ImplicitObjectsInterceptor extends HandlerInterceptorAdapter { @Override public void postHandle(HttpServletRequest request, HttpServletResponse response, Object handler, ModelAndView modelAndView) throws Exception { if (modelAndView != null && !modelAndView.getViewName().startsWith("redirect:")) { FilterInvocation filterInvocation = new FilterInvocation(request, response, new FilterChain() { public void doFilter(ServletRequest request, ServletResponse response) throws IOException, ServletException { throw new UnsupportedOperationException(); } }); Authentication authentication = SecurityContextHolder.getContext().getAuthentication(); WebSecurityExpressionRoot sec = new WebSecurityExpressionRoot(authentication, filterInvocation); sec.setTrustResolver(new AuthenticationTrustResolverImpl()); modelAndView.getModel().put("sec", sec); } } }