Java tutorial
/* * Copyright 2002-2014 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 io.hedwig.petclinic.ui.web; import java.util.Date; import javax.servlet.http.HttpServletRequest; import org.apache.commons.logging.Log; import org.apache.commons.logging.LogFactory; import org.springframework.stereotype.Controller; import org.springframework.web.bind.annotation.ControllerAdvice; import org.springframework.web.bind.annotation.ExceptionHandler; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.bind.annotation.RequestMethod; import org.springframework.web.bind.annotation.RequestParam; import org.springframework.web.servlet.ModelAndView; /** * Controller that handles the home page and exceptional cases. * * @author Arnaldo Piccinelli */ @Controller @ControllerAdvice public class GeneralController { private static Log logger = LogFactory.getLog(GeneralController.class); @RequestMapping("/") public String index() { return "welcome"; } // @RequestMapping("/error") // public String errorRouter() { // return "error"; // } @RequestMapping(value = "/router") public String accessDeniedRouter(@RequestParam("q") String resource) { logger.debug("In accessDeniedRouter resource = " + resource); return "redirect:/" + resource; } @RequestMapping(value = "/unauthorized") public ModelAndView accessDenied() { logger.debug("In accessDenied"); ModelAndView mav = new ModelAndView(); mav.addObject("timestamp", new Date()); mav.setViewName("unauthorized"); return mav; } @ExceptionHandler(Exception.class) public ModelAndView handleException(HttpServletRequest req, Exception e) { logger.debug("In handleException"); ModelAndView mav = new ModelAndView(); mav.addObject("exception", e); mav.addObject("timestamp", new Date()); mav.addObject("url", req.getRequestURL()); mav.setViewName("exception"); return mav; } @RequestMapping(value = "/oups", method = RequestMethod.GET) public String triggerException() { throw new RuntimeException( "Expected: controller used to showcase what " + "happens when an exception is thrown"); } }