Java tutorial
/* * Licensed to the Apache Software Foundation (ASF) under one * or more contributor license agreements. See the NOTICE file * distributed with this work for additional information * regarding copyright ownership. The ASF licenses this file * to you 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 org.stockwatcher.web; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import org.slf4j.Logger; import org.slf4j.LoggerFactory; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.stereotype.Controller; import org.springframework.ui.Model; import org.springframework.web.bind.annotation.PathVariable; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.bind.annotation.RequestMethod; import org.stockwatcher.data.UserDAO; import org.stockwatcher.domain.User; /** * Controller class for all User-related web requests. Uses DAO classes to * interact with the database. * * @author Tony Piazza */ @Controller @RequestMapping("/users") public class UserController extends BaseController { private static final Logger LOGGER = LoggerFactory.getLogger(UserController.class); @Autowired private UserDAO dao; @RequestMapping(method = RequestMethod.GET) public String allUsers(Model model) { model.addAttribute("users", dao.getUsers()); return "users"; } @RequestMapping(value = "/select/{userId}", method = RequestMethod.GET) public String selectUser(@PathVariable String userId, Model model, HttpServletRequest request, HttpServletResponse response) { String view = "redirect:/main/users"; // first we need to validate the user User user = getUser(userId); if (user != null) { LOGGER.info("User selected with id = {}", userId); request.getSession().setAttribute("user", user); } else { String path = request.getQueryString(); view = path.substring(0, path.indexOf("/select/")); } return view; } }