| /* |
| * 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.apache.ambari.view.hello; |
| |
| import org.apache.ambari.view.ViewContext; |
| import org.springframework.stereotype.Controller; |
| import org.springframework.ui.ModelMap; |
| import org.springframework.web.bind.annotation.RequestMapping; |
| import org.springframework.web.bind.annotation.RequestMethod; |
| |
| import javax.servlet.http.HttpServletRequest; |
| |
| /** |
| * Controller for the Hello Spring app view. |
| */ |
| @Controller |
| @RequestMapping(value = "/") |
| public class HelloController { |
| |
| @RequestMapping(method = RequestMethod.GET) |
| public String printHello(ModelMap model, HttpServletRequest request) { |
| |
| // get the view context from the servlet context |
| ViewContext viewContext = (ViewContext) request.getSession().getServletContext().getAttribute(ViewContext.CONTEXT_ATTRIBUTE); |
| |
| // get the current user name from the view context |
| String userName = viewContext.getUsername(); |
| |
| // add the greeting message attribute |
| model.addAttribute("greeting", "Hello " + (userName == null ? "unknown user" : userName) + "!"); |
| |
| return "hello"; |
| } |
| } |