Java tutorial
/* * Copyright 2014-2016 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 sample.web; import javax.servlet.http.HttpServletRequest; import org.springframework.stereotype.Controller; import org.springframework.util.ObjectUtils; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.bind.annotation.RequestParam; /** * @author jitendra on 5/3/16. */ @Controller public class HomeController { @RequestMapping("/") public String home() { return "home"; } @RequestMapping("/setValue") public String setValue(@RequestParam(name = "key", required = false) String key, @RequestParam(name = "value", required = false) String value, HttpServletRequest request) { if (!ObjectUtils.isEmpty(key) && !ObjectUtils.isEmpty(value)) { request.getSession().setAttribute(key, value); } return "home"; } }