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 springchat.rest; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.http.HttpStatus; import org.springframework.stereotype.Controller; import org.springframework.web.bind.annotation.*; import springchat.data.dto.MessageDto; import springchat.data.jpa.MessageEntity; import springchat.service.MessagesService; import java.util.ArrayList; import java.util.List; @Controller public class MessagesRest { @Autowired private MessagesService messages; @RequestMapping(value = "/rest/messages", method = RequestMethod.POST) @ResponseStatus(HttpStatus.OK) public void postMessage(@RequestParam("message") String message) { messages.postMessage(message); } private MessageDto buildMessageDtoFromEntity(MessageEntity it) { MessageDto dto = new MessageDto(); dto.setId(it.getUid()); dto.setContent(it.getMessage()); dto.setFrom(it.getUser()); dto.setTimestamp(it.getDate().getTime()); return dto; } @RequestMapping(value = "/rest/messages", method = RequestMethod.GET, produces = { "application/json" }) @ResponseBody public List<MessageDto> getMessages() { List<MessageDto> result = new ArrayList<MessageDto>(); for (MessageEntity it : messages.getMessages()) { result.add(buildMessageDtoFromEntity(it)); } return result; } }