Java tutorial
package com.devicehive.messages.handler; /* * #%L * DeviceHive Frontend Logic * %% * Copyright (C) 2016 DataArt * %% * 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. * #L% */ import com.google.gson.JsonObject; import org.slf4j.Logger; import org.slf4j.LoggerFactory; import org.springframework.web.socket.TextMessage; import org.springframework.web.socket.WebSocketSession; import java.io.IOException; public class WebSocketClientHandler { private static final Logger logger = LoggerFactory.getLogger(WebSocketClientHandler.class); public static void sendMessage(JsonObject json, WebSocketSession session) { if (!session.isOpen()) { return; } try { session.sendMessage(new TextMessage(json.toString())); } catch (IOException e) { logger.error("Exception while sending message", e); } } }