Java tutorial
package com.orange.clara.tool.controllers.websocket; import com.orange.clara.tool.model.User; import com.orange.clara.tool.repos.UserRepo; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.messaging.handler.annotation.MessageMapping; import org.springframework.stereotype.Controller; import java.security.Principal; /** * Copyright (C) 2016 Orange * <p> * This software is distributed under the terms and conditions of the 'Apache-2.0' * license which can be found in the file 'LICENSE' in this package distribution * or at 'https://opensource.org/licenses/Apache-2.0'. * <p> * Author: Arthur Halet * Date: 01/07/2016 */ @Controller public class NotificationAckController { @Autowired private UserRepo userRepo; @MessageMapping("/notification.ack") public void notificationAcknowledge(Principal principal) { User user = this.userRepo.findOne(principal.getName()); user.updateLastWatch(); this.userRepo.save(user); } }