| 提交 | 用户 | 时间 | ||
| 059083 | 1 | package com.jcdm.main.websocket; |
| W | 2 | |
| 3 | ||
| 4 | import cn.hutool.log.Log; | |
| 5 | import cn.hutool.log.LogFactory; | |
| 6 | import com.alibaba.fastjson.JSON; | |
| 7 | import com.alibaba.fastjson.JSONObject; | |
| 8 | import org.springframework.stereotype.Component; | |
| 9 | import org.springframework.stereotype.Service; | |
| 10 | import org.springframework.util.StringUtils; | |
| 11 | ||
| 12 | import javax.websocket.*; | |
| 13 | import javax.websocket.server.PathParam; | |
| 14 | import javax.websocket.server.ServerEndpoint; | |
| 15 | import java.io.IOException; | |
| 16 | import java.util.concurrent.ConcurrentHashMap; | |
| 17 | ||
| 18 | ||
| 19 | ||
| 20 | @Component | |
| 21 | @Service | |
| 22 | @ServerEndpoint("/websocket/{userId}") | |
| 23 | public class WebSocketServer { | |
| 24 | static Log log = LogFactory.get(WebSocketServer.class); | |
| 25 | /** | |
| 26 | * 静态变量，用来记录当前在线连接数。应该把它设计成线程安全的。 | |
| 27 | */ | |
| 28 | private static int onlineCount = 0; | |
| 29 | /** | |
| 30 | * concurrent包的线程安全Set，用来存放每个客户端对应的MyWebSocket对象。 | |
| 31 | */ | |
| 32 | private static ConcurrentHashMap<String, WebSocketServer> webSocketMap = new ConcurrentHashMap<>(); | |
| 33 | /** | |
| 34 | * 与某个客户端的连接会话，需要通过它来给客户端发送数据 | |
| 35 | */ | |
| 36 | private Session session; | |
| 37 | /** | |
| 38 | * 接收userId | |
| 39 | */ | |
| 40 | private String userId = ""; | |
| 41 | ||
| 42 | /** | |
| 43 | * 连接建立成功调用的方法 | |
| 44 | */ | |
| 45 | @OnOpen | |
| 46 | public void onOpen(Session session, @PathParam("userId") String userId) { | |
| 47 | this.session = session; | |
| 48 | this.userId = userId; | |
| 49 | if (webSocketMap.containsKey(userId)) { | |
| 50 | webSocketMap.remove(userId); | |
| 51 | webSocketMap.put(userId, this); | |
| 52 | //加入set中 | |
| 53 | } else { | |
| 54 | webSocketMap.put(userId, this); | |
| 55 | //加入set中 | |
| 56 | addOnlineCount(); | |
| 57 | //在线数加1 | |
| 58 | } | |
| 59 | ||
| 60 | log.info("用户连接:" + userId + ",当前在线人数为:" + getOnlineCount()); | |
| 61 | ||
| 62 | try { | |
| 63 | sendMessage("连接成功"); | |
| 64 | } catch (IOException e) { | |
| 65 | log.error("用户:" + userId + ",网络异常!!!!!!"); | |
| 66 | } | |
| 67 | } | |
| 68 | ||
| 69 | /** | |
| 70 | * 连接关闭调用的方法 | |
| 71 | */ | |
| 72 | @OnClose | |
| 73 | public void onClose() { | |
| 74 | if (webSocketMap.containsKey(userId)) { | |
| 75 | webSocketMap.remove(userId); | |
| 76 | //从set中删除 | |
| 77 | subOnlineCount(); | |
| 78 | } | |
| 79 | log.info("用户退出:" + userId + ",当前在线人数为:" + getOnlineCount()); | |
| 80 | } | |
| 81 | ||
| 82 | /** | |
| 83 | * 收到客户端消息后调用的方法 | |
| 84 | * | |
| 85 | * @param message 客户端发送过来的消息 | |
| 86 | */ | |
| 87 | @OnMessage | |
| 88 | public void onMessage(String message, Session session) { | |
| 89 | log.info("用户消息:" + userId + ",报文:" + message); | |
| 90 | //可以群发消息 | |
| 91 | //消息保存到数据库、redis | |
| 92 | ||
| 93 | if (! StringUtils.isEmpty(message)) { | |
| 94 | try { | |
| 95 | //解析发送的报文 | |
| 96 | JSONObject jsonObject = JSON.parseObject(message); | |
| 97 | ||
| 98 | } catch (Exception e) { | |
| 99 | e.printStackTrace(); | |
| 100 | } | |
| 101 | } | |
| 102 | } | |
| 103 | ||
| 104 | /** | |
| 105 | * @param session | |
| 106 | * @param error | |
| 107 | */ | |
| 108 | @OnError | |
| 109 | public void onError(Session session, Throwable error) { | |
| 110 | log.error("用户错误:" + this.userId + ",原因:" + error.getMessage()); | |
| 111 | error.printStackTrace(); | |
| 112 | } | |
| 113 | ||
| 114 | /** | |
| 115 | * 实现服务器主动推送 | |
| 116 | */ | |
| 117 | public void sendMessage(String message) throws IOException { | |
| 118 | this.session.getBasicRemote().sendText(message); | |
| 119 | } | |
| 120 | ||
| 121 | ||
| 122 | /** | |
| 123 | * 实现服务器主动推送 | |
| 124 | */ | |
| 125 | public static void sendAllMessage(String message) throws IOException { | |
| 126 | log.info("发送消息:" + message); | |
| 127 | ConcurrentHashMap.KeySetView<String, WebSocketServer> userIds = webSocketMap.keySet(); | |
| 128 | for (String userId : userIds) { | |
| 129 | WebSocketServer webSocketServer = webSocketMap.get(userId); | |
| 130 | webSocketServer.session.getBasicRemote().sendText(message); | |
| 131 | System.out.println("webSocket实现服务器主动推送成功userIds====" + userIds); | |
| 132 | } | |
| 133 | } | |
| 134 | ||
| 135 | /** | |
| 136 | * 发送自定义消息 | |
| 137 | */ | |
| 138 | public static void sendInfo(String message, @PathParam("userId") String userId) throws IOException { | |
| 139 | log.info("发送消息到:" + userId + "，报文:" + message); | |
| 140 | if (!StringUtils.isEmpty(message) && webSocketMap.containsKey(userId)) { | |
| 141 | webSocketMap.get(userId).sendMessage(message); | |
| 142 | } else { | |
| 143 | log.error("用户" + userId + ",不在线！"); | |
| 144 | } | |
| 145 | } | |
| 146 | ||
| 147 | public static synchronized int getOnlineCount() { | |
| 148 | return onlineCount; | |
| 149 | } | |
| 150 | ||
| 151 | public static synchronized void addOnlineCount() { | |
| 152 | WebSocketServer.onlineCount++; | |
| 153 | } | |
| 154 | ||
| 155 | public static synchronized void subOnlineCount() { | |
| 156 | WebSocketServer.onlineCount--; | |
| 157 | } | |
| 158 | } | |
