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@@ -0,0 +1,175 @@
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+package com.huimv.env.device.config;
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+
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+import lombok.extern.slf4j.Slf4j;
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+import org.springframework.stereotype.Component;
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+
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+import javax.websocket.*;
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+import javax.websocket.server.PathParam;
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+import javax.websocket.server.ServerEndpoint;
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+import java.io.IOException;
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+import java.text.DateFormat;
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+import java.text.SimpleDateFormat;
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+import java.util.Date;
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+import java.util.concurrent.ConcurrentHashMap;
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+
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+//注册成组件
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+@Component
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+//定义websocket服务器端，它的功能主要是将目前的类定义成一个websocket服务器端。注解的值将被用于监听用户连接的终端访问URL地址
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+@Slf4j
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+@ServerEndpoint("/websocket/{farmCode}")
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+public class WebSocket {
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+ //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。
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+ private static int onlineCount = 0;
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+ //concurrent包的线程安全Set，用来存放每个客户端对应的MyWebSocket对象。若要实现服务端与单一客户端通信的话，可以使用Map来存放，其中Key可以为用户标识
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+ private static ConcurrentHashMap<String, WebSocket> webSocketSet = new ConcurrentHashMap<String, WebSocket>();
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+ //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
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+ private Session WebSocketsession;
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+ //当前发消息的人员编号
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+ private String farmCode = "";
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+
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+
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+
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+ @OnOpen
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+ public void onOpen(@PathParam(value = "farmCode") String param, Session WebSocketsession, EndpointConfig config) {
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+ System.out.println(param);
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+ farmCode = param;//接收到发送消息的人员编号
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+ this.WebSocketsession = WebSocketsession;
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+ webSocketSet.put(param, this);//加入map中
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+ addOnlineCount(); //在线数加1
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+ System.out.println("有新连接加入！当前在线人数为" + getOnlineCount());
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+ }
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+
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+
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+ /**
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+ * 连接关闭调用的方法
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+ */
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+ @OnClose
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+ public void onClose() {
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+ if (!farmCode.equals("")) {
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+ webSocketSet.remove(farmCode); //从set中删除
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+ subOnlineCount(); //在线数减1
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+ System.out.println("有一连接关闭！当前在线人数为" + getOnlineCount());
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+ }
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+ }
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+
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+
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+ /**
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+ * 收到客户端消息后调用的方法
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+ *
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+ * @param message 客户端发送过来的消息
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+ * @param session 可选的参数
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+ */
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+ @SuppressWarnings("unused")
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+// @OnMessage
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+ public void onMessage(String message, Session session) {
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+ System.out.println("来自客户端的消息:" + message);
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+// session.get
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+ //群发消息
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+ if (1 < 2) {
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+ sendAll(message);
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+ } else {
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+ //给指定的人发消息
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+ sendToUser(message);
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+ }
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+ }
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+
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+
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+ /**
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+ * 给指定的人发送消息
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+ * @param message
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+ */
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+ @OnMessage
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+ public void sendToUser(String message) {
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+ String sendfarmCode = message.split(",")[1];
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+ String sendMessage = message.split(",")[0];
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+ String now = getNowTime();
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+ try {
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+ if (webSocketSet.get(sendfarmCode) != null) {
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+ webSocketSet.get(sendfarmCode).sendMessage(now + "用户" + farmCode + "发来消息：" + " <br/> " + sendMessage);
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+ } else {
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+ System.out.println("当前用户不在线");
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+ }
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+ } catch (IOException e) {
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+ e.printStackTrace();
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+ }
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+ }
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+
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+
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+ /**
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+ * 给所有人发消息
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+ * @param message
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+ */
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+ private void sendAll(String message) {
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+ String now = getNowTime();
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+ String sendMessage = message.split("[|]")[0];
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+ //遍历HashMap
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+ for (String key : webSocketSet.keySet()) {
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+ try {
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+ //判断接收用户是否是当前发消息的用户
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+ if (!farmCode.equals(key)) {
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+ webSocketSet.get(key).sendMessage(now + "用户" + farmCode + "发来消息：" + " <br/> " + sendMessage);
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+ System.out.println("key = " + key);
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+ }
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+ } catch (IOException e) {
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+ e.printStackTrace();
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+ }
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+ }
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+ }
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+
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+
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+
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+
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+ /**
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+ * 获取当前时间
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+ *
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+ * @return
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+ */
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+ private String getNowTime() {
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+ Date date = new Date();
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+ DateFormat format = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
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+ String time = format.format(date);
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+ return time;
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+ }
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+ /**
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+ * 发生错误时调用
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+ *
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+ * @param session
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+ * @param error
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+ */
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+ @OnError
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+ public void onError(Session session, Throwable error) {
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+ System.out.println("发生错误");
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+ error.printStackTrace();
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+ }
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+
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+
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+ /**
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+ * 这个方法与上面几个方法不一样。没有用注解，是根据自己需要添加的方法。
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+ *
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+ * @param message
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+ * @throws IOException
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+ */
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+ public void sendMessage(String message) throws IOException {
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+ this.WebSocketsession.getBasicRemote().sendText(message);
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+ //this.session.getAsyncRemote().sendText(message);
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+ }
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+
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+
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+ public static synchronized int getOnlineCount() {
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+ return onlineCount;
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+ }
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+
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+
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+ public static synchronized void addOnlineCount() {
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+ WebSocket.onlineCount++;
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+ }
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+
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+
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+ public static synchronized void subOnlineCount() {
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+ WebSocket.onlineCount--;
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+ }
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+
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+
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+
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+
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+}
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